5e37271df8
system_file_type is a new attribute used to identify files which exist on the /system partition. It's useful for allow rules in init, which are based off of a blacklist of writable files. Additionally, it's useful for constructing neverallow rules to prevent regressions. Additionally, add commented out tests which enforce that all files on the /system partition have the system_file_type attribute. These tests will be uncommented in a future change after all the device-specific policies are cleaned up. Test: Device boots and no obvious problems. Change-Id: Id9bae6625f042594c8eba74ca712abb09702c1e5
31 lines
1.2 KiB
Plaintext
31 lines
1.2 KiB
Plaintext
# performanced
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type performanced, domain, mlstrustedsubject;
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type performanced_exec, system_file_type, exec_type, file_type;
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# Needed to check for app permissions.
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binder_use(performanced)
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binder_call(performanced, system_server)
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allow performanced permission_service:service_manager find;
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pdx_server(performanced, performance_client)
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# TODO: use file caps to obtain sys_nice instead of setuid / setgid.
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allow performanced self:global_capability_class_set { setuid setgid sys_nice };
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# Access /proc to validate we're only affecting threads in the same thread group.
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# Performanced also shields unbound kernel threads. It scans every task in the
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# root cpu set, but only affects the kernel threads.
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r_dir_file(performanced, { appdomain bufferhubd kernel surfaceflinger })
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dontaudit performanced domain:dir read;
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allow performanced { appdomain bufferhubd kernel surfaceflinger }:process setsched;
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# These /proc accesses only show up in permissive mode but they
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# generate a lot of noise in the log.
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userdebug_or_eng(`
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dontaudit performanced domain:dir open;
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dontaudit performanced domain:file { open read getattr };
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')
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# Access /dev/cpuset/cpuset.cpus
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r_dir_file(performanced, cgroup)
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