TheArchive/Magisk
1
0
Fork 0
mirror of https://github.com/topjohnwu/Magisk.git synced 2024-11-30 13:35:27 +00:00
Code Issues Packages Projects Releases Wiki Activity
b4fe4f3d10
Magisk/scripts/magic_mask.sh
topjohnwu b4fe4f3d10 Rename sepolicy-inject
2017-03-18 17:26:30 +08:00

531 lines
15 KiB
Bash
Raw Blame History

#!/system/bin/sh
LOGFILE=/cache/magisk.log
DISABLEFILE=/cache/.disable_magisk
UNINSTALLER=/cache/magisk_uninstaller.sh
IMG=/data/magisk.img
WHITELIST="/system/bin"
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=/dev/busybox
BINPATH=/data/magisk
OLDPATH=$PATH
export PATH=$TOOLPATH:$OLDPATH
APPDIR=/data/data/com.topjohnwu.magisk/files
# 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
}
in_list() {
for i in $2; do
[ "$1" = "$i" ] && return 0
done
return 1
}
unblock() {
touch /dev/.magisk.unblock
chcon u:object_r:device:s0 /dev/.magisk.unblock
exit
}
bind_mount() {
if [ -e "$1" -a -e "$2" ]; then
mount -o bind "$1" "$2" || log_print "Mount Fail: $1 -> $2"
fi
}
loopsetup() {
LOOPDEVICE=
for DEV in `ls /dev/block/loop*`; do
if losetup $DEV $1; then
LOOPDEVICE=$DEV
break
fi
done
}
image_size_check() {
e2fsck -yf $1
curBlocks=`e2fsck -n $1 2>/dev/null | cut -d, -f3 | cut -d\ -f2`;
curUsedM=`echo "$curBlocks" | cut -d/ -f1`
curSizeM=`echo "$curBlocks" | cut -d/ -f1`
curFreeM=$(((curSizeM - curUsedM) * 4 / 1024))
curUsedM=$((curUsedM * 4 / 1024 + 1))
curSizeM=$((curSizeM * 4 / 1024))
}
run_scripts() {
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
for SCRIPT in $COREDIR/${1}.d/* ; do
if [ -f "$SCRIPT" ]; then
chmod 755 $SCRIPT
chcon u:object_r:system_file:s0 $SCRIPT
log_print "${1}.d: $SCRIPT"
sh $SCRIPT
fi
done
}
travel() {
cd "$TRAVEL_ROOT/$1"
if [ -f .replace ]; then
log_print "Replace: /$1"
rm -rf "$MOUNTINFO/$1"
mktouch "$MOUNTINFO/$1" "$TRAVEL_ROOT"
else
for ITEM in * ; do
# This means it's an empty folder (shouldn't happen, but better to be safe)
[ "$ITEM" = "*" ] && return
# Ignore /system/vendor since we will handle it differently
[ "$1" = "system" -a "$ITEM" = "vendor" ] && continue
# Target not found or target/file is a symlink
if [ ! -e "/$1/$ITEM" -o -L "/$1/$ITEM" -o -L "$ITEM" ]; then
# If we are in a higher level, delete the lower levels
rm -rf "$MOUNTINFO/dummy/$1" 2>/dev/null
# Mount the dummy parent
log_print "Replace with dummy: /$1"
mktouch "$MOUNTINFO/dummy/$1"
if [ -L "$ITEM" ]; then
# Copy symlinks
log_print "Symlink: /$1/$ITEM"
mkdir -p "$DUMMDIR/$1" 2>/dev/null
cp -afc "$ITEM" $"DUMMDIR/$1/$ITEM"
elif [ -d "$ITEM" ]; then
# Create new dummy directory and mount it
log_print "New directory: /$1/$ITEM"
mkdir -p "$DUMMDIR/$1/$ITEM"
mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
else
# Create new dummy file and mount it
log_print "New file: /$1/$ITEM"
mktouch "$DUMMDIR/$1/$ITEM"
mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
fi
else
if [ -d "$ITEM" ]; then
# It's an directory, travel deeper
(travel "$1/$ITEM")
elif [ ! -L "$ITEM" ]; then
# Mount this file
log_print "Replace: /$1/$ITEM"
mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
fi
fi
done
fi
}
clone_dummy() {
LINK=false
in_list "$1" "$WHITELIST" && LINK=true
for ITEM in $MIRRDIR$1/* ; do
REAL="${ITEM#$MIRRDIR}"
if [ -d "$MOUNTINFO$REAL" ]; then
# Need to clone deeper
mkdir -p "$DUMMDIR$REAL"
(clone_dummy "$REAL")
elif [ ! -f "$DUMMDIR$REAL" ]; then
# It's not the file to be added/replaced, clone it
if [ -L "$ITEM" ]; then
# Copy original symlink
cp -afc "$ITEM" "$DUMMDIR$REAL"
else
if $LINK && [ ! -e "$MOUNTINFO$REAL" ]; then
ln -s "$MIRRDIR$REAL" "$DUMMDIR$REAL"
else
if [ -d "$ITEM" ]; then
mkdir -p "$DUMMDIR$REAL"
else
mktouch "$DUMMDIR$REAL"
fi
if [ ! -e "$MOUNTINFO$REAL" ]; then
log_print "Clone skeleton: $REAL"
mktouch "$MOUNTINFO/mirror$REAL"
fi
fi
fi
fi
done
}
merge_image() {
if [ -f $1 ]; then
log_print "$1 found"
if [ -f $IMG ]; then
log_print "$IMG found, attempt to merge"
# Handle large images
image_size_check $1
mergeUsedM=$curUsedM
image_size_check $IMG
if [ "$mergeUsedM" -gt "$curFreeM" ]; then
NEWDATASIZE=$(((mergeUsedM + curUsedM) / 32 * 32 + 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 -a ! -z $LOOPMERGE ]; then
# if loop devices have been setup, mount images
OK=false
mount -t ext4 -o rw,noatime $LOOPDATA /cache/data_img && \
mount -t ext4 -o rw,noatime $LOOPMERGE /cache/merge_img && \
OK=true
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
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 legacy stuffs...
rm -rf /cache/magisk /cache/magisk_merge /cache/magiskhide.log
[ -f $DISABLEFILE -o -f $UNINSTALLER ] && unblock
if [ -d /cache/magisk_mount ]; then
log_print "* Mounting cache files"
find /cache/magisk_mount -type f 2>/dev/null | while read ITEM ; do
chmod 644 "$ITEM"
chcon u:object_r:system_file:s0 "$ITEM"
TARGET="${ITEM#/cache/magisk_mount}"
bind_mount "$ITEM" "$TARGET"
done
fi
unblock
;;
post-fs-data )
# /data not mounted yet
! mount | grep " /data " >/dev/null && unblock
mount | grep " /data " | grep "tmpfs" >/dev/null && unblock
# Don't run twice
if [ "`getprop magisk.restart_pfsd`" != "1" ]; then
log_print "** Magisk post-fs-data mode running..."
# Cache support
mv /cache/stock_boot* /data 2>/dev/null
if [ -d /cache/data_bin ]; then
rm -rf $BINPATH
mv /cache/data_bin $BINPATH
fi
chmod -R 755 $BINPATH
chown -R 0.0 $BINPATH
# Live patch sepolicy
$BINPATH/magiskpolicy --live
if [ -f $UNINSTALLER ]; then
touch /dev/.magisk.unblock
chcon u:object_r:device:s0 /dev/.magisk.unblock
sh $UNINSTALLER
exit
fi
# Set up environment
mkdir -p $TOOLPATH
$BINPATH/busybox --install -s $TOOLPATH
ln -s $BINPATH/busybox $TOOLPATH/busybox
# Prevent issues
rm -f $TOOLPATH/su $TOOLPATH/sh $TOOLPATH/reboot
chmod -R 755 $TOOLPATH
chown -R 0.0 $TOOLPATH
find $BINPATH $TOOLPATH -exec chcon -h u:object_r:system_file:s0 {} \;
# Multirom functions should go here, not available right now
MULTIROM=false
# 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 ! mount | grep $MOUNTPOINT; then
loopsetup $IMG
[ ! -z $LOOPDEVICE ] && mount -t ext4 -o rw,noatime $LOOPDEVICE $MOUNTPOINT
if [ $? -ne 0 ]; then
log_print "magisk.img mount failed, nothing to do :("
unblock
fi
fi
# Remove empty directories, legacy paths, symlinks, old temporary images
find $MOUNTPOINT -type d -depth ! -path "*core*" -exec rmdir {} \; 2>/dev/null
rm -rf $MOUNTPOINT/zzsupersu $MOUNTPOINT/phh $COREDIR/bin $COREDIR/dummy $COREDIR/mirror \
$COREDIR/busybox /data/magisk/*.img /data/busybox 2>/dev/null
# Remove modules that are labeled to be removed
for MOD in $MOUNTPOINT/* ; do
rm -f $MOD/system/placeholder 2>/dev/null
if [ -f $MOD/remove ]; then
log_print "Remove module: $MOD"
rm -rf $MOD
fi
done
# Unmount, shrink, remount
if umount $MOUNTPOINT; then
losetup -d $LOOPDEVICE 2>/dev/null
image_size_check $IMG
NEWDATASIZE=$((curUsedM / 32 * 32 + 32))
if [ "$curSizeM" -gt "$NEWDATASIZE" ]; then
log_print "Shrinking $IMG to ${NEWDATASIZE}M..."
resize2fs $IMG ${NEWDATASIZE}M
fi
loopsetup $IMG
[ ! -z $LOOPDEVICE ] && mount -t ext4 -o rw,noatime $LOOPDEVICE $MOUNTPOINT
if [ $? -ne 0 ]; then
log_print "magisk.img mount failed, nothing to do :("
unblock
fi
fi
# Start MagiskSU if no SuperSU
export PATH=$OLDPATH
[ ! -f /sbin/launch_daemonsu.sh ] && sh $COREDIR/su/magisksu.sh
export PATH=$TOOLPATH:$OLDPATH
[ -f $DISABLEFILE ] && unblock
log_print "* Preparing modules"
# Remove crap folder
rm -rf $MOUNTPOINT/lost+found
# Link vendor if not exist
if [ ! -e /vendor ]; then
mount -o rw,remount rootfs /
ln -s /system/vendor /vendor
mount -o ro,remount rootfs /
fi
for MOD in $MOUNTPOINT/* ; do
if [ ! -f $MOD/disable ]; then
# Travel through all mods
if [ -f $MOD/auto_mount -a -d $MOD/system ]; then
log_print "Analyzing module: $MOD"
TRAVEL_ROOT=$MOD
(travel system)
rm -f $MOD/vendor 2>/dev/null
if [ -d $MOD/system/vendor ]; then
ln -s $MOD/system/vendor $MOD/vendor
(travel vendor)
fi
fi
# Read in defined system props
if [ -f $MOD/system.prop ]; then
log_print "* Reading props from $MOD/system.prop"
$BINPATH/resetprop --file $MOD/system.prop
fi
fi
done
# Proper permissions for generated items
find $TMPDIR -exec chcon -h u:object_r:system_file:s0 {} \;
# linker(64), t*box required for bin
if [ -f $MOUNTINFO/dummy/system/bin ]; then
cp -afc /system/bin/linker* /system/bin/t*box $DUMMDIR/system/bin/
fi
# Start doing tasks
# Stage 1
log_print "* Stage 1: Mount system and vendor mirrors"
SYSTEMBLOCK=`mount | grep " /system " | awk '{print $1}'`
mkdir -p $MIRRDIR/system
mount -o ro $SYSTEMBLOCK $MIRRDIR/system
if [ `mount | grep -c " /vendor "` -ne 0 ]; then
VENDORBLOCK=`mount | grep " /vendor " | awk '{print $1}'`
mkdir -p $MIRRDIR/vendor
mount -o ro $VENDORBLOCK $MIRRDIR/vendor
else
ln -s $MIRRDIR/system/vendor $MIRRDIR/vendor
fi
# Since mirrors always exist, we load libraries and binaries from mirrors
export LD_LIBRARY_PATH=$MIRRDIR/system/lib:$MIRRDIR/vendor/lib
[ -d $MIRRDIR/system/lib64 ] && export LD_LIBRARY_PATH=$MIRRDIR/system/lib64:$MIRRDIR/vendor/lib64
# Stage 2
log_print "* Stage 2: Mount dummy skeletons"
# Move /system/vendor to /vendor for consistency
mv -f $MOUNTINFO/dummy/system/vendor $MOUNTINFO/dummy/vendor 2>/dev/null
mv -f $DUMMDIR/system/vendor $DUMMDIR/vendor 2>/dev/null
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
# Check if the dummy /system/bin is empty, it shouldn't
[ -e $DUMMDIR/system/bin -a ! -e $DUMMDIR/system/bin/sh ] && clone_dummy /system/bin
# Stage 3
log_print "* Stage 3: Mount module items"
find $MOUNTINFO/system $MOUNTINFO/vendor -type f 2>/dev/null | while read ITEM ; do
TARGET="${ITEM#$MOUNTINFO}"
ORIG="`cat "$ITEM"`$TARGET"
bind_mount "$ORIG" "$TARGET"
done
# Stage 4
log_print "* Stage 4: Execute scripts"
run_scripts post-fs-data
# Stage 5
log_print "* Stage 5: Mount mirrored items back to dummy"
find $MOUNTINFO/mirror -type f 2>/dev/null | while read ITEM ; do
TARGET="${ITEM#$MOUNTINFO/mirror}"
ORIG="$MIRRDIR$TARGET"
bind_mount "$ORIG" "$TARGET"
done
# 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
if [ -f /data/magisk/magisk.apk ]; then
if [ -z `ls /data/app | grep com.topjohnwu.magisk` ]; then
mkdir /data/app/com.topjohnwu.magisk-1
cp /data/magisk/magisk.apk /data/app/com.topjohnwu.magisk-1/base.apk
chown 1000.1000 /data/app/com.topjohnwu.magisk-1
chown 1000.1000 /data/app/com.topjohnwu.magisk-1/base.apk
chmod 755 /data/app/com.topjohnwu.magisk-1
chmod 644 /data/app/com.topjohnwu.magisk-1/base.apk
chcon u:object_r:apk_data_file:s0 /data/app/com.topjohnwu.magisk-1
chcon u:object_r:apk_data_file:s0 /data/app/com.topjohnwu.magisk-1/base.apk
fi
rm -f /data/magisk/magisk.apk 2>/dev/null
fi
# Expose busybox
[ "`getprop persist.magisk.busybox`" = "1" ] && sh /sbin/magic_mask.sh mount_busybox
# Restart post-fs-data if necessary (multirom)
$MULTIROM && setprop magisk.restart_pfsd 1
fi
unblock
;;
mount_busybox )
log_print "* Enabling BusyBox"
cp -afc /system/xbin/. $TOOLPATH
umount /system/xbin 2>/dev/null
bind_mount $TOOLPATH /system/xbin
;;
service )
# Version info
MAGISK_VERSION_STUB
log_print "** Magisk late_start service mode running..."
if [ -f $DISABLEFILE ]; then
setprop ro.magisk.disable 1
exit
fi
run_scripts service
# Start MagiskHide
[ "`getprop persist.magisk.hide`" = "1" ] && sh $COREDIR/magiskhide/enable
;;
esac
Reference in New Issue View Git Blame Copy Permalink