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Remove requirement to use early-init daemon

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We used to construct /sbin tmpfs overlay in early-init stage after
SELinux is properly initialized. However the way it is implemented
(forking daemon from magiskinit with complicated file waiting triggers)
is extremely complicated and error prone.

This commit moves the construction of the sbin overlay to pre-init
stage. The catch is that since SELinux is not present at that point,
proper selabel has to be reconstructed afterwards. Some additional
SEPolicy rules are added to make sure init can access magisk binaries,
and the secontext relabeling task is assigned to the main Magisk daemon.
This commit is contained in:
topjohnwu
2019-04-24 00:13:48 -04:00
parent 515f346dcc
commit 003e44fb84
8 changed files with 110 additions and 117 deletions
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2
native/jni/include/magisk.h
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@ -6,8 +6,6 @@
#define JAVA_PACKAGE_NAME "com.topjohnwu.magisk"
#define LOGFILE "/cache/magisk.log"
#define UNBLOCKFILE "/dev/.magisk_unblock"
#define EARLYINIT "/dev/.magisk_early_init"
#define EARLYINITDONE "/dev/.magisk_early_init_done"
#define DISABLEFILE "/cache/.disable_magisk"
#define MAGISKTMP "/sbin/.magisk"
#define MIRRDIR MAGISKTMP "/mirror"