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Remove usage of magisk.img

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Mounting ext4 images causes tons of issues, such as unmountable with broken F2FS drivers.
Resizing is also very complicated and does not work properly on all devices.
Each step in either measuring free space, resizing, and shrinking the image is a
point of failure, and either step's failure could cause the module system completely broken.

The new method is to directly store modules into /data/adb/modules, and for module installation
on boot /data/adb/modules_update. Several compatibility layers has been done: the new path is
bind mounted to the old path (/sbin/.magisk/img), and the helper functions in util_functions.sh
will now transparently make existing modules install to the new location without any changes.

MagiskHide is also updated to unmount module files stored in this new location.
This commit is contained in:
topjohnwu
2019-02-12 02:14:57 -05:00
parent cfa28f0c4a
commit 1321f097b8
6 changed files with 84 additions and 125 deletions
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8
native/jni/include/magisk.h
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@@ -18,16 +18,18 @@
#define BLOCKDIR MAGISKTMP "/block"
#define MIRRDIR MAGISKTMP "/mirror"
#define BBPATH MAGISKTMP "/busybox"
#define MOUNTPOINT MAGISKTMP "/img"
#define LEGACY_CORE MOUNTPOINT "/.core"
#define SECURE_DIR "/data/adb"
#define MAINIMG SECURE_DIR "/magisk.img"
#define MODULEROOT SECURE_DIR "/modules"
#define MODULEUPGRADE SECURE_DIR "/modules_update"
#define DATABIN SECURE_DIR "/magisk"
#define MAGISKDB SECURE_DIR "/magisk.db"
#define SIMPLEMOUNT SECURE_DIR "/magisk_simple"
#define BOOTCOUNT SECURE_DIR "/.boot_count"
#define MANAGERAPK DATABIN "/magisk.apk"
// Legacy crap
#define LEGACYCORE MODULEROOT "/.core"
// selinux consts
#define SELINUX_PATH "/sys/fs/selinux"
#define SELINUX_ENFORCE SELINUX_PATH "/enforce"