platform_system_sepolicy/public/performanced.te
Marco Ballesio aa4ce95c6f sepolicy: rules for uid/pid cgroups v2 hierarchy
Bug: 168907513
Test: verified the correct working of the v2 uid/pid hierarchy in normal
and recovery modes

This reverts commit aa8bb3a29b.

Change-Id: Ib344d500ea49b86e862e223ab58a16601eebef47
2021-02-11 23:40:38 +00:00

31 lines
1.2 KiB
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# performanced
type performanced, domain, mlstrustedsubject;
type performanced_exec, system_file_type, exec_type, file_type;
# Needed to check for app permissions.
binder_use(performanced)
binder_call(performanced, system_server)
allow performanced permission_service:service_manager find;
pdx_server(performanced, performance_client)
# TODO: use file caps to obtain sys_nice instead of setuid / setgid.
allow performanced self:global_capability_class_set { setuid setgid sys_nice };
# Access /proc to validate we're only affecting threads in the same thread group.
# Performanced also shields unbound kernel threads. It scans every task in the
# root cpu set, but only affects the kernel threads.
r_dir_file(performanced, { appdomain bufferhubd kernel surfaceflinger })
dontaudit performanced domain:dir read;
allow performanced { appdomain bufferhubd kernel surfaceflinger }:process setsched;
# These /proc accesses only show up in permissive mode but they
# generate a lot of noise in the log.
userdebug_or_eng(`
dontaudit performanced domain:dir open;
dontaudit performanced domain:file { open read getattr };
')
# Access /dev/cpuset/cpuset.cpus
r_dir_file(performanced, cgroup)
r_dir_file(performanced, cgroup_v2)