fe12b61642
Start labeling the directory /sys/kernel/debug/tracing. The files in this directory need to be writable to the shell user. Remove global debugfs:file write access. This was added in the days before we could label individual debugfs files. Change-Id: I79c1fcb63b4b9b903dcabd99b6b25e201fe540a3
59 lines
2.1 KiB
Text
59 lines
2.1 KiB
Text
# perfprofd - perf profile collection daemon
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type perfprofd_exec, exec_type, file_type;
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userdebug_or_eng(`
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type perfprofd, domain, domain_deprecated, mlstrustedsubject;
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init_daemon_domain(perfprofd)
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# perfprofd needs to control CPU hot-plug in order to avoid kernel
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# perfevents problems in cases where CPU goes on/off during measurement;
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# this means read access to /sys/devices/system/cpu/possible
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# and read/write access to /sys/devices/system/cpu/cpu*/online
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allow perfprofd sysfs_devices_system_cpu:file rw_file_perms;
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# perfprofd checks for the existence of and then invokes simpleperf;
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# simpleperf retains perfprofd domain after exec
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allow perfprofd system_file:file rx_file_perms;
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# perfprofd reads a config file from /data/data/com.google.android.gms/files
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allow perfprofd app_data_file:file r_file_perms;
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allow perfprofd app_data_file:dir search;
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allow perfprofd self:capability { dac_override };
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# perfprofd opens a file for writing in /data/misc/perfprofd
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allow perfprofd perfprofd_data_file:file create_file_perms;
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allow perfprofd perfprofd_data_file:dir rw_dir_perms;
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# perfprofd uses the system log
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read_logd(perfprofd);
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write_logd(perfprofd);
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# perfprofd inspects /sys/power/wake_unlock
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wakelock_use(perfprofd);
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# simpleperf uses ioctl() to turn on kernel perf events measurements
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allow perfprofd self:capability sys_admin;
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# simpleperf needs to examine /proc to collect task/thread info
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r_dir_file(perfprofd, domain)
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# simpleperf needs to access /proc/<pid>/exec
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allow perfprofd self:capability { sys_resource sys_ptrace };
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neverallow perfprofd domain:process ptrace;
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# simpleperf needs open/read any file that turns up in a profile
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# to see whether it has a build ID
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allow perfprofd exec_type:file r_file_perms;
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# simpleperf examines debugfs on startup to collect tracepoint event types
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allow perfprofd debugfs_tracing:file r_file_perms;
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# simpleperf is going to execute "sleep"
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allow perfprofd toolbox_exec:file rx_file_perms;
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# needed for simpleperf on some kernels
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allow perfprofd self:capability ipc_lock;
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')
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