3696a20b11
This reverts commit dd2079d7f0.
Bug: 199086135
Test: run simpleperf to record systemui.
Change-Id: Ibc6017d53a9835a2f8ff5409c825c0d70ef23e25
51 lines
2.2 KiB
Text
51 lines
2.2 KiB
Text
# Domain used when running /system/bin/simpleperf to profile a specific app.
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# Entered either by the app itself exec-ing the binary, or through
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# simpleperf_app_runner (with shell as its origin). Certain other domains
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# (runas_app, shell) can also exec this binary without a domain transition.
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typeattribute simpleperf coredomain;
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type simpleperf_exec, system_file_type, exec_type, file_type;
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# Define apps that can be marked debuggable/profileable and be profiled by simpleperf.
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define(`simpleperf_profileable_apps', `{
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ephemeral_app
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isolated_app
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platform_app
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priv_app
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untrusted_app_all
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}')
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domain_auto_trans({ simpleperf_profileable_apps -runas_app }, simpleperf_exec, simpleperf)
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# When running in this domain, simpleperf is scoped to profiling an individual
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# app. The necessary MAC permissions for profiling are more maintainable and
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# consistent if simpleperf is marked as an app domain as well (as, for example,
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# it will then see the same set of system libraries as the app).
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app_domain(simpleperf)
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untrusted_app_domain(simpleperf)
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# Allow ptrace attach to the target app, for reading JIT debug info (using
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# process_vm_readv) during unwinding and symbolization.
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allow simpleperf simpleperf_profileable_apps:process ptrace;
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# Allow using perf_event_open syscall for profiling the target app.
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allow simpleperf self:perf_event { open read write kernel };
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# Allow /proc/<pid> access for the target app (for example, when trying to
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# discover it by cmdline).
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r_dir_file(simpleperf, simpleperf_profileable_apps)
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# Allow apps signalling simpleperf domain, which is the domain that the simpleperf
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# profiler runs as when executed by the app. The signals are used to control
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# the profiler (which would be profiling the app that is sending the signal).
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allow simpleperf_profileable_apps simpleperf:process signal;
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# Suppress denial logspam when simpleperf is trying to find a matching process
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# by scanning /proc/<pid>/cmdline files. The /proc/<pid> directories are within
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# the same domain as their respective processes, most of which this domain is
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# not allowed to see.
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dontaudit simpleperf domain:dir search;
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# Neverallows:
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# Profiling must be confined to the scope of an individual app.
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neverallow simpleperf self:perf_event ~{ open read write kernel };
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