Clone attributes to new tmpfs mountpoint

fix typo

Signed-off-by: Shaka Huang <shakalaca@gmail.com>

.gitattributes

@@ -0,0 +1,18 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text eol=lf
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+# *.c text
+# *.h text
+
+# Declare files that will always have CRLF line endings on checkout.
+*.cmd text eol=crlf
+*.bat text eol=crlf
+
+# Denote all files that are truly binary and should not be modified.
+chromeos/** binary
+*.jar binary
+*.exe binary
+*.apk binary
+*.png binary

.gitignore

@@ -1,21 +1,7 @@
 obj/
 libs/
 *.zip
+*.jks
 
-# Generated binaries
-zip_static/arm/*
-zip_static/arm64/*
-zip_static/x86/*
-zip_static/x64/*
-uninstaller/arm/*
-uninstaller/arm64/*
-uninstaller/x86/*
-uninstaller/x64/*
-zipsigntools/zipadjust
-
-# Generated scripts
-zip_static/common/magic_mask.sh
-zip_static/META-INF/com/google/android/update-binary
-
-# Leave all busybox!
-!busybox
+# Copied binaries
+ziptools/zipadjust

.gitmodules

@@ -1,9 +1,21 @@
-[submodule "selinux"]
-	path = selinux
-	url = https://github.com/topjohnwu/selinux
-[submodule "jni/sepolicy-inject"]
-	path = jni/sepolicy-inject
-	url = https://github.com/topjohnwu/sepolicy-inject
-[submodule "jni/resetprop"]
-	path = jni/resetprop
-	url = https://github.com/topjohnwu/resetprop.git
+[submodule "jni/selinux"]
+	path = jni/external/selinux
+	url = https://github.com/topjohnwu/selinux.git
+[submodule "jni/su"]
+	path = jni/su
+	url = https://github.com/topjohnwu/MagiskSU.git
+[submodule "jni/ndk-compression"]
+	path = jni/external/ndk-compression
+	url = https://github.com/topjohnwu/ndk-compression.git
+[submodule "jni/magiskpolicy"]
+	path = jni/magiskpolicy
+	url = https://github.com/topjohnwu/magiskpolicy.git
+[submodule "MagiskManager"]
+	path = MagiskManager
+	url = https://github.com/topjohnwu/MagiskManager.git
+[submodule "jni/busybox"]
+	path = jni/external/busybox
+	url = https://github.com/topjohnwu/ndk-busybox.git
+[submodule "jni/external/dtc"]
+	path = jni/external/dtc
+	url = https://github.com/dgibson/dtc

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    {one line to give the program's name and a brief idea of what it does.}
+    Copyright (C) {year}  {name of author}
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    {project}  Copyright (C) {year}  {fullname}
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

README.MD

@@ -1,10 +1,95 @@
 # Magisk
-###Static binaries included:  
-* Busybox: http://forum.xda-developers.com/android/software-hacking/tool-busybox-flashable-archs-t3348543
 
-###How to build Magisk
-1. Only support MacOS and Linux
-2. Download and install NDK
-3. Add the NDK directory into PATH.  
-To check if success, please try calling `which ndk-build` and see if it returns the NDK directory
-4. Execute `./build.sh`, it will give you further information
+## How to build Magisk
+
+#### Building has been tested on 3 major platforms:
+
+**macOS 10.12**  
+**Ubuntu 17.04 x64**  
+**Windows 10 x64**
+
+#### Environment Requirements
+
+1. A 64-bit machine: `cmake` for Android is only available in 64-bit
+2. Python 3.5+: to run the build script
+3. Java Development Kit (JDK) 8: To compile Magisk Manager and sign zips
+4. C compiler (Unix only): To build `zipadjust`. Windows users can use the pre-built `zipadjust.exe`
+5. Android SDK: `ANDROID_HOME` environment variable should point to the Android SDK folder
+6. Android NDK: Install NDK via `sdkmanager`, or via Android SDK Manager in Android Studio
+
+#### Instructions and Notes
+
+1. The easiest way to setup a working environment is to open Magisk Manager with Android Studio. The IDE will download required components and construct the environment for you. Don't forget to set `ANDROID_HOME` environment variable to the SDK path.
+2. Windows users: while installing Python 3 on Windows, allow the installer to add Python to `PATH`, or you'll have to add it manually afterwards. By default, the Python executable is setup as `python`, not `python3` like most Unix environment. If you have both Python 2 and Python 3 installed, you'll have to deal with the executable name and `PATH` yourself. To double check the Python version, call `python --version`.
+3. To run the script, on Windows call `python build.py [args...]`; on Unix call `python3 build.py [args...]`, or simply `./build.py [args...]`. To see the built-in help message, call the script with `-h` as an argument. The `-h` option also works for each supported actions to see the help message for the specific action.
+4. By default, the script will build binaries and Magisk Manager in debug mode, which will enable verbose debugging messages. If you want to build Magisk Manager in release mode (through the flag `--release`), you will need to place your Java Keystore file in `release_signature.jks` to sign Magisk Manager's APK. For more information, check out [Google's Official Documentation](https://developer.android.com/studio/publish/app-signing.html#signing-manually).
+5. The python build script uses ANSI color codes to change the color of the terminal output. For Windows, this **only** works on Windows 10, as previous Windows console do not support them. If you use an older Windows version, a quick Google search should provide many workarounds.
+
+
+## License
+
+```
+Magisk, including all subprojects (git submodule) is free software:
+you can redistribute it and/or modify it under the terms of the 
+GNU General Public License as published by the Free Software Foundation, 
+either version 3 of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+```
+
+## Credits
+
+**MagiskManager** (`MagiskManager`)
+
+* Copyright 2016-2017, John Wu (@topjohnwu)
+* All contributors and translators
+
+**MagiskSU** (`jni/su`)
+
+* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2015, Pierre-Hugues Husson (phh@phh.me)
+* Copyright 2013, Koushik Dutta (@koush)
+* Copyright 2010, Adam Shanks (@ChainsDD)
+* Copyright 2008, Zinx Verituse (@zinxv)
+
+**MagiskPolicy** (`jni/magiskpolicy`)
+
+* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2015, Pierre-Hugues Husson (phh@phh.me)
+* Copyright 2015, Joshua Brindle (@joshua_brindle)
+
+**MagiskHide** (`jni/magiskhide`)
+
+* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2016, Pierre-Hugues Husson (phh@phh.me) (original hidesu)
+
+**resetprop** (`jni/resetprop`)
+
+ * Copyright 2016-2017 John Wu (@topjohnwu)
+ * Copyright 2016 nkk71 (nkk71x@gmail.com)
+
+**SELinux** (`jni/selinux`)
+
+* Makefile for NDK: Copyright 2016-2017, John Wu (@topjohnwu)
+* Maintained by many developers in SELinux project
+
+**ndk-compression** (`jni/ndk-compression`)
+
+* Makefile for NDK: Copyright 2017, John Wu (@topjohnwu)
+* Each library has its own copyright message in corresponding directories
+
+**ndk-busybox** (`jni/busybox`)
+
+* Makefile for NDK, generated by [ndk-busybox-kitchen](https://github.com/topjohnwu/ndk-busybox-kitchen): Copyright 2017, John Wu (@topjohnwu)
+* Patches for NDK: Many contributors along the way, all placed in [osm0sis/android-busybox-ndk](https://github.com/osm0sis/android-busybox-ndk)
+* The copyright message for busybox should be included in its own directory
+
+**Others Not Mentioned**
+
+* Copyright 2016-2017, John Wu (@topjohnwu)

build.py

@@ -0,0 +1,385 @@
+#!/usr/bin/env python3
+import sys
+import os
+import subprocess
+
+def error(str):
+	print('\n' + '\033[41m' + str + '\033[0m' + '\n')
+	sys.exit(1)
+
+def header(str):
+	print('\n' + '\033[44m' + str + '\033[0m' + '\n')
+
+# Environment checks
+if not sys.version_info >= (3, 5):
+	error('Requires Python >= 3.5')
+
+if 'ANDROID_HOME' not in os.environ:
+	error('Please add Android SDK path to ANDROID_HOME environment variable!')
+
+try:
+	subprocess.run(['java', '-version'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+except FileNotFoundError:
+	error('Please install Java and make sure \'java\' is available in PATH')
+
+# If not Windows, we need gcc to compile
+if os.name != 'nt':
+	try:
+		subprocess.run(['gcc', '-v'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+	except FileNotFoundError:
+		error('Please install C compiler and make sure \'gcc\' is available in PATH')
+
+import argparse
+import multiprocessing
+import zipfile
+import datetime
+import errno
+import shutil
+import lzma
+import base64
+
+def silentremove(file):
+	try:
+	    os.remove(file)
+	except OSError as e:
+		if e.errno != errno.ENOENT:
+			raise
+
+def zip_with_msg(zipfile, source, target):
+	if not os.path.exists(source):
+		error('{} does not exist! Try build \'binary\' and \'apk\' before zipping!'.format(source))
+	print('zip: {} -> {}'.format(source, target))
+	zipfile.write(source, target)
+
+def build_all(args):
+	build_binary(args)
+	build_apk(args)
+	zip_main(args)
+	zip_uninstaller(args)
+
+def build_binary(args):
+	header('* Building Magisk binaries')
+
+	# Force update Android.mk timestamp to trigger recompilation
+	os.utime(os.path.join('jni', 'Android.mk'))
+
+	ndk_build = os.path.join(os.environ['ANDROID_HOME'], 'ndk-bundle', 'ndk-build')
+	debug_flag = '' if args.release else '-DMAGISK_DEBUG'
+	proc = subprocess.run('{} APP_CFLAGS=\"-DMAGISK_VERSION=\\\"{}\\\" -DMAGISK_VER_CODE={} {}\" -j{}'.format(
+		ndk_build, args.versionString, args.versionCode, debug_flag, multiprocessing.cpu_count()), shell=True)
+	if proc.returncode != 0:
+		error('Build Magisk binary failed!')
+
+def build_apk(args):
+	header('* Building Magisk Manager')
+
+	for key in ['public.certificate.x509.pem', 'private.key.pk8']:
+		source = os.path.join('ziptools', key)
+		target = os.path.join('MagiskManager', 'app', 'src', 'main', 'assets', key)
+		print('cp: {} -> {}'.format(source, target))
+		shutil.copyfile(source, target)
+
+	for script in ['magisk_uninstaller.sh', 'util_functions.sh']:
+		source = os.path.join('scripts', script)
+		target = os.path.join('MagiskManager', 'app', 'src', 'main', 'assets', script)
+		print('cp: {} -> {}'.format(source, target))
+		shutil.copyfile(source, target)
+
+	os.chdir('MagiskManager')
+
+	# Build unhide app and place in assets
+	proc = subprocess.run('{} unhide::assembleRelease'.format(os.path.join('.', 'gradlew')), shell=True)
+	if proc.returncode != 0:
+		error('Build Magisk Manager failed!')
+	source = os.path.join('unhide', 'build', 'outputs', 'apk', 'release', 'unhide-release-unsigned.apk')
+	target = os.path.join('app', 'src', 'main', 'assets', 'unhide.apk')
+	print('cp: {} -> {}'.format(source, target))
+	shutil.copyfile(source, target)
+
+	print('')
+
+	if args.release:
+		if not os.path.exists(os.path.join('..', 'release_signature.jks')):
+			error('Please generate a java keystore and place it in \'release_signature.jks\'')
+
+		proc = subprocess.run('{} app::assembleRelease'.format(os.path.join('.', 'gradlew')), shell=True)
+		if proc.returncode != 0:
+			error('Build Magisk Manager failed!')
+
+		unsigned = os.path.join('app', 'build', 'outputs', 'apk', 'release', 'app-release-unsigned.apk')
+		aligned = os.path.join('app', 'build', 'outputs', 'apk', 'release', 'app-release-aligned.apk')
+		release = os.path.join('app', 'build', 'outputs', 'apk', 'release', 'app-release.apk')
+
+		# Find the latest build tools
+		build_tool = sorted(os.listdir(os.path.join(os.environ['ANDROID_HOME'], 'build-tools')))[-1]
+
+		silentremove(aligned)
+		silentremove(release)
+
+		proc = subprocess.run([
+			os.path.join(os.environ['ANDROID_HOME'], 'build-tools', build_tool, 'zipalign'),
+			'-v', '-p', '4', unsigned, aligned], stdout=subprocess.DEVNULL)
+		if proc.returncode != 0:
+			error('Zipalign Magisk Manager failed!')
+
+		# Find apksigner.jar
+		apksigner = ''
+		for root, dirs, files in os.walk(os.path.join(os.environ['ANDROID_HOME'], 'build-tools', build_tool)):
+			if 'apksigner.jar' in files:
+				apksigner = os.path.join(root, 'apksigner.jar')
+				break
+		if not apksigner:
+			error('Cannot find apksigner.jar in Android SDK build tools')
+
+		proc = subprocess.run('java -jar {} sign --ks {} --out {} {}'.format(
+			apksigner,
+			os.path.join('..', 'release_signature.jks'),
+			release, aligned), shell=True)
+		if proc.returncode != 0:
+			error('Release sign Magisk Manager failed!')
+
+		silentremove(unsigned)
+		silentremove(aligned)
+	else:
+		proc = subprocess.run('{} app::assembleDebug'.format(os.path.join('.', 'gradlew')), shell=True)
+		if proc.returncode != 0:
+			error('Build Magisk Manager failed!')
+
+	# Return to upper directory
+	os.chdir('..')
+
+def sign_adjust_zip(unsigned, output):
+
+	zipsigner = os.path.join('ziptools', 'zipsigner', 'build', 'libs', 'zipsigner.jar')
+
+	if os.name != 'nt' and not os.path.exists(os.path.join('ziptools', 'zipadjust')):
+		header('* Building zipadjust')
+		# Compile zipadjust
+		proc = subprocess.run('gcc -o ziptools/zipadjust ziptools/zipadjust_src/*.c -lz', shell=True)
+		if proc.returncode != 0:
+			error('Build zipadjust failed!')
+	if not os.path.exists(zipsigner):
+		header('* Building zipsigner.jar')
+		os.chdir(os.path.join('ziptools', 'zipsigner'))
+		proc = subprocess.run('{} shadowJar'.format(os.path.join('.', 'gradlew')), shell=True)
+		if proc.returncode != 0:
+			error('Build zipsigner.jar failed!')
+		os.chdir(os.path.join('..', '..'))
+
+	header('* Signing / Adjusting Zip')
+
+	publicKey = os.path.join('ziptools', 'public.certificate.x509.pem')
+	privateKey = os.path.join('ziptools', 'private.key.pk8')
+
+	# Unsigned->signed
+	proc = subprocess.run(['java', '-jar', zipsigner,
+		publicKey, privateKey, unsigned, 'tmp_signed.zip'])
+	if proc.returncode != 0:
+		error('First sign flashable zip failed!')
+
+	# Adjust zip
+	proc = subprocess.run([os.path.join('ziptools', 'zipadjust'), 'tmp_signed.zip', 'tmp_adjusted.zip'])
+	if proc.returncode != 0:
+		error('Adjust flashable zip failed!')
+
+	# Adjusted -> output
+	proc = subprocess.run(['java', '-jar', zipsigner,
+		"-m", publicKey, privateKey, 'tmp_adjusted.zip', output])
+	if proc.returncode != 0:
+		error('Second sign flashable zip failed!')
+
+	# Cleanup
+	silentremove(unsigned)
+	silentremove('tmp_signed.zip')
+	silentremove('tmp_adjusted.zip')
+
+def gen_update_binary():
+	update_bin = []
+	binary = os.path.join('libs', 'armeabi-v7a', 'b64xz')
+	if not os.path.exists(binary):
+		error('Please build \'binary\' before zipping!')
+	with open(binary, 'rb') as b64xz:
+		update_bin.append('#! /sbin/sh\nEX_ARM=')
+		update_bin.append(''.join("\\\\x{:02X}".format(c) for c in b64xz.read()))
+	binary = os.path.join('libs', 'x86', 'b64xz')
+	with open(binary, 'rb') as b64xz:
+		update_bin.append('\nEX_X86=')
+		update_bin.append(''.join("\\\\x{:02X}".format(c) for c in b64xz.read()))
+	binary = os.path.join('libs', 'armeabi-v7a', 'busybox')
+	with open(binary, 'rb') as busybox:
+		update_bin.append('\nBB_ARM=')
+		update_bin.append(base64.b64encode(lzma.compress(busybox.read())).decode('ascii'))
+	binary = os.path.join('libs', 'x86', 'busybox')
+	with open(binary, 'rb') as busybox:
+		update_bin.append('\nBB_X86=')
+		update_bin.append(base64.b64encode(lzma.compress(busybox.read())).decode('ascii'))
+		update_bin.append('\n')
+	with open(os.path.join('scripts', 'update_binary.sh'), 'r') as script:
+		update_bin.append(script.read())
+	return ''.join(update_bin)
+
+def zip_main(args):
+	header('* Packing Flashable Zip')
+
+	with zipfile.ZipFile('tmp_unsigned.zip', 'w', compression=zipfile.ZIP_DEFLATED, allowZip64=False) as zipf:
+		# META-INF
+		# update-binary
+		target = os.path.join('META-INF', 'com', 'google', 'android', 'update-binary')
+		print('zip: ' + target)
+		zipf.writestr(target, gen_update_binary())
+		# updater-script
+		source = os.path.join('scripts', 'flash_script.sh')
+		target = os.path.join('META-INF', 'com', 'google', 'android', 'updater-script')
+		zip_with_msg(zipf, source, target)
+
+		# Binaries
+		for lib_dir, zip_dir in [('arm64-v8a', 'arm64'), ('armeabi-v7a', 'arm'), ('x86', 'x86'), ('x86_64', 'x64')]:
+			for binary in ['magisk', 'magiskboot']:
+				source = os.path.join('libs', lib_dir, binary)
+				target = os.path.join(zip_dir, binary)
+				zip_with_msg(zipf, source, target)
+		source = os.path.join('libs', 'arm64-v8a', 'magiskinit')
+		target = os.path.join('arm64', 'magiskinit')
+		zip_with_msg(zipf, source, target)
+
+		# APK
+		source = os.path.join('MagiskManager', 'app', 'build', 'outputs', 'apk',
+			'release' if args.release else 'debug', 'app-release.apk' if args.release else 'app-debug.apk')
+		target = os.path.join('common', 'magisk.apk')
+		zip_with_msg(zipf, source, target)
+
+		# Scripts
+		# boot_patch.sh
+		source = os.path.join('scripts', 'boot_patch.sh')
+		target = os.path.join('common', 'boot_patch.sh')
+		zip_with_msg(zipf, source, target)
+		# util_functions.sh
+		source = os.path.join('scripts', 'util_functions.sh')
+		with open(source, 'r') as script:
+			# Add version info util_functions.sh
+			util_func = script.read().replace(
+				'MAGISK_VERSION_STUB', 'MAGISK_VER="{}"\nMAGISK_VER_CODE={}'.format(args.versionString, args.versionCode))
+			target = os.path.join('common', 'util_functions.sh')
+			print('zip: ' + source + ' -> ' + target)
+			zipf.writestr(target, util_func)
+		# addon.d.sh
+		source = os.path.join('scripts', 'addon.d.sh')
+		target = os.path.join('addon.d', '99-magisk.sh')
+		zip_with_msg(zipf, source, target)
+		# init.magisk.rc
+		source = os.path.join('scripts', 'init.magisk.rc')
+		target = os.path.join('common', 'init.magisk.rc')
+		zip_with_msg(zipf, source, target)
+
+		# Prebuilts
+		for chromeos in ['futility', 'kernel_data_key.vbprivk', 'kernel.keyblock']:
+			source = os.path.join('chromeos', chromeos)
+			zip_with_msg(zipf, source, source)
+
+		# End of zipping
+
+	output = 'Magisk-v{}.zip'.format(args.versionString)
+	sign_adjust_zip('tmp_unsigned.zip', output)
+
+def zip_uninstaller(args):
+	header('* Packing Uninstaller Zip')
+
+	with zipfile.ZipFile('tmp_unsigned.zip', 'w', compression=zipfile.ZIP_DEFLATED, allowZip64=False) as zipf:
+		# META-INF
+		# update-binary
+		target = os.path.join('META-INF', 'com', 'google', 'android', 'update-binary')
+		print('zip: ' + target)
+		zipf.writestr(target, gen_update_binary())
+		# updater-script
+		source = os.path.join('scripts', 'uninstaller_loader.sh')
+		target = os.path.join('META-INF', 'com', 'google', 'android', 'updater-script')
+		zip_with_msg(zipf, source, target)
+
+		# Binaries
+		for lib_dir, zip_dir in [('arm64-v8a', 'arm64'), ('armeabi-v7a', 'arm'), ('x86', 'x86'), ('x86_64', 'x64')]:
+			source = os.path.join('libs', lib_dir, 'magiskboot')
+			target = os.path.join(zip_dir, 'magiskboot')
+			zip_with_msg(zipf, source, target)
+
+		source = os.path.join('scripts', 'magisk_uninstaller.sh')
+		target = 'magisk_uninstaller.sh'
+		zip_with_msg(zipf, source, target)
+
+		# Scripts
+		# util_functions.sh
+		source = os.path.join('scripts', 'util_functions.sh')
+		with open(source, 'r') as script:
+			# Remove the stub
+			util_func = script.read().replace(
+				'MAGISK_VERSION_STUB', '')
+			target = os.path.join('util_functions.sh')
+			print('zip: ' + source + ' -> ' + target)
+			zipf.writestr(target, util_func)
+
+		# Prebuilts
+		for chromeos in ['futility', 'kernel_data_key.vbprivk', 'kernel.keyblock']:
+			source = os.path.join('chromeos', chromeos)
+			zip_with_msg(zipf, source, source)
+
+		# End of zipping
+
+	output = 'Magisk-uninstaller-{}.zip'.format(datetime.datetime.now().strftime('%Y%m%d'))
+	sign_adjust_zip('tmp_unsigned.zip', output)
+
+def cleanup(args):
+	if len(args.target) == 0:
+		args.target = ['binary', 'apk', 'zip']
+
+	if 'binary' in args.target:
+		header('* Cleaning Magisk binaries')
+		subprocess.run(os.path.join(os.environ['ANDROID_HOME'], 'ndk-bundle', 'ndk-build') + ' clean', shell=True)
+
+	if 'apk' in args.target:
+		header('* Cleaning Magisk Manager')
+		os.chdir('MagiskManager')
+		subprocess.run('{} clean'.format(os.path.join('.', 'gradlew')), shell=True)
+		os.chdir('..')
+
+	if 'zip' in args.target:
+		header('* Cleaning created zip files')
+		for f in os.listdir('.'):
+			if '.zip' in f:
+				print('rm {}'.format(f))
+				silentremove(f)
+
+parser = argparse.ArgumentParser(description='Magisk build script')
+parser.add_argument('--release', action='store_true', help='compile Magisk for release')
+subparsers = parser.add_subparsers(title='actions')
+
+all_parser = subparsers.add_parser('all', help='build everything and create flashable zip with uninstaller')
+all_parser.add_argument('versionString')
+all_parser.add_argument('versionCode', type=int)
+all_parser.set_defaults(func=build_all)
+
+binary_parser = subparsers.add_parser('binary', help='build Magisk binaries')
+binary_parser.add_argument('versionString')
+binary_parser.add_argument('versionCode', type=int)
+binary_parser.set_defaults(func=build_binary)
+
+apk_parser = subparsers.add_parser('apk', help='build Magisk Manager APK')
+apk_parser.set_defaults(func=build_apk)
+
+zip_parser = subparsers.add_parser('zip', help='zip and sign Magisk into a flashable zip')
+zip_parser.add_argument('versionString')
+zip_parser.add_argument('versionCode', type=int)
+zip_parser.set_defaults(func=zip_main)
+
+uninstaller_parser = subparsers.add_parser('uninstaller', help='create flashable uninstaller')
+uninstaller_parser.set_defaults(func=zip_uninstaller)
+
+clean_parser = subparsers.add_parser('clean', help='clean [target...] targets: binary apk zip')
+clean_parser.add_argument('target', nargs='*')
+clean_parser.set_defaults(func=cleanup)
+
+if len(sys.argv) == 1:
+    parser.print_help()
+    sys.exit(1)
+
+args = parser.parse_args()
+
+args.func(args)

build.sh

@@ -1,170 +0,0 @@
-#!/bin/bash
-
-usage() {
-  echo "$0 all <version name>"
-  echo -e "\tBuild binaries, zip, and sign Magisk"
-  echo -e "\tThis is equlivant to first --build, then --zip"
-  echo "$0 clean"
-  echo -e "\tCleanup compiled / generated files"
-  echo "$0 build"
-  echo -e "\tBuild the binaries with ndk"
-  echo "$0 zip <version name>"
-  echo -e "\tZip and sign Magisk"
-  echo "$0 uninstaller"
-  echo -e "\tZip and sign the uninstaller"
-  exit 1
-}
-
-cleanup() {
-  echo "************************"
-  echo "* Cleaning up"
-  echo "************************"
-  ndk-build clean 2>/dev/null
-  ls zip_static/arm/* | grep -v "busybox" | xargs rm -rfv
-  ls zip_static/arm64/* | grep -v "busybox" | xargs rm -rfv
-  ls zip_static/x86/* | grep -v "busybox" | xargs rm -rfv
-  ls zip_static/x64/* | grep -v "busybox" | xargs rm -rfv
-  rm -rfv zip_static/META-INF/com/google/android/update-binary 
-  rm -rfv zip_static/common/magic_mask.sh
-  rm -rfv uninstaller/arm
-  rm -rfv uninstaller/arm64
-  rm -rfv uninstaller/x86
-  rm -rfv uninstaller/x64
-}
-
-mkcp() {
-  [ ! -d "$2" ] && mkdir -p "$2"
-  cp -afv $1 $2
-}
-
-build_bin() {
-  echo "************************"
-  echo "* Building binaries"
-  echo "************************"
-  if [ -z `which ndk-build` ]; then
-    echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-    echo "! Please add ndk-build to PATH!"
-    echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-    exit 1
-  fi
-  ndk-build -j4
-  if [ $? -ne 0 ]; then
-    echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-    echo "! Magisk binary tools build failed...."
-    echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-    exit 1
-  fi
-  echo "************************"
-  echo "* Copying binaries"
-  echo "************************"
-  mkcp "libs/armeabi/*" zip_static/arm
-  mkcp libs/armeabi/bootimgtools uninstaller/arm
-  mkcp "libs/arm64-v8a/*" zip_static/arm64
-  mkcp libs/arm64-v8a/bootimgtools uninstaller/arm64
-  mkcp "libs/x86/*" zip_static/x86
-  mkcp libs/x86/bootimgtools uninstaller/x86
-  mkcp "libs/x86_64/*" zip_static/x64
-  mkcp libs/x86_64/bootimgtools uninstaller/x64
-}
-
-zip_package() {
-  if [ ! -f "zip_static/arm/bootimgtools" ]; then
-    echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-    echo "! Missing binaries!!"
-    echo "! Please run \"$0 build\" before zipping"
-    echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-    exit 1
-  fi
-  echo "************************"
-  echo "* Adding version info"
-  echo "************************"
-  sed "s/MAGISK_VERSION_STUB/Magisk v$1 Boot Image Patcher/g" scripts/flash_script.sh > zip_static/META-INF/com/google/android/update-binary
-  sed "s/MAGISK_VERSION_STUB/setprop magisk.version \"$1\"/g" scripts/magic_mask.sh > zip_static/common/magic_mask.sh
-  echo "************************"
-  echo "* Zipping Magisk v$1"
-  echo "************************"
-  cd zip_static
-  find . -type f -exec chmod 644 {} \;
-  find . -type d -exec chmod 755 {} \;
-  rm -rf "../Magisk-v$1.zip"
-  zip "../Magisk-v$1.zip" -r .
-  cd ../
-  sign_zip "Magisk-v$1.zip"
-}
-
-zip_uninstaller() {
-  if [ ! -f "uninstaller/arm/bootimgtools" ]; then
-    echo "! Missing binaries!!"
-    echo "! Please run \"$0 build\" before zipping"
-    exit 1
-  fi
-  echo "************************"
-  echo "* Zipping uninstaller"
-  echo "************************"
-  cd uninstaller
-  find . -type f -exec chmod 644 {} \;
-  find . -type d -exec chmod 755 {} \;
-  TIMESTAMP=$(date "+%Y%m%d")
-  rm -rf "../Magisk-uninstaller-$TIMESTAMP.zip"
-  zip "../Magisk-uninstaller-$TIMESTAMP.zip" -r .
-  cd ../
-  sign_zip "Magisk-uninstaller-$TIMESTAMP.zip"
-}
-
-sign_zip() {
-  if [ ! -f "zipsigntools/zipadjust" ]; then
-    echo "************************"
-    echo "* Compiling ZipAdjust"
-    echo "************************"
-    gcc -o zipsigntools/zipadjust zipsigntools/src/*.c -lz
-    if [ $? -ne 0 ]; then
-      echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-      echo "! ZipAdjust Build failed...."
-      echo "!!!!!!!!!!!!!!!!!!!!!!!!"
-      exit 1
-    fi
-    chmod 755 zipsigntools/zipadjust
-  fi
-  echo "************************"
-  echo "* First sign $1"
-  echo "************************"
-  java -jar "zipsigntools/signapk.jar" "zipsigntools/test.certificate.x509.pem" "zipsigntools/test.key.pk8" "$1" "${1%.*}-firstsign.zip"
-  echo "************************"
-  echo "* Adjusting $1"
-  echo "************************"
-  zipsigntools/zipadjust "${1%.*}-firstsign.zip" "${1%.*}-adjusted.zip"
-  echo "************************"
-  echo "* Final sign $1"
-  echo "************************"
-  java -jar "zipsigntools/signapk.jar" "zipsigntools/test.certificate.x509.pem" "zipsigntools/test.key.pk8" "${1%.*}-adjusted.zip" "${1%.*}-signed.zip"
-
-  mv "${1%.*}-signed.zip" "$1"
-  rm "${1%.*}-adjusted.zip" "${1%.*}-firstsign.zip"
-}
-
-DIR="$(cd "$(dirname "$0")"; pwd)"
-cd "$DIR"
-
-case $1 in
-  "all" )
-    [ -z "$2" ] && echo -e "! Missing version number\n" && usage
-    build_bin
-    zip_package $2
-    ;;
-  "clean" )
-    cleanup
-    ;;
-  "build" )
-    build_bin
-    ;;
-  "zip" )
-    [ -z "$2" ] && echo -e "! Missing version number\n" && usage
-    zip_package $2
-    ;;
-  "uninstaller" )
-    zip_uninstaller
-    ;;
-  * )
-    usage
-    ;;
-esac

docs/README.MD

@@ -0,0 +1,28 @@
+# Magisk Documentations
+(Updated on 2017.9.28) ([Changelog](changelog.md))
+
+## Table of Contents
+
+- [Introduction](#introduction)
+- [Procedure Diagram](https://cdn.rawgit.com/topjohnwu/Magisk/cc1809688299f1f8b5db494a234850852712c0c9/docs/procedures.html)
+- [Magisk Details](details.md)    
+    - [Boot Stages](details.md#boot-stages)
+    - [Magic Mount Details](details.md#magic-mount-details)
+    - [Simple Mount Details](details.md#simple-mount-details)
+- [Available Applets](applets.md)
+    - [magisk](applets.md#magisk)
+    - [su](applets.md#su)
+    - [resetprop](applets.md#resetprop)
+    - [magiskpolicy](applets.md#magiskpolicy)
+    - [magiskhide](applets.md#magiskhide)
+- [Modules and Repos](module_repo.md)
+    - [Modules and Templates](module_repo.md#magisk-module-format)
+    - [Submit Modules to Repo](module_repo.md#submit-your-module-to-magisk-modules-repo)
+- [Tips and Tricks](tips.md)
+    - [OTA Installation Tips](tips.md#ota-installation-tips)
+    - [Remove Files](tips.md#remove-files)
+    - [Remove Folders](tips.md#remove-folders)
+
+    
+## Introduction
+Magisk is a suite of open source tools for devices running Android version higher than 5.0 Lollipop (API 21). It establishes an environment which covers most Android aftermarket customization needs, such as root, boot scripts, SELinux patches, dm-verity/forceencrypt patches etc.. Furthermore, Magisk also provides a **Systemless Interface** to alter the system (or vendor) arbitrarily while the actual partitions stay completely intact, all of which accomplished by only patching the boot image, and adding some files into `/data`. With its systemless nature along with several other hacks, Magisk can hide modifications from device integrity verifications, one of the main target is to hide from [Google's SafetyNet API](https://developer.android.com/training/safetynet/index.html).

docs/applets.md

@@ -0,0 +1,166 @@
+## Available Applets
+Magisk has a core binary which acts as a multi-call program with many applets. Here is an introduction to all available applets.
+
+### magisk
+The magisk binary itself provides a lot of utility functions when called with the name `magisk`. They are used in both Magisk installation and module installation. The entry point for `init` to invoke magisk's boot procedures are also listed here.
+
+Command help message:
+
+```
+Usage: magisk [applet [arguments]...]
+   or: magisk [options]...
+
+Options:
+   -c                        print current binary version
+   -v                        print running daemon version
+   -V                        print running daemon version code
+   --list                    list all availible applets
+   --install [SOURCE] DIR    symlink all applets to DIR. SOURCE is optional
+   --createimg IMG SIZE      create ext4 image. SIZE is interpreted in MB
+   --imgsize IMG             report ext4 image used/total size
+   --resizeimg IMG SIZE      resize ext4 image. SIZE is interpreted in MB
+   --mountimg IMG PATH       mount IMG to PATH and prints the loop device
+   --umountimg PATH LOOP     unmount PATH and delete LOOP device
+   --[boot stage]            start boot stage service
+   --unlock-blocks           set BLKROSET flag to OFF for all block devices
+
+Supported boot stages:
+   post-fs, post-fs-data, service
+
+Supported applets:
+    su, resetprop, magiskpolicy, supolicy, magiskhide
+```
+
+### su
+The MagiskSU entrypoint. Call `su` to gain a root shell.
+
+Command help message:
+
+```
+Usage: su [options] [--] [-] [LOGIN] [--] [args...]
+
+Options:
+  -c, --command COMMAND         pass COMMAND to the invoked shell
+  -h, --help                    display this help message and exit
+  -, -l, --login                pretend the shell to be a login shell
+  -m, -p,
+  --preserve-environment        do not change environment variables
+  -s, --shell SHELL             use SHELL instead of the default /system/bin/sh
+  -u                            display the multiuser mode and exit
+  -v, --version                 display version number and exit
+  -V                            display version code and exit,
+                                this is used almost exclusively by Superuser.apk
+  -mm, -M,
+  --mount-master                run in the global mount namespace,
+                                use if you need to publicly apply mounts
+```
+
+Note: even though the `-Z, --context` option is not listed above, it actually still exists. However MagiskSU will silently ignore the option since it's not needed anymore. It is still left over because some apps still request root shell with specific contexts as an option.
+
+### resetprop
+An advanced system prop manipulation utility; you can arbitrarily alter system props using this tool. Here's some background knowledge:
+
+> System props are stored in a hybrid trie/binary tree data structure in memory; it was originally designed to only support adding nodes, and no nodes should be removed. Props can be read by many processes (e.g. via the `getprop` command); however, only the `init` process have write access to the property data. `init` provides a `property_service` to accept property update requests, so all property changes are monitored and controlled by `init` Restrictions such as **read-only** props (props that starts with `ro.`), which can only be set once and cannot be changed afterwards, is therefore implemented in `init`.
+
+**resetprop** acts just like `init`: directly access the data structure, bypassing the whole `property_service` part. Doing so, we gain **arbitrary modification** power, including altering read-only props and deleting properties. Delete properties, which was stated *"forbidden"* in the data structure, is implemented through some tricks in the data structure.
+
+One subtle thing to be aware of is that if we change props by directly modifying the data structure, `on property:foo=bar` triggers registered in `*.rc` scripts will not be triggered properly. This may be a good thing or a bad thing, depending on what behavior you expect. I made the default behavior to match the original setprop command, which **WILL** trigger events, but of course I provide a flag (`-n`) to disable it if you need this special behavior.
+
+Command help message:
+
+```
+Usage: resetprop [options] [args...]
+
+Options:
+   -v      show verbose output
+   -n      only modify property in memory
+
+resetprop  NAME VALUE        set property entry NAME with VALUE
+resetprop  --file FILE       load props from FILE
+resetprop  --delete NAME     remove prop entry NAME
+```
+
+### magiskpolicy
+(This tool is aliased to `supolicy` for compatibility)
+
+A tool to patch `sepolicy`. **magiskpolicy** also comes with built-in rules to unleash restrictions to make Magisk work properly. `sepolicy` is a compiled binary containing SELinux rules; we directly patch rules in the binary format since we don't have access to the SELinux policy source (`*.te`) files.
+
+The Magisk daemon itself, the root shell, and all processes spawned from the daemon and root shell are all running in the context `u:r:su:s0`. This context is not only patched to be permissive, but also patched to allow any transition from `u:r:su:s0` to any domain. This was done because Samsung devices do not support permissive out of the box.
+
+The built in patches are split to 3 parts: minimal, medium, and large. The full patch will result in a huge policy file, which might cause the `sepolicy` file unable to fit in `boot.img`.
+
+- The minimal patch is just enough to start Magisk daemon and allow the daemon to further patch the policy during boot time (which is called **live patch**). It is done at installation and directly into `boot.img`. 
+- The medium patch covers most common operations, and is live patched as soon as Magisk daemon is started (blocking boot process).
+- The large patch contains the full patch. Due to the concern of greatly increasing the boot time, it is designed to run in the background until it's joined in the non-blocking late_start bootstage.
+
+What this all means is that **only late_start service mode is guaranteed to run in a fully patched environment**. If any script is not time critical, it is **highly recommended to run those scripts in late_start service mode**.
+
+Command help message:
+
+```
+Usage: magiskpolicy [--options...] [policystatements...]
+
+Options:
+  --live                directly load patched policy to device
+  --minimal             minimal patches, used for boot image patches
+  --load <infile>       load policies from <infile>
+                        (load from live policies if not specified)
+  --save <outfile>      save policies to <outfile>
+
+One policy statement should be treated as one parameter;
+this means a full policy statement should be enclosed in quotes;
+multiple policy statements can be provided in a single command
+
+The statements has a format of "<action> [args...]"
+Use '*' in args to represent every possible match.
+Collections wrapped in curly brackets can also be used as args.
+
+Supported policy statements:
+
+Type 1:
+"<action> source-class target-class permission-class permission"
+Action: allow, deny, auditallow, auditdeny
+
+Type 2:
+"<action> source-class target-class permission-class ioctl range"
+Action: allowxperm, auditallowxperm, dontauditxperm
+
+Type 3:
+"<action> class"
+Action: create, permissive, enforcing
+
+Type 4:
+"attradd class attribute"
+
+Type 5:
+"typetrans source-class target-class permission-class default-class (optional: object-name)"
+
+Notes:
+- typetrans does not support the all match '*' syntax
+- permission-class cannot be collections
+- source-class and target-class can also be attributes
+
+Example: allow { source1 source2 } { target1 target2 } permission-class *
+Will be expanded to:
+
+allow source1 target1 permission-class { all-permissions }
+allow source1 target2 permission-class { all-permissions }
+allow source2 target1 permission-class { all-permissions }
+allow source2 target2 permission-class { all-permissions }
+```
+
+### magiskhide
+This is the CLI to control the state of MagiskHide.
+
+Command help message: 
+
+```
+Usage: magiskhide [--options [arguments...] ]
+
+Options:
+  --enable          Start magiskhide
+  --disable         Stop magiskhide
+  --add PROCESS     Add PROCESS to the hide list
+  --rm PROCESS      Remove PROCESS from the hide list
+  --ls              Print out the current hide list
+```

docs/changelog.md

@@ -0,0 +1,6 @@
+# Changelog
+- 2017.8.16
+    - Initial version for Magisk v13.5
+- 2017.9.28
+    - Update applets info to Magisk v14.1
+    - Add OTA tips

docs/details.md

@@ -0,0 +1,60 @@
+## Boot Stages
+If you are working on complicated projects, you shall need more control to the whole process. Magisk can run scripts in different boot stages, so you can fine tune exactly what you want to do. It's recommended to read this documentation along with the procedure graph.
+
+- post-fs mode
+    - **This stage is BLOCKING. Boot process will NOT continue until everything is done, or 20 seconds has passed**
+    - Happens after most partitions are mounted, except `/data`
+    - Magisk will bind mount files under `/cache/magisk_mount/system` to corresponding paths
+    - It is only **Simple Mount**, which means it will replace existing files, but cannot add/remove files.
+- post-fs-data mode
+    - **This stage is BLOCKING. Boot process will NOT continue until everything is done, or 60 seconds has passed**
+    - Happens after `/data` is ready (including the case when `/data` is encrypted)
+    - Happens before Zygote and system servers are started (which means pretty much everything)
+    - Mirrors will be mounted. These mirrors play a critical role in **Magic Mount**
+    - `/data/magisk.img` will be merged, trimmed, and mounted to `/magisk`
+    - Magisk will run scripts under `/magisk/.core/post-fs-data.d`
+    - Magisk will run scripts: `/magisk/$MODID/post-fs-data.sh` (placed in each module directory)
+    - Magisk will finally **Magisk Mount** module files
+- late_start service mode
+    - **This stage is NON-BLOCKING, it will run in parallel with other processes**
+    - Happens when class late_start is started
+    - Put time consuming but non time critical tasks here. Boot process will be stuck if it took too long to finish your tasks in previous modes
+    - SELinux is guaranteed to be fully patched in this stage; **it is recommended to run most scripts in this stage**, unless your scripts require some time critical operations
+    - Magisk will run scripts under `/magisk/.core/service.d`
+    - Magisk will run scripts: `/magisk/$MODID/service.sh` (placed in each module directory)
+
+## Magic Mount Details
+### Terminology
+- **Item**: A folder, file, or symbolic link
+- **Leaf**: The very end of a directory structure tree, can be either a file or symbolic link
+- **`$MODPATH`**: A variable to represent the path of a module folder
+- **Source item**: An item under `$MODPATH/system`, for example, `$MODPATH/system/build.prop` is a source item
+- **Existing item**: An item under `/system`, for example, `/system/bin/app_process` is an existing item
+- **Target item**: A corresponding item of a source item. For example, the target item of `$MODPATH/system/build.prop` is `/system/build.prop`
+
+Note: A target item does not imply it is an existing item. A target item might not exist in the actual `/system`
+
+### Policies
+- For a source leaf: if its target item is also an existing item, the existing item will be replaced with the source leaf
+- For a source leaf: if its target item is not an existing item, the source leaf will be added to the path of its target item
+- For any existing item that's not a target item, it will stay intact
+
+Above is the rule of thumb. Basically it means that Magic Mount merges the files from `$MODPATH/system` into the real `/system`. A simpler way to understand is to think as it dirty copies the contents from `$MODPATH/system` into `/system`.
+
+However, an addition rule will override the above policies:
+
+- For a source folder containing the file `.replace`, the source folder will be treated as if it is a source leaf. That is, the items within the target folder will be completely discarded, and the target folder will be replaced with the source folder.
+
+Directories containing a file named `.replace` will NOT be merged into the system. It will directly replace the target directory. A simpler way to understand is to think as if it wipes the target folder, and then copies the whole folder to the target path.
+
+### Notes
+- Sometimes, completely replacing a folder is inevitable. For example you want to replace `/system/priv-app/SystemUI` in your stock rom. In stock roms, system apps usually comes with pre-optimized files. If your replacement `SystemUI.apk` is deodexed (which is most likely the case), you would want to replace the whole `/system/priv-app/SystemUI` to make sure the folder only contains the modified `SystemUI.apk` and **NOT** merge with the pre-optimized files.
+- If you are using the [Magisk Module Template](https://github.com/topjohnwu/magisk-module-template), you can create a list of folders you want to replace in the file `config.sh`. The installation scripts will handle the creation of `.replace` files into the listed folders for you.
+- Adding non-existing target items is a relatively expensive operation. Magisk would need to do **MANY** under-the-hood tasks to achieve it. Replacing a whole folder is recommended if viable, it reduces the complexity of the construction of the mounting tree and could speed up the booting time
+
+## Simple Mount Details
+Some files require to be mounted much earlier in the boot process, currently known are bootanimation and some libs (most users won't change them). You can simply place your modified files into the corresponding path under `/cache/magisk_mount`. At boot time, Magisk will **clone all the attributes from the target file**, which includes selinux context, permission mode, owner, group. It'll then bind mount the file to the target. This means you don't need to worry about the metadatas for files placed under `/cache/magisk_mount`: copy the file to the correct place, reboot then you're done!
+
+This mode does not feature the same complex Magic Mount implementation, it will mount a source leaf to an existing target item under `/system`.
+
+For example, you want to replace `/system/media/bootanimation.zip`, copy your new boot animation zip to `/cache/magisk_mount/system/media/bootanimation.zip,` Magisk will mount your files in the next reboot.

docs/module_repo.md

@@ -0,0 +1,76 @@
+# Magisk Modules and Online Repo
+## Magisk Module Format
+The Magisk module is a folder under `magisk`, which has a structure as described below:
+
+```
+magisk
+├── .
+├── .
+├── a_module                <--- The ID of the module, should match with module.prop
+│   ├── auto_mount          <--- If this file exists, auto mount is enabled
+│   ├── disable             <--- If this file exists, the module is disabled
+│   ├── module.prop         <--- This files stores the indentity and properties of the module
+│   ├── post-fs-data.sh     <--- This script will be executed in post-fs-data
+│   ├── remove              <--- If this file exists, the module will be removed next reboot
+│   ├── service.sh          <--- This script will be executed in late_start service
+│   ├── system.prop         <--- This file will be loaded as system props
+│   ├── system              <--- If auto mount is enabled, Magisk will "Magic Mount" this folder
+│   │   ├── app
+│   │   ├── .
+│   │   └── .
+│   ├── vendor              <--- Auto generated. A symlink to $MODID/system/vendor
+│   ├── .                   <--- Any other files/folders are allowed
+│   └── .		
+├── another_module
+│   ├── .
+│   └── .
+├── .
+├── .
+```
+
+## Magisk Module Template
+The **Magisk Module Template** is hosted **[here](https://github.com/topjohnwu/magisk-module-template)**.
+
+It is a template to create a flashable zip to install Magisk Modules. It is created to be simple to use so that anyone can create their own modules easily. The template itself contains minimal scripting for installation; most of the functions are located externally in [util_functions.sh](https://github.com/topjohnwu/Magisk/blob/master/scripts/util_functions.sh), which will be installed along with Magisk, and can be upgraded through a Magisk upgrade without the need of a template update.
+
+The template should meet most modules' needs. Add files into `system`, which will be cloned into `/system` by Magisk after installing the module, and in addition to module files, `system.prop`, `post-fs-data.sh`, `service.sh` are also installable through this template.
+
+Here are some files you would want to know:
+
+- `config.sh`: A simple script used as a configuration file for the actual installation file to correctly install your module. It is the place you can select which features your module needs/disables.
+- `module.prop`: This file contains your module's indentity and properties, including name and versions etc.. This file will be used to identify your module on an actual device and in the [Magisk Modules Repo](https://github.com/Magisk-Modules-Repo)
+- `common/*`: These files will be installed to the module with the correspond role
+- `META-INF/com/google/android/update-binary`: The actual installation script. Modify this file for advanced custom behavior
+
+## Create a Magisk Module With The Template
+1. Clone / download [this repo](https://github.com/topjohnwu/magisk-module-template)
+1. Open `config.sh` and carefully read the fully documented file. Follow the instructions within the script
+1. You should at least have `config.sh` and `module.prop` modified
+1. Directly zip all files; the result zip file is a flashable zip that can be used in both Magisk Manager and custom recoveries
+1. Please check [**Notes**](#notes) for several precautions
+
+## Submit Your Module to Magisk Modules Repo
+If you want to share your module with others, you can submit your modules to [Magisk Modules Repo](https://github.com/Magisk-Modules-Repo). You would need some basic `git` knowledge here.
+
+1. Create a module as stated above, and test if it works properly
+1. Fork [this repo](https://github.com/topjohnwu/magisk-module-template) to your account
+1. Commit and push your changes to your forked repo
+1. Open an issue in [topjohnwu/Magisk_Repo_Central](https://github.com/topjohnwu/Magisk_Repo_Central/issues/new) with your repo link
+1. I will review your module, and once accepted, your repo should be cloned into [Magisk-Modules-Repo](https://github.com/Magisk-Modules-Repo)
+1. You should receive an email to become the collaborator so you can edit the repo in the future.
+
+#### Once your module is live on the Modules Repo, the description of your repo should be the ID of your module. Please do NOT change the description, repeat, do NOT change the description.
+
+![repo_description.png](images/repo_description.png)
+
+## Notes
+- The Module Template depends on external scripts, be aware of the minimal required Magisk version of the template.
+- **Windows users please check here!!** The line endings of all text files should be in the **Unix format**. Please use advanced text editors like Sublime, Atom, Notepad++ etc. to edit **ALL** text files, **NEVER** use Windows Notepad.
+- In `module.prop`, `version` can be an arbitrary string, so any fancy version name (e.g. ultra-beta-v1.1.1.1) is allowed. However, `versionCode` **MUST** be an integer. The value is used for version comparison.
+- Make sure your module ID **does not contain any spaces**.
+
+## Notes For Repo Developers
+
+- Magisk Manager monitors all repo's `master` branch. Any changes to the branch `master` will be reflected to all users immediately. If you are working on an update for a module, please work on another branch, make sure it works, then finally merge the changes back to `master`.
+- Once you finished upgrading your repo, increase at least the `versionCode` in `module.prop`. Magisk Manager uses this value to compare with the local installed module to determine whether an update is availible.
+- The description of your repo should be the same as your module ID. If you changed your description, Magisk Manager will fail to identify your repo, and cannot relate installed module to the online repo together.

docs/tips.md

@@ -0,0 +1,53 @@
+# Tips and Tricks
+
+## OTA Installation Tips
+Magisk do modifications systemless-ly, which means applying official OTAs is much simpler. Here I provide a few tutorials for several different kind of devices to apply OTAs and preserve Magisk after the installation if possible.
+
+**This tutorial is only for Magisk v14.1+**
+
+**NOTE: In order to apply OTAs, you HAVE to make sure you haven't modified `/system` (and `/vendor` if available) in anyway, even remounting the partition to rw will tamper block verification!!**
+
+#### Prerequisites
+1. Please disable *Automatic system updates* in developer options, so it won't install OTAs without your acknowledgement.  
+    <img src="images/disable_auto_ota.png" width="250">
+1. When an OTA is available, please go to Magisk Manager → Uninstall → Restore Stock Boot. **Do not reboot immediately or you will have Magisk uninstalled.** This will restore your boot back to 100% untouched stock boot image in order to pass boot verification. **This step is required before doing any of the following steps written below!**  
+    <img src="images/restore_boot.png" width="250">
+
+#### Devices with A/B Partitions
+(Includes Pixel family)
+
+Due to the fact that these devices have two separate partitions and the OTA installation happens live when the system is still running, these devices have the best support: the out-of-the-box OTA installation works seamlessly and Magisk will be preserved after the installation.
+
+1. After restoring stock boot image, apply OTAs as you normally would (Settings → System → System Updates)
+1. Once the installation passed step 1 and starting step 2, go to Magisk Manager → Install → Install to Second Slot. This will install Magisk into the second boot image slot, which is the updated slot.  
+    <img src="images/ota_step2.png" width="250"> <img src="images/install_second_slot.png" width="250">
+1. Let the OTA finish its job. After a reboot, the bootloader will switch to the updated system. Magisk should still be installed since we already patched the new boot image.
+
+#### Devices with FlashFire Support
+(Includes Pixel family, Nexus family, Samsung devices)  
+(If you are using a device with A/B partitions, I **strongly** recommend you to use the method stated above since it uses the stock OTA installation mechanism and will always work under any circumstances)
+
+The [FlashFire](https://play.google.com/store/apps/details?id=eu.chainfire.flash) app developed by Chainfire is a great app to apply OTAs and preserve root at the same time. However, whether it supports your device/system combination depends on the application itself, and support may also change in the future. If you face any issues, please directly [report to Chainfire](https://forum.xda-developers.com/general/paid-software/flashfire-t3075433).  
+
+1. After restoring the stock boot image, download the OTA (Settings → System → System Updates), **do not press reboot to install.**
+1. Open FlashFire, it should detect your OTA zip. Select OK in the popup dialog to let it do its setup.
+1. Please use the options shown in the screenshot below. The key point is to disable EverRoot (or it will install SuperSU), and add a new action to flash Magisk zip **after** the OTA update.zip (the update.zip is auto generated in the previous step).  
+    <img src="images/flashfire.png" width="250">
+1. Press the big **Flash** button, after a few minutes it should reboot updated with Magisk installed.
+
+#### Other Devices - General Case
+Unfortunately, there are no real good ways to apply OTAs on all devices. Also, the tutorial provided below will not preserve Magisk - you will have to manually re-root your device after the upgrade, and this will require PC access. Here I share my personal experience with my daily driver - HTC U11.
+
+1. To properly install OTAs, you should have your stock recovery installed on your device. If you have custom recovery installed, you can restore it from your previous backup, or dumps found online, or factory images provided by OEMs.  
+If you decide to start by installing Magisk without touching your recovery partition, you have a few choices, either way you will end up with a Magisk rooted device, but recovery remain stock untouched:
+    - If supported, use `fastboot boot <recovery_img>` to boot the custom recovery and install Magisk. 
+    - If you have a copy of your stock boot image dump, install Magisk by patching boot image via Magisk Manager, and manually flash it through download mode / fastboot mode / Odin
+1. Once your device have stock recovery and stock boot image restored, download the OTA. Optionally, once you downloaded the OTA update zip, you can find a way to copy the zip out since you are still rooted. Personally I will extract the stock boot image and recovery image from the OTA zip for future usage (to patch via Magisk Manager or restore stock recovery etc.)
+1. Apply and reboot your device. This will use the official stock OTA installation mechanism of your device to upgrade your system.
+1. Once it's done you will be left with an upgraded, 100% stock, un-rooted device. You will have to manually flash Magisk back. Consider using the methods stated in step 1. to flash Magisk without touching the recovery partition if you want to receive stock OTAs frequently.
+
+## Remove Files
+How to efficiently remove a file systemless-ly? To actually make the file **disappear** is complicated (possible, not worth the effort). **Replacing it with a dummy file should be good enough**! Create an empty file with the same name and place it in the same path within a module, it shall replace your target file with a dummy file.
+
+## Remove Folders
+Same as mentioned above, actually making the folder to **disappear** is not worth the effort. **Replacing it with an empty folder should be good enough**! A handy trick for module developers using [Magisk Module Template](https://github.com/topjohnwu/magisk-module-template) is to add the folder you want to remove into the `REPLACE` list within `config.sh`. If your module doesn't provide a correspond folder, it will create an empty folder, and automatically add `.replace` into the empty folder so the dummy folder will properly replace the one in `/system`.

jni/Android.mk

@@ -1,35 +1,127 @@
-my_path := $(call my-dir)
+LOCAL_PATH := $(call my-dir)
 
-LOCAL_PATH := $(my_path)
+# Some handy paths
+JNI_ROOT := jni
+SELINUX_PATH := jni/external/selinux
+COMPRESS_LIB := jni/external/ndk-compression
+DTC_PATH := jni/external/dtc
+LIBSELINUX := $(SELINUX_PATH)/libselinux/include
+LIBSEPOL := $(SELINUX_PATH)/libsepol/include $(SELINUX_PATH)/libsepol/cil/include
+LIBZ := $(COMPRESS_LIB)/zlib
+LIBLZMA := $(COMPRESS_LIB)/xz/src/liblzma/api
+LIBLZ4 := $(COMPRESS_LIB)/lz4/lib
+LIBBZ2 := $(COMPRESS_LIB)/bzip2
+LIBFDT := $(DTC_PATH)/libfdt
 
+########################
+# Binaries
+########################
+
+# magisk main binary
 include $(CLEAR_VARS)
-LOCAL_MODULE := magiskhide
-LOCAL_MODULE_TAGS := optional
-LOCAL_SRC_FILES := magiskhide.c
-LOCAL_CFLAGS += -std=gnu11
-include $(BUILD_EXECUTABLE)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := bootimgtools
-LOCAL_MODULE_TAGS := optional
-LOCAL_SRC_FILES := bootimgtools.c extract.c repack.c hexpatch.c
-LOCAL_CFLAGS += -std=gnu11
-include $(BUILD_EXECUTABLE)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := sepolicy-inject
-LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE := magisk
 LOCAL_STATIC_LIBRARIES := libsepol
-LOCAL_SRC_FILES := sepolicy-inject/sepolicy-inject.c sepolicy-inject/builtin_rules.c
-LOCAL_C_INCLUDES := selinux/libsepol/include/
-LOCAL_CFLAGS += -std=gnu11
+LOCAL_SHARED_LIBRARIES := libsqlite libselinux
+
+LOCAL_C_INCLUDES := \
+	jni/include \
+	jni/external \
+	$(LIBSELINUX) \
+	$(LIBSEPOL)
+
+LOCAL_SRC_FILES := \
+	daemon/magisk.c \
+	daemon/daemon.c \
+	daemon/socket_trans.c \
+	daemon/log_monitor.c \
+	daemon/bootstages.c \
+	utils/misc.c \
+	utils/vector.c \
+	utils/xwrap.c \
+	utils/list.c \
+	utils/img.c \
+	magiskhide/magiskhide.c \
+	magiskhide/proc_monitor.c \
+	magiskhide/hide_utils.c \
+	magiskpolicy/magiskpolicy.c \
+	magiskpolicy/rules.c \
+	magiskpolicy/sepolicy.c \
+	magiskpolicy/api.c \
+	resetprop/resetprop.cpp \
+	resetprop/system_properties.cpp \
+	su/su.c \
+	su/activity.c \
+	su/db.c \
+	su/pts.c \
+	su/su_daemon.c \
+	su/su_socket.c
+
+LOCAL_CFLAGS := -Wno-implicit-exception-spec-mismatch -DIS_DAEMON
+LOCAL_CPPFLAGS := -std=c++11
+LOCAL_LDLIBS := -llog
 include $(BUILD_EXECUTABLE)
 
+# magiskboot
 include $(CLEAR_VARS)
-LOCAL_MODULE := resetprop
-LOCAL_MODULE_TAGS := optional
-LOCAL_SRC_FILES := resetprop/resetprop.cpp resetprop/system_properties.cpp resetprop/libc_logging.cpp
-LOCAL_LDLIBS += -latomic
+LOCAL_MODULE := magiskboot
+LOCAL_STATIC_LIBRARIES := libz liblzma liblz4 libbz2 libfdt
+LOCAL_C_INCLUDES := \
+	jni/include \
+	$(LIBZ) \
+	$(LIBLZMA) \
+	$(LIBLZ4) \
+	$(LIBBZ2) \
+	$(LIBFDT)
+
+LOCAL_SRC_FILES := \
+	magiskboot/main.c \
+	magiskboot/bootimg.c \
+	magiskboot/hexpatch.c \
+	magiskboot/compress.c \
+	magiskboot/boot_utils.c \
+	magiskboot/cpio.c \
+	magiskboot/sha1.c \
+	magiskboot/types.c \
+	magiskboot/dtb.c \
+	utils/xwrap.c \
+	utils/vector.c
+LOCAL_CFLAGS := -DZLIB_CONST
 include $(BUILD_EXECUTABLE)
 
-include selinux/libsepol/Android.mk
+# magiskinit
+ifeq ($(TARGET_ARCH_ABI), arm64-v8a)
+include $(CLEAR_VARS)
+LOCAL_MODULE := magiskinit
+LOCAL_STATIC_LIBRARIES := libsepol
+LOCAL_C_INCLUDES := jni/include $(LIBSEPOL)
+LOCAL_SRC_FILES := \
+	magiskinit.c \
+	magiskboot/boot_utils.c \
+	utils/xwrap.c \
+	magiskpolicy/rules.c \
+	magiskpolicy/sepolicy.c \
+	magiskpolicy/api.c
+LOCAL_LDFLAGS := -static
+include $(BUILD_EXECUTABLE)
+endif
+
+# 32-bit static binaries
+ifneq ($(TARGET_ARCH_ABI), x86_64)
+ifneq ($(TARGET_ARCH_ABI), arm64-v8a)
+# b64xz
+include $(CLEAR_VARS)
+LOCAL_MODULE := b64xz
+LOCAL_STATIC_LIBRARIES := liblzma
+LOCAL_C_INCLUDES := $(LIBLZMA)
+LOCAL_SRC_FILES := b64xz.c
+LOCAL_LDFLAGS := -static
+include $(BUILD_EXECUTABLE)
+# Busybox
+include jni/external/busybox/Android.mk
+endif
+endif
+
+########################
+# Externals
+########################
+include jni/external/Android.mk

jni/Application.mk

@@ -1,5 +1,2 @@
-APP_ABI := x86 x86_64 armeabi arm64-v8a
-APP_PIE = true
+APP_ABI := x86 x86_64 armeabi-v7a arm64-v8a
 APP_PLATFORM := android-21
-APP_CPPFLAGS += -std=c++11
-# APP_STL := c++_static

jni/b64xz.c

@@ -0,0 +1,83 @@
+/* b64xz.c - Base64-XZ Extractor
+ *
+ * This program expects data from stdin. The data should be compressed with xz and
+ * then encoded into base64 format. What b64xz does is basically the reverse of the
+ * mentioned process: decode base64 to uint8_ts, decompress xz, then dump to stdout
+ *
+ * The compiled binary will be hex-dumped into update-binary
+ * Busybox will be xz-compressed, base64 encoded and dumped into update-binary
+ * This program is to recover busybox for Magisk installation environment
+ *
+ * I intentionally removed stdio. This will result in a smaller binary size because
+ * all I/O are handled by system calls (read/write) instead of libc wrappers
+ */
+
+#include <unistd.h>
+#include <lzma.h>
+
+#define BUFSIZE 8192
+
+static const char trans_tbl[] =
+		"|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW$$$$$$XYZ[\\]^_`abcdefghijklmnopq";
+
+static void decodeblock(uint8_t* in, uint8_t* out) {
+	out[0] = (uint8_t)(in[0] << 2 | in[1] >> 4);
+	out[1] = (uint8_t)(in[1] << 4 | in[2] >> 2);
+	out[2] = (uint8_t)(((in[2] << 6) & 0xc0) | in[3]);
+}
+
+static int unxz(lzma_stream *strm, void *buf, size_t size) {
+	lzma_ret ret = 0;
+	uint8_t out[BUFSIZE];
+	strm->next_in = buf;
+	strm->avail_in = size;
+	do {
+		strm->next_out = out;
+		strm->avail_out = sizeof(out);
+		ret = lzma_code(strm, LZMA_RUN);
+		write(STDOUT_FILENO, out, sizeof(out) - strm->avail_out);
+	} while (strm->avail_out == 0 && ret == LZMA_OK);
+
+	if (ret != LZMA_OK && ret != LZMA_STREAM_END)
+		write(STDERR_FILENO, "LZMA error!\n", 13);
+	return ret;
+}
+
+int main(int argc, char const* argv[]) {
+	if (argc > 1)
+		return 0;
+
+	uint8_t in[4], buf[BUFSIZE];
+	int len = 0, pos = 0;
+	char c;
+
+	// Setup lzma stream
+	lzma_stream strm = LZMA_STREAM_INIT;
+	if (lzma_auto_decoder(&strm, UINT64_MAX, 0) != LZMA_OK) {
+		write(STDERR_FILENO, "Unable to init lzma stream\n", 28);
+		return 1;
+	}
+
+	while (read(STDIN_FILENO, &c, sizeof(c)) == 1) {
+		c = ((c < 43 || c > 122) ? -1 : (trans_tbl[c - 43] == '$' ? -1 : trans_tbl[c - 43] - 62));
+		if (c >= 0)
+			in[len++] = c;
+		if (len < 4)
+			continue;
+		len = 0;
+		decodeblock(in, buf + pos);
+		pos += 3;
+		if (pos > sizeof(buf) - 3) {
+			// Buffer is full, unxz
+			if (unxz(&strm, buf, pos))
+				return 1;
+			pos = 0;
+		}
+	}
+	if (pos) {
+		if (unxz(&strm, buf, pos))
+			return 1;
+	}
+	lzma_end(&strm);
+	return 0;
+}

jni/bootimgtools.c

@@ -1,45 +0,0 @@
-#include <getopt.h>
-#include <stdio.h>
-
-#include "bootimgtools.h"
-
-/********************
-  Patch Boot Image
-*********************/
-
-int usage(char *arg0) {
-	fprintf(stderr, "Boot Image Unpack/Repack Tool\n");
-	fprintf(stderr, "%s --extract <bootimage>\n", arg0);
-	fprintf(stderr, "  Unpack <bootimage> into current directory\n\n");
-	fprintf(stderr, "%s --repack <bootimage>\n", arg0);
-	fprintf(stderr, "  Repack kernel, dt, ramdisk... from current directory to new-image.img\n  <bootimage> is the image you've just unpacked\n\n");
-	fprintf(stderr, "%s --hexpatch <bootimage> <hexpattern1> <hexpattern2>\n", arg0);
-	fprintf(stderr, "  Search <hexpattern1> in <bootimage>, and replace with <hexpattern2>\n\n");
-	return 1;
-}
-
-int main(int argc, char *argv[])
-{
-	char ch;
-	struct option long_options[] = {
-		{"extract", required_argument, NULL, 'e'},
-		{"repack", required_argument, NULL, 'r'},
-		{"hexpatch", required_argument, NULL, 'p'},
-		{NULL, 0, NULL, 0}
-	};
-	while ((ch = getopt_long(argc, argv, "e:r:p:", long_options, NULL)) != -1) {
-		switch (ch) {
-			case 'e':
-				return extract(optarg);
-			case 'r':
-				return repack(optarg);
-			case 'p':
-				if (argc < 5) return usage(argv[0]);
-				optind += 2;
-				return hexpatch(argv[optind - 3], argv[optind - 2], argv[optind - 1]);
-			default:
-				return usage(argv[0]);
-		}
-	}
-	return 0;
-}

jni/daemon/bootstages.c

@@ -0,0 +1,779 @@
+/* bootstages.c - Core bootstage operations
+ *
+ * All bootstage operations, including simple mount in post-fs,
+ * magisk mount in post-fs-data, various image handling, script
+ * execution, load modules, install Magisk Manager etc.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <dirent.h>
+#include <linux/loop.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/wait.h>
+#include <selinux/selinux.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "daemon.h"
+#include "resetprop.h"
+
+static char *buf, *buf2;
+static struct vector module_list;
+static int seperate_vendor = 0;
+
+extern char **environ;
+
+#ifdef MAGISK_DEBUG
+static int debug_log_pid, debug_log_fd;
+#endif
+
+/******************
+ * Node structure *
+ ******************/
+
+// Precedence: MODULE > SKEL > INTER > DUMMY
+#define IS_DUMMY   0x01    /* mount from mirror */
+#define IS_INTER   0x02    /* intermediate node */
+#define IS_SKEL    0x04    /* mount from skeleton */
+#define IS_MODULE  0x08    /* mount from module */
+
+#define IS_DIR(n)  (n->type == DT_DIR)
+#define IS_LNK(n)  (n->type == DT_LNK)
+#define IS_REG(n)  (n->type == DT_REG)
+
+struct node_entry {
+	const char *module;    /* Only used when status & IS_MODULE */
+	char *name;
+	uint8_t type;
+	uint8_t status;
+	struct node_entry *parent;
+	struct vector *children;
+};
+
+static void concat_path(struct node_entry *node) {
+	if (node->parent)
+		concat_path(node->parent);
+	int len = strlen(buf);
+	buf[len] = '/';
+	strcpy(buf + len + 1, node->name);
+}
+
+static char *get_full_path(struct node_entry *node) {
+	buf[0] = '\0';
+	concat_path(node);
+	return strdup(buf);
+}
+
+// Free the node
+static void destroy_node(struct node_entry *node) {
+	free(node->name);
+	vec_destroy(node->children);
+	free(node->children);
+	free(node);
+}
+
+// Free the node and all children recursively
+static void destroy_subtree(struct node_entry *node) {
+	// Never free parent, since it shall be freed by themselves
+	struct node_entry *e;
+	vec_for_each(node->children, e) {
+		destroy_subtree(e);
+	}
+	destroy_node(node);
+}
+
+// Return the child
+static struct node_entry *insert_child(struct node_entry *p, struct node_entry *c) {
+	c->parent = p;
+	if (p->children == NULL) {
+		p->children = xmalloc(sizeof(struct vector));
+		vec_init(p->children);
+	}
+	struct node_entry *e;
+	vec_for_each(p->children, e) {
+		if (strcmp(e->name, c->name) == 0) {
+			// Exist duplicate
+			if (c->status > e->status) {
+				// Precedence is higher, replace with new node
+				destroy_subtree(e);
+				vec_cur(p->children) = c;
+				return c;
+			} else {
+				// Free the new entry, return old
+				destroy_node(c);
+				return e;
+			}
+		}
+	}
+	// New entry, push back
+	vec_push_back(p->children, c);
+	return c;
+}
+
+/***********
+ * setenvs *
+ ***********/
+
+static void bb_setenv(struct vector *v) {
+	for (int i = 0; environ[i]; ++i) {
+		if (strncmp(environ[i], "PATH=", 5) == 0) {
+			snprintf(buf, PATH_MAX, "PATH=%s:%s", BBPATH, strchr(environ[i], '=') + 1);
+			vec_push_back(v, strdup(buf));
+		} else {
+			vec_push_back(v, strdup(environ[i]));
+		}
+	}
+	vec_push_back(v, NULL);
+}
+
+static void pm_setenv(struct vector *v) {
+	for (int i = 0; environ[i]; ++i) {
+		if (strncmp(environ[i], "CLASSPATH=", 10) != 0)
+			vec_push_back(v, strdup(environ[i]));
+	}
+	vec_push_back(v, strdup("CLASSPATH=/system/framework/pm.jar"));
+	vec_push_back(v, NULL);
+}
+
+/***********
+ * Scripts *
+ ***********/
+
+static void exec_common_script(const char* stage) {
+	DIR *dir;
+	struct dirent *entry;
+	snprintf(buf, PATH_MAX, "%s/%s.d", COREDIR, stage);
+
+	if (!(dir = opendir(buf)))
+		return;
+
+	while ((entry = xreaddir(dir))) {
+		if (entry->d_type == DT_REG) {
+			snprintf(buf2, PATH_MAX, "%s/%s", buf, entry->d_name);
+			if (access(buf2, X_OK) == -1)
+				continue;
+			LOGI("%s.d: exec [%s]\n", stage, entry->d_name);
+			int pid = exec_command(0, NULL, bb_setenv, "sh", buf2, NULL);
+			if (pid != -1)
+				waitpid(pid, NULL, 0);
+		}
+	}
+
+	closedir(dir);
+}
+
+static void exec_module_script(const char* stage) {
+	char *module;
+	vec_for_each(&module_list, module) {
+		snprintf(buf2, PATH_MAX, "%s/%s/%s.sh", MOUNTPOINT, module, stage);
+		snprintf(buf, PATH_MAX, "%s/%s/disable", MOUNTPOINT, module);
+		if (access(buf2, F_OK) == -1 || access(buf, F_OK) == 0)
+			continue;
+		LOGI("%s: exec [%s.sh]\n", module, stage);
+		int pid = exec_command(0, NULL, bb_setenv, "sh", buf2, NULL);
+		if (pid != -1)
+			waitpid(pid, NULL, 0);
+	}
+
+}
+
+/***************
+ * Magic Mount *
+ ***************/
+
+static void construct_tree(const char *module, struct node_entry *parent) {
+	DIR *dir;
+	struct dirent *entry;
+	struct node_entry *node;
+
+	char *parent_path = get_full_path(parent);
+	snprintf(buf, PATH_MAX, "%s/%s%s", MOUNTPOINT, module, parent_path);
+
+	if (!(dir = opendir(buf)))
+		goto cleanup;
+
+	while ((entry = xreaddir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		// Create new node
+		node = xcalloc(sizeof(*node), 1);
+		node->module = module;
+		node->name = strdup(entry->d_name);
+		node->type = entry->d_type;
+		snprintf(buf, PATH_MAX, "%s/%s", parent_path, node->name);
+
+		/*
+		 * Clone the parent in the following condition:
+		 * 1. File in module is a symlink
+		 * 2. Target file do not exist
+		 * 3. Target file is a symlink, but not /system/vendor
+		 */
+		int clone = 0;
+		if (IS_LNK(node) || access(buf, F_OK) == -1) {
+			clone = 1;
+		} else if (parent->parent != NULL || strcmp(node->name, "vendor") != 0) {
+			struct stat s;
+			xstat(buf, &s);
+			if (S_ISLNK(s.st_mode))
+				clone = 1;
+		}
+
+		if (clone) {
+			// Mark the parent folder as a skeleton
+			parent->status |= IS_SKEL;  /* This will not overwrite if parent is module */
+			node->status = IS_MODULE;
+		} else if (IS_DIR(node)) {
+			// Check if marked as replace
+			snprintf(buf2, PATH_MAX, "%s/%s%s/.replace", MOUNTPOINT, module, buf);
+			if (access(buf2, F_OK) == 0) {
+				// Replace everything, mark as leaf
+				node->status = IS_MODULE;
+			} else {
+				// This will be an intermediate node
+				node->status = IS_INTER;
+			}
+		} else if (IS_REG(node)) {
+			// This is a leaf, mark as target
+			node->status = IS_MODULE;
+		}
+		node = insert_child(parent, node);
+		if (node->status & (IS_SKEL | IS_INTER)) {
+			// Intermediate folder, travel deeper
+			construct_tree(module, node);
+		}
+	}
+
+	closedir(dir);
+
+cleanup:
+	free(parent_path);
+}
+
+static void clone_skeleton(struct node_entry *node) {
+	DIR *dir;
+	struct dirent *entry;
+	struct node_entry *dummy, *child;
+
+	// Clone the structure
+	char *full_path = get_full_path(node);
+	snprintf(buf, PATH_MAX, "%s%s", MIRRDIR, full_path);
+	if (!(dir = opendir(buf)))
+		goto cleanup;
+	while ((entry = xreaddir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		// Create dummy node
+		dummy = xcalloc(sizeof(*dummy), 1);
+		dummy->name = strdup(entry->d_name);
+		dummy->type = entry->d_type;
+		dummy->status = IS_DUMMY;
+		insert_child(node, dummy);
+	}
+	closedir(dir);
+
+	if (node->status & IS_SKEL) {
+		struct stat s;
+		char *con;
+		xstat(full_path, &s);
+		getfilecon(full_path, &con);
+		LOGI("tmpfs: %s\n", full_path);
+		mount("tmpfs", full_path, "tmpfs", 0, NULL);
+		chmod(full_path, s.st_mode & 0777);
+		chown(full_path, s.st_uid, s.st_gid);
+		setfilecon(full_path, con);
+		free(con);
+	}
+
+	vec_for_each(node->children, child) {
+		snprintf(buf, PATH_MAX, "%s/%s", full_path, child->name);
+
+		// Create the dummy file/directory
+		if (IS_DIR(child))
+			xmkdir(buf, 0755);
+		else if (IS_REG(child))
+			close(open_new(buf));
+		// Links will be handled later
+
+		if (child->parent->parent == NULL && strcmp(child->name, "vendor") == 0) {
+			if (IS_LNK(child)) {
+				cp_afc(MIRRDIR "/system/vendor", "/system/vendor");
+				LOGI("cplink: %s -> %s\n", MIRRDIR "/system/vendor", "/system/vendor");
+			}
+			// Skip
+			continue;
+		} else if (child->status & IS_MODULE) {
+			// Mount from module file to dummy file
+			snprintf(buf2, PATH_MAX, "%s/%s%s/%s", MOUNTPOINT, child->module, full_path, child->name);
+		} else if (child->status & (IS_SKEL | IS_INTER)) {
+			// It's an intermediate folder, recursive clone
+			clone_skeleton(child);
+			continue;
+		} else if (child->status & IS_DUMMY) {
+			// Mount from mirror to dummy file
+			snprintf(buf2, PATH_MAX, "%s%s/%s", MIRRDIR, full_path, child->name);
+		}
+
+		if (IS_LNK(child)) {
+			// Copy symlinks directly
+			cp_afc(buf2, buf);
+			#ifdef MAGISK_DEBUG
+				LOGI("cplink: %s -> %s\n",buf2, buf);
+			#else
+				LOGI("cplink: %s\n", buf);
+			#endif
+		} else {
+			snprintf(buf, PATH_MAX, "%s/%s", full_path, child->name);
+			bind_mount(buf2, buf);
+		}
+	}
+
+cleanup:
+	free(full_path);
+}
+
+static void magic_mount(struct node_entry *node) {
+	char *real_path;
+	struct node_entry *child;
+
+	if (node->status & IS_MODULE) {
+		// The real deal, mount module item
+		real_path = get_full_path(node);
+		snprintf(buf, PATH_MAX, "%s/%s%s", MOUNTPOINT, node->module, real_path);
+		bind_mount(buf, real_path);
+		free(real_path);
+	} else if (node->status & IS_SKEL) {
+		// The node is labeled to be cloned with skeleton, lets do it
+		clone_skeleton(node);
+	} else if (node->status & IS_INTER) {
+		// It's an intermediate node, travel deeper
+		vec_for_each(node->children, child)
+			magic_mount(child);
+	}
+	// The only thing goes here should be vendor placeholder
+	// There should be no dummies, so don't need to handle it here
+}
+
+/****************
+ * Simple Mount *
+ ****************/
+
+static void simple_mount(const char *path) {
+	DIR *dir;
+	struct dirent *entry;
+
+	snprintf(buf, PATH_MAX, "%s%s", CACHEMOUNT, path);
+	if (!(dir = opendir(buf)))
+		return;
+
+	while ((entry = xreaddir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		// Target file path
+		snprintf(buf2, PATH_MAX, "%s/%s", path, entry->d_name);
+		// Only mount existing file
+		if (access(buf2, F_OK) == -1)
+			continue;
+		if (entry->d_type == DT_DIR) {
+			char *new_path = strdup(buf2);
+			simple_mount(new_path);
+			free(new_path);
+		} else if (entry->d_type == DT_REG) {
+			// Actual file path
+			snprintf(buf, PATH_MAX, "%s%s", CACHEMOUNT, buf2);
+			// Clone all attributes
+			clone_attr(buf2, buf);
+			// Finally, mount the file
+			bind_mount(buf, buf2);
+		}
+	}
+
+	closedir(dir);
+}
+
+/*****************
+ * Miscellaneous *
+ *****************/
+
+static void mount_mirrors() {
+	LOGI("* Mounting mirrors");
+	struct vector mounts;
+	vec_init(&mounts);
+	file_to_vector("/proc/mounts", &mounts);
+	char *line;
+	int skip_initramfs = 0;
+	// Check whether skip_initramfs device
+	vec_for_each(&mounts, line) {
+		if (strstr(line, " /system_root ")) {
+			xmkdir_p(MIRRDIR "/system", 0755);
+			bind_mount("/system_root/system", MIRRDIR "/system");
+			skip_initramfs = 1;
+			break;
+		}
+	}
+	vec_for_each(&mounts, line) {
+		if (!skip_initramfs && strstr(line, " /system ")) {
+			sscanf(line, "%s", buf);
+			xmkdir_p(MIRRDIR "/system", 0755);
+			xmount(buf, MIRRDIR "/system", "ext4", MS_RDONLY, NULL);
+			#ifdef MAGISK_DEBUG
+				LOGI("mount: %s -> %s\n", buf, MIRRDIR "/system");
+			#else
+				LOGI("mount: %s\n", MIRRDIR "/system");
+			#endif
+			continue;
+		}
+		if (strstr(line, " /vendor ")) {
+			seperate_vendor = 1;
+			sscanf(line, "%s", buf);
+			xmkdir_p(MIRRDIR "/vendor", 0755);
+			xmount(buf, MIRRDIR "/vendor", "ext4", MS_RDONLY, NULL);
+			#ifdef MAGISK_DEBUG
+				LOGI("mount: %s -> %s\n", buf, MIRRDIR "/vendor");
+			#else
+				LOGI("mount: %s\n", MIRRDIR "/vendor");
+			#endif
+			continue;
+		}
+	}
+	vec_deep_destroy(&mounts);
+	if (!seperate_vendor) {
+		symlink(MIRRDIR "/system/vendor", MIRRDIR "/vendor");
+		#ifdef MAGISK_DEBUG
+			LOGI("link: %s -> %s\n", MIRRDIR "/system/vendor", MIRRDIR "/vendor");
+		#else
+			LOGI("link: %s\n", MIRRDIR "/vendor");
+		#endif
+	}
+	mkdir_p(MIRRDIR "/bin", 0755);
+	bind_mount(DATABIN, MIRRDIR "/bin");
+}
+
+static void link_busybox() {
+	mkdir_p(BBPATH, 0755);
+	exec_command_sync(MIRRDIR "/bin/busybox", "--install", "-s", BBPATH, NULL);
+	symlink(MIRRDIR "/bin/busybox", BBPATH "/busybox");
+}
+
+static int prepare_img() {
+	if (access(MAINIMG, F_OK) == -1) {
+		if (create_img(MAINIMG, 64))
+			return 1;
+	}
+
+	LOGI("* Mounting " MAINIMG "\n");
+	// Mounting magisk image
+	char *magiskloop = mount_image(MAINIMG, MOUNTPOINT);
+	if (magiskloop == NULL)
+		return 1;
+
+	vec_init(&module_list);
+
+	xmkdir(COREDIR, 0755);
+	xmkdir(COREDIR "/post-fs-data.d", 0755);
+	xmkdir(COREDIR "/service.d", 0755);
+	xmkdir(COREDIR "/props", 0755);
+
+	DIR *dir = xopendir(MOUNTPOINT);
+	struct dirent *entry;
+	while ((entry = xreaddir(dir))) {
+		if (entry->d_type == DT_DIR) {
+			if (strcmp(entry->d_name, ".") == 0 ||
+				strcmp(entry->d_name, "..") == 0 ||
+				strcmp(entry->d_name, ".core") == 0 ||
+				strcmp(entry->d_name, "lost+found") == 0)
+				continue;
+			snprintf(buf, PATH_MAX, "%s/%s/remove", MOUNTPOINT, entry->d_name);
+			if (access(buf, F_OK) == 0) {
+				snprintf(buf, PATH_MAX, "%s/%s", MOUNTPOINT, entry->d_name);
+				exec_command_sync(BBPATH "/rm", "-rf", buf, NULL);
+				continue;
+			}
+			snprintf(buf, PATH_MAX, "%s/%s/disable", MOUNTPOINT, entry->d_name);
+			if (access(buf, F_OK) == 0)
+				continue;
+			vec_push_back(&module_list, strdup(entry->d_name));
+		}
+	}
+
+	closedir(dir);
+
+	// Trim image
+	umount_image(MOUNTPOINT, magiskloop);
+	free(magiskloop);
+	trim_img(MAINIMG);
+
+	// Remount them back :)
+	magiskloop = mount_image(MAINIMG, MOUNTPOINT);
+	free(magiskloop);
+
+	return 0;
+}
+
+/****************
+ * Entry points *
+ ****************/
+
+static void *start_magisk_hide(void *args) {
+	launch_magiskhide(-1);
+	return NULL;
+}
+
+static void unblock_boot_process() {
+	close(open(UNBLOCKFILE, O_RDONLY | O_CREAT));
+	pthread_exit(NULL);
+}
+
+void post_fs(int client) {
+	// Error handler
+	err_handler = unblock_boot_process;
+
+	LOGI("** post-fs mode running\n");
+	// ack
+	write_int(client, 0);
+	close(client);
+
+	// Uninstall or core only mode
+	if (access(UNINSTALLER, F_OK) == 0 || access(DISABLEFILE, F_OK) == 0)
+		goto unblock;
+
+	// Allocate buffer
+	buf = xmalloc(PATH_MAX);
+	buf2 = xmalloc(PATH_MAX);
+
+	simple_mount("/system");
+	simple_mount("/vendor");
+
+unblock:
+	unblock_boot_process();
+}
+
+void post_fs_data(int client) {
+	// Error handler
+	err_handler = unblock_boot_process;
+
+	// ack
+	write_int(client, 0);
+	close(client);
+	if (!check_data())
+		goto unblock;
+
+	// Start log monitor
+	monitor_logs();
+
+#ifdef MAGISK_DEBUG
+	// Log everything initially
+	debug_log_fd = xopen(DEBUG_LOG, O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, 0644);
+	xwrite(debug_log_fd, "Boot logs:\n", 11);
+	debug_log_pid = exec_command(0, &debug_log_fd, NULL, "logcat", "-v", "thread", NULL);
+#endif
+
+	LOGI("** post-fs-data mode running\n");
+
+	// Allocate buffer
+	if (buf == NULL) buf = xmalloc(PATH_MAX);
+	if (buf2 == NULL) buf2 = xmalloc(PATH_MAX);
+
+	// Magisk binaries
+	char *bin_path = NULL;
+	if (access("/cache/data_bin", F_OK) == 0)
+		bin_path = "/cache/data_bin";
+	else if (access("/data/data/com.topjohnwu.magisk/install", F_OK) == 0)
+		bin_path = "/data/data/com.topjohnwu.magisk/install";
+	else if (access("/data/user_de/0/com.topjohnwu.magisk/install", F_OK) == 0)
+		bin_path = "/data/user_de/0/com.topjohnwu.magisk/install";
+	if (bin_path) {
+		exec_command_sync("rm", "-rf", DATABIN, NULL);
+		exec_command_sync("cp", "-r", bin_path, DATABIN, NULL);
+		exec_command_sync("rm", "-rf", bin_path, NULL);
+		exec_command_sync("chmod", "-R", "755", bin_path, NULL);
+		// Lazy.... use shell blob to match files
+		exec_command_sync("sh", "-c", "mv /data/magisk/stock_boot* /data", NULL);
+	}
+
+	// Link busybox
+	mount_mirrors();
+	link_busybox();
+
+	// Merge images
+	if (merge_img("/data/magisk_merge.img", MAINIMG)) {
+		LOGE("Image merge %s -> %s failed!\n", "/data/magisk_merge.img", MAINIMG);
+		goto unblock;
+	}
+
+	// uninstaller
+	if (access(UNINSTALLER, F_OK) == 0) {
+		close(open(UNBLOCKFILE, O_RDONLY | O_CREAT));
+		setenv("BOOTMODE", "true", 1);
+		exec_command(0, NULL, bb_setenv, "sh", UNINSTALLER, NULL);
+		return;
+	}
+
+	// Trim, mount magisk.img, which will also travel through the modules
+	// After this, it will create the module list
+	if (prepare_img())
+		goto core_only; // Mounting fails, we can only do core only stuffs
+
+	// Run common scripts
+	LOGI("* Running post-fs-data.d scripts\n");
+	exec_common_script("post-fs-data");
+
+	// Core only mode
+	if (access(DISABLEFILE, F_OK) == 0)
+		goto core_only;
+
+	// Execute module scripts
+	LOGI("* Running module post-fs-data scripts\n");
+	exec_module_script("post-fs-data");
+
+	char *module;
+	struct node_entry *sys_root, *ven_root = NULL, *child;
+
+	// Create the system root entry
+	sys_root = xcalloc(sizeof(*sys_root), 1);
+	sys_root->name = strdup("system");
+	sys_root->status = IS_INTER;
+
+	int has_modules = 0;
+
+	LOGI("* Loading modules\n");
+	vec_for_each(&module_list, module) {
+		// Read props
+		snprintf(buf, PATH_MAX, "%s/%s/system.prop", MOUNTPOINT, module);
+		if (access(buf, F_OK) == 0) {
+			LOGI("%s: loading [system.prop]\n", module);
+			read_prop_file(buf, 0);
+		}
+		// Check whether enable auto_mount
+		snprintf(buf, PATH_MAX, "%s/%s/auto_mount", MOUNTPOINT, module);
+		if (access(buf, F_OK) == -1)
+			continue;
+		// Double check whether the system folder exists
+		snprintf(buf, PATH_MAX, "%s/%s/system", MOUNTPOINT, module);
+		if (access(buf, F_OK) == -1)
+			continue;
+
+		// Construct structure
+		has_modules = 1;
+		LOGI("%s: constructing magic mount structure\n", module);
+		// If /system/vendor exists in module, create a link outside
+		snprintf(buf, PATH_MAX, "%s/%s/system/vendor", MOUNTPOINT, module);
+		if (access(buf, F_OK) == 0) {
+			snprintf(buf2, PATH_MAX, "%s/%s/vendor", MOUNTPOINT, module);
+			unlink(buf2);
+			symlink(buf, buf2);
+		}
+		construct_tree(module, sys_root);
+	}
+
+	if (has_modules) {
+		// Extract the vendor node out of system tree and swap with placeholder
+		vec_for_each(sys_root->children, child) {
+			if (strcmp(child->name, "vendor") == 0) {
+				ven_root = child;
+				child = xcalloc(sizeof(*child), 1);
+				child->type = seperate_vendor ? DT_LNK : DT_DIR;
+				child->parent = ven_root->parent;
+				child->name = strdup("vendor");
+				child->status = 0;
+				// Swap!
+				vec_cur(sys_root->children) = child;
+				ven_root->parent = NULL;
+				break;
+			}
+		}
+
+		// Magic!!
+		magic_mount(sys_root);
+		if (ven_root) magic_mount(ven_root);
+	}
+
+	// Cleanup memory
+	destroy_subtree(sys_root);
+	if (ven_root) destroy_subtree(ven_root);
+
+core_only:
+	// Systemless hosts
+	if (access(HOSTSFILE, F_OK) == 0) {
+		LOGI("* Enabling systemless hosts file support");
+		bind_mount(HOSTSFILE, "/system/etc/hosts");
+	}
+
+	// Enable magiskhide by default, only disable when set explicitly
+	char *hide_prop = getprop(MAGISKHIDE_PROP);
+	if (hide_prop == NULL || strcmp(hide_prop, "0") != 0) {
+		pthread_t thread;
+		xpthread_create(&thread, NULL, start_magisk_hide, NULL);
+		pthread_detach(thread);
+	}
+	free(hide_prop);
+
+unblock:
+	unblock_boot_process();
+}
+
+void late_start(int client) {
+	LOGI("** late_start service mode running\n");
+	// ack
+	write_int(client, 0);
+	close(client);
+
+	// Allocate buffer
+	if (buf == NULL) buf = xmalloc(PATH_MAX);
+	if (buf2 == NULL) buf2 = xmalloc(PATH_MAX);
+
+	// Wait till the full patch is done
+	pthread_join(sepol_patch, NULL);
+
+	// Run scripts after full patch, most reliable way to run scripts
+	LOGI("* Running service.d scripts\n");
+	exec_common_script("service");
+
+	// Core only mode
+	if (access(DISABLEFILE, F_OK) == 0)
+		goto core_only;
+
+	LOGI("* Running module service scripts\n");
+	exec_module_script("service");
+
+core_only:
+	// Install Magisk Manager if exists
+	if (access(MANAGERAPK, F_OK) == 0) {
+		while (1) {
+			sleep(5);
+			int apk_res = -1, pid;
+			pid = exec_command(1, &apk_res, pm_setenv,
+				"app_process",
+				"/system/bin", "com.android.commands.pm.Pm",
+				"install", "-r", MANAGERAPK, NULL);
+			if (pid != -1) {
+				waitpid(pid, NULL, 0);
+				fdgets(buf, PATH_MAX, apk_res);
+				close(apk_res);
+				// Keep trying until pm is started
+				if (strstr(buf, "Error:") == NULL)
+					break;
+			}
+		}
+		unlink(MANAGERAPK);
+	}
+
+	// All boot stage done, cleanup everything
+	free(buf);
+	free(buf2);
+	buf = buf2 = NULL;
+	vec_deep_destroy(&module_list);
+
+#ifdef MAGISK_DEBUG
+	// Stop recording the boot logcat after every boot task is done
+	kill(debug_log_pid, SIGTERM);
+	waitpid(debug_log_pid, NULL, 0);
+	// Then start to log Magisk verbosely
+	xwrite(debug_log_fd, "\nVerbose logs:\n", 15);
+	debug_log_pid = exec_command(0, &debug_log_fd, NULL, "logcat", "-v", "thread", "-s", "Magisk", NULL);
+#endif
+}

jni/daemon/daemon.c

@@ -0,0 +1,203 @@
+/* daemon.c - Magisk Daemon
+ *
+ * Start the daemon and wait for requests
+ * Connect the daemon and send requests through sockets
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <pthread.h>
+#include <sys/un.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+#include <selinux/selinux.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "daemon.h"
+#include "magiskpolicy.h"
+
+pthread_t sepol_patch;
+
+static void *request_handler(void *args) {
+	// Setup the default error handler for threads
+	err_handler = exit_thread;
+
+	int client = *((int *) args);
+	free(args);
+	client_request req = read_int(client);
+
+	struct ucred credentials;
+	get_client_cred(client, &credentials);
+
+	switch (req) {
+	case LAUNCH_MAGISKHIDE:
+	case STOP_MAGISKHIDE:
+	case ADD_HIDELIST:
+	case RM_HIDELIST:
+	case LS_HIDELIST:
+	case POST_FS:
+	case POST_FS_DATA:
+	case LATE_START:
+		if (credentials.uid != 0) {
+			write_int(client, ROOT_REQUIRED);
+			close(client);
+			return NULL;
+		}
+	default:
+		break;
+	}
+
+	switch (req) {
+	case LAUNCH_MAGISKHIDE:
+		launch_magiskhide(client);
+		break;
+	case STOP_MAGISKHIDE:
+		stop_magiskhide(client);
+		break;
+	case ADD_HIDELIST:
+		add_hide_list(client);
+		break;
+	case RM_HIDELIST:
+		rm_hide_list(client);
+		break;
+	case LS_HIDELIST:
+		ls_hide_list(client);
+		break;
+	case SUPERUSER:
+		su_daemon_receiver(client);
+		break;
+	case CHECK_VERSION:
+		write_string(client, MAGISK_VER_STR);
+		close(client);
+		break;
+	case CHECK_VERSION_CODE:
+		write_int(client, MAGISK_VER_CODE);
+		close(client);
+		break;
+	case POST_FS:
+		post_fs(client);
+		break;
+	case POST_FS_DATA:
+		post_fs_data(client);
+		break;
+	case LATE_START:
+		late_start(client);
+		break;
+	default:
+		break;
+	}
+	return NULL;
+}
+
+/* Setup the address and return socket fd */
+static int setup_socket(struct sockaddr_un *sun) {
+	int fd = xsocket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
+	memset(sun, 0, sizeof(*sun));
+	sun->sun_family = AF_LOCAL;
+	memcpy(sun->sun_path, REQUESTOR_DAEMON_PATH, sizeof(REQUESTOR_DAEMON_PATH) - 1);
+	return fd;
+}
+
+static void *large_sepol_patch(void *args) {
+	LOGD("sepol: Starting large patch thread\n");
+	// Patch su to everything
+	sepol_allow("su", ALL, ALL, ALL);
+	dump_policydb(SELINUX_LOAD);
+	LOGD("sepol: Large patch done\n");
+	destroy_policydb();
+	return NULL;
+}
+
+void start_daemon(int client) {
+	// Launch the daemon, create new session, set proper context
+	if (getuid() != UID_ROOT || getgid() != UID_ROOT) {
+		fprintf(stderr, "Starting daemon requires root: %s\n", strerror(errno));
+		PLOGE("start daemon");
+	}
+
+	switch (fork()) {
+	case -1:
+		PLOGE("fork");
+	case 0:
+		break;
+	default:
+		return;
+	}
+
+	// First close the client, it's useless for us
+	close(client);
+	xsetsid();
+	setcon("u:r:su:s0");
+	umask(0);
+	int fd = xopen("/dev/null", O_RDWR | O_CLOEXEC);
+	xdup2(fd, STDIN_FILENO);
+	xdup2(fd, STDOUT_FILENO);
+	xdup2(fd, STDERR_FILENO);
+	close(fd);
+
+	// Patch selinux with medium patch before we do anything
+	load_policydb(SELINUX_POLICY);
+	sepol_med_rules();
+	dump_policydb(SELINUX_LOAD);
+
+	// Continue the larger patch in another thread, we will join later
+	pthread_create(&sepol_patch, NULL, large_sepol_patch, NULL);
+
+	struct sockaddr_un sun;
+	fd = setup_socket(&sun);
+
+	xbind(fd, (struct sockaddr*) &sun, sizeof(sun));
+	xlisten(fd, 10);
+
+	// Change process name
+	strcpy(argv0, "magisk_daemon");
+	// The root daemon should not do anything if an error occurs
+	// It should stay intact under any circumstances
+	err_handler = do_nothing;
+
+	LOGI("Magisk v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") daemon started\n");
+
+	// Unlock all blocks for rw
+	unlock_blocks();
+
+	// Setup links under /sbin
+	xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
+	create_links(NULL, "/sbin");
+	xchmod("/sbin", 0755);
+	xmkdir("/magisk", 0755);
+	xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
+
+	// Loop forever to listen for requests
+	while(1) {
+		int *client = xmalloc(sizeof(int));
+		*client = xaccept4(fd, NULL, NULL, SOCK_CLOEXEC);
+		pthread_t thread;
+		xpthread_create(&thread, NULL, request_handler, client);
+		// Detach the thread, we will never join it
+		pthread_detach(thread);
+	}
+}
+
+/* Connect the daemon, and return a socketfd */
+int connect_daemon() {
+	struct sockaddr_un sun;
+	int fd = setup_socket(&sun);
+	if (connect(fd, (struct sockaddr*) &sun, sizeof(sun))) {
+		/* If we cannot access the daemon, we start the daemon
+		 * since there is no clear entry point when the daemon should be started
+		 */
+		LOGD("client: connect fail, try launching new daemon process\n");
+		start_daemon(fd);
+		do {
+			// Wait for 10ms
+			usleep(10);
+		} while (connect(fd, (struct sockaddr*) &sun, sizeof(sun)));
+	}
+	return fd;
+}

jni/daemon/log_monitor.c

@@ -0,0 +1,45 @@
+/* log_monitor.c - New thread to monitor logcat
+ *
+ * Open a new thread to call logcat and get logs with tag "Magisk"
+ * Also, write the logs to a log file for debugging purpose
+ *
+ */
+
+#include <stdio.h>
+#include <limits.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "daemon.h"
+
+static void *logger_thread(void *args) {
+	// Setup error handler
+	err_handler = exit_thread;
+
+	rename(LOGFILE, LASTLOG);
+	int log_fd, log_pid;
+
+	log_fd = xopen(LOGFILE, O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, 0644);
+
+	while (1) {
+		// Start logcat
+		log_pid = exec_command(0, &log_fd, NULL, "logcat", "-v", "thread", "Magisk:I", "*:S", NULL);
+		if (log_pid > 0)
+			waitpid(log_pid, NULL, 0);
+		// For some reason it went here, clear buffer and restart
+		exec_command_sync("logcat", "-c", NULL);
+	}
+
+	// Should never be here, but well...
+	return NULL;
+}
+
+/* Start a new thread to monitor logcat and dump to logfile */
+void monitor_logs() {
+	pthread_t thread;
+	xpthread_create(&thread, NULL, logger_thread, NULL);
+	pthread_detach(thread);
+}

jni/daemon/magisk.c

@@ -0,0 +1,177 @@
+/* main.c - The multicall entry point
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "utils.h"
+#include "magisk.h"
+#include "daemon.h"
+
+char *argv0;
+
+char *applet[] =
+	{ "su", "resetprop", "magiskpolicy", "supolicy", "magiskhide", NULL };
+
+int (*applet_main[]) (int, char *[]) =
+	{ su_client_main, resetprop_main, magiskpolicy_main, magiskpolicy_main, magiskhide_main, NULL };
+
+int create_links(const char *bin, const char *path) {
+	char self[PATH_MAX], linkpath[PATH_MAX];
+	if (bin == NULL) {
+		xreadlink("/proc/self/exe", self, sizeof(self));
+		bin = self;
+	}
+	int ret = 0;
+	for (int i = 0; applet[i]; ++i) {
+		snprintf(linkpath, sizeof(linkpath), "%s/%s", path, applet[i]);
+		unlink(linkpath);
+		ret |= symlink(bin, linkpath);
+	}
+	return ret;
+}
+
+// Global error hander function
+// Should be changed each thread/process
+__thread void (*err_handler)(void);
+
+static void usage() {
+	fprintf(stderr,
+		"Magisk v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu) multi-call binary\n"
+		"\n"
+		"Usage: %s [applet [arguments]...]\n"
+		"   or: %s [options]...\n"
+		"\n"
+		"Options:\n"
+		"   -c                        print current binary version\n"
+		"   -v                        print running daemon version\n"
+		"   -V                        print running daemon version code\n"
+		"   --list                    list all availible applets\n"
+        "   --install [SOURCE] DIR    symlink all applets to DIR. SOURCE is optional\n"
+		"   --createimg IMG SIZE      create ext4 image. SIZE is interpreted in MB\n"
+		"   --imgsize IMG             report ext4 image used/total size\n"
+		"   --resizeimg IMG SIZE      resize ext4 image. SIZE is interpreted in MB\n"
+		"   --mountimg IMG PATH       mount IMG to PATH and prints the loop device\n"
+		"   --umountimg PATH LOOP     unmount PATH and delete LOOP device\n"
+		"   --[boot stage]            start boot stage service\n"
+		"   --unlock-blocks           set BLKROSET flag to OFF for all block devices\n"
+		"\n"
+		"Supported boot stages:\n"
+		"   post-fs, post-fs-data, service\n"
+		"\n"
+		"Supported applets:\n"
+	, argv0, argv0);
+
+	for (int i = 0; applet[i]; ++i)
+		fprintf(stderr, i ? ", %s" : "    %s", applet[i]);
+	fprintf(stderr, "\n\n");
+	exit(1);
+}
+
+int main(int argc, char *argv[]) {
+	argv0 = argv[0];
+	// Exit the whole app if error occurs by default
+	err_handler = exit_proc;
+	char * arg = strrchr(argv[0], '/');
+	if (arg) ++arg;
+	else arg = argv[0];
+	if (strcmp(arg, "magisk") == 0) {
+		if (argc < 2) usage();
+		if (strcmp(argv[1], "-c") == 0) {
+			printf("%s\n", MAGISK_VER_STR);
+			return 0;
+		} else if (strcmp(argv[1], "-v") == 0) {
+			int fd = connect_daemon();
+			write_int(fd, CHECK_VERSION);
+			char *v = read_string(fd);
+			printf("%s\n", v);
+			free(v);
+			return 0;
+		} else if (strcmp(argv[1], "-V") == 0) {
+			int fd = connect_daemon();
+			write_int(fd, CHECK_VERSION_CODE);
+			printf("%d\n", read_int(fd));
+			return 0;
+		} else if (strcmp(argv[1], "--install") == 0) {
+			if (argc < 3) usage();
+			if (argc == 3) return create_links(NULL, argv[2]);
+			else return create_links(argv[2], argv[3]);
+		} else if (strcmp(argv[1], "--list") == 0) {
+			for (int i = 0; applet[i]; ++i)
+				printf("%s\n", applet[i]);
+			return 0;
+		} else if (strcmp(argv[1], "--createimg") == 0) {
+			if (argc < 4) usage();
+			int size;
+			sscanf(argv[3], "%d", &size);
+			return create_img(argv[2], size);
+		} else if (strcmp(argv[1], "--imgsize") == 0) {
+			if (argc < 3) usage();
+			int used, total;
+			if (get_img_size(argv[2], &used, &total)) {
+				fprintf(stderr, "Cannot check %s size\n", argv[2]);
+				return 1;
+			}
+			printf("%d %d\n", used, total);
+			return 0;
+		} else if (strcmp(argv[1], "--resizeimg") == 0) {
+			if (argc < 4) usage();
+			int used, total, size;
+			sscanf(argv[3], "%d", &size);
+			if (get_img_size(argv[2], &used, &total)) {
+				fprintf(stderr, "Cannot check %s size\n", argv[2]);
+				return 1;
+			}
+			if (size <= used) {
+				fprintf(stderr, "Cannot resize smaller than %dM\n", used);
+				return 1;
+			}
+			return resize_img(argv[2], size);
+		} else if (strcmp(argv[1], "--mountimg") == 0) {
+			if (argc < 4) usage();
+			char *loop = mount_image(argv[2], argv[3]);
+			if (loop == NULL) {
+				fprintf(stderr, "Cannot mount image!\n");
+				return 1;
+			} else {
+				printf("%s\n", loop);
+				free(loop);
+				return 0;
+			}
+		} else if (strcmp(argv[1], "--umountimg") == 0) {
+			if (argc < 4) usage();
+			umount_image(argv[2], argv[3]);
+			return 0;
+		} else if (strcmp(argv[1], "--unlock-blocks") == 0) {
+			unlock_blocks();
+			return 0;
+		} else if (strcmp(argv[1], "--post-fs") == 0) {
+			int fd = connect_daemon();
+			write_int(fd, POST_FS);
+			return read_int(fd);
+		} else if (strcmp(argv[1], "--post-fs-data") == 0) {
+			int fd = connect_daemon();
+			write_int(fd, POST_FS_DATA);
+			return read_int(fd);
+		} else if (strcmp(argv[1], "--service") == 0) {
+			int fd = connect_daemon();
+			write_int(fd, LATE_START);
+			return read_int(fd);
+		} else {
+			// It's calling applets
+			--argc;
+			++argv;
+			arg = argv[0];
+		}
+	}
+
+	// Applets
+	for (int i = 0; applet[i]; ++i) {
+		if (strcmp(arg, applet[i]) == 0)
+			return (*applet_main[i])(argc, argv);
+	}
+
+	fprintf(stderr, "%s: applet not found\n", arg);
+	return 1;
+}

jni/daemon/socket_trans.c

@@ -0,0 +1,148 @@
+/* socket_trans.c - Functions to transfer data through socket
+ */
+
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "daemon.h"
+
+/*
+ * Receive a file descriptor from a Unix socket.
+ * Contributed by @mkasick
+ *
+ * Returns the file descriptor on success, or -1 if a file
+ * descriptor was not actually included in the message
+ *
+ * On error the function terminates by calling exit(-1)
+ */
+int recv_fd(int sockfd) {
+    // Need to receive data from the message, otherwise don't care about it.
+    char iovbuf;
+
+    struct iovec iov = {
+        .iov_base = &iovbuf,
+        .iov_len  = 1,
+    };
+
+    char cmsgbuf[CMSG_SPACE(sizeof(int))];
+
+    struct msghdr msg = {
+        .msg_iov        = &iov,
+        .msg_iovlen     = 1,
+        .msg_control    = cmsgbuf,
+        .msg_controllen = sizeof(cmsgbuf),
+    };
+
+    xrecvmsg(sockfd, &msg, MSG_WAITALL);
+
+    // Was a control message actually sent?
+    switch (msg.msg_controllen) {
+    case 0:
+        // No, so the file descriptor was closed and won't be used.
+        return -1;
+    case sizeof(cmsgbuf):
+        // Yes, grab the file descriptor from it.
+        break;
+    default:
+        goto error;
+    }
+
+    struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+
+    if (cmsg             == NULL                  ||
+        cmsg->cmsg_len   != CMSG_LEN(sizeof(int)) ||
+        cmsg->cmsg_level != SOL_SOCKET            ||
+        cmsg->cmsg_type  != SCM_RIGHTS) {
+error:
+        LOGE("unable to read fd");
+        exit(-1);
+    }
+
+    return *(int *)CMSG_DATA(cmsg);
+}
+
+/*
+ * Send a file descriptor through a Unix socket.
+ * Contributed by @mkasick
+ *
+ * On error the function terminates by calling exit(-1)
+ *
+ * fd may be -1, in which case the dummy data is sent,
+ * but no control message with the FD is sent.
+ */
+void send_fd(int sockfd, int fd) {
+    // Need to send some data in the message, this will do.
+    struct iovec iov = {
+        .iov_base = "",
+        .iov_len  = 1,
+    };
+
+    struct msghdr msg = {
+        .msg_iov        = &iov,
+        .msg_iovlen     = 1,
+    };
+
+    char cmsgbuf[CMSG_SPACE(sizeof(int))];
+
+    if (fd != -1) {
+        // Is the file descriptor actually open?
+        if (fcntl(fd, F_GETFD) == -1) {
+            if (errno != EBADF) {
+                PLOGE("unable to send fd");
+            }
+            // It's closed, don't send a control message or sendmsg will EBADF.
+        } else {
+            // It's open, send the file descriptor in a control message.
+            msg.msg_control    = cmsgbuf;
+            msg.msg_controllen = sizeof(cmsgbuf);
+
+            struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+
+            cmsg->cmsg_len   = CMSG_LEN(sizeof(int));
+            cmsg->cmsg_level = SOL_SOCKET;
+            cmsg->cmsg_type  = SCM_RIGHTS;
+
+            *(int *)CMSG_DATA(cmsg) = fd;
+        }
+    }
+
+    xsendmsg(sockfd, &msg, 0);
+}
+
+int read_int(int fd) {
+    int val;
+    xxread(fd, &val, sizeof(int));
+    return val;
+}
+
+void write_int(int fd, int val) {
+    if (fd < 0) return;
+    xwrite(fd, &val, sizeof(int));
+}
+
+char* read_string(int fd) {
+    int len = read_int(fd);
+    if (len > PATH_MAX || len < 0) {
+        LOGE("invalid string length %d", len);
+        exit(1);
+    }
+    char* val = xmalloc(sizeof(char) * (len + 1));
+    xxread(fd, val, len);
+    val[len] = '\0';
+    return val;
+}
+
+void write_string(int fd, const char* val) {
+    if (fd < 0) return;
+    int len = strlen(val);
+    write_int(fd, len);
+    xwrite(fd, val, len);
+}

jni/external/Android.mk

@@ -0,0 +1,40 @@
+LOCAL_PATH:= $(call my-dir)
+EXTERNAL := $(LOCAL_PATH)
+
+# libsqlite.so (stub)
+include $(CLEAR_VARS)
+LOCAL_MODULE:= libsqlite
+LOCAL_SRC_FILES := stubs/sqlite3_stub.c
+include $(BUILD_SHARED_LIBRARY)
+
+# libselinux.so (stub)
+include $(CLEAR_VARS)
+LOCAL_MODULE:= libselinux
+LOCAL_C_INCLUDES := $(LIBSELINUX)
+LOCAL_SRC_FILES := stubs/selinux_stub.c
+include $(BUILD_SHARED_LIBRARY)
+
+# libfdt
+include $(CLEAR_VARS)
+LOCAL_MODULE:= libfdt
+LOCAL_C_INCLUDES := $(LIBFDT)
+LOCAL_SRC_FILES := \
+	dtc/libfdt/fdt.c \
+	dtc/libfdt/fdt_addresses.c \
+	dtc/libfdt/fdt_empty_tree.c \
+	dtc/libfdt/fdt_overlay.c \
+	dtc/libfdt/fdt_ro.c \
+	dtc/libfdt/fdt_rw.c \
+	dtc/libfdt/fdt_strerror.c \
+	dtc/libfdt/fdt_sw.c \
+	dtc/libfdt/fdt_wip.c
+include $(BUILD_STATIC_LIBRARY)
+
+# libsepol, static library
+include $(SELINUX_PATH)/libsepol/Android.mk
+
+# Compression libraries for magiskboot
+include $(COMPRESS_LIB)/zlib/Android.mk
+include $(COMPRESS_LIB)/xz/src/liblzma/Android.mk
+include $(COMPRESS_LIB)/lz4/lib/Android.mk
+include $(COMPRESS_LIB)/bzip2/Android.mk

jni/external/stubs/selinux_stub.c

@@ -0,0 +1,356 @@
+#include <stdbool.h>
+#include <selinux/avc.h>
+#include <selinux/context.h>
+#include <selinux/get_context_list.h>
+#include <selinux/get_default_type.h>
+#include <selinux/label.h>
+#include <selinux/restorecon.h>
+#include <selinux/selinux.h>
+int is_selinux_enabled(void) { return 0; }
+int is_selinux_mls_enabled(void) { return 0; }
+void freecon(char * con) { }
+void freeconary(char ** con) { }
+int getcon(char ** con) { return 0; }
+int getcon_raw(char ** con) { return 0; }
+int setcon(const char * con) { return 0; }
+int setcon_raw(const char * con) { return 0; }
+int getpidcon(pid_t pid, char ** con) { return 0; }
+int getpidcon_raw(pid_t pid, char ** con) { return 0; }
+int getprevcon(char ** con) { return 0; }
+int getprevcon_raw(char ** con) { return 0; }
+int getexeccon(char ** con) { return 0; }
+int getexeccon_raw(char ** con) { return 0; }
+int setexeccon(const char * con) { return 0; }
+int setexeccon_raw(const char * con) { return 0; }
+int getfscreatecon(char ** con) { return 0; }
+int getfscreatecon_raw(char ** con) { return 0; }
+int setfscreatecon(const char * context) { return 0; }
+int setfscreatecon_raw(const char * context) { return 0; }
+int getkeycreatecon(char ** con) { return 0; }
+int getkeycreatecon_raw(char ** con) { return 0; }
+int setkeycreatecon(const char * context) { return 0; }
+int setkeycreatecon_raw(const char * context) { return 0; }
+int getsockcreatecon(char ** con) { return 0; }
+int getsockcreatecon_raw(char ** con) { return 0; }
+int setsockcreatecon(const char * context) { return 0; }
+int setsockcreatecon_raw(const char * context) { return 0; }
+int getfilecon(const char *path, char ** con) { return 0; }
+int getfilecon_raw(const char *path, char ** con) { return 0; }
+int lgetfilecon(const char *path, char ** con) { return 0; }
+int lgetfilecon_raw(const char *path, char ** con) { return 0; }
+int fgetfilecon(int fd, char ** con) { return 0; }
+int fgetfilecon_raw(int fd, char ** con) { return 0; }
+int setfilecon(const char *path, const char * con) { return 0; }
+int setfilecon_raw(const char *path, const char * con) { return 0; }
+int lsetfilecon(const char *path, const char * con) { return 0; }
+int lsetfilecon_raw(const char *path, const char * con) { return 0; }
+int fsetfilecon(int fd, const char * con) { return 0; }
+int fsetfilecon_raw(int fd, const char * con) { return 0; }
+int getpeercon(int fd, char ** con) { return 0; }
+int getpeercon_raw(int fd, char ** con) { return 0; }
+void selinux_set_callback(int type, union selinux_callback cb) { }
+int security_compute_av(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					access_vector_t requested,
+					struct av_decision *avd) { return 0; }
+int security_compute_av_raw(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					access_vector_t requested,
+					struct av_decision *avd) { return 0; }
+int security_compute_av_flags(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					access_vector_t requested,
+					struct av_decision *avd) { return 0; }
+int security_compute_av_flags_raw(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					access_vector_t requested,
+					struct av_decision *avd) { return 0; }
+int security_compute_create(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					char ** newcon) { return 0; }
+int security_compute_create_raw(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					char ** newcon) { return 0; }
+int security_compute_create_name(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					const char *objname,
+					char ** newcon) { return 0; }
+int security_compute_create_name_raw(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					const char *objname,
+					char ** newcon) { return 0; }
+int security_compute_relabel(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					char ** newcon) { return 0; }
+int security_compute_relabel_raw(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					char ** newcon) { return 0; }
+int security_compute_member(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					char ** newcon) { return 0; }
+int security_compute_member_raw(const char * scon,
+					const char * tcon,
+					security_class_t tclass,
+					char ** newcon) { return 0; }
+int security_compute_user(const char * scon,
+				const char *username,
+				char *** con) { return 0; }
+int security_compute_user_raw(const char * scon,
+				const char *username,
+				char *** con) { return 0; }
+int security_load_policy(void *data, size_t len) { return 0; }
+int security_get_initial_context(const char *name,
+					char ** con) { return 0; }
+int security_get_initial_context_raw(const char *name,
+						char ** con) { return 0; }
+int selinux_mkload_policy(int preservebools) { return 0; }
+int selinux_init_load_policy(int *enforce) { return 0; }
+int security_set_boolean_list(size_t boolcnt,
+					SELboolean * boollist, int permanent) { return 0; }
+int security_load_booleans(char *path) { return 0; }
+int security_check_context(const char * con) { return 0; }
+int security_check_context_raw(const char * con) { return 0; }
+int security_canonicalize_context(const char * con,
+					char ** canoncon) { return 0; }
+int security_canonicalize_context_raw(const char * con,
+						char ** canoncon) { return 0; }
+int security_getenforce(void) { return 0; }
+int security_setenforce(int value) { return 0; }
+int security_deny_unknown(void) { return 0; }
+int security_disable(void) { return 0; }
+int security_policyvers(void) { return 0; }
+int security_get_boolean_names(char ***names, int *len) { return 0; }
+int security_get_boolean_pending(const char *name) { return 0; }
+int security_get_boolean_active(const char *name) { return 0; }
+int security_set_boolean(const char *name, int value) { return 0; }
+int security_commit_booleans(void) { return 0; }
+int selinux_set_mapping(struct security_class_mapping *map) { return 0; }
+security_class_t mode_to_security_class(mode_t mode) { return 0; }
+security_class_t string_to_security_class(const char *name) { return 0; }
+const char *security_class_to_string(security_class_t cls) { return 0; }
+const char *security_av_perm_to_string(security_class_t tclass,
+						access_vector_t perm) { return 0; }
+access_vector_t string_to_av_perm(security_class_t tclass,
+					const char *name) { return 0; }
+int security_av_string(security_class_t tclass,
+				access_vector_t av, char **result) { return 0; }
+void print_access_vector(security_class_t tclass, access_vector_t av) { }
+void set_matchpathcon_printf(void (*f) (const char *fmt, ...)) { }
+void set_matchpathcon_invalidcon(int (*f) (const char *path,
+						unsigned lineno,
+						char *context)) { }
+void set_matchpathcon_canoncon(int (*f) (const char *path,
+						unsigned lineno,
+						char **context)) { }
+void set_matchpathcon_flags(unsigned int flags) { }
+int matchpathcon_init(const char *path) { return 0; }
+int matchpathcon_init_prefix(const char *path, const char *prefix) { return 0; }
+void matchpathcon_fini(void) { }
+int realpath_not_final(const char *name, char *resolved_path) { return 0; }
+int matchpathcon(const char *path,
+			mode_t mode, char ** con) { return 0; }
+int matchpathcon_index(const char *path,
+				  mode_t mode, char ** con) { return 0; }
+int matchpathcon_filespec_add(ino_t ino, int specind, const char *file) { return 0; }
+void matchpathcon_filespec_destroy(void) { }
+void matchpathcon_filespec_eval(void) { }
+void matchpathcon_checkmatches(char *str) { }
+int matchmediacon(const char *media, char ** con) { return 0; }
+int selinux_getenforcemode(int *enforce) { return 0; }
+char *selinux_boolean_sub(const char *boolean_name) { return 0; }
+int selinux_getpolicytype(char **policytype) { return 0; }
+const char *selinux_policy_root(void) { return 0; }
+int selinux_set_policy_root(const char *rootpath) { return 0; }
+const char *selinux_current_policy_path(void) { return 0; }
+const char *selinux_binary_policy_path(void) { return 0; }
+const char *selinux_failsafe_context_path(void) { return 0; }
+const char *selinux_removable_context_path(void) { return 0; }
+const char *selinux_default_context_path(void) { return 0; }
+const char *selinux_user_contexts_path(void) { return 0; }
+const char *selinux_file_context_path(void) { return 0; }
+const char *selinux_file_context_homedir_path(void) { return 0; }
+const char *selinux_file_context_local_path(void) { return 0; }
+const char *selinux_file_context_subs_path(void) { return 0; }
+const char *selinux_file_context_subs_dist_path(void) { return 0; }
+const char *selinux_homedir_context_path(void) { return 0; }
+const char *selinux_media_context_path(void) { return 0; }
+const char *selinux_virtual_domain_context_path(void) { return 0; }
+const char *selinux_virtual_image_context_path(void) { return 0; }
+const char *selinux_lxc_contexts_path(void) { return 0; }
+const char *selinux_x_context_path(void) { return 0; }
+const char *selinux_sepgsql_context_path(void) { return 0; }
+const char *selinux_openrc_contexts_path(void) { return 0; }
+const char *selinux_openssh_contexts_path(void) { return 0; }
+const char *selinux_snapperd_contexts_path(void) { return 0; }
+const char *selinux_systemd_contexts_path(void) { return 0; }
+const char *selinux_contexts_path(void) { return 0; }
+const char *selinux_securetty_types_path(void) { return 0; }
+const char *selinux_booleans_subs_path(void) { return 0; }
+const char *selinux_booleans_path(void) { return 0; }
+const char *selinux_customizable_types_path(void) { return 0; }
+const char *selinux_users_path(void) { return 0; }
+const char *selinux_usersconf_path(void) { return 0; }
+const char *selinux_translations_path(void) { return 0; }
+const char *selinux_colors_path(void) { return 0; }
+const char *selinux_netfilter_context_path(void) { return 0; }
+const char *selinux_path(void) { return 0; }
+int selinux_check_access(const char * scon, const char * tcon, const char *tclass, const char *perm, void *auditdata) { return 0; }
+int selinux_check_passwd_access(access_vector_t requested) { return 0; }
+int checkPasswdAccess(access_vector_t requested) { return 0; }
+int selinux_check_securetty_context(const char * tty_context) { return 0; }
+void set_selinuxmnt(const char *mnt) { }
+int selinuxfs_exists(void) { return 0; }
+void fini_selinuxmnt(void) {}
+int setexecfilecon(const char *filename, const char *fallback_type) { return 0; }
+#ifndef DISABLE_RPM
+int rpm_execcon(unsigned int verified,
+			const char *filename,
+			char *const argv[], char *const envp[]) { return 0; }
+#endif
+int is_context_customizable(const char * scontext) { return 0; }
+int selinux_trans_to_raw_context(const char * trans,
+					char ** rawp) { return 0; }
+int selinux_raw_to_trans_context(const char * raw,
+					char ** transp) { return 0; }
+int selinux_raw_context_to_color(const char * raw,
+					char **color_str) { return 0; }
+int getseuserbyname(const char *linuxuser, char **seuser, char **level) { return 0; }
+int getseuser(const char *username, const char *service,
+			char **r_seuser, char **r_level) { return 0; }
+int selinux_file_context_cmp(const char * a,
+				const char * b) { return 0; }
+int selinux_file_context_verify(const char *path, mode_t mode) { return 0; }
+int selinux_lsetfilecon_default(const char *path) { return 0; }
+void selinux_reset_config(void) { }
+int avc_sid_to_context(security_id_t sid, char ** ctx) { return 0; }
+int avc_sid_to_context_raw(security_id_t sid, char ** ctx) { return 0; }
+int avc_context_to_sid(const char * ctx, security_id_t * sid) { return 0; }
+int avc_context_to_sid_raw(const char * ctx, security_id_t * sid) { return 0; }
+int sidget(security_id_t sid) { return 0; }
+int sidput(security_id_t sid) { return 0; }
+int avc_get_initial_sid(const char *name, security_id_t * sid) { return 0; }
+int avc_init(const char *msgprefix,
+		const struct avc_memory_callback *mem_callbacks,
+		const struct avc_log_callback *log_callbacks,
+		const struct avc_thread_callback *thread_callbacks,
+		const struct avc_lock_callback *lock_callbacks) { return 0; }
+int avc_open(struct selinux_opt *opts, unsigned nopts) { return 0; }
+void avc_cleanup(void) { }
+int avc_reset(void) { return 0; }
+void avc_destroy(void) { }
+int avc_has_perm_noaudit(security_id_t ssid,
+			security_id_t tsid,
+			security_class_t tclass,
+			access_vector_t requested,
+			struct avc_entry_ref *aeref, struct av_decision *avd) { return 0; }
+int avc_has_perm(security_id_t ssid, security_id_t tsid,
+			security_class_t tclass, access_vector_t requested,
+			struct avc_entry_ref *aeref, void *auditdata) { return 0; }
+void avc_audit(security_id_t ssid, security_id_t tsid,
+			security_class_t tclass, access_vector_t requested,
+			struct av_decision *avd, int result, void *auditdata) { }
+int avc_compute_create(security_id_t ssid,
+			security_id_t tsid,
+			security_class_t tclass, security_id_t * newsid) { return 0; }
+int avc_compute_member(security_id_t ssid,
+			security_id_t tsid,
+			security_class_t tclass, security_id_t * newsid) { return 0; }
+int avc_add_callback(int (*callback)
+			(uint32_t event, security_id_t ssid,
+			security_id_t tsid, security_class_t tclass,
+			access_vector_t perms,
+			access_vector_t * out_retained),
+			uint32_t events, security_id_t ssid,
+			security_id_t tsid, security_class_t tclass,
+			access_vector_t perms) { return 0; }
+void avc_cache_stats(struct avc_cache_stats *stats) { }
+void avc_av_stats(void) { }
+void avc_sid_stats(void) { }
+int avc_netlink_open(int blocking) { return 0; }
+void avc_netlink_loop(void) { }
+void avc_netlink_close(void) { }
+int avc_netlink_acquire_fd(void) { return 0; }
+void avc_netlink_release_fd(void) { }
+int avc_netlink_check_nb(void) { return 0; }
+int selinux_status_open(int fallback) { return 0; }
+void selinux_status_close(void) { }
+int selinux_status_updated(void) { return 0; }
+int selinux_status_getenforce(void) { return 0; }
+int selinux_status_policyload(void) { return 0; }
+int selinux_status_deny_unknown(void) { return 0; }
+context_t context_new(const char *s) { return 0; }
+char *context_str(context_t c) { return 0; }
+void context_free(context_t c) { }
+const char *context_type_get(context_t c) { return 0; }
+const char *context_range_get(context_t c) { return 0; }
+const char *context_role_get(context_t c) { return 0; }
+const char *context_user_get(context_t c) { return 0; }
+int context_type_set(context_t c, const char *s) { return 0; }
+int context_range_set(context_t c, const char *s) { return 0; }
+int context_role_set(context_t c, const char *s) { return 0; }
+int context_user_set(context_t c, const char *s) { return 0; }
+int get_ordered_context_list(const char *user,
+					char * fromcon,
+					char *** list) { return 0; }
+int get_ordered_context_list_with_level(const char *user,
+					const char *level,
+					char * fromcon,
+					char *** list) { return 0; }
+int get_default_context(const char *user,
+					char * fromcon,
+					char ** newcon) { return 0; }
+int get_default_context_with_level(const char *user,
+					const char *level,
+					char * fromcon,
+					char ** newcon) { return 0; }
+int get_default_context_with_role(const char *user,
+					const char *role,
+					char * fromcon,
+					char ** newcon) { return 0; }
+int get_default_context_with_rolelevel(const char *user,
+					const char *role,
+					const char *level,
+					char * fromcon,
+					char ** newcon) { return 0; }
+int query_user_context(char ** list,
+				  char ** newcon) { return 0; }
+int manual_user_enter_context(const char *user,
+					char ** newcon) { return 0; }
+const char *selinux_default_type_path(void) { return 0; }
+int get_default_type(const char *role, char **type) { return 0; }
+struct selabel_handle *selabel_open(unsigned int backend,
+					const struct selinux_opt *opts,
+					unsigned nopts) { return 0; }
+void selabel_close(struct selabel_handle *handle) { }
+int selabel_lookup(struct selabel_handle *handle, char **con,
+			const char *key, int type) { return 0; }
+int selabel_lookup_raw(struct selabel_handle *handle, char **con,
+			const char *key, int type) { return 0; }
+bool selabel_partial_match(struct selabel_handle *handle, const char *key) { return 0; }
+int selabel_lookup_best_match(struct selabel_handle *rec, char **con,
+				const char *key, const char **aliases, int type) { return 0; }
+int selabel_lookup_best_match_raw(struct selabel_handle *rec, char **con,
+				const char *key, const char **aliases, int type) { return 0; }
+int selabel_digest(struct selabel_handle *rec,
+				unsigned char **digest, size_t *digest_len,
+				char ***specfiles, size_t *num_specfiles) { return 0; }
+void selabel_stats(struct selabel_handle *handle) { }
+int selinux_restorecon(const char *pathname,
+					unsigned int restorecon_flags) { return 0; }
+struct selabel_handle *selinux_restorecon_default_handle(void) { return 0; }
+void selinux_restorecon_set_exclude_list(const char **exclude_list) { }
+int selinux_restorecon_set_alt_rootpath(const char *alt_rootpath) { return 0; }
+int selinux_restorecon_xattr(const char *pathname,
+					unsigned int xattr_flags,
+					struct dir_xattr ***xattr_list) { return 0; }

jni/external/stubs/sqlite3_stub.c

@@ -0,0 +1,676 @@
+#include "sqlite3.h"
+SQLITE_API const char *sqlite3_libversion(void) { return 0; }
+SQLITE_API const char *sqlite3_sourceid(void) { return 0; }
+SQLITE_API int sqlite3_libversion_number(void) { return 0; }
+#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
+SQLITE_API int sqlite3_compileoption_used(const char *zOptName) { return 0; }
+SQLITE_API const char *sqlite3_compileoption_get(int N) { return 0; }
+#endif
+SQLITE_API int sqlite3_threadsafe(void) { return 0; }
+SQLITE_API int sqlite3_close(sqlite3 *db) { return 0; }
+SQLITE_API int sqlite3_close_v2(sqlite3 *db) { return 0; }
+SQLITE_API int sqlite3_exec(
+  sqlite3 *db,
+  const char *sql,
+  int (*callback)(void*,int,char**,char**),
+  void *v,
+  char **errmsg
+) { return 0; }
+SQLITE_API int sqlite3_initialize(void) { return 0; }
+SQLITE_API int sqlite3_shutdown(void) { return 0; }
+SQLITE_API int sqlite3_os_init(void) { return 0; }
+SQLITE_API int sqlite3_os_end(void) { return 0; }
+SQLITE_API int sqlite3_config(int i, ...) { return 0; }
+SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...) { return 0; }
+SQLITE_API int sqlite3_extended_result_codes(sqlite3 *db, int onoff) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_last_insert_rowid(sqlite3 *db) { return 0; }
+SQLITE_API void sqlite3_set_last_insert_rowid(sqlite3 *db,sqlite3_int64 i) { }
+SQLITE_API int sqlite3_changes(sqlite3 *db) { return 0; }
+SQLITE_API int sqlite3_total_changes(sqlite3 *db) { return 0; }
+SQLITE_API void sqlite3_interrupt(sqlite3 *db) { }
+SQLITE_API int sqlite3_complete(const char *sql) { return 0; }
+SQLITE_API int sqlite3_complete16(const void *sql) { return 0; }
+SQLITE_API int sqlite3_busy_handler(sqlite3 *db, int(*f) (void *v,int i), void* v) { return 0; }
+SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms) { return 0; }
+SQLITE_API int sqlite3_get_table(
+  sqlite3 *db,
+  const char *zSql,
+  char ***pazResult,
+  int *pnRow,
+  int *pnColumn,
+  char **pzErrmsg
+) { return 0; }
+SQLITE_API void sqlite3_free_table(char **result) { }
+SQLITE_API char *sqlite3_mprintf(const char* s,...) { return 0; }
+SQLITE_API char *sqlite3_vmprintf(const char* s, va_list v) { return 0; }
+SQLITE_API char *sqlite3_snprintf(int i, char* s, const char* st, ...) { return 0; }
+SQLITE_API char *sqlite3_vsnprintf(int i, char* s, const char* st, va_list v) { return 0; }
+SQLITE_API void *sqlite3_malloc(int i) { return 0; }
+SQLITE_API void *sqlite3_malloc64(sqlite3_uint64 i) { return 0; }
+SQLITE_API void *sqlite3_realloc(void* v, int i) { return 0; }
+SQLITE_API void *sqlite3_realloc64(void* v, sqlite3_uint64 i) { return 0; }
+SQLITE_API void sqlite3_free(void* v) { }
+SQLITE_API sqlite3_uint64 sqlite3_msize(void* v) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_memory_used(void) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag) { return 0; }
+SQLITE_API void sqlite3_randomness(int N, void *P) { }
+SQLITE_API int sqlite3_set_authorizer(
+  sqlite3 *db,
+  int (*xAuth)(void *v,int i,const char*,const char*,const char*,const char*),
+  void *pUserData
+) { return 0; }
+SQLITE_API SQLITE_DEPRECATED void *sqlite3_trace(sqlite3 *db,
+   void(*xTrace)(void *v,const char*), void* v) { return 0; }
+SQLITE_API SQLITE_DEPRECATED void *sqlite3_profile(sqlite3 *db,
+   void(*xProfile)(void *v,const char*,sqlite3_uint64), void* v) { return 0; }
+SQLITE_API int sqlite3_trace_v2(
+  sqlite3 *db,
+  unsigned uMask,
+  int(*xCallback)(unsigned,void *v,void *vv,void*),
+  void *pCtx
+) { return 0; }
+SQLITE_API void sqlite3_progress_handler(sqlite3 *db, int i, int(*f)(void*), void* v) { }
+SQLITE_API int sqlite3_open(
+  const char *filename,
+  sqlite3 **ppDb
+) { return 0; }
+SQLITE_API int sqlite3_open16(
+  const void *filename,
+  sqlite3 **ppDb
+) { return 0; }
+SQLITE_API int sqlite3_open_v2(
+  const char *filename,
+  sqlite3 **ppDb,
+  int flags,
+  const char *zVfs
+) { return 0; }
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam) { return 0; }
+SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char* s, const char* st, sqlite3_int64 i) { return 0; }
+SQLITE_API int sqlite3_errcode(sqlite3 *db) { return 0; }
+SQLITE_API int sqlite3_extended_errcode(sqlite3 *db) { return 0; }
+SQLITE_API const char *sqlite3_errmsg(sqlite3 *db) { return 0; }
+SQLITE_API const void *sqlite3_errmsg16(sqlite3 *db) { return 0; }
+SQLITE_API const char *sqlite3_errstr(int i) { return 0; }
+SQLITE_API int sqlite3_limit(sqlite3 *db, int id, int newVal) { return 0; }
+SQLITE_API int sqlite3_prepare(
+  sqlite3 *db,
+  const char *zSql,
+  int nByte,
+  sqlite3_stmt **ppStmt,
+  const char **pzTail
+) { return 0; }
+SQLITE_API int sqlite3_prepare_v2(
+  sqlite3 *db,
+  const char *zSql,
+  int nByte,
+  sqlite3_stmt **ppStmt,
+  const char **pzTail
+) { return 0; }
+SQLITE_API int sqlite3_prepare16(
+  sqlite3 *db,
+  const void *zSql,
+  int nByte,
+  sqlite3_stmt **ppStmt,
+  const void **pzTail
+) { return 0; }
+SQLITE_API int sqlite3_prepare16_v2(
+  sqlite3 *db,
+  const void *zSql,
+  int nByte,
+  sqlite3_stmt **ppStmt,
+  const void **pzTail
+) { return 0; }
+SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt* s) { return 0; }
+SQLITE_API int sqlite3_bind_blob(sqlite3_stmt* s, int i, const void*v, int n, void(*f)(void*)) { return 0; }
+SQLITE_API int sqlite3_bind_blob64(sqlite3_stmt* s, int i, const void *v, sqlite3_uint64 ii,
+                        void(*f)(void*)) { return 0; }
+SQLITE_API int sqlite3_bind_double(sqlite3_stmt* s, int i, double d) { return 0; }
+SQLITE_API int sqlite3_bind_int(sqlite3_stmt* s, int i, int ii) { return 0; }
+SQLITE_API int sqlite3_bind_int64(sqlite3_stmt* s, int i, sqlite3_int64 ii) { return 0; }
+SQLITE_API int sqlite3_bind_null(sqlite3_stmt* s, int i) { return 0; }
+SQLITE_API int sqlite3_bind_text(sqlite3_stmt* s,int i,const char* str, int ii, void(*f)(void*)) { return 0; }
+SQLITE_API int sqlite3_bind_text16(sqlite3_stmt* s, int i, const void *v, int ii, void(*f)(void*)) { return 0; }
+SQLITE_API int sqlite3_bind_text64(sqlite3_stmt* s, int i, const char* str, sqlite3_uint64 ii,
+                         void(*f)(void*), unsigned char encoding) { return 0; }
+SQLITE_API int sqlite3_bind_value(sqlite3_stmt* s, int i, const sqlite3_value* v) { return 0; }
+SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt* s, int i, int n) { return 0; }
+SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt* s, int i, sqlite3_uint64 ii) { return 0; }
+SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt* s) { return 0; }
+SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt* s, int i) { return 0; }
+SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt* s, const char *zName) { return 0; }
+SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt* s) { return 0; }
+SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API const char *sqlite3_column_name(sqlite3_stmt* s, int N) { return 0; }
+SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt* s, int N) { return 0; }
+SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt* s,int i){ return 0; }
+SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt* s,int i) { return 0; }
+SQLITE_API int sqlite3_step(sqlite3_stmt* s) { return 0; }
+SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API int sqlite3_column_bytes(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API int sqlite3_column_bytes16(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API double sqlite3_column_double(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API int sqlite3_column_int(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_column_int64(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API const unsigned char *sqlite3_column_text(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API const void *sqlite3_column_text16(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API int sqlite3_column_type(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt* s, int iCol) { return 0; }
+SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API int sqlite3_create_function(
+  sqlite3 *db,
+  const char *zFunctionName,
+  int nArg,
+  int eTextRep,
+  void *pApp,
+  void (*xFunc)(sqlite3_context* c,int i,sqlite3_value**),
+  void (*xStep)(sqlite3_context* c,int i,sqlite3_value**),
+  void (*xFinal)(sqlite3_context* c)
+) { return 0; }
+SQLITE_API int sqlite3_create_function16(
+  sqlite3 *db,
+  const void *zFunctionName,
+  int nArg,
+  int eTextRep,
+  void *pApp,
+  void (*xFunc)(sqlite3_context* c,int i,sqlite3_value**),
+  void (*xStep)(sqlite3_context* c,int i,sqlite3_value**),
+  void (*xFinal)(sqlite3_context* c)
+) { return 0; }
+SQLITE_API int sqlite3_create_function_v2(
+  sqlite3 *db,
+  const char *zFunctionName,
+  int nArg,
+  int eTextRep,
+  void *pApp,
+  void (*xFunc)(sqlite3_context* c,int i,sqlite3_value**),
+  void (*xStep)(sqlite3_context* c,int i,sqlite3_value**),
+  void (*xFinal)(sqlite3_context* c),
+  void(*xDestroy)(void*)
+) { return 0; }
+#ifndef SQLITE_OMIT_DEPRECATED
+SQLITE_API SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context* c) { return 0; }
+SQLITE_API SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt* s) { return 0; }
+SQLITE_API SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt* s, sqlite3_stmt* ss) { return 0; }
+SQLITE_API SQLITE_DEPRECATED int sqlite3_global_recover(void) { return 0; }
+SQLITE_API SQLITE_DEPRECATED void sqlite3_thread_cleanup(void) { }
+SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*f)(void *v,sqlite3_int64,int),
+                      void *v,sqlite3_int64 i) { return 0; }
+#endif
+SQLITE_API const void *sqlite3_value_blob(sqlite3_value* v) { return 0; }
+SQLITE_API int sqlite3_value_bytes(sqlite3_value* v) { return 0; }
+SQLITE_API int sqlite3_value_bytes16(sqlite3_value* v) { return 0; }
+SQLITE_API double sqlite3_value_double(sqlite3_value* v) { return 0; }
+SQLITE_API int sqlite3_value_int(sqlite3_value* v) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_value_int64(sqlite3_value* v) { return 0; }
+SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value* v) { return 0; }
+SQLITE_API const void *sqlite3_value_text16(sqlite3_value* v) { return 0; }
+SQLITE_API const void *sqlite3_value_text16le(sqlite3_value* v) { return 0; }
+SQLITE_API const void *sqlite3_value_text16be(sqlite3_value* v) { return 0; }
+SQLITE_API int sqlite3_value_type(sqlite3_value* v) { return 0; }
+SQLITE_API int sqlite3_value_numeric_type(sqlite3_value* v) { return 0; }
+SQLITE_API unsigned int sqlite3_value_subtype(sqlite3_value* v) { return 0; }
+SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value* v) { return 0; }
+SQLITE_API void sqlite3_value_free(sqlite3_value* v) { }
+SQLITE_API void *sqlite3_aggregate_context(sqlite3_context* c, int nBytes) { return 0; }
+SQLITE_API void *sqlite3_user_data(sqlite3_context* c) { return 0; }
+SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context* c) { return 0; }
+SQLITE_API void *sqlite3_get_auxdata(sqlite3_context* c, int N) { return 0; }
+SQLITE_API void sqlite3_set_auxdata(sqlite3_context* c, int N, void *v, void (*f)(void*)) { }
+SQLITE_API void sqlite3_result_blob(sqlite3_context* c, const void *v, int i, void(*f)(void*)) { }
+SQLITE_API void sqlite3_result_blob64(sqlite3_context* c,const void *v,
+                           sqlite3_uint64 i,void(*f)(void*)) { }
+SQLITE_API void sqlite3_result_double(sqlite3_context* c, double d) { }
+SQLITE_API void sqlite3_result_error(sqlite3_context* c, const char* s, int i) { }
+SQLITE_API void sqlite3_result_error16(sqlite3_context* c, const void *v, int i) { }
+SQLITE_API void sqlite3_result_error_toobig(sqlite3_context* c) { }
+SQLITE_API void sqlite3_result_error_nomem(sqlite3_context* c) { }
+SQLITE_API void sqlite3_result_error_code(sqlite3_context* c, int i) { }
+SQLITE_API void sqlite3_result_int(sqlite3_context* c, int i) { }
+SQLITE_API void sqlite3_result_int64(sqlite3_context* c, sqlite3_int64 i) { }
+SQLITE_API void sqlite3_result_null(sqlite3_context* c) { }
+SQLITE_API void sqlite3_result_text(sqlite3_context* c, const char* s, int i, void(*f)(void*)) { }
+SQLITE_API void sqlite3_result_text64(sqlite3_context* c, const char* s, sqlite3_uint64 i,
+                           void(*f)(void*), unsigned char encoding) { }
+SQLITE_API void sqlite3_result_text16(sqlite3_context* c, const void *v, int i, void(*f)(void*)) { }
+SQLITE_API void sqlite3_result_text16le(sqlite3_context* c, const void *v, int i,void(*f)(void*)) { }
+SQLITE_API void sqlite3_result_text16be(sqlite3_context* c, const void *v, int i,void(*f)(void*)) { }
+SQLITE_API void sqlite3_result_value(sqlite3_context* c, sqlite3_value* v) { }
+SQLITE_API void sqlite3_result_zeroblob(sqlite3_context* c, int n) { }
+SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context* c, sqlite3_uint64 n) { return 0; }
+SQLITE_API void sqlite3_result_subtype(sqlite3_context* c,unsigned int i) { }
+SQLITE_API int sqlite3_create_collation(
+  sqlite3 *db,
+  const char *zName,
+  int eTextRep,
+  void *pArg,
+  int(*xCompare)(void *,int,const void *,int,const void*)
+) { return 0; }
+SQLITE_API int sqlite3_create_collation_v2(
+  sqlite3 *db,
+  const char *zName,
+  int eTextRep,
+  void *pArg,
+  int(*xCompare)(void *,int,const void*,int,const void*),
+  void(*xDestroy)(void*)
+) { return 0; }
+SQLITE_API int sqlite3_create_collation16(
+  sqlite3 *db,
+  const void *zName,
+  int eTextRep,
+  void *pArg,
+  int(*xCompare)(void *,int,const void *,int,const void*)
+) { return 0; }
+SQLITE_API int sqlite3_collation_needed(
+  sqlite3 *db,
+  void *v,
+  void(*f)(void *v,sqlite3 *db,int eTextRep,const char*)
+) { return 0; }
+SQLITE_API int sqlite3_collation_needed16(
+  sqlite3 *db,
+  void *v,
+  void(*f)(void *v,sqlite3 *db,int eTextRep,const void*)
+) { return 0; }
+#ifdef SQLITE_HAS_CODEC
+SQLITE_API int sqlite3_key(
+  sqlite3 *db,
+  const void *pKey, int nKey
+) { return 0; }
+SQLITE_API int sqlite3_key_v2(
+  sqlite3 *db,
+  const char *zDbName,
+  const void *pKey, int nKey
+) { return 0; }
+SQLITE_API int sqlite3_rekey(
+  sqlite3 *db,
+  const void *pKey, int nKey
+) { return 0; }
+SQLITE_API int sqlite3_rekey_v2(
+  sqlite3 *db,
+  const char *zDbName,
+  const void *pKey, int nKey
+) { return 0; }
+SQLITE_API void sqlite3_activate_see(
+  const char *zPassPhrase
+) { return 0; }
+#endif
+#ifdef SQLITE_ENABLE_CEROD
+SQLITE_API void sqlite3_activate_cerod(
+  const char *zPassPhrase
+) { return 0; }
+#endif
+SQLITE_API int sqlite3_sleep(int i) { return 0; }
+SQLITE_API int sqlite3_get_autocommit(sqlite3 *db) { return 0; }
+SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt *s) { return 0; }
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName) { return 0; }
+SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName) { return 0; }
+SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt) { return 0; }
+SQLITE_API void *sqlite3_commit_hook(sqlite3 *db, int(*f)(void*), void *v) { return 0; }
+SQLITE_API void *sqlite3_rollback_hook(sqlite3 *db, void(*f)(void *), void *v) { return 0; }
+SQLITE_API void *sqlite3_update_hook(
+  sqlite3 *db,
+  void(*f)(void *,int ,char const *,char const *,sqlite3_int64),
+  void *v
+) { return 0; }
+SQLITE_API int sqlite3_enable_shared_cache(int i) { return 0; }
+SQLITE_API int sqlite3_release_memory(int i) { return 0; }
+SQLITE_API int sqlite3_db_release_memory(sqlite3 *db) { return 0; }
+SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N) { return 0; }
+SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N) { }
+SQLITE_API int sqlite3_table_column_metadata(
+  sqlite3 *db,
+  const char *zDbName,
+  const char *zTableName,
+  const char *zColumnName,
+  char const **pzDataType,
+  char const **pzCollSeq,
+  int *pNotNull,
+  int *pPrimaryKey,
+  int *pAutoinc
+) { return 0; }
+SQLITE_API int sqlite3_load_extension(
+  sqlite3 *db,
+  const char *zFile,
+  const char *zProc,
+  char **pzErrMsg
+) { return 0; }
+SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff) { return 0; }
+SQLITE_API int sqlite3_auto_extension(void(*xEntryPoint)(void)) { return 0; }
+SQLITE_API int sqlite3_cancel_auto_extension(void(*xEntryPoint)(void)) { return 0; }
+SQLITE_API void sqlite3_reset_auto_extension(void) { }
+SQLITE_API int sqlite3_create_module(
+  sqlite3 *db,
+  const char *zName,
+  const sqlite3_module *p,
+  void *pClientData
+) { return 0; }
+SQLITE_API int sqlite3_create_module_v2(
+  sqlite3 *db,
+  const char *zName,
+  const sqlite3_module *p,
+  void *pClientData,
+  void(*xDestroy)(void*)
+) { return 0; }
+SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zSQL) { return 0; }
+SQLITE_API int sqlite3_overload_function(sqlite3 *db, const char *zFuncName, int nArg) { return 0; }
+SQLITE_API int sqlite3_blob_open(
+  sqlite3 *db,
+  const char *zDb,
+  const char *zTable,
+  const char *zColumn,
+  sqlite3_int64 iRow,
+  int flags,
+  sqlite3_blob **ppBlob
+) { return 0; }
+SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *b, sqlite3_int64 i) { return 0; }
+SQLITE_API int sqlite3_blob_close(sqlite3_blob *b) { return 0; }
+SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *b) { return 0; }
+SQLITE_API int sqlite3_blob_read(sqlite3_blob *b, void *Z, int N, int iOffset) { return 0; }
+SQLITE_API int sqlite3_blob_write(sqlite3_blob *b, const void *z, int n, int iOffset) { return 0; }
+SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName) { return 0; }
+SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *v, int makeDflt) { return 0; }
+SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *v) { return 0; }
+SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int i) { return 0; }
+SQLITE_API void sqlite3_mutex_free(sqlite3_mutex *m) { }
+SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex *m) { }
+SQLITE_API int sqlite3_mutex_try(sqlite3_mutex *m) { return 0; }
+SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex *m) { }
+#ifndef NDEBUG
+SQLITE_API int sqlite3_mutex_held(sqlite3_mutex *m) { return 0; }
+SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *m) { return 0; }
+#endif
+SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3* db) { return 0; }
+SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, void* v) { return 0; }
+SQLITE_API int sqlite3_test_control(int op, ...) { return 0; }
+SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag) { return 0; }
+SQLITE_API int sqlite3_status64(
+  int op,
+  sqlite3_int64 *pCurrent,
+  sqlite3_int64 *pHighwater,
+  int resetFlag
+) { return 0; }
+SQLITE_API int sqlite3_db_status(sqlite3 *db, int op, int *pCur, int *pHiwtr, int resetFlg) { return 0; }
+SQLITE_API int sqlite3_stmt_status(sqlite3_stmt* s, int op,int resetFlg) { return 0; }
+SQLITE_API sqlite3_backup *sqlite3_backup_init(
+  sqlite3 *pDest,
+  const char *zDestName,
+  sqlite3 *pSource,
+  const char *zSourceName
+) { return 0; }
+SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage) { return 0; }
+SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p) { return 0; }
+SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p) { return 0; }
+SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p) { return 0; }
+SQLITE_API int sqlite3_unlock_notify(
+  sqlite3 *pBlocked,
+  void (*xNotify)(void **apArg, int nArg),
+  void *pNotifyArg
+) { return 0; }
+SQLITE_API int sqlite3_stricmp(const char *s, const char *ss) { return 0; }
+SQLITE_API int sqlite3_strnicmp(const char *s, const char *ss, int i) { return 0; }
+SQLITE_API int sqlite3_strglob(const char *zGlob, const char *zStr) { return 0; }
+SQLITE_API int sqlite3_strlike(const char *zGlob, const char *zStr, unsigned int cEsc) { return 0; }
+SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...) { }
+SQLITE_API void *sqlite3_wal_hook(
+  sqlite3 *db,
+  int(*f)(void *,sqlite3 *db,const char*,int i),
+  void *v
+) { return 0; }
+SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N) { return 0; }
+SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb) { return 0; }
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+  sqlite3 *db,
+  const char *zDb,
+  int eMode,
+  int *pnLog,
+  int *pnCkpt
+) { return 0; }
+#define SQLITE_CHECKPOINT_PASSIVE  0
+#define SQLITE_CHECKPOINT_FULL     1
+#define SQLITE_CHECKPOINT_RESTART  2
+#define SQLITE_CHECKPOINT_TRUNCATE 3
+SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...) { return 0; }
+#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db) { return 0; }
+#define SQLITE_ROLLBACK 1
+#define SQLITE_FAIL     3
+#define SQLITE_REPLACE  5
+#define SQLITE_SCANSTAT_NLOOP    0
+#define SQLITE_SCANSTAT_NVISIT   1
+#define SQLITE_SCANSTAT_EST      2
+#define SQLITE_SCANSTAT_NAME     3
+#define SQLITE_SCANSTAT_EXPLAIN  4
+#define SQLITE_SCANSTAT_SELECTID 5
+SQLITE_API int sqlite3_stmt_scanstatus(
+  sqlite3_stmt *pStmt,
+  int idx,
+  int iScanStatusOp,
+  void *pOut
+) { return 0; }
+SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt *s) { }
+SQLITE_API int sqlite3_db_cacheflush(sqlite3* db) { return 0; }
+#if defined(SQLITE_ENABLE_PREUPDATE_HOOK)
+SQLITE_API void *sqlite3_preupdate_hook(
+  sqlite3 *db,
+  void(*xPreUpdate)(
+    void *pCtx,
+    sqlite3 *db,
+    int op,
+    char const *zDb,
+    char const *zName,
+    sqlite3_int64 iKey1,
+    sqlite3_int64 iKey2
+  ),
+  void*
+) { return 0; }
+SQLITE_API int sqlite3_preupdate_old(sqlite3 *, int i, sqlite3_value **) { return 0; }
+SQLITE_API int sqlite3_preupdate_count(sqlite3 *) { return 0; }
+SQLITE_API int sqlite3_preupdate_depth(sqlite3 *) { return 0; }
+SQLITE_API int sqlite3_preupdate_new(sqlite3 *, int i, sqlite3_value **) { return 0; }
+#endif
+SQLITE_API int sqlite3_system_errno(sqlite3 *db) { return 0; }
+SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get(
+  sqlite3 *db,
+  const char *zSchema,
+  sqlite3_snapshot **ppSnapshot
+) { return 0; }
+SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_open(
+  sqlite3 *db,
+  const char *zSchema,
+  sqlite3_snapshot *pSnapshot
+) { return 0; }
+SQLITE_API SQLITE_EXPERIMENTAL void sqlite3_snapshot_free(sqlite3_snapshot* s) { }
+SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_cmp(
+  sqlite3_snapshot *p1,
+  sqlite3_snapshot *p2
+) { return 0; }
+SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb) { return 0; }
+SQLITE_API int sqlite3_rtree_geometry_callback(
+  sqlite3 *db,
+  const char *zGeom,
+  int (*xGeom)(sqlite3_rtree_geometry*, int i, sqlite3_rtree_dbl*,int*),
+  void *pContext
+) { return 0; }
+SQLITE_API int sqlite3_rtree_query_callback(
+  sqlite3 *db,
+  const char *zQueryFunc,
+  int (*xQueryFunc)(sqlite3_rtree_query_info*),
+  void *pContext,
+  void (*xDestructor)(void*)
+) { return 0; }
+typedef struct sqlite3_session sqlite3_session;
+typedef struct sqlite3_changeset_iter sqlite3_changeset_iter;
+SQLITE_API int sqlite3session_create(
+  sqlite3 *db,
+  const char *zDb,
+  sqlite3_session **ppSession
+) { return 0; }
+SQLITE_API void sqlite3session_delete(sqlite3_session *pSession) { }
+SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable) { return 0; }
+SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect) { return 0; }
+SQLITE_API int sqlite3session_attach(
+  sqlite3_session *pSession,
+  const char *zTab
+) { return 0; }
+SQLITE_API void sqlite3session_table_filter(
+  sqlite3_session *pSession,
+  int(*xFilter)(
+    void *pCtx,
+    const char *zTab
+  ),
+  void *pCtx
+) { }
+SQLITE_API int sqlite3session_changeset(
+  sqlite3_session *pSession,
+  int *pnChangeset,
+  void **ppChangeset
+) { return 0; }
+SQLITE_API int sqlite3session_diff(
+  sqlite3_session *pSession,
+  const char *zFromDb,
+  const char *zTbl,
+  char **pzErrMsg
+) { return 0; }
+SQLITE_API int sqlite3session_patchset(
+  sqlite3_session *pSession,
+  int *pnPatchset,
+  void **ppPatchset
+) { return 0; }
+SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession) { return 0; }
+SQLITE_API int sqlite3changeset_start(
+  sqlite3_changeset_iter **pp,
+  int nChangeset,
+  void *pChangeset
+) { return 0; }
+SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter) { return 0; }
+SQLITE_API int sqlite3changeset_op(
+  sqlite3_changeset_iter *pIter,
+  const char **pzTab,
+  int *pnCol,
+  int *pOp,
+  int *pbIndirect
+) { return 0; }
+SQLITE_API int sqlite3changeset_pk(
+  sqlite3_changeset_iter *pIter,
+  unsigned char **pabPK,
+  int *pnCol
+) { return 0; }
+SQLITE_API int sqlite3changeset_old(
+  sqlite3_changeset_iter *pIter,
+  int iVal,
+  sqlite3_value **ppValue
+) { return 0; }
+SQLITE_API int sqlite3changeset_new(
+  sqlite3_changeset_iter *pIter,
+  int iVal,
+  sqlite3_value **ppValue
+) { return 0; }
+SQLITE_API int sqlite3changeset_conflict(
+  sqlite3_changeset_iter *pIter,
+  int iVal,
+  sqlite3_value **ppValue
+) { return 0; }
+SQLITE_API int sqlite3changeset_fk_conflicts(
+  sqlite3_changeset_iter *pIter,
+  int *pnOut
+) { return 0; }
+SQLITE_API int sqlite3changeset_finalize(sqlite3_changeset_iter *pIter) { return 0; }
+SQLITE_API int sqlite3changeset_invert(
+  int nIn, const void *pIn,
+  int *pnOut, void **ppOut
+) { return 0; }
+SQLITE_API int sqlite3changeset_concat(
+  int nA,
+  void *pA,
+  int nB,
+  void *pB,
+  int *pnOut,
+  void **ppOut
+) { return 0; }
+typedef struct sqlite3_changegroup sqlite3_changegroup;
+int sqlite3changegroup_new(sqlite3_changegroup **pp) { return 0; }
+int sqlite3changegroup_add(sqlite3_changegroup *c, int nData, void *pData) { return 0; }
+int sqlite3changegroup_output(
+  sqlite3_changegroup *c,
+  int *pnData,
+  void **ppData
+) { return 0; }
+void sqlite3changegroup_delete(sqlite3_changegroup *c) { }
+SQLITE_API int sqlite3changeset_apply(
+  sqlite3 *db,
+  int nChangeset,
+  void *pChangeset,
+  int(*xFilter)(
+    void *pCtx,
+    const char *zTab
+  ),
+  int(*xConflict)(
+    void *pCtx,
+    int eConflict,
+    sqlite3_changeset_iter *p
+  ),
+  void *pCtx
+) { return 0; }
+SQLITE_API int sqlite3changeset_apply_strm(
+  sqlite3 *db,
+  int (*xInput)(void *pIn, void *pData, int *pnData),
+  void *pIn,
+  int(*xFilter)(
+    void *pCtx,
+    const char *zTab
+  ),
+  int(*xConflict)(
+    void *pCtx,
+    int eConflict,
+    sqlite3_changeset_iter *p
+  ),
+  void *pCtx
+) { return 0; }
+SQLITE_API int sqlite3changeset_concat_strm(
+  int (*xInputA)(void *pIn, void *pData, int *pnData),
+  void *pInA,
+  int (*xInputB)(void *pIn, void *pData, int *pnData),
+  void *pInB,
+  int (*xOutput)(void *pOut, const void *pData, int nData),
+  void *pOut
+) { return 0; }
+SQLITE_API int sqlite3changeset_invert_strm(
+  int (*xInput)(void *pIn, void *pData, int *pnData),
+  void *pIn,
+  int (*xOutput)(void *pOut, const void *pData, int nData),
+  void *pOut
+) { return 0; }
+SQLITE_API int sqlite3changeset_start_strm(
+  sqlite3_changeset_iter **pp,
+  int (*xInput)(void *pIn, void *pData, int *pnData),
+  void *pIn
+) { return 0; }
+SQLITE_API int sqlite3session_changeset_strm(
+  sqlite3_session *pSession,
+  int (*xOutput)(void *pOut, const void *pData, int nData),
+  void *pOut
+) { return 0; }
+SQLITE_API int sqlite3session_patchset_strm(
+  sqlite3_session *pSession,
+  int (*xOutput)(void *pOut, const void *pData, int nData),
+  void *pOut
+) { return 0; }
+int sqlite3changegroup_add_strm(sqlite3_changegroup *c,
+    int (*xInput)(void *pIn, void *pData, int *pnData),
+    void *pIn
+) { return 0; }
+int sqlite3changegroup_output_strm(sqlite3_changegroup *c,
+    int (*xOutput)(void *pOut, const void *pData, int nData),
+    void *pOut
+) { return 0; }

jni/extract.c

@@ -1,149 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/sendfile.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <assert.h>
-#include <string.h>
-
-#include "bootimgtools.h"
-
-void dump(uint8_t *ptr, size_t size, char* filename) {
-	unlink(filename);
-	int ofd = open(filename, O_WRONLY|O_CREAT, 0644);
-	assert(ofd >= 0);
-	int ret = write(ofd, ptr, size);
-	assert(ret == size);
-	close(ofd);
-}
-
-//TODO: Search for other header types
-void dump_ramdisk(uint8_t *ptr, size_t size) {
-	//GZip header
-	if(memcmp(ptr, "\x1f\x8b\x08\x00", 4) == 0) {
-		dump(ptr, size, "ramdisk.gz");
-	//MTK header
-	} else if(memcmp(ptr, "\x88\x16\x88\x58", 4) == 0) {
-		if(memcmp(ptr+8, "RECOVERY", 8)==0) {
-			dump(ptr, 0, "ramdisk-mtk-recovery");
-		} else if(memcmp(ptr+8, "ROOTFS\0\0", 8)==0) {
-			dump(ptr, 0, "ramdisk-mtk-boot");
-		} else {
-			exit(1);
-		}
-		dump(ptr, 0, "ramdisk-mtk"); //Create an mtk flag
-		dump_ramdisk(ptr+512, size-512);
-	} else {
-		//Since our first aim is to extract/repack ramdisk
-		//Stop if we can't find it
-		//Still dump it for debug purposes
-		dump(ptr, size, "ramdisk");
-
-		fprintf(stderr, "Unknown ramdisk type\n");
-		abort();
-	}
-}
-
-void search_security_hdr(uint8_t *buf, size_t size) {
-	if(memcmp(buf, "CHROMEOS", 8) == 0) {
-		dump(buf, 0, "chromeos");
-		return;
-	}
-}
-
-int search_security(uint8_t *buf, size_t size, int pos) {
-	//Rockchip signature
-	if(memcmp(buf+1024, "SIGN", 4) == 0) {
-		//Rockchip signature AT LEAST means the bootloader will check the crc
-		dump(buf, 0, "rkcrc"); //Create an flag to tell it
-
-		//And it's possible there is a security too
-		return 1;
-	}
-
-	//If we didn't parse the whole file, it is highly likely there is a boot signature
-	if(pos < size) {
-		return 1;
-	}
-
-	return 0;
-}
-
-/*
- * TODO:
- *  - At the moment we dump kernel + ramdisk + second + DT, it's likely we only want ramdisk
- *  - Error-handling via assert() is perhaps not the best
- */
-int extract(char *image) {
-
-	int fd = open(image, O_RDONLY);
-	off_t size = lseek(fd, 0, SEEK_END);
-	lseek(fd, 0, SEEK_SET);
-	uint8_t *orig = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
-	uint8_t *base = orig;
-	assert(base);
-
-	search_security_hdr(base, size);
-
-	//We're searching for the header in the whole file, we could stop earlier.
-	//At least HTC and nVidia have a signature header
-	while(base<(orig+size)) {
-		if(memcmp(base, BOOT_MAGIC, BOOT_MAGIC_SIZE) == 0)
-			break;
-		//We're searching every 256bytes, is it ok?
-		base += 256;
-	}
-	assert(base < (orig+size));
-
-	struct boot_img_hdr *hdr = (struct boot_img_hdr*) base;
-	assert(
-			hdr->page_size == 2048 ||
-			hdr->page_size == 4096 ||
-			hdr->page_size == 16384
-			);
-
-	long pos = hdr->page_size;
-	dump(base+pos, hdr->kernel_size, "kernel");
-	pos += hdr->kernel_size + hdr->page_size-1;
-	pos &= ~(hdr->page_size-1L);
-
-	dump_ramdisk(base+pos, hdr->ramdisk_size);
-	pos += hdr->ramdisk_size + hdr->page_size-1;
-	pos &= ~(hdr->page_size-1L);
-
-	if(hdr->second_size) {
-		assert( (pos+hdr->second_size) <= size);
-		dump(base+pos, hdr->second_size, "second");
-		pos += hdr->second_size + hdr->page_size-1;
-		pos &= ~(hdr->page_size-1L);
-	}
-
-	//This is non-standard, so we triple check
-	if( hdr->unused[0] &&
-			pos < size &&
-			(pos+hdr->unused[0]) <= size) {
-
-		if(memcmp(base+pos, "QCDT", 4) == 0 ||
-				memcmp(base+pos, "SPRD", 4) == 0 ||
-				memcmp(base+pos, "DTBH", 4) == 0 ||
-				memcmp(base+pos, "\xD0\x0D\xFE\xED", 4) == 0
-				) {
-			dump(base+pos, hdr->unused[0], "dt");
-			pos += hdr->unused[0] + hdr->page_size-1;
-			pos &= ~(hdr->page_size-1L);
-		}
-	}
-
-	//If we think we find some security-related infos in the boot.img
-	//create a "secure" flag to warn the user it is dangerous
-	if(search_security(base, size, pos)) {
-		dump(base, 0, "secure");
-	}
-
-	munmap(orig, size);
-	close(fd);
-	return 0;
-}

jni/hexpatch.c

@@ -1,66 +0,0 @@
-#include <getopt.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "bootimgtools.h"
-
-int hex2int(char c) {
-	int first = c / 16 - 3;
-	int second = c % 16;
-	int result = first * 10 + second;
-	if(result > 9) result--;
-	return result;
-}
-
-int hex2ascii(char c, char d) {
-	int high = hex2int(c) * 16;
-	int low = hex2int(d);
-	return high+low;
-}
-
-void hexstr2str(char *hex, char *str) {
-	char buf = 0;
-	for(int i = 0, length = strlen(hex); i < length; ++i){
-		if(i % 2){
-			str[i / 2] = hex2ascii(buf, hex[i]);
-		} else{
-			buf = hex[i];
-		}
-	}
-}
-
-int hexpatch(char * image, char *from, char *to) {
-	int fd = open(image, O_RDWR), patternsize = strlen(from) / 2, patchsize = strlen(to) / 2;
-	off_t filesize = lseek(fd, 0, SEEK_END);
-	char *file, *pattern, *patch, *start;
-	file = malloc(sizeof (char) * filesize);
-	pattern = malloc(sizeof (char) * patternsize);
-	patch = malloc(sizeof (char) * patchsize);
-	lseek(fd, 0, SEEK_SET);
-	read(fd, file, filesize);
-	hexstr2str(from, pattern);
-	hexstr2str(to, patch);
-	for (off_t i = 0; i < filesize;) {
-		int j;
-		for (j = 0; j < patternsize; ++j) {
-			if(file[i + j] != pattern[j]) break;
-		}
-		if (j == patternsize) {
-			fprintf(stderr, "Pattern %s found!\nPatching to %s\n", from, to);
-			lseek(fd, i, SEEK_SET);
-			write(fd, patch, patchsize);
-		}
-		if(j == 0) j = 1;
-		i += j;
-	}
-	free(file);
-	free(pattern);
-	free(patch);
-	close(fd);
-	return 0;
-}

jni/include/daemon.h

@@ -0,0 +1,81 @@
+/* daemon.h - Utility functions for daemon-client communication
+ */
+
+#ifndef _DAEMON_H_
+#define _DAEMON_H_
+
+#include <pthread.h>
+
+extern pthread_t sepol_patch;
+
+// Commands require connecting to daemon
+typedef enum {
+	DO_NOTHING = 0,
+	LAUNCH_MAGISKHIDE,
+	STOP_MAGISKHIDE,
+	ADD_HIDELIST,
+	RM_HIDELIST,
+	LS_HIDELIST,
+	SUPERUSER,
+	CHECK_VERSION,
+	CHECK_VERSION_CODE,
+	POST_FS,
+	POST_FS_DATA,
+	LATE_START,
+	TEST
+} client_request;
+
+// Return codes for daemon
+typedef enum {
+	DAEMON_ERROR = -1,
+	DAEMON_SUCCESS = 0,
+	ROOT_REQUIRED,
+	HIDE_IS_ENABLED,
+	HIDE_NOT_ENABLED,
+	HIDE_ITEM_EXIST,
+	HIDE_ITEM_NOT_EXIST,
+} daemon_response;
+
+// daemon.c
+
+void start_daemon(int client);
+int connect_daemon();
+
+// socket_trans.c
+
+int recv_fd(int sockfd);
+void send_fd(int sockfd, int fd);
+int read_int(int fd);
+void write_int(int fd, int val);
+char* read_string(int fd);
+void write_string(int fd, const char* val);
+
+// log_monitor.c
+
+void monitor_logs();
+
+/***************
+ * Boot Stages *
+ ***************/
+
+void post_fs(int client);
+void post_fs_data(int client);
+void late_start(int client);
+
+/**************
+ * MagiskHide *
+ **************/
+
+void launch_magiskhide(int client);
+void stop_magiskhide(int client);
+void add_hide_list(int client);
+void rm_hide_list(int client);
+void ls_hide_list(int client);
+
+/*************
+ * Superuser *
+ *************/
+
+void su_daemon_receiver(int client);
+
+#endif

jni/include/list.h

@@ -0,0 +1,43 @@
+/* list.h - Double link list implementation
+ */
+
+#ifndef _LIST_H_
+#define _LIST_H_
+
+#include <stddef.h>
+
+struct list_head {
+	struct list_head *next;
+	struct list_head *prev;
+};
+
+void init_list_head(struct list_head *head);
+void list_insert(struct list_head *pos, struct list_head *node);
+void list_insert_end(struct list_head *head, struct list_head *node);
+struct list_head *list_pop(struct list_head *pos);
+struct list_head *list_pop_end(struct list_head *head);
+
+#define list_entry(pos, type, member) ({ \
+	const typeof( ((type *)0)->member ) *__mptr = (pos); \
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
+#define list_for_each(ptr, head, type, member) \
+	ptr = list_entry((head)->next, type, member); \
+	for (struct list_head *__ = (head)->next; __ != (head); __ = __->next, ptr = list_entry(__, type, member))
+
+#define list_for_each_r(ptr, head, type, member) \
+	ptr = list_entry((head)->prev, type, member); \
+	for (struct list_head *__ = (head)->prev; __ != (head); __ = __->prev, ptr = list_entry(__, type, member))
+
+#define list_destory(head, type, member, func) ({ \
+	struct list_head *node = head->next; \
+	while(node != head) { \
+		node = node->next; \
+		if (func) func(list_entry(node->prev, line_list, pos)); \
+		free(list_entry(node->prev, line_list, pos)); \
+	} \
+	head->next = head; \
+	head->prev = head; \
+})
+
+#endif

jni/include/logging.h

@@ -0,0 +1,46 @@
+/* logging.h - Error handling and logging
+ */
+
+#ifndef _LOGGING_H_
+#define _LOGGING_H_
+
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#ifdef IS_DAEMON
+
+#include <pthread.h>
+#include <android/log.h>
+
+#define LOG_TAG    "Magisk"
+
+// Global handler for PLOGE
+extern __thread void (*err_handler)(void);
+
+// Common error handlers
+static inline void exit_proc() { exit(1); }
+static inline void exit_thread() { pthread_exit(NULL); }
+static inline void do_nothing() {}
+
+#ifdef MAGISK_DEBUG
+#define LOGD(...)  __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__)
+#else
+#define LOGD(...)  {}
+#endif
+#define LOGI(...)  __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
+#define LOGW(...)  __android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__)
+#define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
+
+#define PLOGE(fmt, args...) { LOGE(fmt " failed with %d: %s", ##args, errno, strerror(errno)); err_handler(); }
+
+#else // IS_DAEMON
+
+#include <stdio.h>
+
+#define LOGE(...) { fprintf(stderr, __VA_ARGS__); exit(1); }
+#define PLOGE(fmt, args...) { fprintf(stderr, fmt " failed with %d: %s\n\n", ##args, errno, strerror(errno)); exit(1); }
+
+#endif // IS_DAEMON
+
+#endif // _LOGGING_H_

jni/include/magisk.h

@@ -0,0 +1,64 @@
+/* magisk.h - Top header
+ */
+
+#ifndef _MAGISK_H_
+#define _MAGISK_H_
+
+#include "logging.h"
+
+#define str(a) #a
+#define xstr(a) str(a)
+
+#define MAGISK_VER_STR  xstr(MAGISK_VERSION) ":MAGISK"
+#define REQUESTOR_DAEMON_PATH     "\0MAGISK"
+
+#ifndef ARG_MAX
+#define ARG_MAX 4096
+#endif
+
+#define LOGFILE         "/cache/magisk.log"
+#define LASTLOG         "/cache/last_magisk.log"
+#define DEBUG_LOG       "/data/magisk_debug.log"
+#define UNBLOCKFILE     "/dev/.magisk.unblock"
+#define DISABLEFILE     "/cache/.disable_magisk"
+#define UNINSTALLER     "/cache/magisk_uninstaller.sh"
+#define MOUNTPOINT      "/magisk"
+#define COREDIR         MOUNTPOINT "/.core"
+#define HOSTSFILE       COREDIR "/hosts"
+#define HIDELIST        COREDIR "/hidelist"
+#define MAINIMG         "/data/magisk.img"
+#define DATABIN         "/data/magisk"
+#define MANAGERAPK      DATABIN "/magisk.apk"
+#define MAGISKTMP       "/dev/magisk"
+#define MIRRDIR         MAGISKTMP "/mirror"
+#define BBPATH          MAGISKTMP "/bin"
+#define CACHEMOUNT      "/cache/magisk_mount"
+
+#define SELINUX_PATH        "/sys/fs/selinux/"
+#define SELINUX_ENFORCE     SELINUX_PATH "enforce"
+#define SELINUX_POLICY      SELINUX_PATH "policy"
+#define SELINUX_LOAD        SELINUX_PATH "load"
+
+#define MAGISKHIDE_PROP     "persist.magisk.hide"
+
+extern char *argv0;     /* For changing process name */
+
+extern char *applet[];
+extern int (*applet_main[]) (int, char *[]);
+
+int create_links(const char *bin, const char *path);
+
+// Multi-call entrypoints
+int magiskhide_main(int argc, char *argv[]);
+int magiskpolicy_main(int argc, char *argv[]);
+int su_client_main(int argc, char *argv[]);
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+int resetprop_main(int argc, char *argv[]);
+#ifdef __cplusplus
+}
+#endif
+
+#endif

jni/include/magiskpolicy.h

@@ -0,0 +1,36 @@
+/* magiskpolicy.h - Public API for policy patching
+ */
+
+#ifndef _MAGISKPOLICY_H
+#define _MAGISKPOLICY_H
+
+#include <stdlib.h>
+
+#define ALL NULL
+
+// policydb functions
+int load_policydb(const char *filename);
+int dump_policydb(const char *filename);
+void destroy_policydb();
+
+// Handy functions
+int sepol_allow(char *s, char *t, char *c, char *p);
+int sepol_deny(char *s, char *t, char *c, char *p);
+int sepol_auditallow(char *s, char *t, char *c, char *p);
+int sepol_auditdeny(char *s, char *t, char *c, char *p);
+int sepol_typetrans(char *s, char *t, char *c, char *d, char *o);
+int sepol_allowxperm(char *s, char *t, char *c, char *range);
+int sepol_auditallowxperm(char *s, char *t, char *c, char *range);
+int sepol_dontauditxperm(char *s, char *t, char *c, char *range);
+int sepol_create(char *s);
+int sepol_permissive(char *s);
+int sepol_enforce(char *s);
+int sepol_attradd(char *s, char *a);
+int sepol_exists(char *source);
+
+// Built in rules
+void sepol_min_rules();
+void sepol_med_rules();
+void sepol_full_rules();
+
+#endif

jni/include/resetprop.h

@@ -0,0 +1,23 @@
+/* resetprop.h - API for resetprop
+ */
+
+#ifndef _RESETPROP_H_
+#define _RESETPROP_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int prop_exist(const char *name);
+int setprop(const char *name, const char *value);
+int setprop2(const char *name, const char *value, const int trigger);
+char *getprop(const char *name);
+int deleteprop(const char *name, const int trigger);
+int read_prop_file(const char* filename, const int trigger);
+void getprop_all(void (*cbk)(const char *name));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

jni/include/utils.h

@@ -0,0 +1,108 @@
+/* util.h - Header for all utility functions
+ */
+
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+#include <stdio.h>
+#include <dirent.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+
+#include "vector.h"
+
+#define UID_SHELL  (get_shell_uid())
+#define UID_ROOT   0
+#define UID_SYSTEM (get_system_uid())
+#define UID_RADIO  (get_radio_uid())
+
+extern int quit_signals[];
+
+// xwrap.c
+
+FILE *xfopen(const char *pathname, const char *mode);
+FILE *xfdopen(int fd, const char *mode);
+#define GET_MACRO(_1, _2, _3, NAME, ...) NAME
+#define xopen(...) GET_MACRO(__VA_ARGS__, xopen3, xopen2)(__VA_ARGS__)
+int xopen2(const char *pathname, int flags);
+int xopen3(const char *pathname, int flags, mode_t mode);
+ssize_t xwrite(int fd, const void *buf, size_t count);
+ssize_t xread(int fd, void *buf, size_t count);
+ssize_t xxread(int fd, void *buf, size_t count);
+int xpipe2(int pipefd[2], int flags);
+int xsetns(int fd, int nstype);
+DIR *xopendir(const char *name);
+struct dirent *xreaddir(DIR *dirp);
+pid_t xsetsid();
+int xsocket(int domain, int type, int protocol);
+int xbind(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
+int xconnect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
+int xlisten(int sockfd, int backlog);
+int xaccept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
+void *xmalloc(size_t size);
+void *xcalloc(size_t nmemb, size_t size);
+void *xrealloc(void *ptr, size_t size);
+ssize_t xsendmsg(int sockfd, const struct msghdr *msg, int flags);
+ssize_t xrecvmsg(int sockfd, struct msghdr *msg, int flags);
+int xpthread_create(pthread_t *thread, const pthread_attr_t *attr,
+	void *(*start_routine) (void *), void *arg);
+int xsocketpair(int domain, int type, int protocol, int sv[2]);
+int xstat(const char *pathname, struct stat *buf);
+int xlstat(const char *pathname, struct stat *buf);
+int xdup2(int oldfd, int newfd);
+ssize_t xreadlink(const char *pathname, char *buf, size_t bufsiz);
+int xsymlink(const char *target, const char *linkpath);
+int xmount(const char *source, const char *target,
+	const char *filesystemtype, unsigned long mountflags,
+	const void *data);
+int xumount(const char *target);
+int xumount2(const char *target, int flags);
+int xchmod(const char *pathname, mode_t mode);
+int xrename(const char *oldpath, const char *newpath);
+int xmkdir(const char *pathname, mode_t mode);
+void *xmmap(void *addr, size_t length, int prot, int flags,
+	int fd, off_t offset);
+ssize_t xsendfile(int out_fd, int in_fd, off_t *offset, size_t count);
+int xmkdir_p(const char *pathname, mode_t mode);
+
+// misc.c
+
+unsigned get_shell_uid();
+unsigned get_system_uid();
+unsigned get_radio_uid();
+int check_data();
+int file_to_vector(const char* filename, struct vector *v);
+int vector_to_file(const char* filename, struct vector *v);
+ssize_t fdgets(char *buf, size_t size, int fd);
+void ps(void (*func)(int));
+void ps_filter_proc_name(const char *filter, void (*func)(int));
+void unlock_blocks();
+void setup_sighandlers(void (*handler)(int));
+int exec_command(int err, int *fd, void (*setupenv)(struct vector*), const char *argv0, ...);
+int exec_command_sync(char *const argv0, ...);
+int mkdir_p(const char *pathname, mode_t mode);
+int bind_mount(const char *from, const char *to);
+int open_new(const char *filename);
+int cp_afc(const char *source, const char *target);
+void fclone_attr(const int sourcefd, const int targetfd);
+void clone_attr(const char *source, const char *target);
+void get_client_cred(int fd, struct ucred *cred);
+int switch_mnt_ns(int pid);
+
+// img.c
+
+#define round_size(a) ((((a) / 32) + 2) * 32)
+#define SOURCE_TMP "/dev/source"
+#define TARGET_TMP "/dev/target"
+
+int create_img(const char *img, int size);
+int get_img_size(const char *img, int *used, int *total);
+int resize_img(const char *img, int size);
+char *mount_image(const char *img, const char *target);
+void umount_image(const char *target, const char *device);
+int merge_img(const char *source, const char *target);
+void trim_img(const char *img);
+
+#endif

jni/include/vector.h

@@ -0,0 +1,37 @@
+/* vector.h - A simple vector implementation in c
+ */
+
+#ifndef _VECTOR_H_
+#define _VECTOR_H_
+
+#include <sys/types.h>
+
+struct vector {
+	size_t size;
+	size_t cap;
+	void **data;
+};
+
+void vec_init(struct vector *v);
+void vec_push_back(struct vector *v, void *p);
+void *vec_pop_back(struct vector *v);
+void vec_sort(struct vector *v, int (*compar)(const void *, const void *));
+void vec_destroy(struct vector *v);
+void vec_deep_destroy(struct vector *v);
+struct vector *vec_dup(struct vector *v);
+
+#define vec_size(v) (v)->size
+#define vec_cap(v) (v)->cap
+#define vec_entry(v) (v)->data
+/* Usage: vec_for_each(vector *v, void *e) */
+#define vec_for_each(v, e) \
+	e = v ? (v)->data[0] : NULL; \
+	for (size_t _ = 0; v && _ < (v)->size; ++_, e = (v)->data[_])
+
+#define vec_for_each_r(v, e) \
+	e = v ? (v)->data[(v)->size - 1] : NULL; \
+	for (size_t _ = (v)->size; v && _ > 0; --_, e = (v)->data[_ - 1])
+
+#define vec_cur(v) vec_entry(v)[_]
+
+#endif

jni/magiskboot/boot_utils.c

@@ -0,0 +1,102 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/mman.h>
+
+#include "utils.h"
+
+void mmap_ro(const char *filename, void **buf, size_t *size) {
+	int fd = xopen(filename, O_RDONLY);
+	*size = lseek(fd, 0, SEEK_END);
+	lseek(fd, 0, SEEK_SET);
+	*buf = xmmap(NULL, *size, PROT_READ, MAP_SHARED, fd, 0);
+	close(fd);
+}
+
+void mmap_rw(const char *filename, void **buf, size_t *size) {
+	int fd = xopen(filename, O_RDWR);
+	*size = lseek(fd, 0, SEEK_END);
+	lseek(fd, 0, SEEK_SET);
+	*buf = xmmap(NULL, *size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	close(fd);
+}
+
+void write_zero(int fd, size_t size) {
+	size_t pos = lseek(fd, 0, SEEK_CUR);
+	ftruncate(fd, pos + size);
+	lseek(fd, pos + size, SEEK_SET);
+}
+
+void mem_align(size_t *pos, size_t align) {
+	size_t mask = align - 1;
+	if (*pos & mask) {
+		*pos += align - (*pos & mask);
+	}
+}
+
+void file_align(int fd, size_t align, int out) {
+	size_t pos = lseek(fd, 0, SEEK_CUR);
+	size_t mask = align - 1;
+	size_t off;
+	if (pos & mask) {
+		off = align - (pos & mask);
+		if (out) {
+			write_zero(fd, off);
+		} else {
+			lseek(fd, pos + off, SEEK_SET);
+		}
+	}
+}
+
+int open_new(const char *filename) {
+	return xopen(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+}
+
+void *patch_init_rc(char *data, uint32_t *size) {
+	int injected = 0;
+	char *new_data = xmalloc(*size + 23);
+	char *old_data = data;
+	uint32_t pos = 0;
+
+	for (char *tok = strsep(&old_data, "\n"); tok; tok = strsep(&old_data, "\n")) {
+		if (!injected && strncmp(tok, "import", 6) == 0) {
+			if (strstr(tok, "init.magisk.rc")) {
+				injected = 1;
+			} else {
+				fprintf(stderr, "Inject [import /init.magisk.rc] to [init.rc]\n");
+				strcpy(new_data + pos, "import /init.magisk.rc\n");
+				pos += 23;
+				injected = 1;
+			}
+		} else if (strstr(tok, "selinux.reload_policy")) {
+			continue;
+		}
+		// Copy the line
+		strcpy(new_data + pos, tok);
+		pos += strlen(tok);
+		new_data[pos++] = '\n';
+	}
+
+	*size = pos;
+	return new_data;
+}
+
+int check_verity_pattern(const char *s) {
+	int pos = 0;
+	if (s[0] == ',') ++pos;
+	if (strncmp(s + pos, "verify", 6) != 0) return -1;
+	pos += 6;
+	if (s[pos] == '=') {
+		while (s[pos] != '\0' && s[pos] != ' ' && s[pos] != '\n' && s[pos] != ',') ++pos;
+	}
+	return pos;
+}
+
+int check_encryption_pattern(const char *s) {
+	const char *encrypt_list[] = { "forceencrypt", "forcefdeorfbe", NULL };
+	for (int i = 0 ; encrypt_list[i]; ++i) {
+		int len = strlen(encrypt_list[i]);
+		if (strncmp(s, encrypt_list[i], len) == 0)
+			return len;
+	}
+	return -1;
+}

jni/magiskboot/bootimg.c

@@ -0,0 +1,311 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "bootimg.h"
+#include "magiskboot.h"
+#include "utils.h"
+#include "logging.h"
+
+static void dump(void *buf, size_t size, const char *filename) {
+	int fd = open_new(filename);
+	xwrite(fd, buf, size);
+	close(fd);
+}
+
+static size_t restore(const char *filename, int fd) {
+	int ifd = xopen(filename, O_RDONLY);
+	size_t size = lseek(ifd, 0, SEEK_END);
+	lseek(ifd, 0, SEEK_SET);
+	xsendfile(fd, ifd, NULL, size);
+	close(ifd);
+	return size;
+}
+
+static void restore_buf(int fd, const void *buf, size_t size) {
+	xwrite(fd, buf, size);
+}
+
+static void print_hdr(const boot_img_hdr *hdr) {
+	fprintf(stderr, "KERNEL [%d] @ 0x%08x\n", hdr->kernel_size, hdr->kernel_addr);
+	fprintf(stderr, "RAMDISK [%d] @ 0x%08x\n", hdr->ramdisk_size, hdr->ramdisk_addr);
+	fprintf(stderr, "SECOND [%d] @ 0x%08x\n", hdr->second_size, hdr->second_addr);
+	fprintf(stderr, "DTB [%d] @ 0x%08x\n", hdr->dt_size, hdr->tags_addr);
+	fprintf(stderr, "PAGESIZE [%d]\n", hdr->page_size);
+	if (hdr->os_version != 0) {
+		int a,b,c,y,m = 0;
+		int os_version, os_patch_level;
+		os_version = hdr->os_version >> 11;
+		os_patch_level = hdr->os_version & 0x7ff;
+
+		a = (os_version >> 14) & 0x7f;
+		b = (os_version >> 7) & 0x7f;
+		c = os_version & 0x7f;
+		fprintf(stderr, "OS_VERSION [%d.%d.%d]\n", a, b, c);
+
+		y = (os_patch_level >> 4) + 2000;
+		m = os_patch_level & 0xf;
+		fprintf(stderr, "PATCH_LEVEL [%d-%02d]\n", y, m);
+	}
+	fprintf(stderr, "NAME [%s]\n", hdr->name);
+	fprintf(stderr, "CMDLINE [%s]\n", hdr->cmdline);
+	fprintf(stderr, "\n");
+}
+
+int parse_img(void *orig, size_t size, boot_img *boot) {
+	void *base, *end;
+	size_t pos = 0;
+	int ret = 0;
+	memset(boot, 0, sizeof(*boot));
+	for(base = orig, end = orig + size; base < end; base += 256, size -= 256) {
+		switch (check_type(base)) {
+		case CHROMEOS:
+			// The caller should know it's chromeos, as it needs additional signing
+			ret = 2;
+			continue;
+		case ELF32:
+			exit(3);
+		case ELF64:
+			exit(4);
+		case AOSP:
+			// Read the header
+			memcpy(&boot->hdr, base, sizeof(boot->hdr));
+			pos += boot->hdr.page_size;
+
+			print_hdr(&boot->hdr);
+
+			boot->kernel = base + pos;
+			pos += boot->hdr.kernel_size;
+			mem_align(&pos, boot->hdr.page_size);
+
+			boot->ramdisk = base + pos;
+			pos += boot->hdr.ramdisk_size;
+			mem_align(&pos, boot->hdr.page_size);
+
+			if (boot->hdr.second_size) {
+				boot->second = base + pos;
+				pos += boot->hdr.second_size;
+				mem_align(&pos, boot->hdr.page_size);
+			}
+
+			if (boot->hdr.dt_size) {
+				boot->dtb = base + pos;
+				pos += boot->hdr.dt_size;
+				mem_align(&pos, boot->hdr.page_size);
+			}
+
+			if (pos < size) {
+				boot->extra = base + pos;
+			}
+
+			// Search for dtb in kernel if not found
+			if (boot->hdr.dt_size == 0) {
+				for (int i = 0; i < boot->hdr.kernel_size; ++i) {
+					if (memcmp(boot->kernel + i, DTB_MAGIC, 4) == 0) {
+						boot->flags |= APPEND_DTB;
+						boot->dtb = boot->kernel + i;
+						boot->hdr.dt_size = boot->hdr.kernel_size - i;
+						boot->hdr.kernel_size = i;
+						fprintf(stderr, "APPEND_DTB [%d]\n", boot->hdr.dt_size);
+					}
+				}
+			}
+
+			boot->ramdisk_type = check_type(boot->ramdisk);
+			boot->kernel_type = check_type(boot->kernel);
+
+			// Check MTK
+			if (boot->kernel_type == MTK) {
+				fprintf(stderr, "MTK_KERNEL_HDR [512]\n");
+				boot->flags |= MTK_KERNEL;
+				memcpy(&boot->mtk_kernel_hdr, boot->kernel, sizeof(mtk_hdr));
+				boot->kernel += 512;
+				boot->hdr.kernel_size -= 512;
+				boot->kernel_type = check_type(boot->kernel);
+			}
+			if (boot->ramdisk_type == MTK) {
+				fprintf(stderr, "MTK_RAMDISK_HDR [512]\n");
+				boot->flags |= MTK_RAMDISK;
+				memcpy(&boot->mtk_ramdisk_hdr, boot->ramdisk, sizeof(mtk_hdr));
+				boot->ramdisk += 512;
+				boot->hdr.ramdisk_size -= 512;
+				boot->ramdisk_type = check_type(boot->ramdisk + 512);
+			}
+
+			char fmt[16];
+
+			get_type_name(boot->kernel_type, fmt);
+			fprintf(stderr, "KERNEL_FMT [%s]\n", fmt);
+			get_type_name(boot->ramdisk_type, fmt);
+			fprintf(stderr, "RAMDISK_FMT [%s]\n", fmt);
+			fprintf(stderr, "\n");
+
+			return ret;
+		default:
+			continue;
+		}
+	}
+	LOGE("No boot image magic found!\n");
+}
+
+void unpack(const char* image) {
+	size_t size;
+	void *orig;
+	mmap_ro(image, &orig, &size);
+	int fd;
+	boot_img boot;
+
+	// Parse image
+	fprintf(stderr, "Parsing boot image: [%s]\n\n", image);
+	int ret = parse_img(orig, size, &boot);
+
+	// Dump kernel
+	if (boot.kernel_type == UNKNOWN) {
+		dump(boot.kernel, boot.hdr.kernel_size, KERNEL_FILE);
+	} else {
+		fd = open_new(KERNEL_FILE);
+		decomp(boot.kernel_type, fd, boot.kernel, boot.hdr.kernel_size);
+		close(fd);
+	}
+
+	// Dump ramdisk
+	if (boot.ramdisk_type == UNKNOWN) {
+		dump(boot.ramdisk, boot.hdr.ramdisk_size, RAMDISK_FILE ".raw");
+		LOGE("Unknown ramdisk format! Dumped to %s\n", RAMDISK_FILE ".raw");
+	} else {
+		fd = open_new(RAMDISK_FILE);
+		decomp(boot.ramdisk_type, fd, boot.ramdisk, boot.hdr.ramdisk_size);
+		close(fd);
+	}
+
+	if (boot.hdr.second_size) {
+		// Dump second
+		dump(boot.second, boot.hdr.second_size, SECOND_FILE);
+	}
+
+	if (boot.hdr.dt_size) {
+		// Dump dtb
+		dump(boot.dtb, boot.hdr.dt_size, DTB_FILE);
+	}
+
+	munmap(orig, size);
+	exit(ret);
+}
+
+void repack(const char* orig_image, const char* out_image) {
+	size_t size;
+	void *orig;
+	boot_img boot;
+
+	// There are possible two MTK headers
+	size_t mtk_kernel_off, mtk_ramdisk_off;
+
+	// Load original image
+	mmap_ro(orig_image, &orig, &size);
+
+	// Parse original image
+	fprintf(stderr, "Parsing boot image: [%s]\n\n", orig_image);
+	parse_img(orig, size, &boot);
+
+	fprintf(stderr, "Repack to boot image: [%s]\n\n", out_image);
+
+	// Create new image
+	int fd = open_new(out_image);
+
+	// Skip a page for header
+	write_zero(fd, boot.hdr.page_size);
+
+	if (boot.flags & MTK_KERNEL) {
+		// Record position and skip MTK header
+		mtk_kernel_off = lseek(fd, 0, SEEK_CUR);
+		write_zero(fd, 512);
+	}
+	if (boot.kernel_type == UNKNOWN) {
+		boot.hdr.kernel_size = restore(KERNEL_FILE, fd);
+	} else {
+		size_t raw_size;
+		void *kernel_raw;
+		mmap_ro(KERNEL_FILE, &kernel_raw, &raw_size);
+		boot.hdr.kernel_size = comp(boot.kernel_type, fd, kernel_raw, raw_size);
+		munmap(kernel_raw, raw_size);
+	}
+	if (boot.flags & APPEND_DTB) {
+		boot.hdr.kernel_size += restore(DTB_FILE, fd);
+		boot.hdr.dt_size = 0;
+	}
+	file_align(fd, boot.hdr.page_size, 1);
+
+	if (boot.flags & MTK_RAMDISK) {
+		// Record position and skip MTK header
+		mtk_ramdisk_off = lseek(fd, 0, SEEK_CUR);
+		write_zero(fd, 512);
+	}
+	if (access(RAMDISK_FILE, R_OK) == 0) {
+		// If we found raw cpio, compress to original format
+		size_t cpio_size;
+		void *cpio;
+		mmap_ro(RAMDISK_FILE, &cpio, &cpio_size);
+		boot.hdr.ramdisk_size = comp(boot.ramdisk_type, fd, cpio, cpio_size);
+		munmap(cpio, cpio_size);
+	} else {
+		// Find compressed ramdisk
+		char name[PATH_MAX];
+		int found = 0;
+		for (int i = 0; SUP_EXT_LIST[i]; ++i) {
+			sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
+			if (access(name, R_OK) == 0) {
+				found = 1;
+				break;
+			}
+		}
+		if (!found)
+			LOGE("No ramdisk exists!\n");
+		boot.hdr.ramdisk_size = restore(name, fd);
+	}
+	file_align(fd, boot.hdr.page_size, 1);
+
+	// Restore second
+	if (boot.hdr.second_size && access(SECOND_FILE, R_OK) == 0) {
+		boot.hdr.second_size = restore(SECOND_FILE, fd);
+		file_align(fd, boot.hdr.page_size, 1);
+	}
+
+	// Restore dtb
+	if (boot.hdr.dt_size && access(DTB_FILE, R_OK) == 0) {
+		printf("Here\n");
+		boot.hdr.dt_size = restore(DTB_FILE, fd);
+		file_align(fd, boot.hdr.page_size, 1);
+	}
+
+	// Check extra info, currently only for LG Bump and Samsung SEANDROIDENFORCE
+	if (boot.extra) {
+		if (memcmp(boot.extra, "SEANDROIDENFORCE", 16) == 0 ||
+			memcmp(boot.extra, LG_BUMP_MAGIC, 16) == 0 ) {
+			restore_buf(fd, boot.extra, 16);
+		}
+	}
+
+	// Write MTK headers back
+	if (boot.flags & MTK_KERNEL) {
+		lseek(fd, mtk_kernel_off, SEEK_SET);
+		boot.mtk_kernel_hdr.size = boot.hdr.kernel_size;
+		boot.hdr.kernel_size += 512;
+		restore_buf(fd, &boot.mtk_kernel_hdr, sizeof(mtk_hdr));
+	}
+	if (boot.flags & MTK_RAMDISK) {
+		lseek(fd, mtk_ramdisk_off, SEEK_SET);
+		boot.mtk_ramdisk_hdr.size = boot.hdr.ramdisk_size;
+		boot.hdr.ramdisk_size += 512;
+		restore_buf(fd, &boot.mtk_ramdisk_hdr, sizeof(mtk_hdr));
+	}
+	// Main header
+	lseek(fd, 0, SEEK_SET);
+	restore_buf(fd, &boot.hdr, sizeof(boot.hdr));
+
+	// Print new image info
+	print_hdr(&boot.hdr);
+
+	munmap(orig, size);
+	close(fd);
+}
+

jni/magiskboot/bootimg.h

@@ -2,20 +2,21 @@
 **
 ** Copyright 2007, The Android Open Source Project
 **
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
 **
-**     http://www.apache.org/licenses/LICENSE-2.0 
+**     http://www.apache.org/licenses/LICENSE-2.0
 **
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
 ** limitations under the License.
 */
 
 #include <stdint.h>
+#include "types.h"
 
 #ifndef _BOOT_IMAGE_H_
 #define _BOOT_IMAGE_H_
@@ -43,7 +44,14 @@ struct boot_img_hdr
 
     uint32_t tags_addr;    /* physical addr for kernel tags */
     uint32_t page_size;    /* flash page size we assume */
-    uint32_t unused[2];    /* future expansion: should be 0 */
+    uint32_t dt_size;      /* device tree in bytes */
+
+    /* operating system version and security patch level; for
+     * version "A.B.C" and patch level "Y-M-D":
+     * ver = A << 14 | B << 7 | C         (7 bits for each of A, B, C)
+     * lvl = ((Y - 2000) & 127) << 4 | M  (7 bits for Y, 4 bits for M)
+     * os_version = ver << 11 | lvl */
+    uint32_t os_version;
 
     uint8_t name[BOOT_NAME_SIZE]; /* asciiz product name */
 
@@ -57,19 +65,22 @@ struct boot_img_hdr
 } __attribute__((packed));
 
 /*
-** +-----------------+ 
+** +-----------------+
 ** | boot header     | 1 page
 ** +-----------------+
-** | kernel          | n pages  
+** | kernel          | n pages
 ** +-----------------+
-** | ramdisk         | m pages  
+** | ramdisk         | m pages
 ** +-----------------+
 ** | second stage    | o pages
 ** +-----------------+
+** | device tree     | p pages
+** +-----------------+
 **
 ** n = (kernel_size + page_size - 1) / page_size
 ** m = (ramdisk_size + page_size - 1) / page_size
 ** o = (second_size + page_size - 1) / page_size
+** p = (dt_size + page_size - 1) / page_size
 **
 ** 0. all entities are page_size aligned in flash
 ** 1. kernel and ramdisk are required (size != 0)
@@ -83,8 +94,27 @@ struct boot_img_hdr
 **    else: jump to kernel_addr
 */
 
-int extract(char *image);
-int repack(char *image);
-int hexpatch(char *image, char *from, char *to);
+typedef struct mtk_hdr {
+   uint8_t magic[4];    /* MTK magic */
+   uint32_t size;       /* Size of the content */
+   uint8_t name[32];    /* The type of the header */
+} mtk_hdr;
+
+// Flags
+#define MTK_KERNEL    0x1
+#define MTK_RAMDISK   0x2
+#define APPEND_DTB    0x4
+
+typedef struct boot_img {
+    boot_img_hdr hdr;
+    void *kernel;
+    void *ramdisk;
+    void *second;
+    void *dtb;
+    void *extra;
+    int flags;
+    file_t kernel_type, ramdisk_type;
+    mtk_hdr mtk_kernel_hdr, mtk_ramdisk_hdr;
+} boot_img;
 
 #endif

jni/magiskboot/compress.c

@@ -0,0 +1,542 @@
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include <zlib.h>
+#include <lzma.h>
+#include <lz4.h>
+#include <lz4frame.h>
+#include <bzlib.h>
+
+#include "magiskboot.h"
+#include "logging.h"
+#include "utils.h"
+
+#define windowBits 15
+#define ZLIB_GZIP 16
+#define memLevel 8
+#define CHUNK 0x40000
+
+#define LZ4_HEADER_SIZE 19
+#define LZ4_FOOTER_SIZE 4
+#define LZ4_LEGACY_BLOCKSIZE  0x800000
+
+// Mode: 0 = decode; 1 = encode
+size_t gzip(int mode, int fd, const void *buf, size_t size) {
+	size_t ret = 0, flush, have, pos = 0, total = 0;
+	z_stream strm;
+	unsigned char out[CHUNK];
+
+	strm.zalloc = Z_NULL;
+	strm.zfree = Z_NULL;
+	strm.opaque = Z_NULL;
+
+	switch(mode) {
+		case 0:
+			ret = inflateInit2(&strm, windowBits | ZLIB_GZIP);
+			break;
+		case 1:
+			ret = deflateInit2(&strm, 9, Z_DEFLATED, windowBits | ZLIB_GZIP, memLevel, Z_DEFAULT_STRATEGY);
+			break;
+		default:
+			LOGE("Unsupported gzip mode!\n");
+	}
+
+	if (ret != Z_OK)
+		LOGE("Unable to init zlib stream\n");
+
+	do {
+		strm.next_in = buf + pos;
+		if (pos + CHUNK >= size) {
+			strm.avail_in = size - pos;
+			flush = Z_FINISH;
+		} else {
+			strm.avail_in = CHUNK;
+			flush = Z_NO_FLUSH;
+		}
+		pos += strm.avail_in;
+
+		do {
+			strm.avail_out = CHUNK;
+			strm.next_out = out;
+			switch(mode) {
+				case 0:
+					ret = inflate(&strm, flush);
+					break;
+				case 1:
+					ret = deflate(&strm, flush);
+					break;
+			}
+			if (ret == Z_STREAM_ERROR)
+				LOGE("Error when running gzip\n");
+
+			have = CHUNK - strm.avail_out;
+			total += xwrite(fd, out, have);
+
+		} while (strm.avail_out == 0);
+
+	} while(pos < size);
+
+	switch(mode) {
+		case 0:
+			inflateEnd(&strm);
+			break;
+		case 1:
+			deflateEnd(&strm);
+			break;
+	}
+	return total;
+}
+
+
+// Mode: 0 = decode xz/lzma; 1 = encode xz; 2 = encode lzma
+size_t lzma(int mode, int fd, const void *buf, size_t size) {
+	size_t have, pos = 0, total = 0;
+	lzma_ret ret = 0;
+	lzma_stream strm = LZMA_STREAM_INIT;
+	lzma_options_lzma opt;
+	lzma_action action;
+	unsigned char out[BUFSIZ];
+
+	// Initialize preset
+	lzma_lzma_preset(&opt, LZMA_PRESET_DEFAULT);
+	lzma_filter filters[] = {
+		{ .id = LZMA_FILTER_LZMA2, .options = &opt },
+		{ .id = LZMA_VLI_UNKNOWN, .options = NULL },
+	};
+
+	switch(mode) {
+		case 0:
+			ret = lzma_auto_decoder(&strm, UINT64_MAX, 0);
+			break;
+		case 1:
+			ret = lzma_stream_encoder(&strm, filters, LZMA_CHECK_CRC32);
+			break;
+		case 2:
+			ret = lzma_alone_encoder(&strm, &opt);
+			break;
+		default:
+			LOGE("Unsupported lzma mode!\n");
+	}
+
+
+	if (ret != LZMA_OK)
+		LOGE("Unable to init lzma stream\n");
+
+	do {
+		strm.next_in = buf + pos;
+		if (pos + BUFSIZ >= size) {
+			strm.avail_in = size - pos;
+			action = LZMA_FINISH;
+		} else {
+			strm.avail_in = BUFSIZ;
+			action = LZMA_RUN;
+		}
+		pos += strm.avail_in;
+
+		do {
+			strm.avail_out = BUFSIZ;
+			strm.next_out = out;
+			ret = lzma_code(&strm, action);
+			have = BUFSIZ - strm.avail_out;
+			total += xwrite(fd, out, have);
+		} while (strm.avail_out == 0 && ret == LZMA_OK);
+
+		if (ret != LZMA_OK && ret != LZMA_STREAM_END)
+			LOGE("LZMA error %d!\n", ret);
+
+	} while (pos < size);
+
+	lzma_end(&strm);
+	return total;
+}
+
+// Mode: 0 = decode; 1 = encode
+size_t lz4(int mode, int fd, const void *buf, size_t size) {
+	LZ4F_decompressionContext_t dctx;
+	LZ4F_compressionContext_t cctx;
+	LZ4F_frameInfo_t info;
+
+	size_t blockSize, outCapacity, avail_in, ret = 0, pos = 0, total = 0;
+	size_t have, read;
+	void *out = NULL;
+
+	// Initialize context
+	switch(mode) {
+		case 0:
+			ret = LZ4F_createDecompressionContext(&dctx, LZ4F_VERSION);
+			break;
+		case 1:
+			ret = LZ4F_createCompressionContext(&cctx, LZ4F_VERSION);
+			break;
+		default:
+			LOGE("Unsupported lz4 mode!\n");
+	}
+
+	if (LZ4F_isError(ret))
+		LOGE("Context creation error: %s\n", LZ4F_getErrorName(ret));
+
+	// Allocate out buffer
+	blockSize = 1 << 22;
+	switch(mode) {
+		case 0:
+			// Read header
+			read = blockSize;
+			ret = LZ4F_getFrameInfo(dctx, &info, buf, &read);
+			if (LZ4F_isError(ret))
+				LOGE("LZ4F_getFrameInfo error: %s\n", LZ4F_getErrorName(ret));
+			switch (info.blockSizeID) {
+				case LZ4F_default:
+				case LZ4F_max64KB:  outCapacity = 1 << 16; break;
+				case LZ4F_max256KB: outCapacity = 1 << 18; break;
+				case LZ4F_max1MB:   outCapacity = 1 << 20; break;
+				case LZ4F_max4MB:   outCapacity = 1 << 22; break;
+				default:
+					LOGE("Impossible unless more block sizes are allowed\n");
+			}
+			pos += read;
+			break;
+		case 1:
+			outCapacity = LZ4F_compressFrameBound(blockSize, NULL);
+			break;
+	}
+
+	out = xmalloc(outCapacity);
+
+	// Write header
+	if (mode == 1) {
+		LZ4F_preferences_t prefs;
+		memset(&prefs, 0, sizeof(prefs));
+		prefs.autoFlush = 1;
+		prefs.compressionLevel = 9;
+		prefs.frameInfo.blockMode = 1;
+		prefs.frameInfo.blockSizeID = 7;
+		prefs.frameInfo.contentChecksumFlag = 1;
+		have = ret = LZ4F_compressBegin(cctx, out, size, &prefs);
+		if (LZ4F_isError(ret))
+			LOGE("Failed to start compression: error %s\n", LZ4F_getErrorName(ret));
+		total += xwrite(fd, out, have);
+	}
+
+	do {
+		if (pos + blockSize >= size) {
+			avail_in = size - pos;
+		} else {
+			avail_in = blockSize;
+		}
+
+		do {
+			switch(mode) {
+				case 0:
+					have = outCapacity;
+					read = avail_in;
+					ret = LZ4F_decompress(dctx, out, &have, buf + pos, &read, NULL);
+					break;
+				case 1:
+					read = avail_in;
+					have = ret = LZ4F_compressUpdate(cctx, out, outCapacity, buf + pos, avail_in, NULL);
+					break;
+			}
+			if (LZ4F_isError(ret))
+				LOGE("LZ4 coding error: %s\n", LZ4F_getErrorName(ret));
+
+			total += xwrite(fd, out, have);
+			// Update status
+			pos += read;
+			avail_in -= read;
+		} while(avail_in != 0 && ret != 0);
+
+	} while(pos < size && ret != 0);
+
+	switch(mode) {
+		case 0:
+			LZ4F_freeDecompressionContext(dctx);
+			break;
+		case 1:
+			have = ret = LZ4F_compressEnd(cctx, out, outCapacity, NULL);
+			if (LZ4F_isError(ret))
+				LOGE("Failed to end compression: error %s\n", LZ4F_getErrorName(ret));
+
+			total += xwrite(fd, out, have);
+
+			LZ4F_freeCompressionContext(cctx);
+			break;
+	}
+
+	free(out);
+	return total;
+}
+
+// Mode: 0 = decode; 1 = encode
+size_t bzip2(int mode, int fd, const void* buf, size_t size) {
+	size_t ret = 0, action, have, pos = 0, total = 0;
+	bz_stream strm;
+	char out[CHUNK];
+
+	strm.bzalloc = NULL;
+	strm.bzfree = NULL;
+	strm.opaque = NULL;
+
+	switch(mode) {
+		case 0:
+			ret = BZ2_bzDecompressInit(&strm, 0, 0);
+			break;
+		case 1:
+			ret = BZ2_bzCompressInit(&strm, 9, 0, 0);
+			break;
+		default:
+			LOGE("Unsupported bzip2 mode!\n");
+	}
+
+	if (ret != BZ_OK)
+		LOGE("Unable to init bzlib stream\n");
+
+	do {
+		strm.next_in = (char *) buf + pos;
+		if (pos + CHUNK >= size) {
+			strm.avail_in = size - pos;
+			action = BZ_FINISH;
+		} else {
+			strm.avail_in = CHUNK;
+			action = BZ_RUN;
+		}
+		pos += strm.avail_in;
+
+		do {
+			strm.avail_out = CHUNK;
+			strm.next_out = out;
+			switch(mode) {
+				case 0:
+					ret = BZ2_bzDecompress(&strm);
+					break;
+				case 1:
+					ret = BZ2_bzCompress(&strm, action);
+					break;
+			}
+
+			have = CHUNK - strm.avail_out;
+			total += xwrite(fd, out, have);
+
+		} while (strm.avail_out == 0);
+
+	} while(pos < size);
+
+	switch(mode) {
+		case 0:
+			BZ2_bzDecompressEnd(&strm);
+			break;
+		case 1:
+			BZ2_bzCompressEnd(&strm);
+			break;
+	}
+	return total;
+}
+
+// Mode: 0 = decode; 1 = encode
+size_t lz4_legacy(int mode, int fd, const void* buf, size_t size) {
+	size_t pos = 0, total = 0;
+	int have;
+	char *out;
+	unsigned block_size, insize;
+	unsigned char block_size_le[4];
+
+	switch(mode) {
+		case 0:
+			out = xmalloc(LZ4_LEGACY_BLOCKSIZE);
+			// Skip magic
+			pos += 4;
+			break;
+		case 1:
+			out = xmalloc(LZ4_COMPRESSBOUND(LZ4_LEGACY_BLOCKSIZE));
+			// Write magic
+			total += xwrite(fd, "\x02\x21\x4c\x18", 4);
+			break;
+		default:
+			LOGE("Unsupported lz4_legacy mode!\n");
+	}
+
+	do {
+		const char *buff = buf;
+		switch(mode) {
+			case 0:
+				block_size = buff[pos];
+				block_size += (buff[pos + 1]<<8);
+				block_size += (buff[pos + 2]<<16);
+				block_size += ((unsigned)buff[pos + 3])<<24;
+				pos += 4;
+				if (block_size > LZ4_COMPRESSBOUND(LZ4_LEGACY_BLOCKSIZE))
+					LOGE("lz4_legacy block size too large!\n");
+				have = LZ4_decompress_safe((const char*) (buf + pos), out, block_size, LZ4_LEGACY_BLOCKSIZE);
+				if (have < 0)
+					LOGE("Cannot decode lz4_legacy block\n");
+				pos += block_size;
+				break;
+			case 1:
+				if (pos + LZ4_LEGACY_BLOCKSIZE >= size)
+					insize = size - pos;
+				else
+					insize = LZ4_LEGACY_BLOCKSIZE;
+				have = LZ4_compress_default((const char*) (buf + pos), out, insize, LZ4_COMPRESSBOUND(LZ4_LEGACY_BLOCKSIZE));
+				if (have == 0)
+					LOGE("lz4_legacy compression error\n");
+				pos += insize;
+				block_size_le[0] = have & 0xff;
+				block_size_le[1] = (have >> 8) & 0xff;
+				block_size_le[2] = (have >> 16) & 0xff;
+				block_size_le[3] = (have >> 24) & 0xff;
+				total += xwrite(fd, block_size_le, 4);
+				break;
+		}
+		// Write main data
+		total += xwrite(fd, out, have);
+	} while(pos < size);
+
+	free(out);
+	return total;
+}
+
+long long decomp(file_t type, int to, const void *from, size_t size) {
+	switch (type) {
+		case GZIP:
+			return gzip(0, to, from, size);
+		case XZ:
+			return lzma(0, to, from, size);
+		case LZMA:
+			return lzma(0, to, from, size);
+		case BZIP2:
+			return bzip2(0, to, from, size);
+		case LZ4:
+			return lz4(0, to, from, size);
+		case LZ4_LEGACY:
+			return lz4_legacy(0, to, from, size);
+		default:
+			// Unsupported
+			return -1;
+	}
+}
+
+// Output will be to.ext
+long long comp(file_t type, int to, const void *from, size_t size) {
+	switch (type) {
+		case GZIP:
+			return gzip(1, to, from, size);
+		case XZ:
+			return lzma(1, to, from, size);
+		case LZMA:
+			return lzma(2, to, from, size);
+		case BZIP2:
+			return bzip2(1, to, from, size);
+		case LZ4:
+			return lz4(1, to, from, size);
+		case LZ4_LEGACY:
+			return lz4_legacy(1, to, from, size);
+		default:
+			// Unsupported
+			return -1;
+	}
+}
+
+/*
+ * Below are utility functions for commandline
+ */
+
+void decomp_file(char *from, const char *to) {
+	int ok = 1;
+	void *file;
+	size_t size;
+	mmap_ro(from, &file, &size);
+	file_t type = check_type(file);
+	char *ext;
+	ext = strrchr(from, '.');
+	if (ext == NULL)
+		LOGE("Bad filename extention\n");
+
+	// File type and extension should match
+	switch (type) {
+		case GZIP:
+			if (strcmp(ext, ".gz") != 0)
+				ok = 0;
+			break;
+		case XZ:
+			if (strcmp(ext, ".xz") != 0)
+				ok = 0;
+			break;
+		case LZMA:
+			if (strcmp(ext, ".lzma") != 0)
+				ok = 0;
+			break;
+		case BZIP2:
+			if (strcmp(ext, ".bz2") != 0)
+				ok = 0;
+			break;
+		case LZ4_LEGACY:
+		case LZ4:
+			if (strcmp(ext, ".lz4") != 0)
+				ok = 0;
+			break;
+		default:
+			LOGE("Provided file \'%s\' is not a supported archive format\n", from);
+	}
+	if (ok) {
+		// If all match, strip out the suffix
+		if (!to) {
+			*ext = '\0';
+			to = from;
+		}
+		int fd = open_new(to);
+		fprintf(stderr, "Decompressing to [%s]\n\n", to);
+		decomp(type, fd, file, size);
+		close(fd);
+		if (to == from) {
+			*ext = '.';
+			unlink(from);
+		}
+	} else {
+		LOGE("Bad filename extention \'%s\'\n", ext);
+	}
+	munmap(file, size);
+}
+
+void comp_file(const char *method, const char *from, const char *to) {
+	file_t type;
+	char *ext, dest[PATH_MAX];
+	if (strcmp(method, "gzip") == 0) {
+		type = GZIP;
+		ext = "gz";
+	} else if (strcmp(method, "xz") == 0) {
+		type = XZ;
+		ext = "xz";
+	} else if (strcmp(method, "lzma") == 0) {
+		type = LZMA;
+		ext = "lzma";
+	} else if (strcmp(method, "lz4") == 0) {
+		type = LZ4;
+		ext = "lz4";
+	} else if (strcmp(method, "lz4_legacy") == 0) {
+		type = LZ4_LEGACY;
+		ext = "lz4";
+	} else if (strcmp(method, "bzip2") == 0) {
+		type = BZIP2;
+		ext = "bz2";
+	} else {
+		fprintf(stderr, "Only support following methods: ");
+		for (int i = 0; SUP_LIST[i]; ++i)
+			fprintf(stderr, "%s ", SUP_LIST[i]);
+		fprintf(stderr, "\n");
+		exit(1);
+	}
+	void *file;
+	size_t size;
+	mmap_ro(from, &file, &size);
+	if (!to)
+		snprintf(dest, sizeof(dest), "%s.%s", from, ext);
+	else
+		strcpy(dest, to);
+	fprintf(stderr, "Compressing to [%s]\n\n", dest);
+	int fd = open_new(dest);
+	comp(type, fd, file, size);
+	close(fd);
+	munmap(file, size);
+	if (!to)
+		unlink(from);
+}
+

jni/magiskboot/cpio.c

@@ -0,0 +1,507 @@
+#include <stdio.h>
+#include <unistd.h>
+
+#include "magiskboot.h"
+#include "cpio.h"
+#include "logging.h"
+#include "utils.h"
+
+static uint32_t x8u(char *hex) {
+  uint32_t val, inpos = 8, outpos;
+  char pattern[6];
+
+  while (*hex == '0') {
+    hex++;
+    if (!--inpos) return 0;
+  }
+  // Because scanf gratuitously treats %*X differently than printf does.
+  sprintf(pattern, "%%%dx%%n", inpos);
+  sscanf(hex, pattern, &val, &outpos);
+  if (inpos != outpos) LOGE("bad cpio header\n");
+
+  return val;
+}
+
+static void cpio_free(cpio_entry *f) {
+	if (f) {
+		free(f->filename);
+		free(f->data);
+		free(f);
+	}
+}
+
+static void cpio_vec_insert(struct vector *v, cpio_entry *n) {
+	cpio_entry *f;
+	vec_for_each(v, f) {
+		if (strcmp(f->filename, n->filename) == 0) {
+			// Replace, then all is done
+			cpio_free(f);
+			vec_cur(v) = n;
+			return;
+		}
+	}
+	vec_push_back(v, n);
+}
+
+static int cpio_cmp(const void *a, const void *b) {
+	return strcmp((*(cpio_entry **) a)->filename, (*(cpio_entry **) b)->filename);
+}
+
+// Parse cpio file to a vector of cpio_entry
+static void parse_cpio(const char *filename, struct vector *v) {
+	fprintf(stderr, "Loading cpio: [%s]\n\n", filename);
+	int fd = xopen(filename, O_RDONLY);
+	cpio_newc_header header;
+	cpio_entry *f;
+	while(xxread(fd, &header, 110) != -1) {
+		f = xcalloc(sizeof(*f), 1);
+		// f->ino = x8u(header.ino);
+		f->mode = x8u(header.mode);
+		f->uid = x8u(header.uid);
+		f->gid = x8u(header.gid);
+		// f->nlink = x8u(header.nlink);
+		// f->mtime = x8u(header.mtime);
+		f->filesize = x8u(header.filesize);
+		// f->devmajor = x8u(header.devmajor);
+		// f->devminor = x8u(header.devminor);
+		// f->rdevmajor = x8u(header.rdevmajor);
+		// f->rdevminor = x8u(header.rdevminor);
+		f->namesize = x8u(header.namesize);
+		// f->check = x8u(header.check);
+		f->filename = xmalloc(f->namesize);
+		xxread(fd, f->filename, f->namesize);
+		file_align(fd, 4, 0);
+		if (strcmp(f->filename, ".") == 0 || strcmp(f->filename, "..") == 0) {
+			cpio_free(f);
+			continue;
+		}
+		if (strcmp(f->filename, "TRAILER!!!") == 0) {
+			cpio_free(f);
+			break;
+		}
+		if (f->filesize) {
+			f->data = malloc(f->filesize);
+			xxread(fd, f->data, f->filesize);
+			file_align(fd, 4, 0);
+		}
+		vec_push_back(v, f);
+	}
+	close(fd);
+}
+
+static void dump_cpio(const char *filename, struct vector *v) {
+	fprintf(stderr, "\nDump cpio: [%s]\n\n", filename);
+	int fd = open_new(filename);
+	unsigned inode = 300000;
+	char header[111];
+	// Sort by name
+	vec_sort(v, cpio_cmp);
+	cpio_entry *f;
+	vec_for_each(v, f) {
+		if (f->remove) continue;
+		sprintf(header, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x",
+			inode++,	// f->ino
+			f->mode,
+			f->uid,
+			f->gid,
+			1,			// f->nlink
+			0,			// f->mtime
+			f->filesize,
+			0,			// f->devmajor
+			0,			// f->devminor
+			0,			// f->rdevmajor
+			0,			// f->rdevminor
+			f->namesize,
+			0			// f->check
+		);
+		xwrite(fd, header, 110);
+		xwrite(fd, f->filename, f->namesize);
+		file_align(fd, 4, 1);
+		if (f->filesize) {
+			xwrite(fd, f->data, f->filesize);
+			file_align(fd, 4, 1);
+		}
+	}
+	// Write trailer
+	sprintf(header, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x", inode++, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 11, 0);
+	xwrite(fd, header, 110);
+	xwrite(fd, "TRAILER!!!\0", 11);
+	file_align(fd, 4, 1);
+	close(fd);
+}
+
+static void cpio_vec_destroy(struct vector *v) {
+	// Free each cpio_entry
+	cpio_entry *f;
+	vec_for_each(v, f) {
+		cpio_free(f);
+	}
+	vec_destroy(v);
+}
+
+static void cpio_rm(int recursive, const char *entry, struct vector *v) {
+	cpio_entry *f;
+	vec_for_each(v, f) {
+		if (strncmp(f->filename, entry, strlen(entry)) == 0) {
+			char next = f->filename[strlen(entry)];
+			if ((recursive && next == '/') || next == '\0') {
+				if (!f->remove) {
+					fprintf(stderr, "Remove [%s]\n", f->filename);
+					f->remove = 1;
+				}
+				if (!recursive) return;
+			}
+		}
+	}
+}
+
+static void cpio_mkdir(mode_t mode, const char *entry, struct vector *v) {
+	cpio_entry *f = xcalloc(sizeof(*f), 1);
+	f->mode = S_IFDIR | mode;
+	f->namesize = strlen(entry) + 1;
+	f->filename = strdup(entry);
+	cpio_vec_insert(v, f);
+	fprintf(stderr, "Create directory [%s] (%04o)\n",entry, mode);
+}
+
+static void cpio_add(mode_t mode, const char *entry, const char *filename, struct vector *v) {
+	int fd = xopen(filename, O_RDONLY);
+	cpio_entry *f = xcalloc(sizeof(*f), 1);
+	f->mode = S_IFREG | mode;
+	f->namesize = strlen(entry) + 1;
+	f->filename = strdup(entry);
+	f->filesize = lseek(fd, 0, SEEK_END);
+	lseek(fd, 0, SEEK_SET);
+	f->data = xmalloc(f->filesize);
+	xxread(fd, f->data, f->filesize);
+	close(fd);
+	cpio_vec_insert(v, f);
+	fprintf(stderr, "Add entry [%s] (%04o)\n", entry, mode);
+}
+
+static void cpio_test(struct vector *v) {
+	#define STOCK_BOOT      0x0
+	#define MAGISK_PATCH    0x1
+	#define OTHER_PATCH     0x2
+	int ret = STOCK_BOOT;
+	cpio_entry *f;
+	const char *OTHER_LIST[] = { "sbin/launch_daemonsu.sh", "sbin/su", "init.xposed.rc", "boot/sbin/launch_daemonsu.sh", NULL };
+	const char *MAGISK_LIST[] = { "init.magisk.rc", "overlay/init.magisk.rc", NULL };
+	vec_for_each(v, f) {
+		for (int i = 0; OTHER_LIST[i]; ++i) {
+			if (strcmp(f->filename, OTHER_LIST[i]) == 0) {
+				ret |= OTHER_PATCH;
+				// Already find other files, abort
+				exit(OTHER_PATCH);
+			}
+		}
+		for (int i = 0; MAGISK_LIST[i]; ++i) {
+			if (strcmp(f->filename, MAGISK_LIST[i]) == 0)
+				ret = MAGISK_PATCH;
+		}
+	}
+	cpio_vec_destroy(v);
+	exit(ret);
+}
+
+static void cpio_patch(struct vector *v, int keepverity, int keepforceencrypt) {
+	cpio_entry *f;
+	int skip, write;
+	vec_for_each(v, f) {
+		if (strcmp(f->filename, "init.rc") == 0) {
+			void *new_data = patch_init_rc(f->data, &f->filesize);
+			free(f->data);
+			f->data = new_data;
+		} else {
+			if (!keepverity) {
+				if (strstr(f->filename, "fstab") != NULL && S_ISREG(f->mode)) {
+					write = 0;
+					for (int read = 0; read < f->filesize; ++write, ++read) {
+						if ((skip = check_verity_pattern(f->data + read)) > 0) {
+							fprintf(stderr, "Remove pattern [%.*s] in [%s]\n", skip, f->data + read, f->filename);
+							read += skip;
+						}
+						f->data[write] = f->data[read];
+					}
+					f->filesize = write;
+				} else if (strcmp(f->filename, "verity_key") == 0) {
+					fprintf(stderr, "Remove [verity_key]\n");
+					f->remove = 1;
+				}
+			}
+			if (!keepforceencrypt) {
+				if (strstr(f->filename, "fstab") != NULL && S_ISREG(f->mode)) {
+					write = 0;
+					for (int read = 0; read < f->filesize; ++write, ++read) {
+						if ((skip = check_encryption_pattern(f->data + read)) > 0) {
+							// assert(skip > 11)!
+							fprintf(stderr, "Replace pattern [%.*s] with [encryptable] in [%s]\n", skip, f->data + read, f->filename);
+							memcpy(f->data + write, "encryptable", 11);
+							write += 11;
+							read += skip;
+						}
+						f->data[write] = f->data[read];
+					}
+					f->filesize = write;
+				}
+			}
+		}
+	}
+}
+
+static void cpio_extract(const char *entry, const char *filename, struct vector *v) {
+	cpio_entry *f;
+	vec_for_each(v, f) {
+		if (strcmp(f->filename, entry) == 0 && S_ISREG(f->mode)) {
+			fprintf(stderr, "Extracting [%s] to [%s]\n\n", entry, filename);
+			int fd = open_new(filename);
+			xwrite(fd, f->data, f->filesize);
+			fchmod(fd, f->mode);
+			fchown(fd, f->uid, f->gid);
+			close(fd);
+			exit(0);
+		}
+	}
+	LOGE("Cannot find the file entry [%s]\n", entry);
+}
+
+static void cpio_backup(const char *orig, struct vector *v) {
+	struct vector o_body, *o = &o_body, bak;
+	cpio_entry *m, *n, *dir, *rem;
+	char buf[PATH_MAX];
+	int res, doBak;
+
+	dir = xcalloc(sizeof(*dir), 1);
+	rem = xcalloc(sizeof(*rem), 1);
+	vec_init(o);
+	vec_init(&bak);
+	// First push back the directory and the rmlist
+	vec_push_back(&bak, dir);
+	vec_push_back(&bak, rem);
+	parse_cpio(orig, o);
+	// Remove possible backups in original ramdisk
+	cpio_rm(1, ".backup", o);
+	cpio_rm(1, ".backup", v);
+
+	// Sort both vectors before comparing
+	vec_sort(v, cpio_cmp);
+	vec_sort(o, cpio_cmp);
+
+	// Init the directory and rmlist
+	dir->filename = strdup(".backup");
+	dir->namesize = strlen(dir->filename) + 1;
+	dir->mode = S_IFDIR;
+	rem->filename = strdup(".backup/.rmlist");
+	rem->namesize = strlen(rem->filename) + 1;
+	rem->mode = S_IFREG;
+
+	// Start comparing
+	size_t i = 0, j = 0;
+	while(i != vec_size(o) || j != vec_size(v)) {
+		doBak = 0;
+		if (i != vec_size(o) && j != vec_size(v)) {
+			m = vec_entry(o)[i];
+			n = vec_entry(v)[j];
+			res = strcmp(m->filename, n->filename);
+		} else if (i == vec_size(o)) {
+			n = vec_entry(v)[j];
+			res = 1;
+		} else if (j == vec_size(v)) {
+			m = vec_entry(o)[i];
+			res = -1;
+		}
+
+		if (res < 0) {
+			// Something is missing in new ramdisk, backup!
+			++i;
+			doBak = 1;
+			fprintf(stderr, "Backup missing entry: ");
+		} else if (res == 0) {
+			++i; ++j;
+			if (m->filesize == n->filesize && memcmp(m->data, n->data, m->filesize) == 0)
+				continue;
+			// Not the same!
+			doBak = 1;
+			fprintf(stderr, "Backup mismatch entry: ");
+		} else {
+			// Someting new in ramdisk, record in rem
+			++j;
+			if (n->remove) continue;
+			rem->data = xrealloc(rem->data, rem->filesize + n->namesize);
+			memcpy(rem->data + rem->filesize, n->filename, n->namesize);
+			rem->filesize += n->namesize;
+			fprintf(stderr, "Record new entry: [%s] -> [.backup/.rmlist]\n", n->filename);
+		}
+		if (doBak) {
+			m->namesize += 8;
+			m->filename = realloc(m->filename, m->namesize);
+			strcpy(buf, m->filename);
+			sprintf(m->filename, ".backup/%s", buf);
+			fprintf(stderr, "[%s] -> [%s]\n", buf, m->filename);
+			vec_push_back(&bak, m);
+			// NULL the original entry, so it won't be freed
+			vec_entry(o)[i - 1] = NULL;
+		}
+	}
+
+	// Add the backup files to the original ramdisk
+	vec_for_each(&bak, m) {
+		vec_push_back(v, m);
+	}
+
+	// Don't include if empty
+	if (rem->filesize == 0) {
+		rem->remove = 1;
+		if (bak.size == 2)
+			dir->remove = 1;
+	}
+
+	// Cleanup
+	cpio_vec_destroy(o);
+}
+
+static int cpio_restore(struct vector *v) {
+	cpio_entry *f, *n;
+	int ret = 1;
+	vec_for_each(v, f) {
+		if (strstr(f->filename, ".backup") != NULL) {
+			ret = 0;
+			f->remove = 1;
+			if (strcmp(f->filename, ".backup") == 0) continue;
+			if (strcmp(f->filename, ".backup/.rmlist") == 0) {
+				for (int pos = 0; pos < f->filesize; pos += strlen(f->data + pos) + 1)
+					cpio_rm(0, f->data + pos, v);
+				continue;
+			}
+			n = xcalloc(sizeof(*n), 1);
+			memcpy(n, f, sizeof(*f));
+			n->namesize -= 8;
+			n->filename = strdup(f->filename + 8);
+			n->data = f->data;
+			f->data = NULL;
+			n->remove = 0;
+			fprintf(stderr, "Restoring [%s] -> [%s]\n", f->filename, n->filename);
+			cpio_vec_insert(v, n);
+		}
+	}
+	// Some known stuff we can remove
+	cpio_rm(0, "sbin/magic_mask.sh", v);
+	cpio_rm(0, "init.magisk.rc", v);
+	cpio_rm(0, "magisk", v);
+	return ret;
+}
+
+static void cpio_stocksha1(struct vector *v) {
+	cpio_entry *f;
+	char sha1[41];
+	vec_for_each(v, f) {
+		if (strcmp(f->filename, "init.magisk.rc") == 0
+			|| strcmp(f->filename, "overlay/init.magisk.rc") == 0) {
+			for (char *pos = f->data; pos < f->data + f->filesize; pos = strchr(pos + 1, '\n') + 1) {
+				if (memcmp(pos, "# STOCKSHA1=", 12) == 0) {
+					pos += 12;
+					memcpy(sha1, pos, 40);
+					sha1[40] = '\0';
+					printf("%s\n", sha1);
+					return;
+				}
+			}
+		}
+	}
+}
+
+static void cpio_mv(struct vector *v, const char *from, const char *to) {
+	struct cpio_entry *f, *t;
+	vec_for_each(v, f) {
+		if (strcmp(f->filename, from) == 0) {
+			fprintf(stderr, "Move [%s] -> [%s]\n", from, to);
+			vec_for_each(v, t) {
+				if (strcmp(t->filename, to) == 0) {
+					t->remove = 1;
+					break;
+				}
+			}
+			free(f->filename);
+			f->namesize = strlen(to) + 1;
+			f->filename = strdup(to);
+			return;
+		}
+	}
+	fprintf(stderr, "Cannot find entry %s\n", from);
+	exit(1);
+}
+
+int cpio_commands(const char *command, int argc, char *argv[]) {
+	int recursive = 0, ret = 0;
+	command_t cmd;
+	char *incpio = argv[0];
+	++argv;
+	--argc;
+	if (strcmp(command, "test") == 0) {
+		cmd = TEST;
+	} else if (strcmp(command, "restore") == 0) {
+		cmd = RESTORE;
+	} else if (strcmp(command, "stocksha1") == 0) {
+		cmd = STOCKSHA1;
+	} else if (argc == 1 && strcmp(command, "backup") == 0) {
+		cmd = BACKUP;
+	} else if (argc > 0 && strcmp(command, "rm") == 0) {
+		cmd = RM;
+		if (argc == 2 && strcmp(argv[0], "-r") == 0) {
+			recursive = 1;
+			++argv;
+			--argc;
+		}
+	} else if (argc == 2 && strcmp(command, "mv") == 0) {
+		cmd = MV;
+	} else if (argc == 2 && strcmp(command, "patch") == 0) {
+		cmd = PATCH;
+	} else if (argc == 2 && strcmp(command, "extract") == 0) {
+		cmd = EXTRACT;
+	} else if (argc == 2 && strcmp(command, "mkdir") == 0) {
+		cmd = MKDIR;
+	} else if (argc == 3 && strcmp(command, "add") == 0) {
+		cmd = ADD;
+	} else {
+		cmd = NONE;
+	}
+	struct vector v;
+	vec_init(&v);
+	parse_cpio(incpio, &v);
+	switch(cmd) {
+	case TEST:
+		cpio_test(&v);
+		break;
+	case RESTORE:
+		ret = cpio_restore(&v);
+		break;
+	case STOCKSHA1:
+		cpio_stocksha1(&v);
+		return 0;
+	case BACKUP:
+		cpio_backup(argv[0], &v);
+	case RM:
+		cpio_rm(recursive, argv[0], &v);
+		break;
+	case PATCH:
+		cpio_patch(&v, strcmp(argv[0], "true") == 0, strcmp(argv[1], "true") == 0);
+		break;
+	case EXTRACT:
+		cpio_extract(argv[0], argv[1], &v);
+		break;
+	case MKDIR:
+		cpio_mkdir(strtoul(argv[0], NULL, 8), argv[1], &v);
+		break;
+	case ADD:
+		cpio_add(strtoul(argv[0], NULL, 8), argv[1], argv[2], &v);
+		break;
+	case MV:
+		cpio_mv(&v, argv[0], argv[1]);
+		break;
+	case NONE:
+		return 1;
+	}
+	dump_cpio(incpio, &v);
+	cpio_vec_destroy(&v);
+	exit(ret);
+}

jni/magiskboot/cpio.h

@@ -0,0 +1,56 @@
+#ifndef _CPIO_H_
+#define _CPIO_H_
+
+#include <stdint.h>
+
+typedef struct cpio_entry {
+	// uint32_t ino;
+	uint32_t mode;
+	uint32_t uid;
+	uint32_t gid;
+	// uint32_t nlink;
+	// uint32_t mtime;
+	uint32_t filesize;
+	// uint32_t devmajor;
+	// uint32_t devminor;
+	// uint32_t rdevmajor;
+	// uint32_t rdevminor;
+	uint32_t namesize;
+	// uint32_t check;
+	char *filename;
+	char *data;
+	int remove;
+} cpio_entry;
+
+typedef struct cpio_newc_header {
+	char magic[6];
+	char ino[8];
+	char mode[8];
+	char uid[8];
+	char gid[8];
+	char nlink[8];
+	char mtime[8];
+	char filesize[8];
+	char devmajor[8];
+	char devminor[8];
+	char rdevmajor[8];
+	char rdevminor[8];
+	char namesize[8];
+	char check[8];
+} cpio_newc_header;
+
+typedef enum {
+    NONE,
+    RM,
+    MKDIR,
+    ADD,
+    MV,
+    EXTRACT,
+    TEST,
+    PATCH,
+    BACKUP,
+    RESTORE,
+    STOCKSHA1
+} command_t;
+
+#endif

jni/magiskboot/dtb.c

@@ -0,0 +1,66 @@
+#include <libfdt.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "magiskboot.h"
+#include "utils.h"
+
+/* Left here for debugging */
+
+// static void print_subnode(const void *fdt, int parent, int depth) {
+// 	int node;
+// 	fdt_for_each_subnode(node, fdt, parent) {
+// 		for (int i = 0; i < depth; ++i) printf("  ");
+// 		printf("%d: %s\n", node, fdt_get_name(fdt, node, NULL));
+// 		print_subnode(fdt, node, depth + 1);
+// 	}
+// }
+
+static int find_fstab(const void *fdt, int parent) {
+	int node, fstab;
+	fdt_for_each_subnode(node, fdt, parent) {
+		if (strcmp(fdt_get_name(fdt, node, NULL), "fstab") == 0)
+			return node;
+		fstab = find_fstab(fdt, node);
+		if (fstab != -1)
+			return fstab;
+	}
+	return -1;
+}
+
+void dtb_patch(const char *file) {
+	size_t size ;
+	void *dtb, *fdt;
+	fprintf(stderr, "Loading dtbs from [%s]\n\n", file);
+	mmap_rw(file, &dtb, &size);
+	// Loop through all the dtbs
+	int dtb_num = 0, patched = 0;
+	for (int i = 0; i < size; ++i) {
+		if (memcmp(dtb + i, DTB_MAGIC, 4) == 0) {
+			fdt = dtb + i;
+			int fstab = find_fstab(fdt, 0);
+			if (fstab > 0) {
+				fprintf(stderr, "Found fstab in dtb.%04d\n", dtb_num++);
+				int block;
+				fdt_for_each_subnode(block, fdt, fstab) {
+					fprintf(stderr, "Found block [%s] in fstab\n", fdt_get_name(fdt, block, NULL));
+					int skip, value_size;
+					char *value = (char *) fdt_getprop(fdt, block, "fsmgr_flags", &value_size);
+					for (int i = 0; i < value_size; ++i) {
+						if ((skip = check_verity_pattern(value + i)) > 0) {
+							fprintf(stderr, "Remove pattern [%.*s] in [fsmgr_flags]\n", skip, value + i);
+							memcpy(value + i, value + i + skip, value_size - i - skip);
+							memset(value + value_size - skip, '\0', skip);
+							patched = 1;
+						}
+					}
+				}
+			}
+		}
+	}
+	fprintf(stderr, "\n");
+	munmap(dtb, size);
+	exit(!patched);
+}
+
+

jni/magiskboot/hexpatch.c

@@ -0,0 +1,38 @@
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "magiskboot.h"
+#include "utils.h"
+
+static void hex2byte(const char *hex, unsigned char *str) {
+	char high, low;
+	for (int i = 0, length = strlen(hex); i < length; i += 2) {
+		high = toupper(hex[i]) - '0';
+		low = toupper(hex[i + 1]) - '0';
+		str[i / 2] = ((high > 9 ? high - 7 : high) << 4) + (low > 9 ? low - 7 : low);
+	}
+}
+
+void hexpatch(const char *image, const char *from, const char *to) {
+	int patternsize = strlen(from) / 2, patchsize = strlen(to) / 2;
+	size_t filesize;
+	void *file, *pattern, *patch;
+	mmap_rw(image, &file, &filesize);
+	pattern = xmalloc(patternsize);
+	patch = xmalloc(patchsize);
+	hex2byte(from, pattern);
+	hex2byte(to, patch);
+	for (size_t i = 0; i < filesize - patternsize; ++i) {
+		if (memcmp(file + i, pattern, patternsize) == 0) {
+			fprintf(stderr, "Pattern %s found!\nPatching to %s\n", from, to);
+			memset(file + i, 0, patternsize);
+			memcpy(file + i, patch, patchsize);
+			i += patternsize - 1;
+		}
+	}
+	munmap(file, filesize);
+	free(pattern);
+	free(patch);
+}

jni/magiskboot/magiskboot.h

@@ -0,0 +1,47 @@
+#ifndef _MAGISKBOOT_H_
+#define _MAGISKBOOT_H_
+
+#include <sys/types.h>
+
+#include "bootimg.h"
+
+#define KERNEL_FILE     "kernel"
+#define RAMDISK_FILE    "ramdisk.cpio"
+#define SECOND_FILE     "second"
+#define DTB_FILE        "dtb"
+#define NEW_BOOT        "new-boot.img"
+
+#define str(a) #a
+#define xstr(a) str(a)
+
+// Main entries
+void unpack(const char *image);
+void repack(const char* orig_image, const char* out_image);
+void hexpatch(const char *image, const char *from, const char *to);
+int parse_img(void *orig, size_t size, boot_img *boot);
+int cpio_commands(const char *command, int argc, char *argv[]);
+void comp_file(const char *method, const char *from, const char *to);
+void decomp_file(char *from, const char *to);
+void dtb_patch(const char *file);
+
+// Compressions
+size_t gzip(int mode, int fd, const void *buf, size_t size);
+size_t lzma(int mode, int fd, const void *buf, size_t size);
+size_t lz4(int mode, int fd, const void *buf, size_t size);
+size_t bzip2(int mode, int fd, const void *buf, size_t size);
+size_t lz4_legacy(int mode, int fd, const void *buf, size_t size);
+long long comp(file_t type, int to, const void *from, size_t size);
+long long decomp(file_t type, int to, const void *from, size_t size);
+
+// Utils
+extern void mmap_ro(const char *filename, void **buf, size_t *size);
+extern void mmap_rw(const char *filename, void **buf, size_t *size);
+extern void write_zero(int fd, size_t size);
+extern void mem_align(size_t *pos, size_t align);
+extern void file_align(int fd, size_t align, int out);
+extern int open_new(const char *filename);
+extern void *patch_init_rc(char *data, uint32_t *size);
+extern int check_verity_pattern(const char *s);
+extern int check_encryption_pattern(const char *s);
+
+#endif

jni/magiskboot/main.c

@@ -0,0 +1,137 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "magiskboot.h"
+#include "sha1.h"
+
+/********************
+  Patch Boot Image
+*********************/
+
+static void usage(char *arg0) {
+	fprintf(stderr,
+		"Usage: %s <action> [args...]\n"
+		"\n"
+		"Supported actions:\n"
+		" --unpack <bootimg>\n"
+		"  Unpack <bootimg> to kernel, ramdisk.cpio, (second), (dtb) into the\n"
+		"  current directory\n"
+		"\n"
+		" --repack <origbootimg> [outbootimg]\n"
+		"  Repack kernel, ramdisk.cpio[.ext], second, dtb... from current directory\n"
+		"  to [outbootimg], or new-boot.img if not specified.\n"
+		"  It will compress ramdisk.cpio with the same method used in <origbootimg>\n"
+		"  if exists, or attempt to find ramdisk.cpio.[ext], and repack\n"
+		"  directly with the compressed ramdisk file\n"
+		"\n"
+		" --hexpatch <file> <hexpattern1> <hexpattern2>\n"
+		"  Search <hexpattern1> in <file>, and replace with <hexpattern2>\n"
+		"\n"
+		" --cpio-<cmd> <incpio> [flags...] [args...]\n"
+		"  Do cpio related cmds to <incpio> (modifications are done directly)\n"
+		"  Supported commands:\n"
+		"    -rm [-r] <entry>\n"
+		"      Remove entry from <incpio>, flag -r to remove recursively\n"
+		"    -mkdir <mode> <entry>\n"
+		"      Create directory as an <entry>\n"
+		"    -add <mode> <entry> <infile>\n"
+		"      Add <infile> as an <entry>; replaces <entry> if already exists\n"
+		"    -mv <from-entry> <to-entry>\n"
+		"      Move <from-entry> to <to-entry>\n"
+		"    -extract <entry> <outfile>\n"
+		"      Extract <entry> to <outfile>\n"
+		"    -test \n"
+		"      Return value: 0/stock 1/Magisk 2/other (e.g. phh, SuperSU)\n"
+		"    -patch <KEEPVERITY> <KEEPFORCEENCRYPT>\n"
+		"      Patch cpio for Magisk. KEEP**** are true/false values\n"
+		"    -backup <origcpio>\n"
+		"      Create ramdisk backups into <incpio> from <origcpio>\n"
+		"    -restore\n"
+		"      Restore ramdisk from ramdisk backup within <incpio>\n"
+		"    -stocksha1\n"
+		"      Get stock boot SHA1 recorded within <incpio>\n"
+		"\n"
+		" --dtb-patch <dtb>\n"
+		"  Search for fstab in <dtb> and remove verity checks\n"
+		"\n"
+		" --compress[=method] <infile> [outfile]\n"
+		"  Compress <infile> with [method] (default: gzip), optionally to [outfile]\n"
+		"  Supported methods: "
+	, arg0);
+	for (int i = 0; SUP_LIST[i]; ++i)
+		fprintf(stderr, "%s ", SUP_LIST[i]);
+	fprintf(stderr,
+		"\n"
+		"\n"
+		" --decompress <infile> [outfile]\n"
+		"  Detect method and decompress <infile>, optionally to [outfile]\n  Supported methods: ");
+	for (int i = 0; SUP_LIST[i]; ++i)
+		fprintf(stderr, "%s ", SUP_LIST[i]);
+	fprintf(stderr,
+		"\n"
+		"\n"
+		" --sha1 <file>\n"
+		"  Print the SHA1 checksum for <file>\n"
+		"\n"
+		" --cleanup\n"
+		"  Cleanup the current working directory\n"
+		"\n");
+
+	exit(1);
+}
+
+int main(int argc, char *argv[]) {
+	fprintf(stderr, "MagiskBoot v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu) - Boot Image Modification Tool\n\n");
+
+	if (argc > 1 && strcmp(argv[1], "--cleanup") == 0) {
+		fprintf(stderr, "Cleaning up...\n\n");
+		char name[PATH_MAX];
+		unlink(KERNEL_FILE);
+		unlink(RAMDISK_FILE);
+		unlink(RAMDISK_FILE ".raw");
+		unlink(SECOND_FILE);
+		unlink(DTB_FILE);
+		for (int i = 0; SUP_EXT_LIST[i]; ++i) {
+			sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
+			unlink(name);
+		}
+	} else if (argc > 2 && strcmp(argv[1], "--sha1") == 0) {
+		char sha1[21], *buf;
+		size_t size;
+		mmap_ro(argv[2], (void **) &buf, &size);
+		SHA1(sha1, buf, size);
+		for (int i = 0; i < 20; ++i)
+			printf("%02x", sha1[i]);
+		printf("\n");
+		munmap(buf, size);
+	} else if (argc > 2 && strcmp(argv[1], "--unpack") == 0) {
+		unpack(argv[2]);
+	} else if (argc > 2 && strcmp(argv[1], "--repack") == 0) {
+		repack(argv[2], argc > 3 ? argv[3] : NEW_BOOT);
+	} else if (argc > 2 && strcmp(argv[1], "--decompress") == 0) {
+		decomp_file(argv[2], argc > 3 ? argv[3] : NULL);
+	} else if (argc > 2 && strcmp(argv[1], "--dtb-patch") == 0) {
+		dtb_patch(argv[2]);
+	} else if (argc > 2 && strncmp(argv[1], "--compress", 10) == 0) {
+		char *method;
+		method = strchr(argv[1], '=');
+		if (method == NULL) method = "gzip";
+		else method++;
+		comp_file(method, argv[2], argc > 3 ? argv[3] : NULL);
+	} else if (argc > 4 && strcmp(argv[1], "--hexpatch") == 0) {
+		hexpatch(argv[2], argv[3], argv[4]);
+	} else if (argc > 2 && strncmp(argv[1], "--cpio", 6) == 0) {
+		char *command;
+		command = strchr(argv[1] + 2, '-');
+		if (command == NULL) usage(argv[0]);
+		else ++command;
+		if (cpio_commands(command, argc - 2, argv + 2)) usage(argv[0]);
+	} else {
+		usage(argv[0]);
+	}
+
+	return 0;
+}

jni/magiskboot/sha1.c

@@ -0,0 +1,295 @@
+/*
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+
+Test Vectors (from FIPS PUB 180-1)
+"abc"
+  A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
+"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
+  84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
+A million repetitions of "a"
+  34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
+*/
+
+/* #define LITTLE_ENDIAN * This should be #define'd already, if true. */
+/* #define SHA1HANDSOFF * Copies data before messing with it. */
+
+#define SHA1HANDSOFF
+
+#include <stdio.h>
+#include <string.h>
+
+/* for uint32_t */
+#include <stdint.h>
+
+#include "sha1.h"
+
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
+    |(rol(block->l[i],8)&0x00FF00FF))
+#elif BYTE_ORDER == BIG_ENDIAN
+#define blk0(i) block->l[i]
+#else
+#error "Endianness not defined!"
+#endif
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+
+void SHA1Transform(
+    uint32_t state[5],
+    const unsigned char buffer[64]
+)
+{
+    uint32_t a, b, c, d, e;
+
+    typedef union
+    {
+        unsigned char c[64];
+        uint32_t l[16];
+    } CHAR64LONG16;
+
+#ifdef SHA1HANDSOFF
+    CHAR64LONG16 block[1];      /* use array to appear as a pointer */
+
+    memcpy(block, buffer, 64);
+#else
+    /* The following had better never be used because it causes the
+     * pointer-to-const buffer to be cast into a pointer to non-const.
+     * And the result is written through.  I threw a "const" in, hoping
+     * this will cause a diagnostic.
+     */
+    CHAR64LONG16 *block = (const CHAR64LONG16 *) buffer;
+#endif
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a, b, c, d, e, 0);
+    R0(e, a, b, c, d, 1);
+    R0(d, e, a, b, c, 2);
+    R0(c, d, e, a, b, 3);
+    R0(b, c, d, e, a, 4);
+    R0(a, b, c, d, e, 5);
+    R0(e, a, b, c, d, 6);
+    R0(d, e, a, b, c, 7);
+    R0(c, d, e, a, b, 8);
+    R0(b, c, d, e, a, 9);
+    R0(a, b, c, d, e, 10);
+    R0(e, a, b, c, d, 11);
+    R0(d, e, a, b, c, 12);
+    R0(c, d, e, a, b, 13);
+    R0(b, c, d, e, a, 14);
+    R0(a, b, c, d, e, 15);
+    R1(e, a, b, c, d, 16);
+    R1(d, e, a, b, c, 17);
+    R1(c, d, e, a, b, 18);
+    R1(b, c, d, e, a, 19);
+    R2(a, b, c, d, e, 20);
+    R2(e, a, b, c, d, 21);
+    R2(d, e, a, b, c, 22);
+    R2(c, d, e, a, b, 23);
+    R2(b, c, d, e, a, 24);
+    R2(a, b, c, d, e, 25);
+    R2(e, a, b, c, d, 26);
+    R2(d, e, a, b, c, 27);
+    R2(c, d, e, a, b, 28);
+    R2(b, c, d, e, a, 29);
+    R2(a, b, c, d, e, 30);
+    R2(e, a, b, c, d, 31);
+    R2(d, e, a, b, c, 32);
+    R2(c, d, e, a, b, 33);
+    R2(b, c, d, e, a, 34);
+    R2(a, b, c, d, e, 35);
+    R2(e, a, b, c, d, 36);
+    R2(d, e, a, b, c, 37);
+    R2(c, d, e, a, b, 38);
+    R2(b, c, d, e, a, 39);
+    R3(a, b, c, d, e, 40);
+    R3(e, a, b, c, d, 41);
+    R3(d, e, a, b, c, 42);
+    R3(c, d, e, a, b, 43);
+    R3(b, c, d, e, a, 44);
+    R3(a, b, c, d, e, 45);
+    R3(e, a, b, c, d, 46);
+    R3(d, e, a, b, c, 47);
+    R3(c, d, e, a, b, 48);
+    R3(b, c, d, e, a, 49);
+    R3(a, b, c, d, e, 50);
+    R3(e, a, b, c, d, 51);
+    R3(d, e, a, b, c, 52);
+    R3(c, d, e, a, b, 53);
+    R3(b, c, d, e, a, 54);
+    R3(a, b, c, d, e, 55);
+    R3(e, a, b, c, d, 56);
+    R3(d, e, a, b, c, 57);
+    R3(c, d, e, a, b, 58);
+    R3(b, c, d, e, a, 59);
+    R4(a, b, c, d, e, 60);
+    R4(e, a, b, c, d, 61);
+    R4(d, e, a, b, c, 62);
+    R4(c, d, e, a, b, 63);
+    R4(b, c, d, e, a, 64);
+    R4(a, b, c, d, e, 65);
+    R4(e, a, b, c, d, 66);
+    R4(d, e, a, b, c, 67);
+    R4(c, d, e, a, b, 68);
+    R4(b, c, d, e, a, 69);
+    R4(a, b, c, d, e, 70);
+    R4(e, a, b, c, d, 71);
+    R4(d, e, a, b, c, 72);
+    R4(c, d, e, a, b, 73);
+    R4(b, c, d, e, a, 74);
+    R4(a, b, c, d, e, 75);
+    R4(e, a, b, c, d, 76);
+    R4(d, e, a, b, c, 77);
+    R4(c, d, e, a, b, 78);
+    R4(b, c, d, e, a, 79);
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+#ifdef SHA1HANDSOFF
+    memset(block, '\0', sizeof(block));
+#endif
+}
+
+
+/* SHA1Init - Initialize new context */
+
+void SHA1Init(
+    SHA1_CTX * context
+)
+{
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+
+/* Run your data through this. */
+
+void SHA1Update(
+    SHA1_CTX * context,
+    const unsigned char *data,
+    uint32_t len
+)
+{
+    uint32_t i;
+
+    uint32_t j;
+
+    j = context->count[0];
+    if ((context->count[0] += len << 3) < j)
+        context->count[1]++;
+    context->count[1] += (len >> 29);
+    j = (j >> 3) & 63;
+    if ((j + len) > 63)
+    {
+        memcpy(&context->buffer[j], data, (i = 64 - j));
+        SHA1Transform(context->state, context->buffer);
+        for (; i + 63 < len; i += 64)
+        {
+            SHA1Transform(context->state, &data[i]);
+        }
+        j = 0;
+    }
+    else
+        i = 0;
+    memcpy(&context->buffer[j], &data[i], len - i);
+}
+
+
+/* Add padding and return the message digest. */
+
+void SHA1Final(
+    unsigned char digest[20],
+    SHA1_CTX * context
+)
+{
+    unsigned i;
+
+    unsigned char finalcount[8];
+
+    unsigned char c;
+
+#if 0    /* untested "improvement" by DHR */
+    /* Convert context->count to a sequence of bytes
+     * in finalcount.  Second element first, but
+     * big-endian order within element.
+     * But we do it all backwards.
+     */
+    unsigned char *fcp = &finalcount[8];
+
+    for (i = 0; i < 2; i++)
+    {
+        uint32_t t = context->count[i];
+
+        int j;
+
+        for (j = 0; j < 4; t >>= 8, j++)
+            *--fcp = (unsigned char) t}
+#else
+    for (i = 0; i < 8; i++)
+    {
+        finalcount[i] = (unsigned char) ((context->count[(i >= 4 ? 0 : 1)] >> ((3 - (i & 3)) * 8)) & 255);      /* Endian independent */
+    }
+#endif
+    c = 0200;
+    SHA1Update(context, &c, 1);
+    while ((context->count[0] & 504) != 448)
+    {
+        c = 0000;
+        SHA1Update(context, &c, 1);
+    }
+    SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
+    for (i = 0; i < 20; i++)
+    {
+        digest[i] = (unsigned char)
+            ((context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
+    }
+    /* Wipe variables */
+    memset(context, '\0', sizeof(*context));
+    memset(&finalcount, '\0', sizeof(finalcount));
+}
+
+void SHA1(
+    char *hash_out,
+    const char *str,
+    int len)
+{
+    SHA1_CTX ctx;
+    unsigned int ii;
+
+    SHA1Init(&ctx);
+    for (ii=0; ii<len; ii+=1)
+        SHA1Update(&ctx, (const unsigned char*)str + ii, 1);
+    SHA1Final((unsigned char *)hash_out, &ctx);
+    hash_out[20] = '\0';
+}

jni/magiskboot/sha1.h

@@ -0,0 +1,44 @@
+#ifndef SHA1_H
+#define SHA1_H
+
+/*
+   SHA-1 in C
+   By Steve Reid <steve@edmweb.com>
+   100% Public Domain
+ */
+
+#include "stdint.h"
+
+typedef struct
+{
+    uint32_t state[5];
+    uint32_t count[2];
+    unsigned char buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(
+    uint32_t state[5],
+    const unsigned char buffer[64]
+    );
+
+void SHA1Init(
+    SHA1_CTX * context
+    );
+
+void SHA1Update(
+    SHA1_CTX * context,
+    const unsigned char *data,
+    uint32_t len
+    );
+
+void SHA1Final(
+    unsigned char digest[20],
+    SHA1_CTX * context
+    );
+
+void SHA1(
+    char *hash_out,
+    const char *str,
+    int len);
+
+#endif /* SHA1_H */

jni/magiskboot/types.c

@@ -0,0 +1,83 @@
+#include <string.h>
+
+#include "bootimg.h"
+#include "types.h"
+
+char *SUP_LIST[] = { "gzip", "xz", "lzma", "bzip2", "lz4", "lz4_legacy", NULL };
+char *SUP_EXT_LIST[] = { "gz", "xz", "lzma", "bz2", "lz4", "lz4", NULL };
+file_t SUP_TYPE_LIST[] = { GZIP, XZ, LZMA, BZIP2, LZ4, LZ4_LEGACY, 0 };
+
+file_t check_type(const void *buf) {
+	if (memcmp(buf, CHROMEOS_MAGIC, 8) == 0) {
+		return CHROMEOS;
+	} else if (memcmp(buf, BOOT_MAGIC, BOOT_MAGIC_SIZE) == 0) {
+		return AOSP;
+	} else if (memcmp(buf, ELF32_MAGIC, 5) == 0) {
+		return ELF32;
+	} else if (memcmp(buf, ELF64_MAGIC, 5) == 0) {
+		return ELF64;
+	} else if (memcmp(buf, GZIP_MAGIC, 4) == 0) {
+		return GZIP;
+	} else if (memcmp(buf, LZOP_MAGIC, 9) == 0) {
+		return LZOP;
+	} else if (memcmp(buf, XZ_MAGIC, 6) == 0) {
+		return XZ;
+	} else if (memcmp(buf, "\x5d\x00\x00", 3) == 0
+			&& (((char *)buf)[12] == '\xff' || ((char *)buf)[12] == '\x00')) {
+		return LZMA;
+	} else if (memcmp(buf, BZIP_MAGIC, 3) == 0) {
+		return BZIP2;
+	} else if (memcmp(buf, LZ4_MAGIC, 4) == 0) {
+		return LZ4;
+	} else if (memcmp(buf, LZ4_LEG_MAGIC, 4) == 0) {
+		return LZ4_LEGACY;
+	} else if (memcmp(buf, MTK_MAGIC, 4) == 0) {
+		return MTK;
+	} else if (memcmp(buf, DTB_MAGIC, 4) == 0) {
+		return DTB;
+	} else {
+		return UNKNOWN;
+	}
+}
+
+void get_type_name(file_t type, char *name) {
+	char *s;
+	switch (type) {
+		case CHROMEOS:
+			s = "chromeos";
+			break;
+		case AOSP:
+			s = "aosp";
+			break;
+		case GZIP:
+			s = "gzip";
+			break;
+		case LZOP:
+			s = "lzop";
+			break;
+		case XZ:
+			s = "xz";
+			break;
+		case LZMA:
+			s = "lzma";
+			break;
+		case BZIP2:
+			s = "bzip2";
+			break;
+		case LZ4:
+			s = "lz4";
+			break;
+		case LZ4_LEGACY:
+			s = "lz4_legacy";
+			break;
+		case MTK:
+			s = "mtk";
+			break;
+		case DTB:
+			s = "dtb";
+			break;
+		default:
+			s = "raw";
+	}
+	strcpy(name, s);
+}

jni/magiskboot/types.h

@@ -0,0 +1,41 @@
+#ifndef _TYPES_H_
+#define _TYPES_H_
+
+typedef enum {
+    UNKNOWN,
+    CHROMEOS,
+    AOSP,
+    ELF32,
+    ELF64,
+    GZIP,
+    LZOP,
+    XZ,
+    LZMA,
+    BZIP2,
+    LZ4,
+    LZ4_LEGACY,
+    MTK,
+    DTB
+} file_t;
+
+#define CHROMEOS_MAGIC  "CHROMEOS"
+#define ELF32_MAGIC     "\x7f""ELF\x01"
+#define ELF64_MAGIC     "\x7f""ELF\x02"
+#define GZIP_MAGIC      "\x1f\x8b\x08\x00"
+#define LZOP_MAGIC      "\x89\x4c\x5a\x4f\x00\x0d\x0a\x1a\x0a"
+#define XZ_MAGIC        "\xfd""7zXZ\x00"
+#define BZIP_MAGIC      "BZh"
+#define LZ4_MAGIC       "\x04\x22\x4d\x18"
+#define LZ4_LEG_MAGIC   "\x02\x21\x4c\x18"
+#define MTK_MAGIC       "\x88\x16\x88\x58"
+#define DTB_MAGIC       "\xd0\x0d\xfe\xed"
+#define LG_BUMP_MAGIC   "\x41\xa9\xe4\x67\x74\x4d\x1d\x1b\xa4\x29\xf2\xec\xea\x65\x52\x79"
+
+extern char *SUP_LIST[];
+extern char *SUP_EXT_LIST[];
+extern file_t SUP_TYPE_LIST[];
+
+file_t check_type(const void *buf);
+void get_type_name(file_t type, char *name);
+
+#endif

jni/magiskhide.c

@@ -1,256 +0,0 @@
-#define _GNU_SOURCE
-#include <string.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sched.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <signal.h>
-
-#include <sys/mount.h>
-#include <sys/inotify.h>
-#include <sys/wait.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#define LOGFILE 	"/cache/magisk.log"
-#define HIDELIST 	"/magisk/.core/magiskhide/hidelist"
-
-FILE *logfile;
-int i, list_size;
-char **hide_list = NULL;
-pthread_mutex_t mutex;
-
-char **file_to_str_arr(FILE *fp, int *size) {
-	int allocated = 16;
-	char *line = NULL, **array;
-	size_t len = 0;
-	ssize_t read;
-
-	array = (char **) malloc(sizeof(char*) * allocated);
-
-	*size = 0;
-	while ((read = getline(&line, &len, fp)) != -1) {
-		if (*size >= allocated) {
-			// Double our allocation and re-allocate
-			allocated *= 2;
-			array = (char **) realloc(array, sizeof(char*) * allocated);
-		}
-		// Remove end newline
-		if (line[read - 1] == '\n') {
-			line[read - 1] = '\0';
-		}
-		array[*size] = line;
-		line = NULL;
-		++(*size);
-	}
-	return array;
-}
-
-void lazy_unmount(const char* mountpoint) {
-	if (umount2(mountpoint, MNT_DETACH) != -1)
-		fprintf(logfile, "MagiskHide: Unmounted (%s)\n", mountpoint);
-	else
-		fprintf(logfile, "MagiskHide: Unmount Failed (%s)\n", mountpoint);
-}
-
-//WARNING: Calling this will change our current namespace
-//We don't care because we don't want to run from here anyway
-int hideMagisk(int pid, int uid) {
-	struct stat info;
-	char path[256];
-	// snprintf(path, 256, "/proc/%d", pid);
-	// if (stat(path, &info) == -1) {
-	// 	fprintf(logfile, "MagiskHide: Unable to get info for pid=%d\n", pid);
-	// 	return 1;
-	// }
-	// if (info.st_uid != uid) {
-	// 	fprintf(logfile, "MagiskHide: Incorrect uid=%d, expect uid=%d\n", info.st_uid, uid);
-	// 	return 1;
-	// }
-
-	snprintf(path, 256, "/proc/%d/ns/mnt", pid);
-	int fd = open(path, O_RDONLY);
-	if(fd == -1) return 2; // Maybe process died..
-	if(setns(fd, 0) == -1) {
-		fprintf(logfile, "MagiskHide: Unable to change namespace for pid=%d\n", pid);
-		return 3;
-	}
-
-	snprintf(path, 256, "/proc/%d/mounts", pid);
-	FILE *mount_fp = fopen(path, "r");
-	if (mount_fp == NULL) {
-		fprintf(logfile, "MagiskHide: Error opening mount list!\n");
-		return 4;
-	}
-
-	int mount_size;
-	char **mount_list = file_to_str_arr(mount_fp, &mount_size), mountpoint[256], cache_block[256];
-	fclose(mount_fp);
-
-	// Find the cache block
-	for(i = 0; i < mount_size; ++i) {
-		if (strstr(mount_list[i], "/cache")) {
-			sscanf(mount_list[i], "%256s", cache_block);
-			break;
-		}
-	}
-
-	// Unmount in inverse order
-	for(i = mount_size - 1; i >= 0; --i) {
-		if (strstr(mount_list[i], cache_block) && strstr(mount_list[i], "/system")) {
-			sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
-		} else if (strstr(mount_list[i], "/dev/block/loop")) {
-			if (strstr(mount_list[i], "/dev/magisk")) continue;
-			// Everything from loop mount
-			sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
-		} else if (strstr(mount_list[i], "tmpfs /system/")) {
-			// Directly unmount skeletons
-			sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
-		} else {
-			free(mount_list[i]);
-			continue;
-		}
-		lazy_unmount(mountpoint);
-		free(mount_list[i]);
-	}
-	// Free memory
-	free(mount_list);
-
-	return 0;
-}
-
-void update_list(const char *listpath) {
-	FILE *hide_fp = fopen((char*) listpath, "r");
-	if (hide_fp == NULL) {
-		fprintf(logfile, "MagiskHide: Error opening hide list\n");
-		exit(1);
-	}
-	pthread_mutex_lock(&mutex);
-	if (hide_list) {
-		// Free memory
-		for(i = 0; i < list_size; ++i)
-			free(hide_list[i]);
-		free(hide_list);
-	}
-	hide_list = file_to_str_arr(hide_fp, &list_size);
-	pthread_mutex_unlock(&mutex);
-	fclose(hide_fp);
-	if (list_size) fprintf(logfile, "MagiskHide: Update process/package list:\n");
-	for(i = 0; i < list_size; i++)
-		fprintf(logfile, "MagiskHide: [%s]\n", hide_list[i]);
-}
-
-void quit_pthread(int sig) {
-	// Free memory
-	for(i = 0; i < list_size; ++i)
-		free(hide_list[i]);
-	free(hide_list);
-	pthread_exit(NULL);
-}
-
-void *monitor_list(void *listpath) {
-	signal(SIGQUIT, quit_pthread);
-
-	int inotifyFd = -1;
-	char buffer[512];
-
-	while(1) {
-		if (inotifyFd == -1 || read(inotifyFd, buffer, 512) == -1) {
-			close(inotifyFd);
-			inotifyFd = inotify_init();
-			if (inotifyFd == -1) {
-				fprintf(logfile, "MagiskHide: Unable to watch %s\n", listpath);
-				exit(1);
-			}
-			if (inotify_add_watch(inotifyFd, (char*) listpath, IN_MODIFY) == -1) {
-				fprintf(logfile, "MagiskHide: Unable to watch %s\n", listpath);
-				exit(1);
-			}
-		}
-		update_list((char*) listpath);
-	}
-
-	return NULL;
-}
-
-int main(int argc, char **argv, char **envp) {
-
-	pid_t forkpid = fork();
-
-	if (forkpid < 0)
-		return 1;
-
-	if (forkpid == 0) {
-		if (setsid() < 0)
-			return 1;
-
-		close(STDIN_FILENO);
-		close(STDOUT_FILENO);
-		close(STDERR_FILENO);
-
-		logfile = fopen(LOGFILE, "a+");
-		setbuf(logfile, NULL);
-
-		pthread_t list_monitor;
-
-		pthread_mutex_init(&mutex, NULL);
-		pthread_create(&list_monitor, NULL, monitor_list, HIDELIST);
-
-		char buffer[512];
-		FILE *p = popen("while true; do logcat -b events -v raw -s am_proc_start; sleep 1; done", "r");
-
-		while(!feof(p)) {
-			//Format of am_proc_start is (as of Android 5.1 and 6.0)
-			//UserID, pid, unix uid, processName, hostingType, hostingName
-			fgets(buffer, sizeof(buffer), p);
-
-			char *pos = buffer;
-			while(1) {
-				pos = strchr(pos, ',');
-				if(pos == NULL)
-					break;
-				pos[0] = ' ';
-			}
-
-			int user, pid, uid;
-			char processName[256], hostingType[16], hostingName[256];
-			int ret = sscanf(buffer, "[%d %d %d %256s %16s %256s]",
-					&user, &pid, &uid,
-					processName, hostingType, hostingName);
-
-			if(ret != 6)
-				continue;
-
-			for (i = 0; i < list_size; ++i) {
-				if(strstr(processName, hide_list[i])) {
-					fprintf(logfile, "MagiskHide: Disabling for process=%s, PID=%d, UID=%d\n", processName, pid, uid);
-					forkpid = fork();
-					if (forkpid < 0)
-						break;
-					if (forkpid == 0) {
-						hideMagisk(pid, uid);
-						return 0;
-					}
-					waitpid(forkpid, NULL, 0);
-					kill(forkpid, SIGTERM);
-					break;
-				}
-			}
-		}
-
-		pclose(p);
-
-		pthread_kill(list_monitor, SIGQUIT);
-		pthread_mutex_destroy(&mutex);
-
-		fprintf(logfile, "MagiskHide: Error occurred...\n");
-
-		fclose(logfile);
-
-		return 1;
-	}
-
-	return 0;
-}

jni/magiskhide/hide_utils.c

@@ -0,0 +1,254 @@
+/* hide_utils.c - Some utility functions for MagiskHide
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <dirent.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <selinux/selinux.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "resetprop.h"
+#include "magiskhide.h"
+#include "daemon.h"
+
+static char *prop_key[] =
+	{ "ro.boot.verifiedbootstate", "ro.boot.flash.locked", "ro.boot.veritymode", "ro.boot.warranty_bit", "ro.warranty_bit",
+	  "ro.debuggable", "ro.secure", "ro.build.type", "ro.build.tags", "ro.build.selinux", NULL };
+
+static char *prop_value[] =
+	{ "green", "1", "enforcing", "0", "0", "0", "1", "user", "release-keys", "0", NULL };
+
+static int mocked = 0;
+
+void manage_selinux() {
+	if (mocked) return;
+	char val[1];
+	int fd = xopen(SELINUX_ENFORCE, O_RDONLY);
+	xxread(fd, val, 1);
+	close(fd);
+	// Permissive
+	if (val[0] == '0') {
+		LOGI("hide_daemon: Permissive detected, hide the state\n");
+
+		chmod(SELINUX_ENFORCE, 0640);
+		chmod(SELINUX_POLICY, 0440);
+		mocked = 1;
+	}
+}
+
+void hide_sensitive_props() {
+	LOGI("hide_utils: Hiding sensitive props\n");
+
+	// Hide all sensitive props
+	char *value;
+	for (int i = 0; prop_key[i]; ++i) {
+		value = getprop(prop_key[i]);
+		if (value) {
+			if (strcmp(value, prop_value[i]) != 0)
+				setprop2(prop_key[i], prop_value[i], 0);
+			free(value);
+		}
+	}
+}
+
+static void rm_magisk_prop(const char *name) {
+	if (strstr(name, "magisk")) {
+		deleteprop(name, 0);
+	}
+}
+
+void clean_magisk_props() {
+	LOGD("hide_utils: Cleaning magisk props\n");
+	getprop_all(rm_magisk_prop);
+}
+
+void relink_sbin() {
+	struct stat st;
+	if (stat("/sbin_orig", &st) == -1 && errno == ENOENT) {
+		// Re-link all binaries and bind mount
+		DIR *dir;
+		struct dirent *entry;
+		char from[PATH_MAX], to[PATH_MAX];
+
+		LOGI("hide_utils: Re-linking /sbin\n");
+
+		xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
+		xrename("/sbin", "/sbin_orig");
+		xmkdir("/sbin", 0755);
+		xchmod("/sbin", 0755);
+		xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
+		xmkdir("/dev/sbin_bind", 0755);
+		xchmod("/dev/sbin_bind", 0755);
+		dir = xopendir("/sbin_orig");
+
+		while ((entry = xreaddir(dir))) {
+			if (strcmp(entry->d_name, "..") == 0)
+				continue;
+			snprintf(from, sizeof(from), "/sbin_orig/%s", entry->d_name);
+			if (entry->d_type == DT_LNK)
+				xreadlink(from, from, sizeof(from));
+			snprintf(to, sizeof(to), "/dev/sbin_bind/%s", entry->d_name);
+			symlink(from, to);
+			lsetfilecon(to, "u:object_r:rootfs:s0");
+		}
+
+		closedir(dir);
+
+		xmount("/dev/sbin_bind", "/sbin", NULL, MS_BIND, NULL);
+	}
+}
+
+int add_list(char *proc) {
+	if (!hideEnabled) {
+		free(proc);
+		return HIDE_NOT_ENABLED;
+	}
+
+	char *line;
+	struct vector *new_list = xmalloc(sizeof(*new_list));
+	if (new_list == NULL)
+		return DAEMON_ERROR;
+	vec_init(new_list);
+
+	vec_for_each(hide_list, line) {
+		// They should be unique
+		if (strcmp(line, proc) == 0) {
+			free(proc);
+			vec_destroy(new_list);
+			free(new_list);
+			return HIDE_ITEM_EXIST;
+		}
+		vec_push_back(new_list, line);
+	}
+
+	vec_push_back(new_list, proc);
+	LOGI("hide_list add: [%s]\n", proc);
+	ps_filter_proc_name(proc, kill_proc);
+
+	// Critical region
+	pthread_mutex_lock(&hide_lock);
+	vec_destroy(hide_list);
+	free(hide_list);
+	hide_list = new_list;
+	pthread_mutex_unlock(&hide_lock);
+
+	pthread_mutex_lock(&file_lock);
+	vector_to_file(HIDELIST, hide_list); // Do not complain if file not found
+	pthread_mutex_unlock(&file_lock);
+	return DAEMON_SUCCESS;
+}
+
+int rm_list(char *proc) {
+	if (!hideEnabled) {
+		free(proc);
+		return HIDE_NOT_ENABLED;
+	}
+
+	daemon_response ret = DAEMON_ERROR;
+	char *line;
+	int do_rm = 0;
+	struct vector *new_list = xmalloc(sizeof(*new_list));
+	if (new_list == NULL)
+		goto error;
+	vec_init(new_list);
+
+	vec_for_each(hide_list, line) {
+		if (strcmp(line, proc) == 0) {
+			free(proc);
+			proc = line;
+			do_rm = 1;
+			continue;
+		}
+		vec_push_back(new_list, line);
+	}
+
+	if (do_rm) {
+		LOGI("hide_list rm: [%s]\n", proc);
+		ps_filter_proc_name(proc, kill_proc);
+		// Critical region
+		pthread_mutex_lock(&hide_lock);
+		vec_destroy(hide_list);
+		free(hide_list);
+		hide_list = new_list;
+		pthread_mutex_unlock(&hide_lock);
+
+		ret = DAEMON_SUCCESS;
+		pthread_mutex_lock(&file_lock);
+		vector_to_file(HIDELIST, hide_list); // Do not complain if file not found
+		pthread_mutex_unlock(&file_lock);
+	} else {
+		ret = HIDE_ITEM_NOT_EXIST;
+		vec_destroy(new_list);
+		free(new_list);
+	}
+
+error:
+	free(proc);
+	return ret;
+}
+
+int init_list() {
+	LOGD("hide_list: initialize...\n");
+	if ((hide_list = xmalloc(sizeof(*hide_list))) == NULL)
+		return 1;
+	vec_init(hide_list);
+
+	// Might error if file doesn't exist, no need to report
+	file_to_vector(HIDELIST, hide_list);
+
+	char *line;
+	vec_for_each(hide_list, line) {
+		LOGI("hide_list: [%s]\n", line);
+		ps_filter_proc_name(line, kill_proc);
+	}
+	return 0;
+}
+
+int destroy_list() {
+	char *line;
+	vec_for_each(hide_list, line) {
+		ps_filter_proc_name(line, kill_proc);
+	}
+	vec_deep_destroy(hide_list);
+	free(hide_list);
+	hide_list = NULL;
+	return 0;
+}
+
+void add_hide_list(int client) {
+	err_handler = do_nothing;
+	char *proc = read_string(client);
+	// ack
+	write_int(client, add_list(proc));
+	close(client);
+}
+
+void rm_hide_list(int client) {
+	err_handler = do_nothing;
+	char *proc = read_string(client);
+	// ack
+	write_int(client, rm_list(proc));
+	close(client);
+}
+
+void ls_hide_list(int client) {
+	err_handler = do_nothing;
+	if (!hideEnabled) {
+		write_int(client, HIDE_NOT_ENABLED);
+		return;
+	}
+	write_int(client, DAEMON_SUCCESS);
+	write_int(client, vec_size(hide_list));
+	char *s;
+	vec_for_each(hide_list, s) {
+		write_string(client, s);
+	}
+	close(client);
+}

jni/magiskhide/magiskhide.c

@@ -0,0 +1,168 @@
+/* magiskhide.c - initialize the environment for Magiskhide
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "magiskhide.h"
+#include "daemon.h"
+#include "resetprop.h"
+
+struct vector *hide_list = NULL;
+
+int hideEnabled = 0;
+static pthread_t proc_monitor_thread;
+pthread_mutex_t hide_lock, file_lock;
+
+void kill_proc(int pid) {
+	kill(pid, SIGTERM);
+}
+
+static void usage(char *arg0) {
+	fprintf(stderr,
+		"MagiskHide v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu) - Hide Magisk!\n\n"
+		"Usage: %s [--options [arguments...] ]\n\n"
+		"Options:\n"
+		"  --enable          Start magiskhide\n"
+		"  --disable         Stop magiskhide\n"
+		"  --add PROCESS     Add PROCESS to the hide list\n"
+		"  --rm PROCESS      Remove PROCESS from the hide list\n"
+		"  --ls              Print out the current hide list\n"
+		, arg0);
+	exit(1);
+}
+
+void launch_magiskhide(int client) {
+	// We manually handle crashes
+	err_handler = do_nothing;
+
+	if (hideEnabled) {
+		if (client > 0) {
+			write_int(client, HIDE_IS_ENABLED);
+			close(client);
+		}
+		return;
+	}
+
+	hideEnabled = 1;
+	LOGI("* Starting MagiskHide\n");
+
+	deleteprop(MAGISKHIDE_PROP, 1);
+
+	hide_sensitive_props();
+
+	// Initialize the mutex lock
+	pthread_mutex_init(&hide_lock, NULL);
+	pthread_mutex_init(&file_lock, NULL);
+
+	// Initialize the hide list
+	if (init_list())
+		goto error;
+
+	// Add SafetyNet by default
+	add_list(strdup("com.google.android.gms.unstable"));
+
+	if (client > 0) {
+		write_int(client, DAEMON_SUCCESS);
+		close(client);
+	}
+
+	// Get thread reference
+	proc_monitor_thread = pthread_self();
+	// Start monitoring
+	proc_monitor();
+	return;
+
+error:
+	hideEnabled = 0;
+	if (client > 0) {
+		write_int(client, DAEMON_ERROR);
+		close(client);
+	}
+	return;
+}
+
+void stop_magiskhide(int client) {
+	if (!hideEnabled) {
+		write_int(client, HIDE_NOT_ENABLED);
+		close(client);
+		return;
+	}
+
+	LOGI("* Stopping MagiskHide\n");
+
+	hideEnabled = 0;
+	setprop(MAGISKHIDE_PROP, "0");
+	// Remove without actually removing persist props
+	deleteprop(MAGISKHIDE_PROP, 0);
+	pthread_kill(proc_monitor_thread, SIGUSR1);
+
+	write_int(client, DAEMON_SUCCESS);
+	close(client);
+}
+
+int magiskhide_main(int argc, char *argv[]) {
+	if (argc < 2) {
+		usage(argv[0]);
+	}
+	client_request req = DO_NOTHING;
+	if (strcmp(argv[1], "--enable") == 0) {
+		req = LAUNCH_MAGISKHIDE;
+	} else if (strcmp(argv[1], "--disable") == 0) {
+		req = STOP_MAGISKHIDE;
+	} else if (strcmp(argv[1], "--add") == 0 && argc > 2) {
+		req = ADD_HIDELIST;
+	} else if (strcmp(argv[1], "--rm") == 0 && argc > 2) {
+		req = RM_HIDELIST;
+	} else if (strcmp(argv[1], "--ls") == 0) {
+		req = LS_HIDELIST;
+	}
+	int fd = connect_daemon();
+	write_int(fd, req);
+	if (req == ADD_HIDELIST || req == RM_HIDELIST) {
+		write_string(fd, argv[2]);
+	}
+	daemon_response code = read_int(fd);
+	switch (code) {
+	case DAEMON_ERROR:
+		fprintf(stderr, "Error occured in daemon...\n");
+		return code;
+	case DAEMON_SUCCESS:
+		break;
+	case ROOT_REQUIRED:
+		fprintf(stderr, "Root is required for this operation\n");
+		return code;
+	case HIDE_NOT_ENABLED:
+		fprintf(stderr, "Magisk hide is not enabled yet\n");
+		return code;
+	case HIDE_IS_ENABLED:
+		fprintf(stderr, "Magisk hide is already enabled\n");
+		return code;
+	case HIDE_ITEM_EXIST:
+		fprintf(stderr, "Process [%s] already exists in hide list\n", argv[2]);
+		return code;
+	case HIDE_ITEM_NOT_EXIST:
+		fprintf(stderr, "Process [%s] does not exist in hide list\n", argv[2]);
+		return code;
+	}
+
+	if (req == LS_HIDELIST) {
+		int argc = read_int(fd);
+		for (int i = 0; i < argc; ++i) {
+			char *s = read_string(fd);
+			printf("%s\n", s);
+			free(s);
+		}
+	}
+	close(fd);
+
+	return 0;
+}

jni/magiskhide/magiskhide.h

@@ -0,0 +1,28 @@
+#ifndef MAGISK_HIDE_H
+#define MAGISK_HIDE_H
+
+#include <pthread.h>
+
+// Kill process
+void kill_proc(int pid);
+
+// Process monitor
+void proc_monitor();
+
+// Utility functions
+void manage_selinux();
+void hide_sensitive_props();
+void relink_sbin();
+void clean_magisk_props();
+
+// List managements
+int add_list(char *proc);
+int rm_list(char *proc);
+int init_list();
+int destroy_list();
+
+extern int hideEnabled;
+extern struct vector *hide_list;
+extern pthread_mutex_t hide_lock, file_lock;
+
+#endif

jni/magiskhide/proc_monitor.c

@@ -0,0 +1,283 @@
+/* proc_monitor.c - Monitor am_proc_start events and unmount
+ *
+ * We monitor the logcat am_proc_start events. When a target starts up,
+ * we pause it ASAP, and fork a new process to join its mount namespace
+ * and do all the unmounting/mocking
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/mount.h>
+
+#include "magisk.h"
+#include "utils.h"
+#include "magiskhide.h"
+
+static int zygote_num;
+static char init_ns[32], zygote_ns[2][32], cache_block[256];
+static int log_pid, log_fd, target_pid, has_cache = 1;
+static char *buffer;
+
+// Workaround for the lack of pthread_cancel
+static void quit_pthread(int sig) {
+	err_handler = do_nothing;
+	LOGD("proc_monitor: running cleanup\n");
+	destroy_list();
+	free(buffer);
+	hideEnabled = 0;
+	// Kill the logging if needed
+	if (log_pid > 0) {
+		kill(log_pid, SIGTERM);
+		waitpid(log_pid, NULL, 0);
+		close(log_fd);
+	}
+	// Resume process if possible
+	if (target_pid > 0)
+		kill(target_pid, SIGCONT);
+	pthread_mutex_destroy(&hide_lock);
+	pthread_mutex_destroy(&file_lock);
+	LOGD("proc_monitor: terminating...\n");
+	pthread_exit(NULL);
+}
+
+static void proc_monitor_err() {
+	LOGD("proc_monitor: error occured, stopping magiskhide services\n");
+	quit_pthread(SIGUSR1);
+}
+
+static int read_namespace(const int pid, char* target, const size_t size) {
+	char path[32];
+	snprintf(path, sizeof(path), "/proc/%d/ns/mnt", pid);
+	if (access(path, R_OK) == -1)
+		return 1;
+	xreadlink(path, target, size);
+	return 0;
+}
+
+static void store_zygote_ns(int pid) {
+	if (zygote_num == 2) return;
+	do {
+		usleep(500);
+		read_namespace(pid, zygote_ns[zygote_num], 32);
+	} while (strcmp(zygote_ns[zygote_num], init_ns) == 0);
+	++zygote_num;
+}
+
+static void lazy_unmount(const char* mountpoint) {
+	if (umount2(mountpoint, MNT_DETACH) != -1)
+		LOGD("hide_daemon: Unmounted (%s)\n", mountpoint);
+	else
+		LOGD("hide_daemon: Unmount Failed (%s)\n", mountpoint);
+}
+
+static void hide_daemon_err() {
+	LOGD("hide_daemon: error occured, stopping magiskhide services\n");
+	_exit(-1);
+}
+
+static void hide_daemon(int pid) {
+	LOGD("hide_daemon: start unmount for pid=[%d]\n", pid);
+	// When an error occurs, report its failure to main process
+	err_handler = hide_daemon_err;
+
+	char *line;
+	struct vector mount_list;
+
+	manage_selinux();
+	relink_sbin();
+	clean_magisk_props();
+
+	if (switch_mnt_ns(pid))
+		return;
+
+	snprintf(buffer, PATH_MAX, "/proc/%d/mounts", pid);
+	vec_init(&mount_list);
+	file_to_vector(buffer, &mount_list);
+
+	// Find the cache block name if not found yet
+	if (has_cache && cache_block[0] == '\0') {
+		vec_for_each(&mount_list, line) {
+			if (strstr(line, " /cache ")) {
+				sscanf(line, "%256s", cache_block);
+				break;
+			}
+		}
+		if (strlen(cache_block) == 0)
+			has_cache = 0;
+	}
+
+	// Unmout cache mounts
+	if (has_cache) {
+		vec_for_each(&mount_list, line) {
+			if (strstr(line, cache_block) && (strstr(line, " /system/") || strstr(line, " /vendor/"))) {
+				sscanf(line, "%*s %4096s", buffer);
+				lazy_unmount(buffer);
+			}
+		}
+	}
+
+	// Unmount dummy skeletons, /sbin links, and mirrors
+	vec_for_each(&mount_list, line) {
+		if (strstr(line, "tmpfs /system") || strstr(line, "tmpfs /vendor") || strstr(line, "tmpfs /sbin") || strstr(line, MIRRDIR)) {
+			sscanf(line, "%*s %4096s", buffer);
+			lazy_unmount(buffer);
+		}
+		free(line);
+	}
+	vec_destroy(&mount_list);
+
+	// Re-read mount infos
+	snprintf(buffer, PATH_MAX, "/proc/%d/mounts", pid);
+	vec_init(&mount_list);
+	file_to_vector(buffer, &mount_list);
+
+	// Unmount any loop mounts
+	vec_for_each(&mount_list, line) {
+		if (strstr(line, "/dev/block/loop")) {
+			sscanf(line, "%*s %4096s", buffer);
+			lazy_unmount(buffer);
+		}
+		free(line);
+	}
+
+	// Free uo memory
+	vec_destroy(&mount_list);
+}
+
+void proc_monitor() {
+	// Register the cancel signal
+	struct sigaction act;
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = quit_pthread;
+	sigaction(SIGUSR1, &act, NULL);
+
+	// The error handler should stop magiskhide services
+	err_handler = proc_monitor_err;
+	log_pid = target_pid = -1;
+
+	buffer = xmalloc(PATH_MAX);
+	cache_block[0] = '\0';
+
+	// Get the mount namespace of init
+	if (read_namespace(1, init_ns, 32)) {
+		LOGE("proc_monitor: Your kernel doesn't support mount namespace :(\n");
+		proc_monitor_err();
+	}
+	LOGI("proc_monitor: init ns=%s\n", init_ns);
+
+	// Get the mount namespace of zygote
+	zygote_num = 0;
+	while(!zygote_num) {
+		// Check zygote every 2 secs
+		sleep(2);
+		ps_filter_proc_name("zygote", store_zygote_ns);
+	}
+	ps_filter_proc_name("zygote64", store_zygote_ns);
+
+	switch(zygote_num) {
+	case 1:
+		LOGI("proc_monitor: zygote ns=%s\n", zygote_ns[0]);
+		break;
+	case 2:
+		LOGI("proc_monitor: zygote ns=%s zygote64 ns=%s\n", zygote_ns[0], zygote_ns[1]);
+		break;
+	}
+
+	while (1) {
+		// Clear previous logcat buffer
+		exec_command_sync("logcat", "-b", "events", "-c", NULL);
+
+		// Monitor am_proc_start
+		log_fd = -1;
+		log_pid = exec_command(0, &log_fd, NULL, "logcat", "-b", "events", "-v", "raw", "-s", "am_proc_start", NULL);
+
+		if (log_pid < 0) continue;
+		if (kill(log_pid, 0)) continue;
+
+		while(fdgets(buffer, PATH_MAX, log_fd)) {
+			int pid, ret, comma = 0;
+			char *pos = buffer, *line, processName[256];
+
+			while(1) {
+				pos = strchr(pos, ',');
+				if(pos == NULL)
+					break;
+				pos[0] = ' ';
+				++comma;
+			}
+
+			if (comma == 6)
+				ret = sscanf(buffer, "[%*d %d %*d %*d %256s", &pid, processName);
+			else
+				ret = sscanf(buffer, "[%*d %d %*d %256s", &pid, processName);
+
+			if(ret != 2)
+				continue;
+
+			ret = 0;
+
+			// Critical region
+			pthread_mutex_lock(&hide_lock);
+			vec_for_each(hide_list, line) {
+				if (strcmp(processName, line) == 0) {
+					target_pid = pid;
+					while(1) {
+						ret = 1;
+						for (int i = 0; i < zygote_num; ++i) {
+							read_namespace(target_pid, buffer, 32);
+							if (strcmp(buffer, zygote_ns[i]) == 0) {
+								usleep(50);
+								ret = 0;
+								break;
+							}
+						}
+						if (ret) break;
+					}
+
+					// Send pause signal ASAP
+					if (kill(target_pid, SIGSTOP) == -1) continue;
+
+					LOGI("proc_monitor: %s (PID=%d ns=%s)\n", processName, target_pid, buffer);
+
+					/*
+					 * The setns system call do not support multithread processes
+					 * We have to fork a new process, setns, then do the unmounts
+					 */
+					int hide_pid = fork();
+					switch(hide_pid) {
+					case -1:
+						PLOGE("fork");
+						return;
+					case 0:
+						hide_daemon(target_pid);
+						_exit(0);
+					default:
+						break;
+					}
+
+					// Wait till the unmount process is done
+					waitpid(hide_pid, &ret, 0);
+					if (WEXITSTATUS(ret))
+						quit_pthread(SIGUSR1);
+
+					// All done, send resume signal
+					kill(target_pid, SIGCONT);
+					target_pid = -1;
+					break;
+				}
+			}
+			pthread_mutex_unlock(&hide_lock);
+		}
+
+		// For some reason it went here, restart logging
+		kill(log_pid, SIGTERM);
+		waitpid(log_pid, NULL, 0);
+		close(log_fd);
+	}
+}

jni/magiskinit.c

@@ -0,0 +1,405 @@
+/* magiskinit.c - Workaround for skip_initramfs devices
+ *
+ * This code has to be compiled statically to work properly.
+ *
+ * Magiskinit will mount sysfs, parse through uevent files to make the system block device,
+ * then it'll mount the system partition and clone rootfs except files under /system.
+ * Folders placed in "overlay" will then be overlayed to the root.
+ * Lastly, before giving control back to the real init, it'll patch the root files,
+ * extract (or compile if needed) sepolicy and patch it to load Magisk.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/mount.h>
+#include <sys/mman.h>
+#include <sys/sendfile.h>
+#include <sys/sysmacros.h>
+
+#include <cil/cil.h>
+
+#include "magiskpolicy.h"
+
+struct cmdline {
+	int skip_initramfs;
+	char slot[3];
+};
+
+struct device {
+	dev_t major;
+	dev_t minor;
+	char devname[32];
+	char partname[32];
+	char path[64];
+};
+
+extern policydb_t *policydb;
+
+extern void mmap_ro(const char *filename, void **buf, size_t *size);
+extern void mmap_rw(const char *filename, void **buf, size_t *size);
+extern void *patch_init_rc(char *data, uint32_t *size);
+
+static void clone_dir(int src, int dest) {
+	struct dirent *entry;
+	DIR *dir;
+	int srcfd, destfd, newsrc, newdest;
+	struct stat st;
+	char buf[PATH_MAX];
+	ssize_t size;
+
+	dir = fdopendir(src);
+	while ((entry = readdir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		fstatat(src, entry->d_name, &st, AT_SYMLINK_NOFOLLOW);
+		switch (entry->d_type) {
+		case DT_DIR:
+			mkdirat(dest, entry->d_name, st.st_mode & 0777);
+			fchownat(dest, entry->d_name, st.st_uid, st.st_gid, 0);
+			// Don't clone recursive if it's /system
+			if (strcmp(entry->d_name, "system") == 0)
+				continue;
+			newsrc = openat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
+			newdest = openat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
+			clone_dir(newsrc, newdest);
+			close(newsrc);
+			close(newdest);
+			break;
+		case DT_REG:
+			destfd = openat(dest, entry->d_name, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, st.st_mode & 0777);
+			srcfd = openat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
+			sendfile(destfd, srcfd, 0, st.st_size);
+			fchownat(dest, entry->d_name, st.st_uid, st.st_gid, 0);
+			close(destfd);
+			close(srcfd);
+			break;
+		case DT_LNK:
+			size = readlinkat(src, entry->d_name, buf, sizeof(buf));
+			buf[size] = '\0';
+			symlinkat(buf, dest, entry->d_name);
+			fchownat(dest, entry->d_name, st.st_uid, st.st_gid, AT_SYMLINK_NOFOLLOW);
+			break;
+		}
+	}
+}
+
+static void mv_dir(int src, int dest) {
+	struct dirent *entry;
+	DIR *dir;
+	int newsrc, newdest;
+	struct stat st;
+	char buf[PATH_MAX];
+	ssize_t size;
+
+	dir = fdopendir(src);
+	while ((entry = readdir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		fstatat(src, entry->d_name, &st, AT_SYMLINK_NOFOLLOW);
+		switch (entry->d_type) {
+		case DT_DIR:
+			mkdirat(dest, entry->d_name, st.st_mode & 0777);
+			fchownat(dest, entry->d_name, st.st_uid, st.st_gid, 0);
+			newsrc = openat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
+			newdest = openat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
+			mv_dir(newsrc, newdest);
+			close(newsrc);
+			close(newdest);
+			break;
+		case DT_REG:
+			renameat(src, entry->d_name, dest, entry->d_name);
+			fchmodat(dest, entry->d_name, st.st_mode & 0777, 0);
+			fchownat(dest, entry->d_name, st.st_uid, st.st_gid, 0);
+			break;
+		case DT_LNK:
+			size = readlinkat(src, entry->d_name, buf, sizeof(buf));
+			buf[size] = '\0';
+			symlinkat(buf, dest, entry->d_name);
+			fchownat(dest, entry->d_name, st.st_uid, st.st_gid, AT_SYMLINK_NOFOLLOW);
+			break;
+		}
+		unlinkat(src, entry->d_name, AT_REMOVEDIR);
+	}
+}
+
+static void rm_rf(int path) {
+	struct dirent *entry;
+	int newfd;
+	DIR *dir = fdopendir(path);
+
+	while ((entry = readdir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		switch (entry->d_type) {
+		case DT_DIR:
+			// Preserve overlay
+			if (strcmp(entry->d_name, "overlay") == 0)
+				continue;
+			newfd = openat(path, entry->d_name, O_RDONLY | O_CLOEXEC);
+			rm_rf(newfd);
+			close(newfd);
+			unlinkat(path, entry->d_name, AT_REMOVEDIR);
+			break;
+		default:
+			unlinkat(path, entry->d_name, 0);
+			break;
+		}
+	}
+}
+
+static void parse_cmdline(struct cmdline *cmd) {
+	char *tok;
+	char buffer[4096];
+	mkdir("/proc", 0555);
+	mount("proc", "/proc", "proc", 0, NULL);
+	int fd = open("/proc/cmdline", O_RDONLY | O_CLOEXEC);
+	ssize_t size = read(fd, buffer, sizeof(buffer));
+	buffer[size] = '\0';
+	close(fd);
+	umount("/proc");
+	tok = strtok(buffer, " ");
+	cmd->skip_initramfs = 0;
+	cmd->slot[0] = '\0';
+	while (tok != NULL) {
+		if (strncmp(tok, "androidboot.slot_suffix", 23) == 0) {
+			sscanf(tok, "androidboot.slot_suffix=%s", cmd->slot);
+		} else if (strcmp(tok, "skip_initramfs") == 0) {
+			cmd->skip_initramfs = 1;
+			break;
+		}
+		tok = strtok(NULL, " ");
+	}
+}
+
+static void parse_device(struct device *dev, char *uevent) {
+	char *tok;
+	tok = strtok(uevent, "\n");
+	while (tok != NULL) {
+		if (strncmp(tok, "MAJOR", 5) == 0) {
+			sscanf(tok, "MAJOR=%ld", (long*) &dev->major);
+		} else if (strncmp(tok, "MINOR", 5) == 0) {
+			sscanf(tok, "MINOR=%ld", (long*) &dev->minor);
+		} else if (strncmp(tok, "DEVNAME", 7) == 0) {
+			sscanf(tok, "DEVNAME=%s", dev->devname);
+		} else if (strncmp(tok, "PARTNAME", 8) == 0) {
+			sscanf(tok, "PARTNAME=%s", dev->partname);
+		}
+		tok = strtok(NULL, "\n");
+	}
+}
+
+static int setup_block(struct device *dev, const char *partname) {
+	char buffer[1024], path[128];
+	mkdir("/sys", 0755);
+	mount("sysfs", "/sys", "sysfs", 0, NULL);
+	struct dirent *entry;
+	DIR *dir = opendir("/sys/dev/block");
+	if (dir == NULL)
+		return 1;
+	int found = 0;
+	while ((entry = readdir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		snprintf(path, sizeof(path), "/sys/dev/block/%s/uevent", entry->d_name);
+		int fd = open(path, O_RDONLY | O_CLOEXEC);
+		ssize_t size = read(fd, buffer, sizeof(buffer));
+		buffer[size] = '\0';
+		close(fd);
+		parse_device(dev, buffer);
+		if (strcmp(dev->partname, partname) == 0) {
+			snprintf(dev->path, sizeof(dev->path), "/dev/block/%s", dev->devname);
+			found = 1;
+			break;
+		}
+	}
+	closedir(dir);
+
+	if (!found)
+		return 1;
+
+	mkdir("/dev", 0755);
+	mkdir("/dev/block", 0755);
+	mknod(dev->path, S_IFBLK | 0600, makedev(dev->major, dev->minor));
+	return 0;
+}
+
+static void patch_ramdisk() {
+	void *addr;
+	size_t size;
+	mmap_rw("/init", &addr, &size);
+	for (int i = 0; i < size; ++i) {
+		if (memcmp(addr + i, "/system/etc/selinux/plat_sepolicy.cil", 37) == 0) {
+			memcpy(addr + i, "/system/etc/selinux/plat_sepolicy.xxx", 37);
+			break;
+		}
+	}
+	munmap(addr, size);
+	mmap_rw("/init.rc", &addr, &size);
+	uint32_t new_size = size;
+	void *init_rc = patch_init_rc(addr, &new_size);
+	munmap(addr, size);
+	int fd = open("/init.rc", O_WRONLY | O_TRUNC | O_CLOEXEC);
+	write(fd, init_rc, new_size);
+	close(fd);
+	free(init_rc);
+}
+
+static int strend(const char *s1, const char *s2) {
+	int l1 = strlen(s1);
+	int l2 = strlen(s2);
+	return strcmp(s1 + l1 - l2, s2);
+}
+
+static void patch_sepolicy() {
+	DIR *dir;
+	struct dirent *entry;
+	char *sepolicy = NULL, path[128];
+	if (access("/system_root/sepolicy", R_OK) == 0)
+		sepolicy = "/system_root/sepolicy";
+	if (sepolicy == NULL && access("/vendor/etc/selinux/precompiled_sepolicy", R_OK) == 0) {
+		void *sys_sha = NULL, *ven_sha = NULL;
+		size_t sys_size = 0, ven_size = 0;
+		dir = opendir("/vendor/etc/selinux");
+		while ((entry = readdir(dir))) {
+			if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+				continue;
+			if (strend(entry->d_name, ".sha256") == 0) {
+				snprintf(path, sizeof(path), "/vendor/etc/selinux/%s", entry->d_name);
+				mmap_ro(path, &ven_sha, &ven_size);
+				break;
+			}
+		}
+		closedir(dir);
+		dir = opendir("/system/etc/selinux");
+		while ((entry = readdir(dir))) {
+			if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+				continue;
+			if (strend(entry->d_name, ".sha256") == 0) {
+				snprintf(path, sizeof(path), "/system/etc/selinux/%s", entry->d_name);
+				mmap_ro(path, &sys_sha, &sys_size);
+				break;
+			}
+		}
+		closedir(dir);
+		if (sys_size == ven_size && memcmp(sys_sha, ven_sha, sys_size) == 0)
+			sepolicy = "/vendor/etc/selinux/precompiled_sepolicy";
+		munmap(sys_sha, sys_size);
+		munmap(ven_sha, ven_size);
+	}
+
+	if (sepolicy) {
+		load_policydb(sepolicy);
+	} else {
+		// Compile cil
+		struct cil_db *db = NULL;
+		sepol_policydb_t *pdb = NULL;
+		void *addr;
+		size_t size;
+
+		cil_db_init(&db);
+		cil_set_mls(db, 1);
+		cil_set_target_platform(db, SEPOL_TARGET_SELINUX);
+		cil_set_policy_version(db, POLICYDB_VERSION_XPERMS_IOCTL);
+		cil_set_attrs_expand_generated(db, 0);
+
+		mmap_ro("/system/etc/selinux/plat_sepolicy.cil", &addr, &size);
+		cil_add_file(db, "/system/etc/selinux/plat_sepolicy.cil", addr, size);
+		munmap(addr, size);
+
+		dir = opendir("/system/etc/selinux/mapping");
+		while ((entry = readdir(dir))) {
+			if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+				continue;
+			if (strend(entry->d_name, ".cil") == 0) {
+				snprintf(path, sizeof(path), "/system/etc/selinux/mapping/%s", entry->d_name);
+				mmap_ro(path, &addr, &size);
+				cil_add_file(db, path, addr, size);
+				munmap(addr, size);
+			}
+		}
+		closedir(dir);
+
+		dir = opendir("/vendor/etc/selinux");
+		while ((entry = readdir(dir))) {
+			if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+				continue;
+			if (strend(entry->d_name, ".cil") == 0) {
+				snprintf(path, sizeof(path), "/vendor/etc/selinux/%s", entry->d_name);
+				mmap_ro(path, &addr, &size);
+				cil_add_file(db, path, addr, size);
+				munmap(addr, size);
+			}
+		}
+		closedir(dir);
+
+		cil_compile(db);
+		cil_build_policydb(db, &pdb);
+		cil_db_destroy(&db);
+
+		policydb = &pdb->p;
+	}
+
+	// Magisk patches
+	sepol_min_rules();
+	dump_policydb("/sepolicy");
+	destroy_policydb();
+}
+
+int main(int argc, char *argv[]) {
+	umask(0);
+
+	struct cmdline cmd;
+	parse_cmdline(&cmd);
+
+	if (cmd.skip_initramfs) {
+		// Normal boot mode
+		// Clear rootfs
+		int root = open("/", O_RDONLY | O_CLOEXEC);
+		rm_rf(root);
+
+		char partname[32];
+		snprintf(partname, sizeof(partname), "system%s", cmd.slot);
+
+		struct device dev;
+		setup_block(&dev, partname);
+
+		mkdir("/system_root", 0755);
+		mount(dev.path, "/system_root", "ext4", MS_RDONLY, NULL);
+		int system_root = open("/system_root", O_RDONLY | O_CLOEXEC);
+		clone_dir(system_root, root);
+		mount("/system_root/system", "/system", NULL, MS_BIND, NULL);
+
+		int overlay = open("/overlay", O_RDONLY | O_CLOEXEC);
+		if (overlay > 0)
+			mv_dir(overlay, root);
+
+		snprintf(partname, sizeof(partname), "vendor%s", cmd.slot);
+		setup_block(&dev, partname);
+		mount(dev.path, "/vendor", "ext4", MS_RDONLY, NULL);
+
+		patch_ramdisk();
+		patch_sepolicy();
+
+		close(root);
+		close(system_root);
+		close(overlay);
+		rmdir("/overlay");
+		umount("/vendor");
+	} else {
+		// Recovery mode
+		// Revert original init binary
+		unlink("/init");
+		rename("/.backup/init", "/init");
+	}
+
+	execv("/init", argv);
+
+	return 0;
+}

jni/repack.c

@@ -1,144 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/sendfile.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <assert.h>
-#include <string.h>
-
-#include "bootimgtools.h"
-
-off_t file_size(char *filename) {
-	struct stat st;
-	if(stat(filename, &st))
-		exit(1);
-	return st.st_size;
-}
-
-int append_file(int ofd, char *filename, off_t pos) {
-	lseek(ofd, pos, SEEK_SET);
-	int fd = open(filename, O_RDONLY);
-	int size = lseek(fd, 0, SEEK_END);
-	lseek(fd, 0, SEEK_SET);
-	sendfile(ofd, fd, NULL, size);
-	close(fd);
-	return size;
-}
-
-int append_ramdisk(int ofd, off_t pos) {
-	if(access("ramdisk-mtk", R_OK) == 0) {
-		char buf[512];
-		off_t size = file_size("ramdisk.gz");
-		memcpy(buf, "\x88\x16\x88\x58", 4);
-		uint32_t v = size;
-		memcpy(buf+4, &v, sizeof(v)); //Should convert to LE
-
-		//TODO: RECOVERY OR ROOTFS?
-		char str[32];
-		memset(str, 0, sizeof(str));
-		if(access("ramdisk-mtk-boot", R_OK)==0) {
-			strcpy(str, "ROOTFS");
-		} else if(access("ramdisk-mtk-recovery", R_OK)==0) {
-			strcpy(str, "RECOVERY");
-		} else {
-			exit(1);
-		}
-		memcpy(buf+8, str, sizeof(str));
-
-		memset(buf+8+sizeof(str), 0xff, 512-8-sizeof(str));
-
-		pwrite(ofd, buf, sizeof(buf), pos);
-
-		return append_file(ofd, "ramdisk.gz", pos + 512) + 512;
-	} else if(access("ramdisk.gz", R_OK) == 0) {
-		return append_file(ofd, "ramdisk.gz", pos);
-	} else {
-		return append_file(ofd, "ramdisk", pos);
-	}
-}
-
-void post_process(struct boot_img_hdr *hdr, int ofd, int pos) {
-	if(access("rkcrc", R_OK) == 0) {
-		fprintf(stderr, "Rockchip CRCs not supported yet\n");
-		exit(1);
-	}
-	//Round up the file size
-	ftruncate(ofd, pos);
-}
-
-int repack(char *image) {
-
-	//TODO: Merge with extract.c?
-	//{
-	int ifd = open(image, O_RDONLY);
-	off_t isize = lseek(ifd, 0, SEEK_END);
-	lseek(ifd, 0, SEEK_SET);
-	uint8_t *iorig = mmap(NULL, isize, PROT_READ, MAP_SHARED, ifd, 0);
-	uint8_t *ibase = iorig;
-	assert(ibase);
-
-	while(ibase<(iorig+isize)) {
-		if(memcmp(ibase, BOOT_MAGIC, BOOT_MAGIC_SIZE) == 0)
-			break;
-		ibase += 256;
-	}
-	assert(ibase < (iorig+isize));
-	//}
-	//
-	struct boot_img_hdr *ihdr = (struct boot_img_hdr*) ibase;
-	assert(
-			ihdr->page_size == 2048 ||
-			ihdr->page_size == 4096 ||
-			ihdr->page_size == 16384
-			);
-
-	unlink("new-boot.img");
-	int ofd = open("new-boot.img", O_RDWR|O_CREAT, 0644);
-	ftruncate(ofd, ihdr->page_size);
-	//Write back original header, we'll change it later
-	write(ofd, ihdr, sizeof(*ihdr));
-
-	struct boot_img_hdr *hdr = mmap(NULL, sizeof(*ihdr), PROT_READ|PROT_WRITE, MAP_SHARED, ofd, 0);
-	//First set everything to zero, so we know where we are at.
-	hdr->kernel_size = 0;
-	hdr->ramdisk_size = 0;
-	hdr->second_size = 0;
-	hdr->unused[0] = 0;
-	memset(hdr->id, 0, sizeof(hdr->id)); //Setting id to 0 might be wrong?
-
-	int pos = hdr->page_size;
-	int size = 0;
-
-	size = append_file(ofd, "kernel", pos);
-	pos += size + hdr->page_size - 1;
-	pos &= ~(hdr->page_size-1);
-	hdr->kernel_size = size;
-
-	size = append_ramdisk(ofd, pos);
-	pos += size + hdr->page_size - 1;
-	pos &= ~(hdr->page_size-1);
-	hdr->ramdisk_size = size;
-
-	if(access("second", R_OK) == 0) {
-		size = append_file(ofd, "second", pos);
-		pos += size + hdr->page_size - 1;
-		pos &= ~(hdr->page_size-1);
-		hdr->second_size = size;
-	}
-
-	if(access("dt", R_OK) == 0) {
-		size = append_file(ofd, "dt", pos);
-		pos += size + hdr->page_size - 1;
-		pos &= ~(hdr->page_size-1);
-		hdr->unused[0] = size;
-	}
-
-	post_process(hdr, ofd, pos);
-	munmap(hdr, sizeof(*ihdr));
-	close(ofd);
-
-	return 0;
-}

jni/resetprop/Android.mk

@@ -0,0 +1,8 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := resetprop
+LOCAL_SRC_FILES := resetprop.cpp system_properties.cpp libc_logging.cpp
+LOCAL_LDLIBS += -latomic
+LOCAL_CFLAGS := -Wno-implicit-exception-spec-mismatch -DINDEP_BINARY
+include $(BUILD_EXECUTABLE)

jni/resetprop/ErrnoRestorer.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ERRNO_RESTORER_H
+#define ERRNO_RESTORER_H
+
+#include <errno.h>
+
+#include "bionic_macros.h"
+
+class ErrnoRestorer {
+ public:
+  explicit ErrnoRestorer() : saved_errno_(errno) {
+  }
+
+  ~ErrnoRestorer() {
+    errno = saved_errno_;
+  }
+
+  void override(int new_errno) {
+    saved_errno_ = new_errno;
+  }
+
+ private:
+  int saved_errno_;
+
+  DISALLOW_COPY_AND_ASSIGN(ErrnoRestorer);
+};
+
+#endif // ERRNO_RESTORER_H

jni/resetprop/_system_properties.h

@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _INCLUDE_SYS__SYSTEM_PROPERTIES_H
+#define _INCLUDE_SYS__SYSTEM_PROPERTIES_H
+
+#include <sys/cdefs.h>
+#include <stdint.h>
+
+#ifndef _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#error you should #include <sys/system_properties.h> instead
+#endif
+
+// #include <sys/system_properties.h>
+#include "system_properties.h"
+
+__BEGIN_DECLS
+
+#define PROP_SERVICE_NAME "property_service"
+#define PROP_FILENAME "/dev/__properties__"
+
+#define PROP_MSG_SETPROP 1
+#define PROP_MSG_SETPROP2 0x00020001
+
+#define PROP_SUCCESS 0
+#define PROP_ERROR_READ_CMD 0x0004
+#define PROP_ERROR_READ_DATA 0x0008
+#define PROP_ERROR_READ_ONLY_PROPERTY 0x000B
+#define PROP_ERROR_INVALID_NAME 0x0010
+#define PROP_ERROR_INVALID_VALUE 0x0014
+#define PROP_ERROR_PERMISSION_DENIED 0x0018
+#define PROP_ERROR_INVALID_CMD 0x001B
+#define PROP_ERROR_HANDLE_CONTROL_MESSAGE 0x0020
+#define PROP_ERROR_SET_FAILED 0x0024
+
+/*
+** Map the property area from the specified filename.  This
+** method is for testing only.
+*/
+int __system_property_set_filename2(const char *filename);
+
+/*
+** Initialize the area to be used to store properties.  Can
+** only be done by a single process that has write access to
+** the property area.
+*/
+int __system_property_area_init2();
+
+/* Read the global serial number of the system properties
+**
+** Called to predict if a series of cached __system_property_find
+** objects will have seen __system_property_serial values change.
+** But also aids the converse, as changes in the global serial can
+** also be used to predict if a failed __system_property_find
+** could in-turn now find a new object; thus preventing the
+** cycles of effort to poll __system_property_find.
+**
+** Typically called at beginning of a cache cycle to signal if _any_ possible
+** changes have occurred since last. If there is, one may check each individual
+** __system_property_serial to confirm dirty, or __system_property_find
+** to check if the property now exists. If a call to __system_property_add
+** or __system_property_update has completed between two calls to
+** __system_property_area_serial then the second call will return a larger
+** value than the first call. Beware of race conditions as changes to the
+** properties are not atomic, the main value of this call is to determine
+** whether the expensive __system_property_find is worth retrying to see if
+** a property now exists.
+**
+** Returns the serial number on success, -1 on error.
+*/
+uint32_t __system_property_area_serial2();
+
+/* Add a new system property.  Can only be done by a single
+** process that has write access to the property area, and
+** that process must handle sequencing to ensure the property
+** does not already exist and that only one property is added
+** or updated at a time.
+**
+** Returns 0 on success, -1 if the property area is full.
+*/
+int __system_property_add2(const char *name, unsigned int namelen, const char *value, unsigned int valuelen);
+
+/* Delete a new system property. Added in resetprop
+**
+** Returns 0 on success, -1 if the property area is full.
+*/
+int __system_property_del(const char *name);
+
+/* Update the value of a system property returned by
+** __system_property_find.  Can only be done by a single process
+** that has write access to the property area, and that process
+** must handle sequencing to ensure that only one property is
+** updated at a time.
+**
+** Returns 0 on success, -1 if the parameters are incorrect.
+*/
+int __system_property_update2(prop_info *pi, const char *value, unsigned int len);
+
+/* Read the serial number of a system property returned by
+** __system_property_find.
+**
+** Returns the serial number on success, -1 on error.
+*/
+uint32_t __system_property_serial2(const prop_info* pi);
+
+/* Initialize the system properties area in read only mode.
+ * Should be done by all processes that need to read system
+ * properties.
+ *
+ * Returns 0 on success, -1 otherwise.
+ */
+int __system_properties_init2();
+
+/* Deprecated: use __system_property_wait instead. */
+uint32_t __system_property_wait_any2(uint32_t old_serial);
+
+__END_DECLS
+
+#endif

jni/resetprop/bionic_futex.h

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _BIONIC_FUTEX_H
+#define _BIONIC_FUTEX_H
+
+#include <errno.h>
+#include <linux/futex.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/cdefs.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+__BEGIN_DECLS
+
+struct timespec;
+
+static inline __always_inline int __futex(volatile void* ftx, int op, int value,
+                                          const struct timespec* timeout,
+                                          int bitset) {
+  // Our generated syscall assembler sets errno, but our callers (pthread functions) don't want to.
+  int saved_errno = errno;
+  int result = syscall(__NR_futex, ftx, op, value, timeout, NULL, bitset);
+  if (__predict_false(result == -1)) {
+    result = -errno;
+    errno = saved_errno;
+  }
+  return result;
+}
+
+static inline int __futex_wake(volatile void* ftx, int count) {
+  return __futex(ftx, FUTEX_WAKE, count, NULL, 0);
+}
+
+static inline int __futex_wake_ex(volatile void* ftx, bool shared, int count) {
+  return __futex(ftx, shared ? FUTEX_WAKE : FUTEX_WAKE_PRIVATE, count, NULL, 0);
+}
+
+static inline int __futex_wait(volatile void* ftx, int value, const struct timespec* timeout) {
+  return __futex(ftx, FUTEX_WAIT, value, timeout, 0);
+}
+
+static inline int __futex_wait_ex(volatile void* ftx, bool shared, int value,
+                                  bool use_realtime_clock, const struct timespec* abs_timeout) {
+  return __futex(ftx, (shared ? FUTEX_WAIT_BITSET : FUTEX_WAIT_BITSET_PRIVATE) |
+                 (use_realtime_clock ? FUTEX_CLOCK_REALTIME : 0), value, abs_timeout,
+                 FUTEX_BITSET_MATCH_ANY);
+}
+
+__END_DECLS
+
+#endif /* _BIONIC_FUTEX_H */

jni/resetprop/bionic_lock.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _BIONIC_LOCK_H
+#define _BIONIC_LOCK_H
+
+#include <stdatomic.h>
+#include "bionic_futex.h"
+#include "bionic_macros.h"
+
+// Lock is used in places like pthread_rwlock_t, which can be initialized without calling
+// an initialization function. So make sure Lock can be initialized by setting its memory to 0.
+class Lock {
+ private:
+  enum LockState {
+    Unlocked = 0,
+    LockedWithoutWaiter,
+    LockedWithWaiter,
+  };
+  _Atomic(LockState) state;
+  bool process_shared;
+
+ public:
+  void init(bool process_shared) {
+    atomic_init(&state, Unlocked);
+    this->process_shared = process_shared;
+  }
+
+  bool trylock() {
+    LockState old_state = Unlocked;
+    return __predict_true(atomic_compare_exchange_strong_explicit(&state, &old_state,
+                        LockedWithoutWaiter, memory_order_acquire, memory_order_relaxed));
+  }
+
+  void lock() {
+    LockState old_state = Unlocked;
+    if (__predict_true(atomic_compare_exchange_strong_explicit(&state, &old_state,
+                         LockedWithoutWaiter, memory_order_acquire, memory_order_relaxed))) {
+      return;
+    }
+    while (atomic_exchange_explicit(&state, LockedWithWaiter, memory_order_acquire) != Unlocked) {
+      // TODO: As the critical section is brief, it is a better choice to spin a few times befor sleeping.
+      __futex_wait_ex(&state, process_shared, LockedWithWaiter, false, nullptr);
+    }
+    return;
+  }
+
+  void unlock() {
+    if (atomic_exchange_explicit(&state, Unlocked, memory_order_release) == LockedWithWaiter) {
+      __futex_wake_ex(&state, process_shared, 1);
+    }
+  }
+};
+
+#endif  // _BIONIC_LOCK_H

jni/resetprop/bionic_macros.h

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _BIONIC_MACROS_H_
+#define _BIONIC_MACROS_H_
+
+#include <stdint.h>
+
+// Frameworks OpenGL code currently leaks this header and allows
+// collisions with other declarations, e.g., from libnativehelper.
+// TODO: Remove once cleaned up. b/18334516
+#if !defined(DISALLOW_COPY_AND_ASSIGN)
+// DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions.
+// It goes in the private: declarations in a class.
+#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
+  TypeName(const TypeName&) = delete;      \
+  void operator=(const TypeName&) = delete
+#endif  // !defined(DISALLOW_COPY_AND_ASSIGN)
+
+// A macro to disallow all the implicit constructors, namely the
+// default constructor, copy constructor and operator= functions.
+//
+// This should be used in the private: declarations for a class
+// that wants to prevent anyone from instantiating it. This is
+// especially useful for classes containing only static methods.
+#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
+  TypeName() = delete;                           \
+  DISALLOW_COPY_AND_ASSIGN(TypeName)
+
+#define BIONIC_ALIGN(value, alignment) \
+  (((value) + (alignment) - 1) & ~((alignment) - 1))
+
+#define BIONIC_ROUND_UP_POWER_OF_2(value) \
+  ((sizeof(value) == 8) \
+    ? (1UL << (64 - __builtin_clzl(static_cast<unsigned long>(value)))) \
+    : (1UL << (32 - __builtin_clz(static_cast<unsigned int>(value)))))
+
+static constexpr uintptr_t align_down(uintptr_t p, size_t align) {
+  return p & ~(align - 1);
+}
+
+static constexpr uintptr_t align_up(uintptr_t p, size_t align) {
+  return (p + align - 1) & ~(align - 1);
+}
+
+template <typename T>
+static inline T* align_down(T* p, size_t align) {
+  return reinterpret_cast<T*>(align_down(reinterpret_cast<uintptr_t>(p), align));
+}
+
+template <typename T>
+static inline T* align_up(T* p, size_t align) {
+  return reinterpret_cast<T*>(align_up(reinterpret_cast<uintptr_t>(p), align));
+}
+
+#endif // _BIONIC_MACROS_H_

jni/resetprop/resetprop.cpp

@@ -0,0 +1,304 @@
+/* resetprop.cpp - Manipulate any system props
+ *
+ * Copyright 2016 nkk71     <nkk71x@gmail.com>
+ * Copyright 2016 topjohnwu <topjohnwu@gmail.com>
+ *
+ * Info:
+ *
+ * all changes are in
+ *
+ * bionic/libc/bionic/system_properties.cpp
+ *
+ * Functions that need to be patched/added in system_properties.cpp
+ *
+ * int __system_properties_init2()
+ *     on android 7, first tear down the everything then let it initialize again:
+ *         if (initialized) {
+ *             //list_foreach(contexts, [](context_node* l) { l->reset_access(); });
+ *             //return 0;
+ *             free_and_unmap_contexts();
+ *             initialized = false;
+ *         }
+ *
+ *
+ * static prop_area* map_prop_area(const char* filename, bool is_legacy)
+ *     we dont want this read only so change: 'O_RDONLY' to 'O_RDWR'
+ *
+ * static prop_area* map_fd_ro(const int fd)
+ *     we dont want this read only so change: 'PROT_READ' to 'PROT_READ | PROT_WRITE'
+ *
+ *
+ * Copy the code of prop_info *prop_area::find_property, and modify to delete props
+ * const prop_info *prop_area::find_property_and_del(prop_bt *const trie, const char *name)
+ * {
+ *    ...
+ *    ...  Do not alloc a new prop_bt here, remove all code involve alloc_if_needed
+ *    ...
+ *
+ *     if (prop_offset != 0) {
+ *         atomic_store_explicit(&current->prop, 0, memory_order_release); // Add this line to nullify the prop entry
+ *         return to_prop_info(&current->prop);
+ *     } else {
+ *
+ *    ....
+ * }
+ *
+ *
+ * by patching just those functions directly, all other functions should be ok
+ * as is.
+ *
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include "_system_properties.h"
+#include "system_properties.h"
+#include "magisk.h"
+#include "resetprop.h"
+
+#define PRINT_D(...)  { LOGD(__VA_ARGS__); if (verbose) printf(__VA_ARGS__); }
+#define PRINT_E(...)  { LOGE(__VA_ARGS__); fprintf(stderr, __VA_ARGS__); }
+#define PERSISTENT_PROPERTY_DIR  "/data/property"
+
+static int verbose = 0;
+
+static bool is_legal_property_name(const char *name, size_t namelen) {
+
+    if (namelen < 1) return false;
+    if (name[0] == '.') return false;
+    if (name[namelen - 1] == '.') return false;
+
+    /* Only allow alphanumeric, plus '.', '-', '@', ':', or '_' */
+    /* Don't allow ".." to appear in a property name */
+    for (size_t i = 0; i < namelen; i++) {
+        if (name[i] == '.') {
+            // i=0 is guaranteed to never have a dot. See above.
+            if (name[i-1] == '.') return false;
+            continue;
+        }
+        if (name[i] == '_' || name[i] == '-' || name[i] == '@' || name[i] == ':') continue;
+        if (name[i] >= 'a' && name[i] <= 'z') continue;
+        if (name[i] >= 'A' && name[i] <= 'Z') continue;
+        if (name[i] >= '0' && name[i] <= '9') continue;
+        return false;
+    }
+
+    return true;
+}
+
+static int usage(char* arg0) {
+    fprintf(stderr,
+        "resetprop v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") (by topjohnwu & nkk71) - System Props Modification Tool\n\n"
+        "Usage: %s [options] [args...]\n"
+        "\n"
+        "Options:\n"
+        "   -v      show verbose output\n"
+        "   -n      only modify property in memory\n"
+        "\n"
+        "%s  NAME VALUE        set property entry NAME with VALUE\n"
+        "%s  --file FILE       load props from FILE\n"
+        "%s  --delete NAME     remove prop entry NAME\n"
+        "\n"
+
+    , arg0, arg0, arg0, arg0);
+    return 1;
+}
+
+static int init_resetprop() {
+    if (__system_properties_init2()) {
+        PRINT_E("resetprop: Initialize error\n");
+        return -1;
+    }
+    return 0;
+}
+
+int prop_exist(const char *name) {
+    if (init_resetprop()) return 0;
+    return __system_property_find2(name) != NULL;
+}
+
+static void read_prop_info(void* cookie, const char *name, const char *value, uint32_t serial) {
+    strcpy((char *) cookie, value);
+}
+
+// Get prop by name, return string (should free manually!)
+char *getprop(const char *name) {
+    if (init_resetprop()) return NULL;
+    const prop_info *pi = __system_property_find2(name);
+    if (pi == NULL) {
+        PRINT_D("resetprop: prop [%s] does not exist\n", name);
+        return NULL;
+    }
+    char value[PROP_VALUE_MAX];
+    __system_property_read_callback2(pi, read_prop_info, value);
+    PRINT_D("resetprop: getprop [%s]: [%s]\n", name, value);
+    return strdup(value);
+}
+
+static void (*cb)(const char *);
+
+static void run_actual_cb(void* cookie, const char *name, const char *value, uint32_t serial) {
+    cb(name);
+}
+
+static void prop_foreach_cb(const prop_info* pi, void* cookie) {
+    __system_property_read_callback2(pi, run_actual_cb, NULL);
+}
+
+void getprop_all(void (*cbk)(const char *name)) {
+    if (init_resetprop()) return;
+    cb = cbk;
+    __system_property_foreach2(prop_foreach_cb, NULL);
+}
+
+int setprop(const char *name, const char *value) {
+    return setprop2(name, value, 1);
+}
+
+int setprop2(const char *name, const char *value, const int trigger) {
+    if (init_resetprop()) return -1;
+    int ret;
+
+    prop_info *pi = (prop_info*) __system_property_find2(name);
+    if (pi != NULL) {
+        if (trigger) {
+            if (!strncmp(name, "ro.", 3)) deleteprop(name, trigger);
+            ret = __system_property_set2(name, value);
+        } else {
+            ret = __system_property_update2(pi, value, strlen(value));
+        }
+    } else {
+        PRINT_D("resetprop: New prop [%s]\n", name);
+        if (trigger) {
+            ret = __system_property_set2(name, value);
+        } else {
+            ret = __system_property_add2(name, strlen(name), value, strlen(value));
+        }
+    }
+
+    PRINT_D("resetprop: setprop [%s]: [%s] by %s\n", name, value,
+        trigger ? "property_service" : "modifing prop data structure");
+
+    if (ret)
+        PRINT_E("resetprop: setprop error\n");
+
+    return ret;
+}
+
+int deleteprop(const char *name, const int trigger) {
+    if (init_resetprop()) return -1;
+    PRINT_D("resetprop: deleteprop [%s]\n", name);
+    if (trigger && strstr(name, "persist.")) {
+        char buffer[PATH_MAX];
+        snprintf(buffer, sizeof(buffer), "%s/%s", PERSISTENT_PROPERTY_DIR, name);
+        unlink(buffer);
+    }
+    return __system_property_del(name);
+}
+
+int read_prop_file(const char* filename, const int trigger) {
+    if (init_resetprop()) return -1;
+    PRINT_D("resetprop: Load prop file [%s]\n", filename);
+    FILE *fp = fopen(filename, "r");
+    if (fp == NULL) {
+        PRINT_E("Cannot open [%s]\n", filename);
+        return 1;
+    }
+    char *line = NULL, *pch;
+    size_t len;
+    ssize_t read;
+    int comment = 0, i;
+    while ((read = getline(&line, &len, fp)) != -1) {
+        // Remove the trailing newline
+        if (line[read - 1] == '\n') {
+            line[read - 1] = '\0';
+            --read;
+        }
+        comment = 0;
+        for (i = 0; i < read; ++i) {
+            // Ignore starting spaces
+            if (line[i] == ' ') continue;
+            else {
+                // A line starting with # is ignored
+                if (line[i] == '#') comment = 1;
+                break;
+            }
+        }
+        if (comment) continue;
+        pch = strchr(line, '=');
+        // Ignore ivalid formats
+        if ( ((pch == NULL) || (i >= (pch - line))) || (pch >= line + read - 1) ) continue;
+        // Separate the string
+        *pch = '\0';
+        setprop2(line + i, pch + 1, trigger);
+    }
+    free(line);
+    fclose(fp);
+    return 0;
+}
+
+int resetprop_main(int argc, char *argv[]) {
+
+    int del = 0, file = 0, trigger = 1;
+
+    int exp_arg = 2;
+    char *name, *value, *filename;
+
+    if (argc < 3) {
+        return usage(argv[0]);
+    }
+
+    for (int i = 1; i < argc; ++i) {
+        if (!strcmp("-v", argv[i])) {
+            verbose = 1;
+        } else if (!strcmp("-n", argv[i])) {
+            trigger = 0;
+        } else if (!strcmp("--file", argv[i])) {
+            file = 1;
+            exp_arg = 1;
+        } else if (!strcmp("--delete", argv[i])) {
+            del = 1;
+            exp_arg = 1;
+        } else {
+            if (i + exp_arg > argc) {
+                return usage(argv[0]);
+            }
+            if (file) {
+                filename = argv[i];
+                break;
+            } else {
+                if(!is_legal_property_name(argv[i], strlen(argv[i]))) {
+                    PRINT_E("Illegal property name: [%s]\n", argv[i]);
+                    return 1;
+                }
+                name = argv[i];
+                if (exp_arg > 1) {
+                    if (strlen(argv[i + 1]) >= PROP_VALUE_MAX) {
+                        PRINT_E("Value too long: [%s]\n", argv[i + 1]);
+                        return 1;
+                    }
+                    value = argv[i + 1];
+                }
+                break;
+            }
+        }
+    }
+
+    if (file) {
+        return read_prop_file(filename, trigger);
+    } else if (del) {
+        return deleteprop(name, trigger);
+    } else {
+        return setprop2(name, value, trigger);
+    }
+
+    return 0;
+}

jni/resetprop/system_properties.h

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _INCLUDE_SYS_SYSTEM_PROPERTIES_H
+#define _INCLUDE_SYS_SYSTEM_PROPERTIES_H
+
+#include <sys/cdefs.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+__BEGIN_DECLS
+
+typedef struct prop_info prop_info;
+
+#define PROP_VALUE_MAX  92
+
+/*
+ * Sets system property `key` to `value`, creating the system property if it doesn't already exist.
+ */
+int __system_property_set2(const char* key, const char* value) __INTRODUCED_IN(12);
+
+/*
+ * Returns a `prop_info` corresponding system property `name`, or nullptr if it doesn't exist.
+ * Use __system_property_read_callback to query the current value.
+ *
+ * Property lookup is expensive, so it can be useful to cache the result of this function.
+ */
+const prop_info* __system_property_find2(const char* name);
+
+/*
+ * Calls `callback` with a consistent trio of name, value, and serial number for property `pi`.
+ */
+void __system_property_read_callback2(const prop_info *pi,
+    void (*callback)(void* cookie, const char *name, const char *value, uint32_t serial),
+    void* cookie) __INTRODUCED_IN(26);
+
+/*
+ * Passes a `prop_info` for each system property to the provided
+ * callback.  Use __system_property_read_callback() to read the value.
+ *
+ * This method is for inspecting and debugging the property system, and not generally useful.
+ */
+int __system_property_foreach2(void (*propfn)(const prop_info* pi, void* cookie), void* cookie)
+  __INTRODUCED_IN(19);
+
+/*
+ * Waits for the specific system property identified by `pi` to be updated
+ * past `old_serial`. Waits no longer than `relative_timeout`, or forever
+ * if `relaive_timeout` is null.
+ *
+ * If `pi` is null, waits for the global serial number instead.
+ *
+ * If you don't know the current serial, use 0.
+ *
+ * Returns true and updates `*new_serial_ptr` on success, or false if the call
+ * timed out.
+ */
+struct timespec;
+bool __system_property_wait2(const prop_info* pi,
+                            uint32_t old_serial,
+                            uint32_t* new_serial_ptr,
+                            const struct timespec* relative_timeout)
+    __INTRODUCED_IN(26);
+
+/* Deprecated. In Android O and above, there's no limit on property name length. */
+#define PROP_NAME_MAX   32
+/* Deprecated. Use __system_property_read_callback instead. */
+int __system_property_read2(const prop_info* pi, char* name, char* value);
+/* Deprecated. Use __system_property_read_callback instead. */
+int __system_property_get2(const char* name, char* value);
+/* Deprecated. Use __system_property_foreach instead. */
+const prop_info* __system_property_find_nth2(unsigned n);
+
+__END_DECLS
+
+#endif

jni/utils/img.c

@@ -0,0 +1,212 @@
+/* img.c - All image related functions
+ */
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/mount.h>
+#include <linux/loop.h>
+
+#include "magisk.h"
+#include "utils.h"
+
+static int e2fsck(const char *img) {
+	// Check and repair ext4 image
+	char buffer[128];
+	int pid, fd = -1;
+	pid = exec_command(1, &fd, NULL, "e2fsck", "-yf", img, NULL);
+	if (pid < 0)
+		return 1;
+	while (fdgets(buffer, sizeof(buffer), fd))
+		LOGD("magisk_img: %s", buffer);
+	waitpid(pid, NULL, 0);
+	close(fd);
+	return 0;
+}
+
+static char *loopsetup(const char *img) {
+	char device[20];
+	struct loop_info64 info;
+	int i, lfd, ffd;
+	memset(&info, 0, sizeof(info));
+	// First get an empty loop device
+	for (i = 0; i <= 7; ++i) {
+		sprintf(device, "/dev/block/loop%d", i);
+		lfd = xopen(device, O_RDWR);
+		if (ioctl(lfd, LOOP_GET_STATUS64, &info) == -1)
+			break;
+		close(lfd);
+	}
+	if (i == 8) return NULL;
+	ffd = xopen(img, O_RDWR);
+	if (ioctl(lfd, LOOP_SET_FD, ffd) == -1)
+		return NULL;
+	strcpy((char *) info.lo_file_name, img);
+	ioctl(lfd, LOOP_SET_STATUS64, &info);
+	close(lfd);
+	close(ffd);
+	return strdup(device);
+}
+
+int create_img(const char *img, int size) {
+	unlink(img);
+	LOGI("Create %s with size %dM\n", img, size);
+	// Create a temp file with the file contexts
+	char file_contexts[] = "/magisk(/.*)? u:object_r:system_file:s0\n";
+	// If not root, attempt to create in current diretory
+	char *filename = getuid() == UID_ROOT ? "/dev/file_contexts_image" : "file_contexts_image";
+	int ret, fd = xopen(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+	xwrite(fd, file_contexts, sizeof(file_contexts));
+	close(fd);
+
+	char buffer[16];
+	snprintf(buffer, sizeof(buffer), "%dM", size);
+	ret = exec_command_sync("make_ext4fs", "-l", buffer, "-a", "/magisk", "-S", filename, img, NULL);
+	if (ret < 0)
+		return 1;
+	unlink(filename);
+	return ret;
+}
+
+int get_img_size(const char *img, int *used, int *total) {
+	if (access(img, R_OK) == -1)
+		return 1;
+	char buffer[PATH_MAX];
+	int pid, fd = -1, status = 1;
+	pid = exec_command(1, &fd, NULL, "e2fsck", "-n", img, NULL);
+	if (pid < 0)
+		return 1;
+	while (fdgets(buffer, sizeof(buffer), fd)) {
+		if (strstr(buffer, img)) {
+			char *tok = strtok(buffer, ",");
+			while(tok != NULL) {
+				if (strstr(tok, "blocks")) {
+					status = 0;
+					break;
+				}
+				tok = strtok(NULL, ",");
+			}
+			if (status) continue;
+			sscanf(tok, "%d/%d", used, total);
+			*used = *used / 256 + 1;
+			*total /= 256;
+			break;
+		}
+	}
+	close(fd);
+	waitpid(pid, NULL, 0);
+	return 0;
+}
+
+int resize_img(const char *img, int size) {
+	LOGI("Resize %s to %dM\n", img, size);
+	if (e2fsck(img))
+		return 1;
+	char buffer[128];
+	int pid, status, fd = -1;
+	snprintf(buffer, sizeof(buffer), "%dM", size);
+	pid = exec_command(1, &fd, NULL, "resize2fs", img, buffer, NULL);
+	if (pid < 0)
+		return 1;
+	while (fdgets(buffer, sizeof(buffer), fd))
+		LOGD("magisk_img: %s", buffer);
+	close(fd);
+	waitpid(pid, &status, 0);
+	return WEXITSTATUS(status);
+}
+
+char *mount_image(const char *img, const char *target) {
+	if (access(img, F_OK) == -1)
+		return NULL;
+	if (access(target, F_OK) == -1) {
+		if (xmkdir(target, 0755) == -1) {
+			xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
+			xmkdir(target, 0755);
+			xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
+		}
+	}
+
+	if (e2fsck(img))
+		return NULL;
+
+	char *device = loopsetup(img);
+	if (device)
+		xmount(device, target, "ext4", 0, NULL);
+	return device;
+}
+
+void umount_image(const char *target, const char *device) {
+	xumount(target);
+	int fd = xopen(device, O_RDWR);
+	ioctl(fd, LOOP_CLR_FD);
+	close(fd);
+}
+
+int merge_img(const char *source, const char *target) {
+	if (access(source, F_OK) == -1)
+		return 0;
+	if (access(target, F_OK) == -1) {
+		rename(source, target);
+		return 0;
+	}
+
+	char buffer[PATH_MAX];
+
+	// resize target to worst case
+	int s_used, s_total, t_used, t_total, n_total;
+	get_img_size(source, &s_used, &s_total);
+	get_img_size(target, &t_used, &t_total);
+	n_total = round_size(s_used + t_used);
+	if (n_total != t_total)
+		resize_img(target, n_total);
+
+	xmkdir(SOURCE_TMP, 0755);
+	xmkdir(TARGET_TMP, 0755);
+	char *s_loop, *t_loop;
+	s_loop = mount_image(source, SOURCE_TMP);
+	if (s_loop == NULL) return 1;
+	t_loop = mount_image(target, TARGET_TMP);
+	if (t_loop == NULL) return 1;
+
+	DIR *dir;
+	struct dirent *entry;
+	if (!(dir = opendir(SOURCE_TMP)))
+		return 1;
+	while ((entry = xreaddir(dir))) {
+		if (entry->d_type == DT_DIR) {
+			if (strcmp(entry->d_name, ".") == 0 ||
+				strcmp(entry->d_name, "..") == 0 ||
+				strcmp(entry->d_name, ".core") == 0 ||
+				strcmp(entry->d_name, "lost+found") == 0)
+				continue;
+			// Cleanup old module if exists
+			snprintf(buffer, sizeof(buffer), "%s/%s", TARGET_TMP, entry->d_name);
+			if (access(buffer, F_OK) == 0) {
+				LOGI("Upgrade module: %s\n", entry->d_name);
+				exec_command_sync(BBPATH "/rm", "-rf", buffer, NULL);
+			} else {
+				LOGI("New module: %s\n", entry->d_name);
+			}
+		}
+	}
+	closedir(dir);
+	cp_afc(SOURCE_TMP, TARGET_TMP);
+
+	// Unmount all loop devices
+	umount_image(SOURCE_TMP, s_loop);
+	umount_image(TARGET_TMP, t_loop);
+	rmdir(SOURCE_TMP);
+	rmdir(TARGET_TMP);
+	free(s_loop);
+	free(t_loop);
+	unlink(source);
+	return 0;
+}
+
+void trim_img(const char *img) {
+	int used, total, new_size;
+	get_img_size(img, &used, &total);
+	new_size = round_size(used);
+	if (new_size != total)
+		resize_img(img, new_size);
+}

jni/utils/list.c

@@ -0,0 +1,42 @@
+/* list.h - Double link list implementation
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "list.h"
+
+void init_list_head(struct list_head *head) {
+	head->next = head;
+	head->prev = head;
+}
+
+void list_insert(struct list_head *pos, struct list_head *node) {
+	// First construct our new node
+	node->next = pos->next;
+	node->prev = pos;
+	// Maintain the list
+	pos->next->prev = node;
+	pos->next = node;
+}
+
+void list_insert_end(struct list_head *head, struct list_head *node) {
+	list_insert(head->prev, node);
+}
+
+struct list_head *list_pop(struct list_head *pos) {
+	struct list_head *ret;
+	ret = pos->prev;
+	// Maintain the list
+	pos->prev->next = pos->next;
+	pos->next->prev = pos->prev;
+	// Remove references
+	pos->next = pos;
+	pos->prev = pos;
+	// Return the previous node in the list
+	return ret;
+}
+
+struct list_head *list_pop_end(struct list_head *head) {
+	return list_pop(head->prev);
+}

jni/utils/misc.c

@@ -0,0 +1,417 @@
+/* misc.c - Store all functions that are unable to be catagorized clearly
+ */
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <signal.h>
+#include <errno.h>
+#include <sched.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <selinux/selinux.h>
+
+#include "logging.h"
+#include "utils.h"
+
+int quit_signals[] = { SIGALRM, SIGABRT, SIGHUP, SIGPIPE, SIGQUIT, SIGTERM, SIGINT, 0 };
+
+unsigned get_shell_uid() {
+	struct passwd* ppwd = getpwnam("shell");
+	if (NULL == ppwd)
+		return 2000;
+
+	return ppwd->pw_uid;
+}
+
+unsigned get_system_uid() {
+	struct passwd* ppwd = getpwnam("system");
+	if (NULL == ppwd)
+		return 1000;
+
+	return ppwd->pw_uid;
+}
+
+unsigned get_radio_uid() {
+	struct passwd* ppwd = getpwnam("radio");
+	if (NULL == ppwd)
+		return 1001;
+
+	return ppwd->pw_uid;
+}
+
+int check_data() {
+	int ret = 0;
+	char buffer[4096];
+	FILE *fp = xfopen("/proc/mounts", "r");
+	while (fgets(buffer, sizeof(buffer), fp)) {
+		if (strstr(buffer, " /data ")) {
+			if (strstr(buffer, "tmpfs") == NULL)
+				ret = 1;
+			break;
+		}
+	}
+	fclose(fp);
+	return ret;
+}
+
+/* All the string should be freed manually!! */
+int file_to_vector(const char* filename, struct vector *v) {
+	char *line = NULL;
+	size_t len = 0;
+	ssize_t read;
+
+	FILE *fp = xfopen(filename, "r");
+	if (fp == NULL)
+		return 1;
+
+	while ((read = getline(&line, &len, fp)) != -1) {
+		// Remove end newline
+		if (line[read - 1] == '\n')
+			line[read - 1] = '\0';
+		vec_push_back(v, line);
+		line = NULL;
+	}
+	fclose(fp);
+	return 0;
+}
+
+int vector_to_file(const char *filename, struct vector *v) {
+	FILE *fp = xfopen(filename, "w");
+	if (fp == NULL)
+		return 1;
+	char *line;
+	vec_for_each(v, line) {
+		fprintf(fp, "%s\n", line);
+	}
+	fclose(fp);
+	return 0;
+}
+
+/* Check if the string only contains digits */
+static int is_num(const char *s) {
+	int len = strlen(s);
+	for (int i = 0; i < len; ++i)
+		if (s[i] < '0' || s[i] > '9')
+			return 0;
+	return 1;
+}
+
+/* Read a whole line from file descriptor */
+ssize_t fdgets(char *buf, const size_t size, int fd) {
+	ssize_t len = 0;
+	buf[0] = '\0';
+	while (read(fd, buf + len, 1) >= 0 && len < size - 1) {
+		if (buf[len] == '\0' || buf[len++] == '\n') {
+			buf[len] = '\0';
+			break;
+		}
+	}
+	buf[size - 1] = '\0';
+	return len;
+}
+
+/* Call func for each process */
+void ps(void (*func)(int)) {
+	DIR *dir;
+	struct dirent *entry;
+
+	if (!(dir = xopendir("/proc")))
+		return;
+
+	while ((entry = xreaddir(dir))) {
+		if (entry->d_type == DT_DIR) {
+			if (is_num(entry->d_name))
+				func(atoi(entry->d_name));
+		}
+	}
+
+	closedir(dir);
+}
+
+// Internal usage
+static void (*ps_filter_cb)(int);
+static const char *ps_filter_pattern;
+static void proc_name_filter(int pid) {
+	char buf[64];
+	int fd;
+	snprintf(buf, sizeof(buf), "/proc/%d/cmdline", pid);
+	if ((fd = open(buf, O_RDONLY)) == -1)
+		return;
+	if (fdgets(buf, sizeof(buf), fd) == 0) {
+		snprintf(buf, sizeof(buf), "/proc/%d/comm", pid);
+		close(fd);
+		if ((fd = open(buf, O_RDONLY)) == -1)
+			return;
+		fdgets(buf, sizeof(buf), fd);
+	}
+	if (strcmp(buf, ps_filter_pattern) == 0) {
+		ps_filter_cb(pid);
+	}
+	close(fd);
+}
+
+/* Call func with process name filtered with pattern */
+void ps_filter_proc_name(const char *pattern, void (*func)(int)) {
+	ps_filter_cb = func;
+	ps_filter_pattern = ((pattern == NULL) ? "" : pattern);
+	ps(proc_name_filter);
+}
+
+#define DEV_BLOCK "/dev/block"
+
+void unlock_blocks() {
+	char path[PATH_MAX];
+	DIR *dir;
+	struct dirent *entry;
+	int fd, OFF = 0;
+
+	if (!(dir = xopendir(DEV_BLOCK)))
+		return;
+
+	while((entry = readdir(dir))) {
+		if (entry->d_type == DT_BLK &&
+			strstr(entry->d_name, "ram") == NULL &&
+			strstr(entry->d_name, "loop") == NULL) {
+			snprintf(path, sizeof(path), "%s/%s", DEV_BLOCK, entry->d_name);
+			if ((fd = xopen(path, O_RDONLY)) < 0)
+				continue;
+
+			if (ioctl(fd, BLKROSET, &OFF) == -1)
+				PLOGE("unlock %s", path);
+			close(fd);
+		}
+	}
+
+	closedir(dir);
+}
+
+void setup_sighandlers(void (*handler)(int)) {
+	struct sigaction act;
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = handler;
+	for (int i = 0; quit_signals[i]; ++i) {
+		sigaction(quit_signals[i], &act, NULL);
+	}
+}
+
+/*
+   fd == NULL -> Ignore output
+  *fd < 0     -> Open pipe and set *fd to the read end
+  *fd >= 0    -> STDOUT (or STDERR) will be redirected to *fd
+  *cb         -> A callback function which runs after fork
+*/
+static int v_exec_command(int err, int *fd, void (*setupenv)(struct vector*), const char *argv0, va_list argv) {
+	int pipefd[2], writeEnd = -1;
+
+	if (fd) {
+		if (*fd < 0) {
+			if (xpipe2(pipefd, O_CLOEXEC) == -1)
+				return -1;
+			writeEnd = pipefd[1];
+		} else {
+			writeEnd = *fd;
+		}
+	}
+
+	// Collect va_list into vector
+	struct vector args;
+	vec_init(&args);
+	vec_push_back(&args, strdup(argv0));
+	for (void *arg = va_arg(argv, void*); arg; arg = va_arg(argv, void*))
+		vec_push_back(&args, strdup(arg));
+	vec_push_back(&args, NULL);
+
+	// Setup environment
+	char *const *envp;
+	struct vector env;
+	vec_init(&env);
+	if (setupenv) {
+		setupenv(&env);
+		envp = (char **) vec_entry(&env);
+	} else {
+		extern char **environ;
+		envp = environ;
+	}
+
+	int pid = fork();
+	if (pid != 0) {
+		if (fd && *fd < 0) {
+			// Give the read end and close write end
+			*fd = pipefd[0];
+			close(pipefd[1]);
+		}
+		vec_deep_destroy(&args);
+		vec_deep_destroy(&env);
+		return pid;
+	}
+
+	// Don't return to the daemon if anything goes wrong
+	err_handler = exit_proc;
+
+	if (fd) {
+		xdup2(writeEnd, STDOUT_FILENO);
+		if (err) xdup2(writeEnd, STDERR_FILENO);
+	}
+
+	execvpe(argv0, (char **) vec_entry(&args), envp);
+	PLOGE("execvpe");
+	return -1;
+}
+
+int exec_command_sync(char *const argv0, ...) {
+	va_list argv;
+	va_start(argv, argv0);
+	int pid, status;
+	pid = v_exec_command(0, NULL, NULL, argv0, argv);
+	va_end(argv);
+	if (pid < 0)
+		return pid;
+	waitpid(pid, &status, 0);
+	return WEXITSTATUS(status);
+}
+
+int exec_command(int err, int *fd, void (*setupenv)(struct vector*), const char *argv0, ...) {
+	va_list argv;
+	va_start(argv, argv0);
+	int pid = v_exec_command(err, fd, setupenv, argv0, argv);
+	va_end(argv);
+	return pid;
+}
+
+int mkdir_p(const char *pathname, mode_t mode) {
+	char *path = strdup(pathname), *p;
+	errno = 0;
+	for (p = path + 1; *p; ++p) {
+		if (*p == '/') {
+			*p = '\0';
+			if (mkdir(path, mode) == -1) {
+				if (errno != EEXIST)
+					return -1;
+			}
+			*p = '/';
+		}
+	}
+	if (mkdir(path, mode) == -1) {
+		if (errno != EEXIST)
+			return -1;
+	}
+	free(path);
+	return 0;
+}
+
+int bind_mount(const char *from, const char *to) {
+	int ret = xmount(from, to, NULL, MS_BIND, NULL);
+#ifdef MAGISK_DEBUG
+	LOGI("bind_mount: %s -> %s\n", from, to);
+#else
+	LOGI("bind_mount: %s\n", to);
+#endif
+	return ret;
+}
+
+int open_new(const char *filename) {
+	return xopen(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+}
+
+int cp_afc(const char *source, const char *target) {
+	struct stat buf;
+	xlstat(source, &buf);
+
+	if (S_ISDIR(buf.st_mode)) {
+		DIR *dir;
+		struct dirent *entry;
+		char *s_path, *t_path;
+
+		if (!(dir = xopendir(source)))
+			return 1;
+
+		s_path = xmalloc(PATH_MAX);
+		t_path = xmalloc(PATH_MAX);
+
+		mkdir_p(target, 0755);
+		clone_attr(source, target);
+
+		while ((entry = xreaddir(dir))) {
+			if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+				continue;
+			snprintf(s_path, PATH_MAX, "%s/%s", source, entry->d_name);
+			snprintf(t_path, PATH_MAX, "%s/%s", target, entry->d_name);
+			cp_afc(s_path, t_path);
+		}
+		free(s_path);
+		free(t_path);
+
+		closedir(dir);
+	} else{
+		unlink(target);
+		if (S_ISREG(buf.st_mode)) {
+			int sfd, tfd;
+			sfd = xopen(source, O_RDONLY);
+			tfd = xopen(target, O_WRONLY | O_CREAT | O_TRUNC);
+			xsendfile(tfd, sfd, NULL, buf.st_size);
+			fclone_attr(sfd, tfd);
+			close(sfd);
+			close(tfd);
+		} else if (S_ISLNK(buf.st_mode)) {
+			char buffer[PATH_MAX];
+			xreadlink(source, buffer, sizeof(buffer));
+			xsymlink(buffer, target);
+			clone_attr(source, target);
+		} else {
+			return 1;
+		}
+	}
+	return 0;
+}
+
+void clone_attr(const char *source, const char *target) {
+	struct stat buf;
+	lstat(target, &buf);
+	chmod(target, buf.st_mode & 0777);
+	chown(target, buf.st_uid, buf.st_gid);
+	char *con;
+	lgetfilecon(source, &con);
+	lsetfilecon(target, con);
+	free(con);
+}
+
+void fclone_attr(const int sourcefd, const int targetfd) {
+	struct stat buf;
+	fstat(sourcefd, &buf);
+	fchmod(targetfd, buf.st_mode & 0777);
+	fchown(targetfd, buf.st_uid, buf.st_gid);
+	char *con;
+	fgetfilecon(sourcefd, &con);
+	fsetfilecon(targetfd, con);
+	free(con);
+}
+
+void get_client_cred(int fd, struct ucred *cred) {
+	socklen_t ucred_length = sizeof(*cred);
+	if(getsockopt(fd, SOL_SOCKET, SO_PEERCRED, cred, &ucred_length))
+		PLOGE("getsockopt");
+}
+
+int switch_mnt_ns(int pid) {
+	char mnt[32];
+	snprintf(mnt, sizeof(mnt), "/proc/%d/ns/mnt", pid);
+	if(access(mnt, R_OK) == -1) return 1; // Maybe process died..
+
+	int fd, ret;
+	fd = xopen(mnt, O_RDONLY);
+	if (fd < 0) return 1;
+	// Switch to its namespace
+	ret = setns(fd, 0);
+	close(fd);
+	return ret;
+}

jni/utils/vector.c

@@ -0,0 +1,67 @@
+/* vector.c - A simple vector implementation in c
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "vector.h"
+
+void vec_init(struct vector *v) {
+	if (v == NULL) return;
+	vec_size(v) = 0;
+	vec_cap(v) = 1;
+	vec_entry(v) = malloc(sizeof(void*));
+}
+
+void vec_push_back(struct vector *v, void *p) {
+	if (v == NULL) return;
+	if (vec_size(v) == vec_cap(v)) {
+		vec_cap(v) *= 2;
+		vec_entry(v) = realloc(vec_entry(v), sizeof(void*) * vec_cap(v));
+	}
+	vec_entry(v)[vec_size(v)] = p;
+	++vec_size(v);
+}
+
+void *vec_pop_back(struct vector *v) {
+	void *ret = vec_entry(v)[vec_size(v) - 1];
+	--vec_size(v);
+	return ret;
+}
+
+void vec_sort(struct vector *v, int (*compar)(const void *, const void *)) {
+	if (v == NULL) return;
+	qsort(vec_entry(v), vec_size(v), sizeof(void*), compar);
+}
+
+/* Will cleanup only the vector itself
+ * use in cases when each element requires special cleanup 
+ */
+void vec_destroy(struct vector *v) {
+	if (v == NULL) return;
+	vec_size(v) = 0;
+	vec_cap(v) = 0;
+	free(vec_entry(v));
+	vec_entry(v) = NULL; // Prevent double destroy segfault
+}
+
+/* Will cleanup each element AND the vector itself
+ * Shall be the general case
+ */
+void vec_deep_destroy(struct vector *v) {
+	if (v == NULL) return;
+	void *e;
+	vec_for_each(v, e) {
+		free(e);
+	}
+	vec_destroy(v);
+}
+
+struct vector *vec_dup(struct vector *v) {
+	struct vector *ret = malloc(sizeof(*ret));
+	vec_size(ret) = vec_size(v);
+	vec_cap(ret) = vec_cap(v);
+	vec_entry(v) = malloc(sizeof(void*) * vec_cap(ret));
+	memcpy(vec_entry(ret), vec_entry(v), sizeof(void*) * vec_cap(ret));
+	return ret;
+}

jni/utils/xwrap.c

@@ -0,0 +1,339 @@
+/* xwrap.c - wrappers around existing library functions.
+ *
+ * Functions with the x prefix are wrappers that either succeed or kill the
+ * program with an error message, but never return failure. They usually have
+ * the same arguments and return value as the function they wrap.
+ *
+ */
+
+#define _GNU_SOURCE
+#include <sched.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+#include <sys/mman.h>
+#include <sys/sendfile.h>
+
+#include "logging.h"
+#include "utils.h"
+
+FILE *xfopen(const char *pathname, const char *mode) {
+	FILE *fp = fopen(pathname, mode);
+	if (fp == NULL) {
+		PLOGE("fopen: %s", pathname);
+	}
+	return fp;
+}
+
+FILE *xfdopen(int fd, const char *mode) {
+	FILE *fp = fdopen(fd, mode);
+	if (fp == NULL) {
+		PLOGE("fopen");
+	}
+	return fp;
+}
+
+int xopen2(const char *pathname, int flags) {
+	int fd = open(pathname, flags);
+	if (fd < 0) {
+		PLOGE("open: %s", pathname);
+	}
+	return fd;
+}
+
+int xopen3(const char *pathname, int flags, mode_t mode) {
+	int fd = open(pathname, flags, mode);
+	if (fd < 0) {
+		PLOGE("open: %s", pathname);
+	}
+	return fd;
+}
+
+ssize_t xwrite(int fd, const void *buf, size_t count) {
+	int ret = write(fd, buf, count);
+	if (count != ret) {
+		PLOGE("write");
+	}
+	return ret;
+}
+
+// Read error other than EOF
+ssize_t xread(int fd, void *buf, size_t count) {
+	int ret = read(fd, buf, count);
+	if (ret < 0) {
+		PLOGE("read");
+	}
+	return ret;
+}
+
+// Read exact same size as count
+ssize_t xxread(int fd, void *buf, size_t count) {
+	int ret = read(fd, buf, count);
+	if (count != ret) {
+		PLOGE("read");
+	}
+	return ret;
+}
+
+int xpipe2(int pipefd[2], int flags) {
+	int ret = pipe2(pipefd, flags);
+	if (ret == -1) {
+		PLOGE("pipe2");
+	}
+	return ret;
+}
+
+int xsetns(int fd, int nstype) {
+	int ret = setns(fd, nstype);
+	if (ret == -1) {
+		PLOGE("setns");
+	}
+	return ret;
+}
+
+DIR *xopendir(const char *name) {
+	DIR *d = opendir(name);
+	if (d == NULL) {
+		PLOGE("opendir: %s", name);
+	}
+	return d;
+}
+
+struct dirent *xreaddir(DIR *dirp) {
+	errno = 0;
+	struct dirent *e = readdir(dirp);
+	if (errno && e == NULL) {
+		PLOGE("readdir");
+	}
+	return e;
+}
+
+pid_t xsetsid() {
+	pid_t pid = setsid();
+	if (pid == -1) {
+		PLOGE("setsid");
+	}
+	return pid;
+}
+
+int xsocket(int domain, int type, int protocol) {
+	int fd = socket(domain, type, protocol);
+	if (fd == -1) {
+		PLOGE("socket");
+	}
+	return fd;
+}
+
+int xbind(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
+	int ret = bind(sockfd, addr, addrlen);
+	if (ret == -1) {
+		PLOGE("bind");
+	}
+	return ret;
+}
+
+int xconnect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
+	int ret = connect(sockfd, addr, addrlen);
+	if (ret == -1) {
+		PLOGE("bind");
+	}
+	return ret;
+}
+
+int xlisten(int sockfd, int backlog) {
+	int ret = listen(sockfd, backlog);
+	if (ret == -1) {
+		PLOGE("listen");
+	}
+	return ret;
+}
+
+int xaccept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags) {
+	int fd = accept4(sockfd, addr, addrlen, flags);
+	if (fd == -1) {
+		PLOGE("accept");
+	}
+	return fd;
+}
+
+void *xmalloc(size_t size) {
+	void *p = malloc(size);
+	if (p == NULL) {
+		PLOGE("malloc");
+	}
+	return p;
+}
+
+void *xcalloc(size_t nmemb, size_t size) {
+	void *p = calloc(nmemb, size);
+	if (p == NULL) {
+		PLOGE("calloc");
+	}
+	return p;
+}
+
+void *xrealloc(void *ptr, size_t size) {
+	void *p = realloc(ptr, size);
+	if (p == NULL) {
+		PLOGE("realloc");
+	}
+	return p;
+}
+
+ssize_t xsendmsg(int sockfd, const struct msghdr *msg, int flags) {
+	int sent = sendmsg(sockfd, msg, flags);
+	if (sent == -1) {
+		PLOGE("sendmsg");
+	}
+	return sent;
+}
+
+ssize_t xrecvmsg(int sockfd, struct msghdr *msg, int flags) {
+	int rec = recvmsg(sockfd, msg, flags);
+	if (rec == -1) {
+		PLOGE("recvmsg");
+	}
+	return rec;
+}
+
+int xpthread_create(pthread_t *thread, const pthread_attr_t *attr,
+                          void *(*start_routine) (void *), void *arg) {
+	errno = pthread_create(thread, attr, start_routine, arg);
+	if (errno) {
+		PLOGE("pthread_create");
+	}
+	return errno;
+}
+
+int xsocketpair(int domain, int type, int protocol, int sv[2]) {
+	int ret = socketpair(domain, type, protocol, sv);
+	if (ret == -1) {
+		PLOGE("socketpair");
+	}
+	return ret;
+}
+
+int xstat(const char *pathname, struct stat *buf) {
+	int ret = stat(pathname, buf);
+	if (ret == -1) {
+		PLOGE("stat %s", pathname);
+	}
+	return ret;
+}
+
+int xlstat(const char *pathname, struct stat *buf) {
+	int ret = lstat(pathname, buf);
+	if (ret == -1) {
+		PLOGE("lstat %s", pathname);
+	}
+	return ret;
+}
+
+int xdup2(int oldfd, int newfd) {
+	int ret = dup2(oldfd, newfd);
+	if (ret == -1) {
+		PLOGE("dup2");
+	}
+	return ret;
+}
+
+ssize_t xreadlink(const char *pathname, char *buf, size_t bufsiz) {
+	ssize_t ret = readlink(pathname, buf, bufsiz);
+	if (ret == -1) {
+		PLOGE("readlink %s", pathname);
+	} else {
+		buf[ret] = '\0';
+		++ret;
+	}
+	return ret;
+}
+
+int xsymlink(const char *target, const char *linkpath) {
+	int ret = symlink(target, linkpath);
+	if (ret == -1) {
+		PLOGE("symlink %s->%s", target, linkpath);
+	}
+	return ret;
+}
+
+int xmount(const char *source, const char *target,
+	const char *filesystemtype, unsigned long mountflags,
+	const void *data) {
+	int ret = mount(source, target, filesystemtype, mountflags, data);
+	if (ret == -1) {
+		PLOGE("mount %s->%s", source, target);
+	}
+	return ret;
+}
+
+int xumount(const char *target) {
+	int ret = umount(target);
+	if (ret == -1) {
+		PLOGE("umount %s", target);
+	}
+	return ret;
+}
+
+int xumount2(const char *target, int flags) {
+	int ret = umount2(target, flags);
+	if (ret == -1) {
+		PLOGE("umount2 %s", target);
+	}
+	return ret;
+}
+
+int xchmod(const char *pathname, mode_t mode) {
+	int ret = chmod(pathname, mode);
+	if (ret == -1) {
+		PLOGE("chmod %s %u", pathname, mode);
+	}
+	return ret;
+}
+
+int xrename(const char *oldpath, const char *newpath) {
+	int ret = rename(oldpath, newpath);
+	if (ret == -1) {
+		PLOGE("rename %s->%s", oldpath, newpath);
+	}
+	return ret;
+}
+
+int xmkdir(const char *pathname, mode_t mode) {
+	int ret = mkdir(pathname, mode);
+	if (ret == -1 && errno != EEXIST) {
+		PLOGE("mkdir %s %u", pathname, mode);
+	}
+	return ret;
+}
+
+void *xmmap(void *addr, size_t length, int prot, int flags,
+	int fd, off_t offset) {
+	void *ret = mmap(addr, length, prot, flags, fd, offset);
+	if (ret == MAP_FAILED) {
+		PLOGE("mmap");
+	}
+	return ret;
+}
+
+ssize_t xsendfile(int out_fd, int in_fd, off_t *offset, size_t count) {
+	ssize_t ret = sendfile(out_fd, in_fd, offset, count);
+	if (count != ret) {
+		PLOGE("sendfile");
+	}
+	return ret;
+}
+
+int xmkdir_p(const char *pathname, mode_t mode) {
+	int ret = mkdir_p(pathname, mode);
+	if (ret == -1) {
+		PLOGE("mkdir_p %s", pathname);
+	}
+	return ret;
+}

scripts/addon.d.sh

@@ -0,0 +1,91 @@
+#!/sbin/sh
+##########################################################################################
+#
+# Magisk Survival Script for ROMs with addon.d support
+# by topjohnwu
+#
+# Inspired by 99-flashafterupdate.sh of osm0sis @ xda-developers
+#
+##########################################################################################
+
+. /tmp/backuptool.functions
+
+main() {
+  # Magisk binaries
+  MAGISKBIN=/data/magisk
+  # This script always runs in recovery
+  BOOTMODE=false
+
+  mount /data 2>/dev/null
+
+  if [ ! -d $MAGISKBIN ]; then
+    echo "! Cannot find Magisk binaries!"
+    exit 1
+  fi
+
+  # Wait for post addon.d processes to finish
+  sleep 5
+
+  # Load utility functions
+  . $MAGISKBIN/util_functions.sh
+
+  ui_print "************************"
+  ui_print "* Magisk v$MAGISK_VER addon.d"
+  ui_print "************************"
+
+  mount_partitions
+
+  api_level_arch_detect
+
+  recovery_actions
+
+  remove_system_su
+
+  find_boot_image
+  [ -z $BOOTIMAGE ] && abort "! Unable to detect boot image"
+  ui_print "- Found Boot Image: $BOOTIMAGE"
+
+  SOURCEDMODE=true
+  cd $MAGISKBIN
+
+  # Source the boot patcher
+  . $MAGISKBIN/boot_patch.sh "$BOOTIMAGE"
+
+  if [ -f stock_boot* ]; then
+    rm -f /data/stock_boot* 2>/dev/null
+    mv stock_boot* /data
+  fi
+
+  flash_boot_image new-boot.img $BOOTIMAGE
+  rm -f new-boot.img
+
+  cd /
+  recovery_cleanup
+
+  ui_print "- Done"
+  exit 0
+}
+
+case "$1" in
+  backup)
+    # Stub
+  ;;
+  restore)
+    # Stub
+  ;;
+  pre-backup)
+    # Stub
+  ;;
+  post-backup)
+    # Stub
+  ;;
+  pre-restore)
+    # Stub
+  ;;
+  post-restore)
+    # Get the FD for ui_print
+    OUTFD=`ps | grep -v grep | grep -oE "update(.*)" | cut -d" " -f3`
+    # Run the main function in a parallel subshell
+    (main) &
+  ;;
+esac

scripts/boot_patch.sh

@@ -0,0 +1,233 @@
+#!/system/bin/sh
+##########################################################################################
+#
+# Magisk Boot Image Patcher
+# by topjohnwu
+#
+# This script should be placed in a directory with the following files:
+#
+# File name       type      Description
+#
+# boot_patch.sh   script    A script to patch boot. Expect path to boot image as parameter.
+#               (this file) The script will use binaries and files in its same directory
+#                           to complete the patching process
+# magisk          binary    The main binary for all Magisk operations.
+#                           It is also used to patch the sepolicy in the ramdisk.
+# magiskboot      binary    A tool to unpack boot image, decompress ramdisk, extract ramdisk
+#                           , and patch the ramdisk for Magisk support
+# init.magisk.rc  script    A new line will be added to init.rc to import this script.
+#                           All magisk entrypoints are defined here
+# chromeos        folder    This folder should store all the utilities and keys to sign
+#               (optional)  a chromeos device, used in the tablet Pixel C
+#
+# If the script is not running as root, then the input boot image should be a stock image
+# or have a backup included in ramdisk internally, since we cannot access the stock boot
+# image placed under /data we've created when previously installing
+#
+##########################################################################################
+##########################################################################################
+# Functions
+##########################################################################################
+
+# Pure bash dirname implementation
+dirname_wrap() {
+  case "$1" in
+    */*)
+      dir=${1%/*}
+      [ -z $dir ] && echo "/" || echo $dir
+      ;;
+    *)
+      echo "."
+      ;;
+  esac
+}
+
+# Pure bash basename implementation
+basename_wrap() {
+  echo ${1##*/}
+}
+
+# --cpio-add <incpio> <mode> <entry> <infile>
+cpio_add() {
+  ./magiskboot --cpio-add ramdisk.cpio $1 $2 $3
+}
+
+# --cpio-extract <incpio> <entry> <outfile>
+cpio_extract() {
+  ./magiskboot --cpio-extract ramdisk.cpio $1 $2
+}
+
+# --cpio-mkdir <incpio> <mode> <entry>
+cpio_mkdir() {
+  ./magiskboot --cpio-mkdir ramdisk.cpio $1 $2
+}
+
+##########################################################################################
+# Initialization
+##########################################################################################
+
+BOOTIMAGE="$1"
+
+[ -e "$BOOTIMAGE" ] || (echo "$BOOTIMAGE does not exist!" && exit 1)
+
+# Presets
+[ -z $KEEPVERITY ] && KEEPVERITY=false
+[ -z $KEEPFORCEENCRYPT ] && KEEPFORCEENCRYPT=false
+
+# Detect whether running as root
+id | grep "uid=0" >/dev/null 2>&1 && ROOT=true || ROOT=false
+
+if [ -z $SOURCEDMODE ]; then
+  # Switch to the location of the script file
+  cd "`dirname_wrap "${BASH_SOURCE:-$0}"`"
+  # Load utility functions
+  . ./util_functions.sh
+  # Detect current status
+  mount_partitions
+fi
+
+chmod -R 755 .
+
+##########################################################################################
+# Unpack
+##########################################################################################
+
+migrate_boot_backup
+
+CHROMEOS=false
+
+ui_print "- Unpacking boot image"
+./magiskboot --unpack "$BOOTIMAGE"
+
+case $? in
+  1 )
+    abort "! Unable to unpack boot image"
+    ;;
+  2 )
+    CHROMEOS=true
+    ;;
+  3 )
+    ui_print "! Sony ELF32 format detected"
+    abort "! Please use BootBridge from @AdrianDC to flash Magisk"
+    ;;
+  4 )
+    ui_print "! Sony ELF64 format detected"
+    abort "! Stock kernel cannot be patched, please use a custom kernel"
+esac
+
+##########################################################################################
+# Ramdisk restores
+##########################################################################################
+
+# Test patch status and do restore, after this section, ramdisk.cpio.orig is guaranteed to exist
+ui_print "- Checking ramdisk status"
+./magiskboot --cpio-test ramdisk.cpio
+case $? in
+  0 )  # Stock boot
+    ui_print "- Stock boot image detected!"
+    ui_print "- Backing up stock boot image"
+    SHA1=`./magiskboot --sha1 "$BOOTIMAGE" 2>/dev/null`
+    STOCKDUMP=stock_boot_${SHA1}.img
+    dd if="$BOOTIMAGE" of=$STOCKDUMP
+    ./magiskboot --compress $STOCKDUMP
+    cp -af ramdisk.cpio ramdisk.cpio.orig
+    ;;
+  1 )  # Magisk patched
+    ui_print "- Magisk patched image detected!"
+    # Find SHA1 of stock boot image
+    [ -z $SHA1 ] && SHA1=`./magiskboot --cpio-stocksha1 ramdisk.cpio 2>/dev/null`
+    OK=false
+    ./magiskboot --cpio-restore ramdisk.cpio
+    if [ $? -eq 0 ]; then
+      ui_print "- Ramdisk restored from internal backup"
+      OK=true
+    else
+      # Restore failed
+      ui_print "! Cannot restore from internal backup"
+      # If we are root and SHA1 known, we try to find the stock backup
+      if $ROOT && [ ! -z $SHA1 ]; then
+        STOCKDUMP=/data/stock_boot_${SHA1}.img
+        if [ -f ${STOCKDUMP}.gz ]; then
+          ui_print "- Stock boot image backup found"
+          ./magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img
+          ./magiskboot --unpack stock_boot.img
+          rm -f stock_boot.img
+          OK=true
+        fi
+      fi
+    fi
+    if ! $OK; then
+      ui_print "! Ramdisk restoration incomplete"
+      ui_print "! Will still try to continue installation"
+    fi
+    cp -af ramdisk.cpio ramdisk.cpio.orig
+    ;;
+  2 ) # Other patched
+    ui_print "! Boot image patched by other programs!"
+    abort "! Please restore stock boot image"
+    ;;
+esac
+
+##########################################################################################
+# Ramdisk patches
+##########################################################################################
+
+ui_print "- Patching ramdisk"
+
+if [ ! -z $SHA1 ]; then
+  cp init.magisk.rc init.magisk.rc.bak
+  echo "# STOCKSHA1=$SHA1" >> init.magisk.rc
+fi
+
+if $SKIP_INITRAMFS; then
+  cpio_add 750 init magiskinit
+  cpio_mkdir 000 overlay
+  cpio_add 750 overlay/init.magisk.rc init.magisk.rc
+  cpio_mkdir 750 overlay/sbin
+  cpio_add 755 overlay/sbin/magisk magisk
+else
+  ./magiskboot --cpio-patch ramdisk.cpio $KEEPVERITY $KEEPFORCEENCRYPT
+
+  cpio_extract sepolicy sepolicy
+  ./magisk magiskpolicy --load sepolicy --save sepolicy --minimal
+  cpio_add 644 sepolicy sepolicy
+  rm -f sepolicy
+
+  cpio_add 750 init.magisk.rc init.magisk.rc
+  cpio_add 755 sbin/magisk magisk
+fi
+
+mv init.magisk.rc.bak init.magisk.rc 2>/dev/null
+
+# Create ramdisk backups
+./magiskboot --cpio-backup ramdisk.cpio ramdisk.cpio.orig
+
+if ! $KEEPVERITY && [ -f dtb ]; then
+  ./magiskboot --dtb-patch dtb && ui_print "- Patching fstab in dtb to remove dm-verity"
+fi
+
+rm -f ramdisk.cpio.orig
+
+##########################################################################################
+# Repack and flash
+##########################################################################################
+
+# Hexpatches
+
+# Remove Samsung RKP in stock kernel
+./magiskboot --hexpatch kernel \
+49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \
+A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054
+
+# skip_initramfs -> want_initramfs
+$SKIP_INITRAMFS && ./magiskboot --hexpatch kernel \
+736B69705F696E697472616D6673 \
+77616E745F696E697472616D6673
+
+ui_print "- Repacking boot image"
+./magiskboot --repack "$BOOTIMAGE" || abort "! Unable to repack boot image!"
+
+# Sign chromeos boot
+$CHROMEOS && sign_chromeos
+
+./magiskboot --cleanup

scripts/flash_script.sh

@@ -1,261 +1,74 @@
-#!/sbin/sh
+#MAGISK
 ##########################################################################################
 #
-# Magisk Boot Image Patcher
+# Magisk Flash Script
 # by topjohnwu
-# 
-# This zip will patch your boot image with Magisk support
+#
+# This script will detect, construct the environment for Magisk
+# It will then call boot_patch.sh to patch the boot image
 #
 ##########################################################################################
 
-if [ -z "$BOOTMODE" ]; then
-  BOOTMODE=false
-fi
+##########################################################################################
+# Preparation
+##########################################################################################
 
-TMPDIR=/tmp
-($BOOTMODE) && TMPDIR=/dev/tmp
+# Detect whether in boot mode
+ps | grep zygote | grep -v grep >/dev/null && BOOTMODE=true || BOOTMODE=false
+$BOOTMODE || ps -A 2>/dev/null | grep zygote | grep -v grep >/dev/null && BOOTMODE=true
 
-INSTALLER=$TMPDIR/magisk
+# This path should work in any cases
+TMPDIR=/dev/tmp
 
+INSTALLER=$TMPDIR/install
+COMMONDIR=$INSTALLER/common
+CHROMEDIR=$INSTALLER/chromeos
 COREDIR=/magisk/.core
 
 # Default permissions
 umask 022
 
-##########################################################################################
-# Flashable update-binary preparation
-##########################################################################################
-
 OUTFD=$2
 ZIP=$3
 
-readlink /proc/$$/fd/$OUTFD 2>/dev/null | grep /tmp >/dev/null
-if [ "$?" -eq "0" ]; then
-  OUTFD=0
-
-  for FD in `ls /proc/$$/fd`; do
-    readlink /proc/$$/fd/$FD 2>/dev/null | grep pipe >/dev/null
-    if [ "$?" -eq "0" ]; then
-      ps | grep " 3 $FD " | grep -v grep >/dev/null
-      if [ "$?" -eq "0" ]; then
-        OUTFD=$FD
-        break
-      fi
-    fi
-  done
+if [ ! -f $COMMONDIR/util_functions.sh ]; then
+  echo "! Unable to extract zip file!"
+  exit 1
 fi
 
-mkdir -p $INSTALLER
-cd $INSTALLER
-unzip -o "$ZIP"
+# Load utility fuctions
+. $COMMONDIR/util_functions.sh
 
-##########################################################################################
-# Functions
-##########################################################################################
-
-ui_print() {
-  if ($BOOTMODE); then
-    echo "$1"
-  else 
-    echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
-    echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
-  fi
-}
-
-getvar() {
-  local VARNAME=$1
-  local VALUE=$(eval echo \$"$VARNAME");
-  for FILE in /dev/.magisk /data/.magisk /cache/.magisk /system/.magisk; do
-    if [ -z "$VALUE" ]; then
-      LINE=$(cat $FILE 2>/dev/null | grep "$VARNAME=")
-      if [ ! -z "$LINE" ]; then
-        VALUE=${LINE#*=}
-      fi
-    fi
-  done
-  eval $VARNAME=\$VALUE
-}
-
-find_boot_image() {
-  if [ -z "$BOOTIMAGE" ]; then
-    for PARTITION in kern-a KERN-A android_boot ANDROID_BOOT kernel KERNEL boot BOOT lnx LNX; do
-      BOOTIMAGE=`readlink /dev/block/by-name/$PARTITION || readlink /dev/block/platform/*/by-name/$PARTITION || readlink /dev/block/platform/*/*/by-name/$PARTITION`
-      if [ ! -z "$BOOTIMAGE" ]; then break; fi
-    done
-  fi
-  if [ -z "$BOOTIMAGE" ]; then
-    FSTAB="/etc/recovery.fstab"
-    [ ! -f "$FSTAB" ] && FSTAB="/etc/recovery.fstab.bak"
-    [ -f "$FSTAB" ] BOOTIMAGE=`grep -E '\b/boot\b' "$FSTAB" | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
-  fi
-}
-
-is_mounted() {
-  if [ ! -z "$2" ]; then
-    cat /proc/mounts | grep $1 | grep $2, >/dev/null
-  else
-    cat /proc/mounts | grep $1 >/dev/null
-  fi
-  return $?
-}
-
-mount_image() {
-  if [ ! -d "$2" ]; then
-    mount -o rw,remount rootfs /
-    mkdir -p $2 2>/dev/null
-    ($BOOTMODE) && mount -o ro,remount rootfs /
-    [ ! -d "$2" ] && return 1
-  fi
-  if (! is_mounted $2); then
-    LOOPDEVICE=
-    for LOOP in 0 1 2 3 4 5 6 7; do
-      if (! is_mounted $2); then
-        LOOPDEVICE=/dev/block/loop$LOOP
-        if [ ! -f "$LOOPDEVICE" ]; then
-          mknod $LOOPDEVICE b 7 $LOOP
-        fi
-        losetup $LOOPDEVICE $1
-        if [ "$?" -eq "0" ]; then
-          mount -t ext4 -o loop $LOOPDEVICE $2
-          if (! is_mounted $2); then
-            /system/bin/toolbox mount -t ext4 -o loop $LOOPDEVICE $2
-          fi
-          if (! is_mounted $2); then
-            /system/bin/toybox mount -t ext4 -o loop $LOOPDEVICE $2
-          fi
-        fi
-        if (is_mounted $2); then
-          ui_print "- Mounting $1 to $2"
-          break;
-        fi
-      fi
-    done
-  fi
-}
-
-grep_prop() {
-  REGEX="s/^$1=//p"
-  shift
-  FILES=$@
-  if [ -z "$FILES" ]; then
-    FILES='/system/build.prop'
-  fi
-  cat $FILES 2>/dev/null | sed -n $REGEX | head -n 1
-}
-
-unpack_boot() {
-  rm -rf $UNPACKDIR $RAMDISK 2>/dev/null
-  mkdir -p $UNPACKDIR
-  mkdir -p $RAMDISK
-  cd $UNPACKDIR
-  $BINDIR/bootimgtools --extract $1
-
-  cd $RAMDISK
-  gunzip -c < $UNPACKDIR/ramdisk.gz | cpio -i
-}
-
-repack_boot() {
-  cd $RAMDISK
-  find . | cpio -o -H newc 2>/dev/null | gzip -9 > $UNPACKDIR/ramdisk.gz
-  cd $UNPACKDIR
-  $BINDIR/bootimgtools --repack $ORIGBOOT
-  if [ -f chromeos ]; then
-    echo " " > config
-    echo " " > bootloader
-    $CHROMEDIR/futility vbutil_kernel --pack new-boot.img.signed --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk --version 1 --vmlinuz new-boot.img --config config --arch arm --bootloader bootloader --flags 0x1
-    rm -f new-boot.img
-    mv new-boot.img.signed new-boot.img
-  fi
-  if ($SAMSUNG); then
-    SAMSUNG_CHECK=$(cat new-boot.img | grep SEANDROIDENFORCE)
-    if [ $? -ne 0 ]; then
-      echo -n "SEANDROIDENFORCE" >> new-boot.img
-    fi
-  fi
-  mv new-boot.img $NEWBOOT
-  $BINDIR/bootimgtools --hexpatch $NEWBOOT \
-  49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \
-  A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054
-}
+get_outfd
 
 ##########################################################################################
 # Detection
 ##########################################################################################
 
-ui_print "*****************************"
-ui_print "MAGISK_VERSION_STUB"
-ui_print "*****************************"
+ui_print "************************"
+ui_print "* Magisk v$MAGISK_VER Installer"
+ui_print "************************"
 
-if [ ! -d "$INSTALLER/common" ]; then
-  ui_print "! Failed: Unable to extract zip file!"
-  exit 1
-fi
+is_mounted /data || mount /data || is_mounted /cache || mount /cache || abort "! Unable to mount partitions"
+mount_partitions
 
-ui_print "- Mounting /system(ro), /cache, /data"
-mount -o ro /system 2>/dev/null
-mount /cache 2>/dev/null
-mount /data 2>/dev/null
+# read override variables
+getvar KEEPVERITY
+getvar KEEPFORCEENCRYPT
+getvar BOOTIMAGE
 
-if [ ! -f '/system/build.prop' ]; then
-  ui_print "! Failed: /system could not be mounted!"
-  exit 1
-fi
+# Detect version and architecture
+api_level_arch_detect
 
-if [ -z "$NOOVERRIDE" ]; then
-  # read override variables
-  getvar KEEPVERITY
-  getvar KEEPFORCEENCRYPT
-  getvar NORESTORE
-  getvar BOOTIMAGE
-fi
+[ $API -lt 21 ] && abort "! Magisk is only for Lollipop 5.0+ (SDK 21+)"
 
-if [ -z "$KEEPVERITY" ]; then
-  # we don't keep dm-verity by default
-  KEEPVERITY=false
-fi
-if [ -z "$KEEPFORCEENCRYPT" ]; then
-  # we don't keep forceencrypt by default
-  KEEPFORCEENCRYPT=false
-fi
-if [ -z "$NORESTORE" ]; then
-  # we restore ramdisk by default
-  NORESTORE=false
-fi
-
-SAMSUNG=false
-SAMSUNG_CHECK=$(cat /system/build.prop | grep "ro.build.fingerprint=" | grep -i "samsung")
-if [ $? -eq 0 ]; then
-  SAMSUNG=true
-fi
-
-API=$(grep_prop ro.build.version.sdk)
-ABI=$(grep_prop ro.product.cpu.abi | cut -c-3)
-ABI2=$(grep_prop ro.product.cpu.abi2 | cut -c-3)
-ABILONG=$(grep_prop ro.product.cpu.abi)
-
-ARCH=arm
-IS64BIT=false
-if [ "$ABI" = "x86" ]; then ARCH=x86; fi;
-if [ "$ABI2" = "x86" ]; then ARCH=x86; fi;
-if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; IS64BIT=true; fi;
-if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; IS64BIT=true; fi;
-
-
-if [ "$API" -lt "21" ]; then
-  ui_print "! Magisk is only for Lollipop 5.0+ (SDK 21+)"
-  exit 1
-fi
+# Check if system root is installed and remove
+remove_system_su
 
 ui_print "- Device platform: $ARCH"
 
 BINDIR=$INSTALLER/$ARCH
-chmod -R 755 $CHROMEDIR/futility $BINDIR
-
-find_boot_image
-if [ -z "$BOOTIMAGE" ]; then
-  ui_print "! Unable to detect boot image"
-  exit 1
-fi
+chmod -R 755 $CHROMEDIR $BINDIR
 
 ##########################################################################################
 # Environment
@@ -263,191 +76,59 @@ fi
 
 ui_print "- Constructing environment"
 
-if (is_mounted /data); then
-  rm -rf /data/busybox /data/magisk 2>/dev/null
-  mkdir -p /data/busybox
-  cp -af $BINDIR /data/magisk
-  cp -af $INSTALLER/common/init.magisk.rc $INSTALLER/common/magic_mask.sh /data/magisk
-  /data/magisk/busybox --install -s /data/busybox
-  ln -s /data/magisk/busybox /data/busybox/busybox
-  # Prevent issues
-  rm -f /data/busybox/su /data/busybox/sh
-  chcon -hR "u:object_r:system_file:s0" /data/magisk /data/busybox
-  chmod -R 755 /data/magisk /data/busybox
-  PATH=/data/busybox:$PATH
-else
-  rm -rf /cache/data_bin 2>/dev/null
-  mkdir -p /cache/data_bin
-  cp -af $BINDIR /cache/data_bin
-  cp -af $INSTALLER/common/init.magisk.rc $INSTALLER/common/magic_mask.sh /cache/data_bin
+is_mounted /data && MAGISKBIN=/data/magisk || MAGISKBIN=/cache/data_bin
+
+if $BOOTMODE; then
+  # Cleanup binary mirrors
+  umount -l /dev/magisk/mirror/bin 2>/dev/null
+  rm -rf /dev/magisk/mirror/bin 2>/dev/null
 fi
 
-##########################################################################################
-# Image
-##########################################################################################
+# Save our stock boot image dump before removing it
+mv /data/magisk/stock_boot* /data 2>/dev/null
 
-# Fix SuperSU.....
-($BOOTMODE) && $BINDIR/sepolicy-inject -s fsck --live
+# Copy required files
+rm -rf $MAGISKBIN 2>/dev/null
+mkdir -p $MAGISKBIN
+cp -af $BINDIR/. $COMMONDIR/. $CHROMEDIR $TMPDIR/bin/busybox $MAGISKBIN
+chmod -R 755 $MAGISKBIN
 
-if (is_mounted /data); then
-  IMG=/data/magisk.img
-else
-  IMG=/cache/magisk.img
-  ui_print "- Data unavalible, use cache workaround"
+# addon.d
+if [ -d /system/addon.d ]; then
+  ui_print "- Adding addon.d survival script"
+  mount -o rw,remount /system
+  cp -af $INSTALLER/addon.d/99-magisk.sh /system/addon.d/99-magisk.sh
+  chmod 755 /system/addon.d/99-magisk.sh
 fi
 
-if [ -f "$IMG" ]; then
-  ui_print "- $IMG detected!"
-else
-  ui_print "- Creating $IMG"
-  make_ext4fs -l 64M -a /magisk -S $INSTALLER/common/file_contexts_image $IMG
-fi
-
-mount_image $IMG /magisk
-if (! is_mounted /magisk); then
-  ui_print "! Image mount failed... abort"
-  exit 1
-fi
-MAGISKLOOP=$LOOPDEVICE
-
-mkdir -p /magisk/.core/magiskhide 2>/dev/null
-cp -af $INSTALLER/common/magiskhide/. /magisk/.core/magiskhide
+$BOOTMODE || recovery_actions
 
 ##########################################################################################
-# Boot image patch
+# Boot patching
 ##########################################################################################
 
+find_boot_image
+[ -z $BOOTIMAGE ] && abort "! Unable to detect boot image"
 ui_print "- Found Boot Image: $BOOTIMAGE"
 
-rm -rf $TMPDIR/boottmp 2>/dev/null
-mkdir -p $TMPDIR/boottmp
+SOURCEDMODE=true
+cd $MAGISKBIN
 
-CHROMEDIR=$INSTALLER/chromeos
-NEWBOOT=$TMPDIR/boottmp/new-boot.img
-UNPACKDIR=$TMPDIR/boottmp/bootunpack
-RAMDISK=$TMPDIR/boottmp/ramdisk
+# Source the boot patcher
+. $COMMONDIR/boot_patch.sh "$BOOTIMAGE"
 
-ORIGBOOT=$BOOTIMAGE
-
-ui_print "- Unpacking boot image"
-unpack_boot $ORIGBOOT
-
-# Restore ramdisk
-SUPERSU=false
-if (! $NORESTORE); then
-  if [ -d ".backup" ]; then
-    ui_print "- Restoring ramdisk with ramdisk backup"
-    cp -af .backup/. .
-    rm -rf magisk init.magisk.rc sbin/magic_mask.sh 2>/dev/null
-  else
-    [ -f "sbin/launch_daemonsu.sh" ] && SUPERSU=true
-    if ($SUPERSU); then
-      ui_print "- SuperSU patched boot detected!"
-      ui_print "- Adding auto patch script for SuperSU"
-      cp -af $INSTALLER/common/custom_ramdisk_patch.sh /data/custom_ramdisk_patch.sh
-    fi
-    if [ -d "magisk" ]; then
-      # If Magisk is installed and not SuperSU and no ramdisk backups
-      # Restore previous stock boot image
-      if (! $SUPERSU); then
-        cp -af /data/stock_boot_*.gz /data/stock_boot.img.gz 2>/dev/null
-        gzip -d /data/stock_boot.img.gz 2>/dev/null
-        if [ -f "/data/stock_boot.img" ]; then
-          ui_print "- Restoring boot image with backup"
-          $ORIGBOOT=/data/stock_boot.img
-          unpack_boot $ORIGBOOT
-        fi
-      fi
-      # Removing possible modifications
-      rm -rf magisk init.magisk.rc sbin/magic_mask.sh 2>/dev/null
-      rm -rf init.xposed.rc sbin/mount_xposed.sh 2>/dev/null
-    fi
-  fi
+if [ -f stock_boot* ]; then
+  rm -f /data/stock_boot* 2>/dev/null
+  mv stock_boot* /data
 fi
 
-# SuperSU already backup stock boot, no need to do again
-if (! $SUPERSU); then
-  ui_print "- Creating backups"
-  mkdir .backup 2>/dev/null
-  cp -af *fstab* verity_key sepolicy .backup 2>/dev/null
-  if (is_mounted /data); then
-    [ "$ORIGBOOT" != "/data/stock_boot.img" ] && dd if=$ORIGBOOT of=/data/stock_boot.img
-  else
-    dd if=$ORIGBOOT of=/cache/stock_boot.img
-  fi
-fi
+flash_boot_image new-boot.img "$BOOTIMAGE"
+rm -f new-boot.img
 
-# Patch ramdisk
-ui_print "- Patching ramdisk"
-
-# Add magisk entrypoint
-for INIT in init*.rc; do
-  if [ $(grep -c "import /init.environ.rc" $INIT) -ne "0" ] && [ `grep -c "import /init.magisk.rc" $INIT` -eq "0" ]; then
-    cp $INIT .backup
-    sed -i "/import \/init\.environ\.rc/iimport /init.magisk.rc" $INIT
-    break
-  fi
-done
-
-if (! $SUPERSU); then
-  sed -i "/selinux.reload_policy/d" init.rc
-  find . -type f -name "*fstab*" 2>/dev/null | while read FSTAB ; do
-    if (! $KEEPVERITY); then
-      sed -i "s/,support_scfs//g" $FSTAB
-      sed -i 's;,\{0,1\}verify\(=[^,]*\)\{0,1\};;g' $FSTAB
-    fi
-    if (! $KEEPFORCEENCRYPT); then
-      sed -i "s/forceencrypt/encryptable/g" $FSTAB
-      sed -i "s/forcefdeorfbe/encryptable/g" $FSTAB
-    fi
-  done
-  if (! $KEEPVERITY); then
-    rm verity_key 2>/dev/null
-  fi
-fi
-
-# sepolicy patches
-$BINDIR/sepolicy-inject --magisk -P sepolicy
-
-# Add new items
-mkdir -p magisk 2>/dev/null
-cp -af $INSTALLER/common/init.magisk.rc init.magisk.rc
-cp -af $INSTALLER/common/magic_mask.sh sbin/magic_mask.sh
-
-chmod 0755 magisk
-chmod 0750 init.magisk.rc sbin/magic_mask.sh
-
-ui_print "- Repacking boot image"
-repack_boot
-
-BOOTSIZE=`blockdev --getsize64 $BOOTIMAGE`
-NEWSIZE=`ls -l $NEWBOOT | awk '{print $5}'`
-if [ "$NEWSIZE" -gt "$BOOTSIZE" ]; then
-  ui_print "! Boot partition space insufficient"
-  ui_print "! Remove ramdisk backups and try again"
-  rm -rf $RAMDISK/.backup $NEWBOOT 2>/dev/null
-  repack_boot
-  NEWSIZE=`ls -l $NEWBOOT | awk '{print $5}'`
-  if [ "$NEWSIZE" -gt "$BOOTSIZE" ]; then
-    ui_print "! Boot partition size still too small..."
-    ui_print "! Unable to install Magisk"
-    exit 1
-  fi
-fi
-
-chmod 644 $NEWBOOT
-
-ui_print "- Flashing new boot image"
-[ ! -L "$BOOTIMAGE" ] && dd if=/dev/zero of=$BOOTIMAGE bs=4096 2>/dev/null
-dd if=$NEWBOOT of=$BOOTIMAGE bs=4096
-
-if (! $BOOTMODE); then
-  ui_print "- Unmounting partitions"
-  umount /magisk
-  losetup -d $MAGISKLOOP
-  umount /system
-  rmdir /magisk
-fi
+cd /
+# Cleanups
+$BOOTMODE || recovery_cleanup
+rm -rf $TMPDIR
 
 ui_print "- Done"
 exit 0

scripts/init.magisk.rc

@@ -1,14 +1,15 @@
 # Triggers
 
 on post-fs
+    start logd
     start magisk_pfs
     wait /dev/.magisk.unblock 20
-    rm /dev/.magisk.unblock
 
 on post-fs-data
-    start magisk_pfsd
-    wait /dev/.magisk.unblock 40
     rm /dev/.magisk.unblock
+    load_persist_props
+    start magisk_pfsd
+    wait /dev/.magisk.unblock 60
 
 on property:magisk.restart_pfsd=1
     trigger post-fs-data
@@ -16,19 +17,19 @@ on property:magisk.restart_pfsd=1
 # Services
 
 # launch post-fs script
-service magisk_pfs /sbin/magic_mask.sh post-fs
+service magisk_pfs /sbin/magisk --post-fs
     user root
     seclabel u:r:su:s0
     oneshot
 
 # launch post-fs-data script
-service magisk_pfsd /sbin/magic_mask.sh post-fs-data
+service magisk_pfsd /sbin/magisk --post-fs-data
     user root
     seclabel u:r:su:s0
     oneshot
 
 # launch late_start script
-service magisk_service /sbin/magic_mask.sh service
+service magisk_service /sbin/magisk  --service
     class late_start
     user root
     seclabel u:r:su:s0

scripts/magic_mask.sh

@@ -1,487 +0,0 @@
-#!/system/bin/sh
-
-LOGFILE=/cache/magisk.log
-IMG=/data/magisk.img
-
-MOUNTPOINT=/magisk
-
-COREDIR=$MOUNTPOINT/.core
-
-TMPDIR=/dev/magisk
-DUMMDIR=$TMPDIR/dummy
-MIRRDIR=$TMPDIR/mirror
-MOUNTINFO=$TMPDIR/mnt
-
-# Use the included busybox for maximum compatibility and reliable results
-# e.g. we rely on the option "-c" for cp (reserve contexts), and -exec for find
-TOOLPATH=/data/busybox
-BINPATH=/data/magisk
-OLDPATH=$PATH
-PATH=$TOOLPATH:$OLDPATH
-
-# Default permissions
-umask 022
-
-
-log_print() {
-  echo "$1"
-  echo "$1" >> $LOGFILE
-  log -p i -t Magisk "$1"
-}
-
-mktouch() {
-  mkdir -p ${1%/*} 2>/dev/null
-  if [ -z "$2" ]; then
-    touch "$1" 2>/dev/null
-  else
-    echo "$2" > "$1" 2>/dev/null
-  fi
-}
-
-unblock() {
-  touch /dev/.magisk.unblock
-  exit
-}
-
-run_scripts() {
-  PATH=$OLDPATH
-  BASE=$MOUNTPOINT
-  for MOD in $BASE/* ; do
-    if [ ! -f "$MOD/disable" ]; then
-      if [ -f "$MOD/$1.sh" ]; then
-        chmod 755 $MOD/$1.sh
-        chcon "u:object_r:system_file:s0" "$MOD/$1.sh"
-        log_print "$1: $MOD/$1.sh"
-        sh $MOD/$1.sh
-      fi
-    fi
-  done
-  PATH=$TOOLPATH:$OLDPATH
-}
-
-loopsetup() {
-  LOOPDEVICE=
-  for DEV in $(ls /dev/block/loop*); do
-    if [ `losetup $DEV $1 >/dev/null 2>&1; echo $?` -eq 0 ]; then
-      LOOPDEVICE=$DEV
-      break
-    fi
-  done
-}
-
-target_size_check() {
-  e2fsck -p -f $1
-  curBlocks=`e2fsck -n $1 2>/dev/null | cut -d, -f3 | cut -d\  -f2`;
-  curUsedM=$((`echo "$curBlocks" | cut -d/ -f1` * 4 / 1024));
-  curSizeM=$((`echo "$curBlocks" | cut -d/ -f2` * 4 / 1024));
-  curFreeM=$((curSizeM - curUsedM));
-}
-
-travel() {
-  cd "$1/$2"
-  if [ -f ".replace" ]; then
-    rm -rf "$MOUNTINFO/$2"
-    mktouch "$MOUNTINFO/$2" "$1"
-  else
-    for ITEM in * ; do
-      if [ ! -e "/$2/$ITEM" ]; then
-        # New item found
-        if [ "$2" = "system" ]; then
-          # We cannot add new items to /system root, delete it
-          rm -rf "$ITEM"
-        else
-          # If we are in a higher level, delete the lower levels
-          rm -rf "$MOUNTINFO/dummy/$2"
-          # Mount the dummy parent
-          mktouch "$MOUNTINFO/dummy/$2"
-
-          if [ -d "$ITEM" ]; then
-            # Create new dummy directory and mount it
-            mkdir -p "$DUMMDIR/$2/$ITEM"
-            mktouch "$MOUNTINFO/$2/$ITEM" "$1"
-          elif [ -L "$ITEM" ]; then
-            # Symlinks are small, copy them
-            mkdir -p "$DUMMDIR/$2" 2>/dev/null
-            cp -afc "$ITEM" "$DUMMDIR/$2/$ITEM"
-          else
-            # Create new dummy file and mount it
-            mktouch "$DUMMDIR/$2/$ITEM"
-            mktouch "$MOUNTINFO/$2/$ITEM" "$1"
-          fi
-        fi
-      else
-        if [ -d "$ITEM" ]; then
-          # It's an directory, travel deeper
-          (travel "$1" "$2/$ITEM")
-        elif [ ! -L "$ITEM" ]; then
-          # Mount this file
-          mktouch "$MOUNTINFO/$2/$ITEM" "$1"
-        fi
-      fi
-    done
-  fi
-}
-
-clone_dummy() {
-  for ITEM in "$1/"* ; do
-    if [ -d "$DUMMDIR$ITEM" ]; then
-      (clone_dummy "$ITEM")
-    elif [ ! -e "$DUMMDIR$ITEM" ]; then
-      if [ -d "$ITEM" ]; then
-        # Create dummy directory
-        mkdir -p "$DUMMDIR$ITEM"
-      elif [ -L "$ITEM" ]; then
-        # Symlinks are small, copy them
-        cp -afc "$ITEM" "$DUMMDIR$ITEM"
-      else
-        # Create dummy file
-        mktouch "$DUMMDIR$ITEM"
-      fi
-      chcon -f "u:object_r:system_file:s0" "$DUMMDIR$ITEM"
-    fi
-  done
-}
-
-bind_mount() {
-  if [ -e "$1" -a -e "$2" ]; then
-    mount -o bind $1 $2
-    if [ "$?" -eq "0" ]; then 
-      log_print "Mount: $1"
-    else 
-      log_print "Mount Fail: $1"
-    fi 
-  fi
-}
-
-merge_image() {
-  if [ -f "$1" ]; then
-    log_print "$1 found"
-    if [ -f "$IMG" ]; then
-      log_print "$IMG found, attempt to merge"
-
-      # Handle large images
-      target_size_check $1
-      MERGEUSED=$curUsedM
-      target_size_check $IMG
-      if [ "$MERGEUSED" -gt "$curFreeM" ]; then
-        NEWDATASIZE=$((((MERGEUSED + curUsedM) / 32 + 2) * 32))
-        log_print "Expanding $IMG to ${NEWDATASIZE}M..."
-        resize2fs $IMG ${NEWDATASIZE}M
-      fi
-
-      # Start merging
-      mkdir /cache/data_img
-      mkdir /cache/merge_img
-
-      # setup loop devices
-      loopsetup $IMG
-      LOOPDATA=$LOOPDEVICE
-      log_print "$LOOPDATA $IMG"
-
-      loopsetup $1
-      LOOPMERGE=$LOOPDEVICE
-      log_print "$LOOPMERGE $1"
-
-      if [ ! -z "$LOOPDATA" ]; then
-        if [ ! -z "$LOOPMERGE" ]; then
-          # if loop devices have been setup, mount images
-          OK=true
-
-          if [ `mount -t ext4 -o rw,noatime $LOOPDATA /cache/data_img >/dev/null 2>&1; echo $?` -ne 0 ]; then
-            OK=false
-          fi
-
-          if [ `mount -t ext4 -o rw,noatime $LOOPMERGE /cache/merge_img >/dev/null 2>&1; echo $?` -ne 0 ]; then
-            OK=false
-          fi
-
-          if ($OK); then
-            # Merge (will reserve selinux contexts)
-            cd /cache/merge_img
-            for MOD in *; do
-              if [ "$MOD" != "lost+found" ]; then
-                log_print "Merging: $MOD"
-                rm -rf /cache/data_img/$MOD
-              fi
-            done
-            cp -afc . /cache/data_img
-            log_print "Merge complete"
-            cd /
-          fi
-
-          umount /cache/data_img
-          umount /cache/merge_img
-        fi
-      fi
-
-      losetup -d $LOOPDATA
-      losetup -d $LOOPMERGE
-
-      rmdir /cache/data_img
-      rmdir /cache/merge_img
-    else 
-      log_print "Moving $1 to $IMG "
-      mv $1 $IMG
-    fi
-    rm -f $1
-  fi
-}
-
-case $1 in
-  post-fs )
-    mv $LOGFILE /cache/last_magisk.log
-    touch $LOGFILE
-    chmod 644 $LOGFILE
-
-    # No more cache mods!
-    # Only for multirom!
-
-    log_print "** Magisk post-fs mode running..."
-
-    # Cleanup previous version stuffs...
-    rm -rf /cache/magisk /cache/magisk_merge /cache/magiskhide.log
-
-    if [ -d "/cache/magisk_mount" ]; then
-      log_print "Mounting cache files"
-      find /cache/magisk_mount -type f 2>/dev/null | while read ITEM ; do
-        chmod 644 "$ITEM"
-        chcon "u:object_r:system_file:s0" "$ITEM"
-        TARGET="${ITEM#/cache/magisk_mount}"
-        bind_mount "$ITEM" "$TARGET"
-      done
-    fi
-
-    unblock
-    ;;
-
-  post-fs-data )
-    if [ `mount | grep " /data " >/dev/null 2>&1; echo $?` -ne 0 ]; then
-      # /data not mounted yet, we will be called again later
-      unblock
-    fi
-
-    if [ `mount | grep " /data " | grep "tmpfs" >/dev/null 2>&1; echo $?` -eq 0 ]; then
-      # /data not mounted yet, we will be called again later
-      unblock
-    fi
-
-    # Don't run twice
-    if [ "`getprop magisk.restart_pfsd`" != "1" ]; then
-
-      log_print "** Magisk post-fs-data mode running..."
-
-      # Live patch sepolicy
-      $BINPATH/sepolicy-inject --live -s su
-
-      # Multirom functions should go here, not available right now
-      MULTIROM=false
-
-      # Cache support
-      if [ -d "/cache/data_bin" ]; then
-        rm -rf $BINPATH $TOOLPATH
-        mkdir -p $TOOLPATH
-        mv /cache/data_bin $BINPATH
-        chmod -R 755 $BINPATH $TOOLPATH
-        $BINPATH/busybox --install -s $TOOLPATH
-        ln -s $BINPATH/busybox $TOOLPATH/busybox
-        # Prevent issues
-        rm -f $TOOLPATH/su $TOOLPATH/sh
-      fi
-
-      mv /cache/stock_boot.img /data 2>/dev/null
-
-      find $BINPATH -exec chcon -h "u:object_r:system_file:s0" {} \;
-      find $TOOLPATH -exec chcon -h "u:object_r:system_file:s0" {} \;
-      chmod -R 755 $BINPATH $TOOLPATH
-
-      # Image merging
-      chmod 644 $IMG /cache/magisk.img /data/magisk_merge.img 2>/dev/null
-      merge_image /cache/magisk.img
-      merge_image /data/magisk_merge.img
-
-      # Mount magisk.img
-      [ ! -d "$MOUNTPOINT" ] && mkdir -p $MOUNTPOINT
-      if [ `cat /proc/mounts | grep $MOUNTPOINT >/dev/null 2>&1; echo $?` -ne 0 ]; then
-        loopsetup $IMG
-        if [ ! -z "$LOOPDEVICE" ]; then
-          mount -t ext4 -o rw,noatime,suid $LOOPDEVICE $MOUNTPOINT
-        fi
-      fi
-
-      if [ `cat /proc/mounts | grep $MOUNTPOINT >/dev/null 2>&1; echo $?` -ne 0 ]; then
-        log_print "magisk.img mount failed, nothing to do :("
-        unblock
-      fi
-
-      # Remove empty directories, legacy paths and symlinks
-      rm -rf $COREDIR/bin $COREDIR/dummy $COREDIR/mirror
-      find $MOUNTPOINT -type d -depth ! -path "*core*" -exec rmdir {} \; 2>/dev/null
-
-      # Remove modules
-      for MOD in $MOUNTPOINT/* ; do
-        if [ -f "$MOD/remove" ] || [ "$MOD" = "zzsupersu" ]; then
-          log_print "Remove module: $MOD"
-          rm -rf $MOD
-        fi
-      done
-
-      # Unmount, shrink, remount
-      if [ `umount $MOUNTPOINT >/dev/null 2>&1; echo $?` -eq 0 ]; then
-        losetup -d $LOOPDEVICE
-        target_size_check $IMG
-        NEWDATASIZE=$(((curUsedM / 32 + 2) * 32))
-        if [ "$curSizeM" -gt "$NEWDATASIZE" ]; then
-          log_print "Shrinking $IMG to ${NEWDATASIZE}M..."
-          resize2fs $IMG ${NEWDATASIZE}M
-        fi
-        loopsetup $IMG
-        if [ ! -z "$LOOPDEVICE" ]; then
-          mount -t ext4 -o rw,noatime,suid $LOOPDEVICE $MOUNTPOINT
-        fi
-        if [ `cat /proc/mounts | grep $MOUNTPOINT >/dev/null 2>&1; echo $?` -ne 0 ]; then
-          log_print "magisk.img mount failed, nothing to do :("
-          unblock
-        fi
-      fi
-
-      log_print "Preparing modules"
-
-      mkdir -p $DUMMDIR
-      mkdir -p $MIRRDIR/system
-
-      # Travel through all mods, all magic happens here
-      for MOD in $MOUNTPOINT/* ; do
-        if [ -f "$MOD/auto_mount" -a -d "$MOD/system" -a ! -f "$MOD/disable" ]; then
-          (travel $MOD system)
-        fi
-      done
-
-      # Proper permissions for generated items
-      find $TMPDIR -exec chcon -h "u:object_r:system_file:s0" {} \;
-
-      # linker(64), t*box required
-      if [ -f "$MOUNTINFO/dummy/system/bin" ]; then
-        cd /system/bin
-        cp -afc linker* t*box $DUMMDIR/system/bin/
-      fi
-
-      # Some libraries are required
-      LIBS="libc++.so libc.so libcutils.so libm.so libstdc++.so libcrypto.so liblog.so libpcre.so libselinux.so libpackagelistparser.so"
-      if [ -f "$MOUNTINFO/dummy/system/lib" ]; then
-        cd /system/lib
-        cp -afc $LIBS $DUMMDIR/system/lib
-        # Crash prevention!!
-        rm -f $COREDIR/magiskhide/enable 2>/dev/null
-      fi
-      if [ -f "$MOUNTINFO/dummy/system/lib64" ]; then
-        cd /system/lib64
-        cp -afc $LIBS $DUMMDIR/system/lib64
-        # Crash prevention!!
-        rm -f $COREDIR/magiskhide/enable 2>/dev/null
-      fi
-
-      # vendor libraries are device dependent, had no choice but copy them all if needed....
-      if [ -f "$MOUNTINFO/dummy/system/vendor" ]; then
-        cp -afc /system/vendor/lib/. $DUMMDIR/system/vendor/lib
-        [ -d "/system/vendor/lib64" ] && cp -afc /system/vendor/lib64/. $DUMMDIR/system/vendor/lib64
-      fi
-      if [ -f "$MOUNTINFO/dummy/system/vendor/lib" ]; then
-        cp -afc /system/vendor/lib/. $DUMMDIR/system/vendor/lib
-      fi
-      if [ -f "$MOUNTINFO/dummy/system/vendor/lib64" ]; then
-        cp -afc /system/vendor/lib64/. $DUMMDIR/system/vendor/lib64
-      fi
-
-      # Remove crap folder
-      rm -rf $MOUNTPOINT/lost+found
-      
-      # Start doing tasks
-      
-      # Stage 1
-      log_print "Bind mount dummy system"
-      find $MOUNTINFO/dummy -type f 2>/dev/null | while read ITEM ; do
-        TARGET=${ITEM#$MOUNTINFO/dummy}
-        ORIG="$DUMMDIR$TARGET"
-        clone_dummy "$TARGET"
-        bind_mount "$ORIG" "$TARGET"
-      done
-
-      # Stage 2
-      log_print "Bind mount module items"
-      find $MOUNTINFO/system -type f 2>/dev/null | while read ITEM ; do
-        TARGET=${ITEM#$MOUNTINFO}
-        ORIG=`cat $ITEM`$TARGET
-        bind_mount $ORIG $TARGET
-        rm -f $DUMMDIR${TARGET%/*}/.dummy 2>/dev/null
-      done
-
-      # Run scripts
-      run_scripts post-fs-data
-
-      # Bind hosts for Adblock apps
-      if [ -f "$COREDIR/hosts" ]; then
-        log_print "Enabling systemless hosts file support"
-        bind_mount $COREDIR/hosts /system/etc/hosts
-      fi
-
-      # Expose busybox
-      if [ -f "$COREDIR/busybox/enable" ]; then
-        log_print "Enabling BusyBox"
-        cp -afc /data/busybox/. $COREDIR/busybox
-        cp -afc /system/xbin/. $COREDIR/busybox
-        chmod -R 755 $COREDIR/busybox
-        chcon -hR "u:object_r:system_file:s0" $COREDIR/busybox
-        bind_mount $COREDIR/busybox /system/xbin
-      fi
-
-      # Stage 3
-      log_print "Bind mount system mirror"
-      bind_mount /system $MIRRDIR/system
-
-      # Stage 4
-      log_print "Bind mount mirror items"
-      # Find all empty directores and dummy files, they should be mounted by original files in /system
-      TOOLPATH=/data/busybox find $DUMMDIR -type d \
-      -exec sh -c '[ -z "`ls -A $1`" ] && echo $1' -- {} \; \
-      -o \( -type f -size 0 -print \) | \
-      while read ITEM ; do
-        ORIG=${ITEM/dummy/mirror}
-        TARGET=${ITEM#$DUMMDIR}
-        bind_mount $ORIG $TARGET
-      done
-
-      # Restart post-fs-data if necessary (multirom)
-      ($MULTIROM) && setprop magisk.restart_pfsd 1
-
-    fi
-    unblock
-    ;;
-
-  service )
-    # Version info
-    MAGISK_VERSION_STUB
-    log_print "** Magisk late_start service mode running..."
-    run_scripts service
-
-    # Magisk Hide
-    if [ -f "$COREDIR/magiskhide/enable" ]; then
-      log_print "** Removing tampered read-only system props"
-
-      VERIFYBOOT=`getprop ro.boot.verifiedbootstate`
-      FLASHLOCKED=`getprop ro.boot.flash.locked`
-      VERITYMODE=`getprop ro.boot.veritymode`
-
-      [ ! -z "$VERIFYBOOT" -a "$VERIFYBOOT" != "green" ] && log_print "`$BINPATH/resetprop -v -n ro.boot.verifiedbootstate green`"
-      [ ! -z "$FLASHLOCKED" -a "$FLASHLOCKED" != "1" ] && log_print "`$BINPATH/resetprop -v -n ro.boot.flash.locked 1`"
-      [ ! -z "$VERITYMODE" -a "$VERITYMODE" != "enforcing" ] && log_print "`$BINPATH/resetprop -v -n ro.boot.veritymode enforcing`"
-
-      mktouch $COREDIR/magiskhide/hidelist
-      chmod -R 755 $COREDIR/magiskhide
-      # Add Safety Net preset
-      $COREDIR/magiskhide/add com.google.android.gms.unstable
-      log_print "** Starting Magisk Hide"
-      /data/magisk/magiskhide
-    fi
-    ;;
-
-esac

scripts/magisk_uninstaller.sh

@@ -0,0 +1,110 @@
+#!/system/bin/sh
+##########################################################################################
+#
+# Magisk Uninstaller
+# by topjohnwu
+#
+# This script can be placed in /cache/magisk_uninstaller.sh
+# The Magisk main binary will pick up the script, and uninstall itself, following a reboot
+# This script can also be used in flashable zip with the uninstaller_loader.sh
+#
+# This script will try to do restoration with the following:
+# 1-1. Find and restore the original stock boot image dump (OTA proof)
+# 1-2. If 1-1 fails, restore ramdisk from the internal backup
+#      (ramdisk fully restored, not OTA friendly)
+# 1-3. If 1-2 fails, it will remove added files in ramdisk, however modified files
+#      are remained modified, because we have no backups. By doing so, Magisk will
+#      not be started at boot, but this isn't actually 100% cleaned up
+# 2. Remove all Magisk related files
+#    (The list is LARGE, most likely due to bad decision in early versions
+#    the latest versions has much less bloat to cleanup)
+#
+##########################################################################################
+
+[ -z $BOOTMODE ] && BOOTMODE=false
+
+MAGISKBIN=/data/magisk
+CHROMEDIR=$MAGISKBIN/chromeos
+
+if [ ! -f $MAGISKBIN/magiskboot -o ! -f $MAGISKBIN/util_functions.sh ]; then
+  echo "! Cannot find $MAGISKBIN"
+  exit 1
+fi
+
+if $BOOTMODE; then
+  # Load utility functions
+  . $MAGISKBIN/util_functions.sh
+  boot_actions
+  mount_partitions
+fi
+
+cd $MAGISKBIN
+
+# Find the boot image
+find_boot_image
+[ -z $BOOTIMAGE ] && abort "! Unable to detect boot image"
+
+ui_print "- Found Boot Image: $BOOTIMAGE"
+
+migrate_boot_backup
+
+ui_print "- Unpacking boot image"
+./magiskboot --unpack "$BOOTIMAGE"
+CHROMEOS=false
+case $? in
+  1 )
+    abort "! Unable to unpack boot image"
+    ;;
+  2 )
+    CHROMEOS=true
+    ;;
+  3 )
+    ui_print "! Sony ELF32 format detected"
+    abort "! Please use BootBridge from @AdrianDC to flash Magisk"
+    ;;
+  4 )
+    ui_print "! Sony ELF64 format detected"
+    abort "! Stock kernel cannot be patched, please use a custom kernel"
+esac
+
+# Detect boot image state
+ui_print "- Checking ramdisk status"
+./magiskboot --cpio-test ramdisk.cpio
+case $? in
+  0 )  # Stock boot
+    ui_print "- Stock boot image detected!"
+    abort "! Magisk is not installed!"
+    ;;
+  1 )  # Magisk patched
+    ui_print "- Magisk patched image detected!"
+    # Find SHA1 of stock boot image
+    [ -z $SHA1 ] && SHA1=`./magiskboot --cpio-stocksha1 ramdisk.cpio 2>/dev/null`
+    [ ! -z $SHA1 ] && STOCKBOOT=/data/stock_boot_${SHA1}.img.gz
+    if [ -f "$STOCKBOOT" ]; then
+      ui_print "- Boot image backup found!"
+    else
+      ui_print "! Boot image backup unavailable"
+      ui_print "- Restoring ramdisk with internal backup"
+      ./magiskboot --cpio-restore ramdisk.cpio
+      ./magiskboot --repack $BOOTIMAGE
+      # Sign chromeos boot
+      $CHROMEOS && sign_chromeos
+      STOCKBOOT=new-boot.img
+    fi
+    ;;
+  2 ) # Other patched
+    ui_print "! Boot image patched by other programs!"
+    abort "! Cannot uninstall"
+    ;;
+esac
+
+flash_boot_image $STOCKBOOT "$BOOTIMAGE"
+
+cd /
+
+ui_print "- Removing Magisk files"
+rm -rf  /cache/*magisk* /cache/unblock /data/*magisk* /data/cache/*magisk* /data/property/*magisk* \
+        /data/Magisk.apk /data/busybox /data/custom_ramdisk_patch.sh  \
+        /data/app/com.topjohnwu.magisk* /data/user*/*/com.topjohnwu.magisk 2>/dev/null
+
+$BOOTMODE && reboot

scripts/uninstaller_loader.sh

@@ -0,0 +1,82 @@
+#!/sbin/sh
+##########################################################################################
+#
+# Magisk Uninstaller (used in recovery)
+# by topjohnwu
+#
+# This script will load the real uninstaller in a flashable zip
+#
+##########################################################################################
+
+##########################################################################################
+# Preparation
+##########################################################################################
+
+BOOTMODE=false
+# This path should work in any cases
+TMPDIR=/dev/tmp
+
+INSTALLER=$TMPDIR/install
+# Default permissions
+umask 022
+
+OUTFD=$2
+ZIP=$3
+
+if [ ! -f $INSTALLER/util_functions.sh ]; then
+  echo "! Unable to extract zip file!"
+  exit 1
+fi
+
+# Load utility functions
+. $INSTALLER/util_functions.sh
+get_outfd
+
+##########################################################################################
+# Main
+##########################################################################################
+
+ui_print "************************"
+ui_print "   Magisk Uninstaller   "
+ui_print "************************"
+
+is_mounted /data || mount /data || abort "! Unable to mount partitions"
+is_mounted /cache || mount /cache 2>/dev/null
+mount_partitions
+
+api_level_arch_detect
+
+ui_print "- Device platform: $ARCH"
+CHROMEDIR=$INSTALLER/chromeos
+BINDIR=$INSTALLER/$ARCH
+
+##########################################################################################
+# Detection all done, start installing
+##########################################################################################
+
+MAGISKBIN=/data/magisk
+
+if is_mounted /data; then
+  recovery_actions
+  # Save our stock boot image dump before removing it
+  mv $MAGISKBIN/stock_boot* /data 2>/dev/null
+  # Copy the binaries to /data/magisk, in case they do not exist
+  rm -rf $MAGISKBIN 2>/dev/null
+  mkdir -p $MAGISKBIN
+  cp -af $BINDIR/. $CHROMEDIR $TMPDIR/bin/busybox $INSTALLER/util_functions.sh $MAGISKBIN
+  chmod -R 755 $MAGISKBIN
+  # Run the actual uninstallation
+  . $INSTALLER/magisk_uninstaller.sh
+  recovery_cleanup
+else
+  ui_print "! Data unavailable"
+  ui_print "! Placing uninstall script to /cache"
+  ui_print "! The device might reboot multiple times"
+  cp -af $INSTALLER/magisk_uninstaller.sh /cache/magisk_uninstaller.sh
+  ui_print "- Rebooting....."
+  sleep 5
+  reboot
+fi
+
+ui_print "- Done"
+exit 0

scripts/update_binary.sh

@@ -0,0 +1,31 @@
+# EX_ARM, EX_X86, BB_ARM, and BB_X86 should be generated in build.py
+dirname_wrap() {
+  case "$1" in
+    */*) dir=${1%/*}; [ -z $dir ] && echo "/" || echo $dir ;;
+    *) echo "." ;;
+  esac
+}
+[ "$1" = "indep" ] && INDEP=true || INDEP=false
+$INDEP && TMPDIR="`dirname_wrap "${BASH_SOURCE:-$0}"`" || TMPDIR=/dev/tmp
+INSTALLER=$TMPDIR/install; BBDIR=$TMPDIR/bin
+EXBIN=$BBDIR/b64xz; BBBIN=$BBDIR/busybox
+$INDEP || rm -rf $TMPDIR 2>/dev/null;
+mkdir -p $BBDIR 2>/dev/null
+touch $EXBIN $BBBIN; chmod 755 $EXBIN $BBBIN
+echo -ne $EX_ARM > $EXBIN
+if $EXBIN --test 2>/dev/null; then
+  echo $BB_ARM | $EXBIN > $BBBIN
+else
+  echo -ne $EX_X86 > $EXBIN
+  echo $BB_X86 | $EXBIN > $BBBIN
+fi
+$BBBIN --install -s $TMPDIR/bin
+export PATH=$BBDIR:$PATH
+if $INDEP; then
+  shift
+  exec sh "$@"
+else
+  mkdir -p $INSTALLER
+  unzip -o "$3" -d $INSTALLER
+  exec sh $INSTALLER/META-INF/com/google/android/updater-script $@
+fi

scripts/util_functions.sh

@@ -0,0 +1,296 @@
+##########################################################################################
+#
+# Magisk General Utility Functions
+# by topjohnwu
+#
+# Used everywhere in Magisk
+#
+##########################################################################################
+
+MAGISK_VERSION_STUB
+SCRIPT_VERSION=$MAGISK_VER_CODE
+
+# Default location, will override if needed
+MAGISKBIN=/data/magisk
+
+get_outfd() {
+  readlink /proc/$$/fd/$OUTFD 2>/dev/null | grep /tmp >/dev/null
+  if [ "$?" -eq "0" ]; then
+    OUTFD=0
+
+    for FD in `ls /proc/$$/fd`; do
+      readlink /proc/$$/fd/$FD 2>/dev/null | grep pipe >/dev/null
+      if [ "$?" -eq "0" ]; then
+        ps | grep " 3 $FD " | grep -v grep >/dev/null
+        if [ "$?" -eq "0" ]; then
+          OUTFD=$FD
+          break
+        fi
+      fi
+    done
+  fi
+}
+
+ui_print() {
+  if $BOOTMODE; then
+    echo "$1"
+  else
+    echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
+    echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
+  fi
+}
+
+mount_partitions() {
+  # Check A/B slot
+  SLOT=`getprop ro.boot.slot_suffix`
+  [ -z $SLOT ] || ui_print "- A/B partition detected, current slot: $SLOT"
+  ui_print "- Mounting /system, /vendor"
+  is_mounted /system || [ -f /system/build.prop ] || mount -o ro /system 2>/dev/null
+  if ! is_mounted /system && ! [ -f /system/build.prop ]; then
+    SYSTEMBLOCK=`find /dev/block -iname system$SLOT | head -n 1`
+    mount -t ext4 -o ro $SYSTEMBLOCK /system
+  fi
+  is_mounted /system || [ -f /system/build.prop ] || abort "! Cannot mount /system"
+  cat /proc/mounts | grep -E '/dev/root|/system_root' >/dev/null && SKIP_INITRAMFS=true || SKIP_INITRAMFS=false
+  if [ -f /system/init.rc ]; then
+    SKIP_INITRAMFS=true
+    mkdir /system_root 2>/dev/null
+    mount --move /system /system_root
+    mount -o bind /system_root/system /system
+  fi
+  $SKIP_INITRAMFS && ui_print "- Device skip_initramfs detected"
+  if [ -L /system/vendor ]; then
+    # Seperate /vendor partition
+    is_mounted /vendor || mount -o ro /vendor 2>/dev/null
+    if ! is_mounted /vendor; then
+      VENDORBLOCK=`find /dev/block -iname vendor$SLOT | head -n 1`
+      mount -t ext4 -o ro $VENDORBLOCK /vendor
+    fi
+    is_mounted /vendor || abort "! Cannot mount /vendor"
+  fi
+}
+
+grep_prop() {
+  REGEX="s/^$1=//p"
+  shift
+  FILES=$@
+  [ -z "$FILES" ] && FILES='/system/build.prop'
+  sed -n "$REGEX" $FILES 2>/dev/null | head -n 1
+}
+
+getvar() {
+  local VARNAME=$1
+  local VALUE=$(eval echo \$$VARNAME)
+  [ ! -z $VALUE ] && return
+  for DIR in /dev /data /cache /system; do
+    VALUE=`grep_prop $VARNAME $DIR/.magisk`
+    [ ! -z $VALUE ] && break;
+  done
+  eval $VARNAME=\$VALUE
+}
+
+resolve_link() {
+  RESOLVED="$1"
+  while RESOLVE=`readlink $RESOLVED`; do
+    RESOLVED=$RESOLVE
+  done
+  echo $RESOLVED
+}
+
+find_boot_image() {
+  if [ -z "$BOOTIMAGE" ]; then
+    if [ ! -z $SLOT ]; then
+      BOOTIMAGE=`find /dev/block -iname boot$SLOT | head -n 1` 2>/dev/null
+    else
+      for BLOCK in boot_a kern-a android_boot kernel boot lnx bootimg; do
+        BOOTIMAGE=`find /dev/block -iname $BLOCK | head -n 1` 2>/dev/null
+        [ ! -z $BOOTIMAGE ] && break
+      done
+    fi
+  fi
+  # Recovery fallback
+  if [ -z "$BOOTIMAGE" ]; then
+    for FSTAB in /etc/*fstab*; do
+      BOOTIMAGE=`grep -v '#' $FSTAB | grep -E '/boot[^a-zA-Z]' | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
+      [ ! -z $BOOTIMAGE ] && break
+    done
+  fi
+  BOOTIMAGE=`resolve_link $BOOTIMAGE`
+}
+
+migrate_boot_backup() {
+  # Update the broken boot backup
+  if [ -f /data/stock_boot_.img.gz ]; then
+    $MAGISKBIN/magiskboot --decompress /data/stock_boot_.img.gz
+    mv /data/stock_boot_.img /data/stock_boot.img
+  fi
+  # Update our previous backup to new format if exists
+  if [ -f /data/stock_boot.img ]; then
+    ui_print "- Migrating boot image backup"
+    SHA1=`$MAGISKBIN/magiskboot --sha1 /data/stock_boot.img 2>/dev/null`
+    STOCKDUMP=/data/stock_boot_${SHA1}.img
+    mv /data/stock_boot.img $STOCKDUMP
+    $MAGISKBIN/magiskboot --compress $STOCKDUMP
+  fi
+  mv /data/magisk/stock_boot* /data 2>/dev/null
+}
+
+flash_boot_image() {
+  # Make sure all blocks are writable
+  $MAGISKBIN/magisk --unlock-blocks
+  case "$1" in
+    *.gz) COMMAND="gzip -d < \"$1\"";;
+    *)    COMMAND="cat \"$1\"";;
+  esac
+  case "$2" in
+    /dev/block/*)
+      ui_print "- Flashing new boot image"
+      eval $COMMAND | cat - /dev/zero | dd of="$2" bs=4096 >/dev/null 2>&1
+      ;;
+    *)
+      ui_print "- Storing new boot image"
+      eval $COMMAND | dd of="$2" bs=4096 >/dev/null 2>&1
+      ;;
+  esac
+}
+
+sign_chromeos() {
+  echo > empty
+
+  ./chromeos/futility vbutil_kernel --pack new-boot.img.signed \
+  --keyblock ./chromeos/kernel.keyblock --signprivate ./chromeos/kernel_data_key.vbprivk \
+  --version 1 --vmlinuz new-boot.img --config empty --arch arm --bootloader empty --flags 0x1
+
+  rm -f empty new-boot.img
+  mv new-boot.img.signed new-boot.img
+}
+
+is_mounted() {
+  if [ ! -z "$2" ]; then
+    cat /proc/mounts | grep $1 | grep $2, >/dev/null
+  else
+    cat /proc/mounts | grep $1 >/dev/null
+  fi
+  return $?
+}
+
+remove_system_su() {
+  if [ -f /system/bin/su -o -f /system/xbin/su ] && [ ! -f /su/bin/su ]; then
+    ui_print "! System installed root detected, mount rw :("
+    mount -o rw,remount /system
+    # SuperSU
+    if [ -e /system/bin/.ext/.su ]; then
+      mv -f /system/bin/app_process32_original /system/bin/app_process32 2>/dev/null
+      mv -f /system/bin/app_process64_original /system/bin/app_process64 2>/dev/null
+      mv -f /system/bin/install-recovery_original.sh /system/bin/install-recovery.sh 2>/dev/null
+      cd /system/bin
+      if [ -e app_process64 ]; then
+        ln -sf app_process64 app_process
+      else
+        ln -sf app_process32 app_process
+      fi
+    fi
+    rm -rf /system/.pin /system/bin/.ext /system/etc/.installed_su_daemon /system/etc/.has_su_daemon \
+    /system/xbin/daemonsu /system/xbin/su /system/xbin/sugote /system/xbin/sugote-mksh /system/xbin/supolicy \
+    /system/bin/app_process_init /system/bin/su /cache/su /system/lib/libsupol.so /system/lib64/libsupol.so \
+    /system/su.d /system/etc/install-recovery.sh /system/etc/init.d/99SuperSUDaemon /cache/install-recovery.sh \
+    /system/.supersu /cache/.supersu /data/.supersu \
+    /system/app/Superuser.apk /system/app/SuperSU /cache/Superuser.apk  2>/dev/null
+  fi
+}
+
+api_level_arch_detect() {
+  API=`grep_prop ro.build.version.sdk`
+  ABI=`grep_prop ro.product.cpu.abi | cut -c-3`
+  ABI2=`grep_prop ro.product.cpu.abi2 | cut -c-3`
+  ABILONG=`grep_prop ro.product.cpu.abi`
+
+  ARCH=arm
+  IS64BIT=false
+  if [ "$ABI" = "x86" ]; then ARCH=x86; fi;
+  if [ "$ABI2" = "x86" ]; then ARCH=x86; fi;
+  if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; IS64BIT=true; fi;
+  if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; IS64BIT=true; fi;
+}
+
+boot_actions() {
+  if [ ! -d /dev/magisk/mirror/bin ]; then
+    mkdir -p /dev/magisk/mirror/bin
+    mount -o bind $MAGISKBIN /dev/magisk/mirror/bin
+  fi
+  MAGISKBIN=/dev/magisk/mirror/bin
+}
+
+recovery_actions() {
+  # TWRP bug fix
+  mount -o bind /dev/urandom /dev/random
+  # Preserve environment varibles
+  OLD_PATH=$PATH
+  OLD_LD_PATH=$LD_LIBRARY_PATH
+  if [ ! -d $TMPDIR/bin ]; then
+    # Add busybox to PATH
+    mkdir -p $TMPDIR/bin
+    ln -s $MAGISKBIN/busybox $TMPDIR/bin/busybox
+    $MAGISKBIN/busybox --install -s $TMPDIR/bin
+    export PATH=$TMPDIR/bin:$PATH
+  fi
+  # Temporarily block out all custom recovery binaries/libs
+  mv /sbin /sbin_tmp
+  # Add all possible library paths
+  $IS64BIT && export LD_LIBRARY_PATH=/system/lib64:/system/vendor/lib64 || export LD_LIBRARY_PATH=/system/lib:/system/vendor/lib
+}
+
+recovery_cleanup() {
+  mv /sbin_tmp /sbin 2>/dev/null
+  export LD_LIBRARY_PATH=$OLD_LD_PATH
+  [ -z $OLD_PATH ] || export PATH=$OLD_PATH
+  ui_print "- Unmounting partitions"
+  umount -l /system_root 2>/dev/null
+  umount -l /system 2>/dev/null
+  umount -l /vendor 2>/dev/null
+  umount -l /dev/random 2>/dev/null
+}
+
+abort() {
+  ui_print "$1"
+  $BOOTMODE || recovery_cleanup
+  exit 1
+}
+
+set_perm() {
+  chown $2:$3 $1 || exit 1
+  chmod $4 $1 || exit 1
+  [ -z $5 ] && chcon 'u:object_r:system_file:s0' $1 || chcon $5 $1
+}
+
+set_perm_recursive() {
+  find $1 -type d 2>/dev/null | while read dir; do
+    set_perm $dir $2 $3 $4 $6
+  done
+  find $1 -type f -o -type l 2>/dev/null | while read file; do
+    set_perm $file $2 $3 $5 $6
+  done
+}
+
+mktouch() {
+  mkdir -p ${1%/*} 2>/dev/null
+  [ -z $2 ] && touch $1 || echo $2 > $1
+  chmod 644 $1
+}
+
+request_size_check() {
+  reqSizeM=`du -s $1 | cut -f1`
+  reqSizeM=$((reqSizeM / 1024 + 1))
+}
+
+request_zip_size_check() {
+  reqSizeM=`unzip -l "$1" | tail -n 1 | awk '{ print int($1 / 1048567 + 1) }'`
+}
+
+image_size_check() {
+  SIZE="`$MAGISKBIN/magisk --imgsize $IMG`"
+  curUsedM=`echo "$SIZE" | cut -d" " -f1`
+  curSizeM=`echo "$SIZE" | cut -d" " -f2`
+  curFreeM=$((curSizeM - curUsedM))
+}
+