platform_system_sepolicy/perfprofd.te

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# perfprofd - perf profile collection daemon
type perfprofd_exec, exec_type, file_type;
userdebug_or_eng(`
type perfprofd, domain, mlstrustedsubject;
init_daemon_domain(perfprofd)
# perfprofd needs to control CPU hot-plug in order to avoid kernel
# perfevents problems in cases where CPU goes on/off during measurement;
# this means read access to /sys/devices/system/cpu/possible
# and read/write access to /sys/devices/system/cpu/cpu*/online
allow perfprofd sysfs_devices_system_cpu:file rw_file_perms;
# perfprofd checks for the existence of and then invokes simpleperf;
# simpleperf retains perfprofd domain after exec
allow perfprofd system_file:file rx_file_perms;
# perfprofd reads a config file from /data/data/com.google.android.gms/files
allow perfprofd app_data_file:file r_file_perms;
allow perfprofd app_data_file:dir search;
allow perfprofd self:capability { dac_override };
# perfprofd opens a file for writing in /data/misc/perfprofd
allow perfprofd perfprofd_data_file:file create_file_perms;
allow perfprofd perfprofd_data_file:dir rw_dir_perms;
# perfprofd uses the system log
read_logd(perfprofd);
write_logd(perfprofd);
# simpleperf uses ioctl() to turn on kernel perf events measurements
allow perfprofd self:capability sys_admin;
# simpleperf needs to examine /proc to collect task/thread info
r_dir_file(perfprofd, domain)
# simpleperf needs to access /proc/<pid>/exec
allow perfprofd self:capability { sys_resource sys_ptrace };
neverallow perfprofd domain:process ptrace;
# simpleperf needs open/read any file that turns up in a profile
# to see whether it has a build ID
allow perfprofd exec_type:file r_file_perms;
# simpleperf is going to execute "sleep"
allow perfprofd toolbox_exec:file x_file_perms;
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