PWN-Hunter/android_system_sepolicy
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Allow update_verifier to reboot the device

Browse Source 
Currently update_verifier only verifies the blocks when dm-verity is in
'enforcing' mode; and dm-verity will reboot the device upon detection of
errors. However, sometimes the verity mode is not guaranteed to be
correct. When mode is 'eio' for example, dm-verity will not trigger
a reboot but rather fail the read. So update_verifier need to take the
responsibility to reboot the device. Otherwise the device will continue
to boot without setting the flag "isSlotMarkedSuccessful".

Denial message:
update_verifier: type=1400 audit(0.0:18): avc: denied { write } for
name="property_service" dev="tmpfs" ino=14678 scontext=u:r:update_verifier:s0
tcontext=u:object_r:property_socket:s0 tclass=sock_file permissive=0

Bug: 36260064
Test: powerctl property sets successfully
Change-Id: I7431f87e2d61be1425397732aebb369d4ad4c26c
This commit is contained in:
Tianjie Xu 2017-04-03 20:08:37 -07:00
parent cb6f8f0277
commit 1a60998ac0
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
public/update_verifier.te
View File

@ -12,5 +12,8 @@ allow update_verifier ota_package_file:file r_file_perms;
# Read all blocks in dm wrapped system partition.
allow update_verifier dm_device:blk_file r_file_perms;
# Allow update_verifier to reboot the device.
set_prop(update_verifier, powerctl_prop)
# Use Boot Control HAL
hal_client_domain(update_verifier, hal_bootctl)