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Magisk
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71 Commits

Author SHA1 Message Date
topjohnwu 5b37de8fe5 Build our own zlib 2021-05-10 18:46:03 -07:00
topjohnwu 5a71998b4e Stop embedding magisk in magiskinit 2021-01-18 04:25:26 -08:00
topjohnwu e8ba671fc2 Guard all injection features behind a global flag 2021-01-13 20:07:23 -08:00
topjohnwu 540b4b7ea9 Update pre/post hooks implementation 2021-01-09 17:41:25 -08:00
topjohnwu 9ed110c91b Add JNI hooks to critical methods 2021-01-08 05:25:44 -08:00
topjohnwu a30d510eb1 Use xHook to hook functions in PLT 2021-01-08 00:53:24 -08:00
topjohnwu 4060c2107c Add preliminary zygote code injection support 
Prototyping the injection setup and a clean "self unloading" mechanism.
 2021-01-06 22:21:17 -08:00
topjohnwu 18b86e4fd2 Update Android.mk for test binary 
Make Android Studio happy
 2021-01-05 00:01:02 -08:00
topjohnwu 4e97b18977 Move libsystemproperties to external 2020-12-31 15:06:19 -08:00
topjohnwu f9bde347bc Convert indentation to spaces 
The tab war is lost
 2020-12-30 22:11:24 -08:00
topjohnwu 966e23b846 magiskinit code tidy-up 2020-10-26 20:46:15 -07:00
topjohnwu 4fd04e62af Remove compressed ramdisk support 
It is causing more issues than it addresses
 2020-09-24 02:49:09 -07:00
topjohnwu f392ade78d Rewrite sepolicy.c in C++ 2020-05-23 00:18:25 -07:00
topjohnwu 87de0e7a0e Force remove AVB for 2SI since it may bootloop some devices 2020-05-05 03:29:36 -07:00
topjohnwu a73e7e9f99 Introduce new module mount implementation 
Rewrite the whole module mounting logic from scratch.
Even the algorithm is different compared to the old one.

This new design focuses on a few key points:
- Modular: Custom nodes can be injected into the mount tree.
  It's the main reason for starting the rewrite (needed for Android 11)
- Efficient: Compared to the existing implementation, this is the most
  efficient (both in terms of computation and memory usage) design I
  currently can come up with.
- Accurate: The old mounting logic relies on handling specifically every
  edge case I can think of. During this rewrite I actually found some
  cases that the old design does not handle properly. This new design is
  architected in a way (node types and its rankings) that it should
  handle edge cases all by itself when constructing mount trees.
 2020-04-18 02:00:48 -07:00
topjohnwu e0a281583d Preparation for dynamic tmpfs path 2020-04-12 05:34:56 -07:00
topjohnwu d739dcac2b Remove dependency on magisk.hpp in libutils 2020-04-11 04:40:40 -07:00
topjohnwu 4066e5bf14 Update Makefiles 2020-04-06 22:45:08 -07:00
topjohnwu 5f1174de27 Introduce new boot flow to handle SAR 2SI 
The existing method for handling legacy SAR is:
1. Mount /sbin tmpfs overlay
2. Dump all patched/new files into /sbin
3. Magic mount root dir and re-exec patched stock init

With Android 11 removing the /sbin folder, it is quite obvious that
things completely break down right in step 1.

To overcome this issue, we have to find a way to swap out the init
binary AFTER we re-exec stock init. This is where 2SI comes to rescue!

2SI normal boot procedure is:
1st stage -> Load sepolicy -> 2nd stage -> boot continue...

2SI Magisk boot procedure is:
MagiskInit 1st stage -> Stock 1st stage -> MagiskInit 2nd Stage ->
-> Stock init load sepolicy -> Stock 2nd stage -> boot continue...

As you can see, the trick is to make stock 1st stage init re-exec back
into MagiskInit so we can do our setup. This is possible by manipulating
some ramdisk files on initramfs based 2SI devices (old ass non SAR
devices AND super modern devices like Pixel 3/4), but not possible
on device that are stuck using legacy SAR (device that are not that
modern but not too old, like Pixel 1/2. Fucking Google logic!!)

This commit introduces a new way to intercept stock init re-exec flow:
ptrace init with forked tracer, monitor PTRACE_EVENT_EXEC, then swap
out the init file with bind mounts right before execv returns!

Going through this flow however will lose some necessary backup files,
so some bookkeeping has to be done by making the tracer hold these
files in memory and act as a daemon. 2nd stage MagiskInit will ack the
daemon to release these files at the correct time.

It just works™  ¯\_(ツ)_/¯
 2020-04-01 04:39:28 -07:00
topjohnwu a0998009c1 Small native code reorganization 2020-03-09 01:50:30 -07:00
topjohnwu b13a35057a Support building standalone resetprop 2020-01-21 00:48:52 +08:00
topjohnwu c3e77b1ec1 Add BusyBox SELinux support 
Close #1523
 2020-01-20 20:48:05 +08:00
topjohnwu b39f407596 Load libsqlite dynamically 2020-01-11 03:20:59 +08:00
topjohnwu 490e6a6f23 Add new API to load sepolicy rule file 2019-12-09 04:14:30 -05:00
topjohnwu 4bb8ad19cf Small init refactoring 2019-12-06 12:02:34 -05:00
topjohnwu 4c8f357978 Update to support updated FrankeNDK 2019-07-07 17:38:57 -07:00
topjohnwu 33aa4ca4b7 Move libmincrypt into separate repo 2019-06-30 19:53:03 -07:00
topjohnwu 9ec8bc2166 Boot MagiskInit as actual system-as-root 
WIP, no customization. DO NOT USE YET!
 2019-06-23 15:14:47 -07:00
topjohnwu 7918fc3528 Support building individual applets 2019-05-30 21:17:58 -07:00
topjohnwu 845d1e02b0 Separate magiskinit components 2019-05-27 00:29:43 -07:00
topjohnwu 8b7b05da68 Separate hide policies 2019-05-26 02:47:57 -07:00
topjohnwu 08a70f033a Add entrypoint to build test 
Just for convenience, nothing special here
 2019-04-01 02:46:09 -04:00
topjohnwu f0240b1f06 Support Android Q new split sepolicy setup 2019-03-15 06:17:37 -04:00
topjohnwu 6ca8db2f0c Welcome to the 64 bit world! 
Close #854
 2019-02-24 08:13:27 -05:00
topjohnwu 0f46493477 Compile magiskboot as static 2019-02-23 17:01:44 -05:00
topjohnwu f7ae72a36c Move CPIO to libutils 2019-02-23 02:42:26 -05:00
topjohnwu 19ee189468 Separate scripting code 2019-02-15 20:45:05 -05:00
Park Ju Hyung 7384d2d330 Completely rework MagiskHide 
Previous MagiskHide detects new app launches via listening through logcat
and filtering launch info messages.

This is extremely inefficient and prone to cause multiple issues both
theoratically and practically.

Rework this by using inotify to detect open() syscalls to target APKs.

This also solves issues related to Zygote-forked caching mechanisms such as
OnePlus OxygenOS' embryo.

Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
 2019-02-12 23:39:57 -05:00
topjohnwu ed4df87b57 Remove imgtool 2019-02-12 02:44:46 -05:00
topjohnwu 3a422c3f15 Remove magisklogd, use threads and BlockingQueue 2019-02-10 01:05:19 -05:00
topjohnwu 4df1047b07 Native project restructuring 2019-01-30 03:35:07 -05:00
topjohnwu 23e5188422 Update scripts 
1. Update build.py to use f-strings
2. Directly append busybox binaries to update-binary
3. Remove b64xz
 2019-01-15 08:32:18 -05:00
topjohnwu 3d269fe8be Migrate MagiskInit to C++ 2018-11-08 04:20:16 -05:00
topjohnwu cda57dd4b4 Fully migrate Magisk to C++ 2018-11-04 04:15:51 -05:00
topjohnwu ef6677f43d Source reorganization 2018-11-03 00:26:04 -04:00
topjohnwu 11c33d4447 Migrate resetprop to C++ 2018-11-02 23:56:15 -04:00
topjohnwu 27c688252d Store hidelist in magisk database 2018-11-01 13:23:12 -04:00
topjohnwu fc8a3c5fb4 Migrate MagiskBoot to C++ 2018-10-24 22:23:14 -04:00
topjohnwu 74aae523ba Properly support boot image header v1 
Close #695
 2018-10-20 00:27:56 -04:00
topjohnwu cce636224c Reorganization 2018-09-27 18:26:41 -04:00