ACPR/android_system_core
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Allow other processes to run snapshotctl through init.

Browse source 
Running snapshotctl involves talking to gsid, which requires the UID to
be 0. To allow other processes to run snapshotctl without running as the
root user, this change adds system properties "sys.snapshotctl.map" and
"sys.snapshotctl.unmap" that proxy snapshotctl calls.

Bug: 311377497
Test: adb shell setprop sys.snapshotctl.map requested
Test: adb shell setprop sys.snapshotctl.unmap requested
Change-Id: Ia29dde30021a94511b8e699c2c8f3816b851bf5c
This commit is contained in:
Jiakai Zhang 2024-03-08 18:49:41 +00:00
parent b2bfb972e8
commit 22ddb0aec5
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
rootdir/init.rc
View file

@ -1361,3 +1361,16 @@ on property:persist.device_config.mglru_native.lru_gen_config=core_and_nonleaf_y
write /sys/kernel/mm/lru_gen/enabled 5
on property:persist.device_config.mglru_native.lru_gen_config=all
write /sys/kernel/mm/lru_gen/enabled 7
# Allow other processes to run `snapshotctl` through `init`. This requires
# `set_prop` permission on `snapshotctl_prop`.
on property:sys.snapshotctl.map=requested
# "root" is needed to talk to gsid and pass its check on uid.
# "system" is needed to write to "/dev/socket/snapuserd" to talk to
# snapuserd.
exec - root root system -- /system/bin/snapshotctl map
setprop sys.snapshotctl.map "finished"
on property:sys.snapshotctl.unmap=requested
exec - root root system -- /system/bin/snapshotctl unmap
setprop sys.snapshotctl.unmap "finished"