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Fix aocx selinux dumpstate permissions

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After switching aocxd to stable AIDL, we encountered some permissions
issues associated with dumpstate:

dumpstate: type=1400 audit(0.0:548): avc:  denied  { call } for  scontext=u:r:dumpstate:s0 tcontext=u:r:aocxd:s0 tclass=binder permissive=0

dumpstate: type=1400 audit(0.0:17): avc:  denied  { use } for  path="pipe:[214567]" dev="pipefs" ino=214567 scontext=u:r:aocxd:s0 tcontext=u:r:dumpstate:s0 tclass=fd permissive=0

dumpstate: type=1400 audit(0.0:15): avc:  denied  { write } for  path="pipe:[212933]" dev="pipefs" ino=212933 scontext=u:r:aocxd:s0 tcontext=u:r:dumpstate:s0 tclass=fifo_file permissive=0

TEST:
make selinux_policy -j128
adb push $ANDROID_PRODUCT_OUT/vendor/etc/selinux/* /vendor/etc/selinux
adb reboot
adb root
adb bugreport

BUG: 347156752
Change-Id: I188263ee9b186736a48fd3a0cfa83745e2e54108
This commit is contained in:
Bruce Po
2024-06-14 15:26:53 -07:00
parent 094c853eac
commit e15af041dd
2 changed files with 5 additions and 0 deletions
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3
aoc/sepolicy/aocxd.te
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@@ -26,3 +26,6 @@ add_service(aocxd, aocx);
# allow managing thread priority
allow aocxd self:global_capability_class_set sys_nice;
allow aocxd dumpstate:fd use;
allow aocxd dumpstate:fifo_file write;

2
aoc/sepolicy/dumpstate.te Normal file
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@@ -0,0 +1,2 @@
# Allow dumpstate to talk to aocxd over binder
binder_call(dumpstate, aocxd)