Commit Graph

548 Commits

Author SHA1 Message Date
topjohnwu
736729f5ef Maintain a list of pre-init mounts
Keep track of everything to unmount
2019-07-16 23:54:52 -07:00
topjohnwu
aa47966347 Fix raw_data move constructor 2019-07-16 23:30:54 -07:00
topjohnwu
7ba8202af5 Introduce new root overlay system 2019-07-16 01:08:28 -07:00
topjohnwu
d7b691cf59 Move libutil internal headers out of include path 2019-07-14 23:55:52 -07:00
osm0sis
7058d5e4cd magiskpolicy: rules: fix writing to loop devices using upstream sepolicy 2019-07-14 22:09:26 -07:00
topjohnwu
52fd508fea Do not use std::random_device
Directly read from urandom instead of using std::random_device.
libc++ will use iostream under-the-hood, which brings significant
binary size increase that is not welcomed, especially in magiskinit.
2019-07-14 21:56:21 -07:00
topjohnwu
41045b62dc Introduce more randomness
- Use C++ random generator instead of old and broken rand()
- Randomize string length to piss off stupid detectors
2019-07-14 17:42:49 -07:00
topjohnwu
4c8f357978 Update to support updated FrankeNDK 2019-07-07 17:38:57 -07:00
osm0sis
33c9f74508 magiskpolicy: rules: fix rootfs operations with SAR Magisk
- while many newer devices cannot allow / (system partition) to be mounted rw due to compressed fs (e.g. erofs) or logical partitions, it should remain possible to alter rootfs files/directories on those that previously allowed it
2019-07-07 12:33:20 -07:00
topjohnwu
51ff724691 Unblock all signals in root shell process
Fix #1563
2019-07-07 12:30:57 -07:00
topjohnwu
291bf93f9d Proper timing 2019-07-07 12:20:47 -07:00
topjohnwu
5fcd629f16 Rearrange su daemon routine 2019-07-07 12:20:19 -07:00
topjohnwu
ab90901793 Use C++ smart pointer for caching su_info 2019-07-07 00:31:49 -07:00
topjohnwu
7233285437 Use relative symbolic links 2019-07-04 17:58:46 -07:00
topjohnwu
a92e039363 Split util headers 2019-07-01 22:58:19 -07:00
topjohnwu
33aa4ca4b7 Move libmincrypt into separate repo 2019-06-30 19:53:03 -07:00
topjohnwu
05658cafc7 Fix typo causing sbin clone failure 2019-06-30 19:24:14 -07:00
topjohnwu
ff3710de66 Minor code changes across all sources 2019-06-30 19:09:31 -07:00
topjohnwu
db8dd9f186 Init code rearrangement 2019-06-30 11:39:13 -07:00
topjohnwu
e8b73ba6d1 Add separate product partition support 2019-06-29 14:19:10 -07:00
topjohnwu
f1112fdf37 Logical Resizable Android Partitions support
The way how logical partition, or "Logical Resizable Android Partitions"
as they say in AOSP source code, is setup makes it impossible to early
mount the partitions from the shared super partition with just
a few lines of code; in fact, AOSP has a whole "fs_mgr" folder which
consist of multiple complex libraries, with 15K lines of code just
to deal with the device mapper shenanigans.

In order to keep the already overly complicated MagiskInit more
managable, I chose NOT to go the route of including fs_mgr directly
into MagiskInit. Luckily, starting from Android Q, Google decided to
split init startup into 3 stages, with the first stage doing _only_
early mount. This is great news, because we can simply let the stock
init do its own thing for us, and we intercept the bootup sequence.

So the workflow can be visualized roughly below:

Magisk First Stage --> First Stage Mount --> Magisk Second Stage --+
   (MagiskInit)         (Original Init)         (MagiskInit)       +
                                                                   +
                                                                   +
     ...Rest of the boot... <-- Second Stage <-- Selinux Setup  <--+
      (__________________ Original Init ____________________)

The catch here is that after doing all the first stage mounting, /init
will pivot /system as root directory (/), leaving us impossible to
regain control after we hand it over. So the solution here is to patch
fstab in /first_stage_ramdisk on-the-fly to redirect /system to
/system_root, making the original init do all the hard work for
us and mount required early mount partitions, but skips the step of
switching root directory. It will also conveniently hand over execution
back to MagiskInit, which we will reuse the routine for patching
root directory in normal system-as-root situations.
2019-06-29 01:25:54 -07:00
osm0sis
a48c4f9e05 magiskboot: don't clobber /overlay with cpio restore anymore
- Magisk "dirty" flashes would remove the /overlay directory which might have been put there by a custom kernel or other mod
- this is a leftover from when Magisk itself used /overlay for placing init.magisk.rc, so just remove this file specifically and leave the rest intact
2019-06-27 18:59:54 -04:00
topjohnwu
b0e49a4cc8 Kill blastula pool when magiskhide init 2019-06-27 00:49:27 -07:00
topjohnwu
1e94517a72 MagiskHide is coming back strong 2019-06-27 00:28:34 -07:00
topjohnwu
98f60216ac Temporary disable MagiskHide by default
Latest Android Q beta does not like when zygote is ptraced on
boot. Disable it for now until further investigation.
2019-06-25 23:32:07 -07:00
topjohnwu
e29b712108 Start Magisk in SAR 2019-06-25 23:31:59 -07:00
topjohnwu
a462435f2f Load custom sepolicy 2019-06-25 21:34:02 -07:00
topjohnwu
911b8273fe Fix typo in sbin clone 2019-06-25 03:35:25 -07:00
topjohnwu
09935e591a Proper SARInit test 2019-06-25 03:34:54 -07:00
topjohnwu
4a212dba35 Early mount partitions in SAR 2019-06-25 02:47:16 -07:00
topjohnwu
aac9e85e04 More Q cleanup 2019-06-25 02:38:34 -07:00
topjohnwu
bb67a837d3 Adjust class structures 2019-06-24 01:50:47 -07:00
topjohnwu
6cde695194 Remove Q dirty hacks in SARCompat 2019-06-24 01:31:42 -07:00
topjohnwu
a1a1ac0bbb Add sbin overlay to system-as-root 2019-06-24 01:21:33 -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
28cd6a75e7 Add missing functions in bionic 2019-06-23 14:54:48 -07:00
topjohnwu
4cc7aced15 Add new util function 2019-06-23 03:53:41 -07:00
topjohnwu
1058aeb04f Label current SAR impl as compat
The current system-as-root magiskinit implementation (converting
root directory in system partition to legacy rootfs setup) is now
considered as backwards compatible only.

The new implementation that is hide and Android Q friendly is coming soon.
2019-06-22 03:18:45 -07:00
topjohnwu
cfec0db947 Delay mounting sbin overlay 2019-06-22 03:14:33 -07:00
topjohnwu
5c7f69acaa Separate SAR and legacy implementation 2019-06-16 12:45:32 -07:00
topjohnwu
f1d9015e5f Move load kernel info out of class 2019-06-15 22:25:09 -07:00
topjohnwu
e8d900c58e Fix typo 2019-06-15 18:12:12 -07:00
topjohnwu
a6241ae912 Fix magiskboot unpack option parsing 2019-06-15 16:15:12 -07:00
osm0sis
ee407472cf magiskboot: allow forcing no recompression on ramdisk.cpio
- when input image had a compressed ramdisk magiskboot had no way to force the repack with the uncompressed ramdisk.cpio since it does not formally recognize cpio as its own format, so add a switch to support forcing repacking to any possible ramdisk format regardless of input image
2019-06-10 21:57:39 -07:00
osm0sis
f341f3b2dd magiskboot: accept forcing recognized but unsupported format compression
- when input image had a different supported format (e.g. gzip) magiskboot would not accept a manually compressed ramdisk or kernel in an unsupported format (e.g. lzop) despite being able to recognize it, so instead would double compress using whatever the input format was, breaking the image with, in effect, a ramdisk.cpio.lzo.gz
2019-06-10 21:56:51 -07:00
Ian Macdonald
8513946e09 'magiskboot hexpatch' will exit with status 1 when nothing patched. 2019-06-10 21:41:40 -07:00
nonnymoose
8ebd9c8927 Use original file type when creating device nodes 2019-06-10 21:41:17 -07:00
topjohnwu
c1602d2554 Support execute commands in magiskhide env
Credits to #1454
2019-06-04 22:27:19 -07:00
topjohnwu
9f8d4e1022 Properly isolate mount namespace 2019-06-04 21:21:27 -07:00
topjohnwu
4fcdcd9a8a Detect UID from data directories 2019-06-03 23:32:49 -07:00