1# perfprofd - perf profile collection daemon 2type perfprofd, domain; 3type perfprofd_exec, exec_type, file_type; 4 5userdebug_or_eng(` 6 7 typeattribute perfprofd coredomain; 8 typeattribute perfprofd mlstrustedsubject; 9 10 # perfprofd access to sysfs directory structure. 11 allow perfprofd sysfs_type:dir search; 12 13 # perfprofd needs to control CPU hot-plug in order to avoid kernel 14 # perfevents problems in cases where CPU goes on/off during measurement; 15 # this means read access to /sys/devices/system/cpu/possible 16 # and read/write access to /sys/devices/system/cpu/cpu*/online 17 allow perfprofd sysfs_devices_system_cpu:file rw_file_perms; 18 19 # perfprofd checks for the existence of and then invokes simpleperf; 20 # simpleperf retains perfprofd domain after exec 21 allow perfprofd system_file:file rx_file_perms; 22 23 # perfprofd reads a config file from /data/data/com.google.android.gms/files 24 allow perfprofd app_data_file:file r_file_perms; 25 allow perfprofd app_data_file:dir search; 26 allow perfprofd self:global_capability_class_set { dac_override }; 27 28 # perfprofd opens a file for writing in /data/misc/perfprofd 29 allow perfprofd perfprofd_data_file:file create_file_perms; 30 allow perfprofd perfprofd_data_file:dir rw_dir_perms; 31 32 # perfprofd uses the system log 33 read_logd(perfprofd); 34 write_logd(perfprofd); 35 36 # perfprofd inspects /sys/power/wake_unlock 37 wakelock_use(perfprofd); 38 39 # perfprofd looks at thermals. 40 allow perfprofd sysfs_thermal:dir r_dir_perms; 41 42 # perfprofd checks power_supply. 43 r_dir_file(perfprofd, sysfs_batteryinfo) 44 45 # simpleperf reads kernel notes. 46 allow perfprofd sysfs_kernel_notes:file r_file_perms; 47 48 # Simpleperf & perfprofd query a range of proc stats. 49 allow perfprofd proc_loadavg:file r_file_perms; 50 allow perfprofd proc_stat:file r_file_perms; 51 allow perfprofd proc_modules:file r_file_perms; 52 53 # simpleperf writes to perf_event_paranoid under /proc. 54 allow perfprofd proc_perf:file write; 55 56 # Simpleperf: kptr_restrict. This would be required to dump kernel symbols. 57 dontaudit perfprofd proc_security:file *; 58 59 # simpleperf uses ioctl() to turn on kernel perf events measurements 60 allow perfprofd self:global_capability_class_set sys_admin; 61 62 # simpleperf needs to examine /proc to collect task/thread info 63 r_dir_file(perfprofd, domain) 64 65 # simpleperf needs to access /proc/<pid>/exec 66 allow perfprofd self:global_capability_class_set { sys_resource sys_ptrace }; 67 neverallow perfprofd domain:process ptrace; 68 69 # simpleperf needs open/read any file that turns up in a profile 70 # to see whether it has a build ID 71 allow perfprofd exec_type:file r_file_perms; 72 # App & ART artifacts. 73 r_dir_file(perfprofd, apk_data_file) 74 r_dir_file(perfprofd, dalvikcache_data_file) 75 # Vendor libraries. 76 r_dir_file(perfprofd, vendor_file) 77 # Vendor apps. 78 r_dir_file(perfprofd, vendor_app_file) 79 80 # simpleperf will set security.perf_harden to enable access to perf_event_open() 81 set_prop(perfprofd, shell_prop) 82 83 # simpleperf examines debugfs on startup to collect tracepoint event types 84 r_dir_file(perfprofd, debugfs_tracing) 85 r_dir_file(perfprofd, debugfs_tracing_debug) 86 87 # simpleperf is going to execute "sleep" 88 allow perfprofd toolbox_exec:file rx_file_perms; 89 # simpleperf is going to execute "mv" on a temp file 90 allow perfprofd shell_exec:file rx_file_perms; 91 92 # needed for simpleperf on some kernels 93 allow perfprofd self:global_capability_class_set ipc_lock; 94 95 # simpleperf attempts to put a temp file into /data/local/tmp. Do not allow, 96 # use the fallback cwd code, do not spam the log. But ensure this is correctly 97 # removed at some point. b/70232908. 98 dontaudit perfprofd shell_data_file:dir *; 99 dontaudit perfprofd shell_data_file:file *; 100 101 # Allow perfprofd to publish a binder service and make binder calls. 102 binder_use(perfprofd) 103 add_service(perfprofd, perfprofd_service) 104 105 # Use devpts for streams from cmd. 106 # 107 # This is normally granted to binderservicedomain, but this service 108 # has tighter restrictions on the callers (see below), so must enable 109 # this manually. 110 allow perfprofd devpts:chr_file rw_file_perms; 111 112 # Use socket & pipe supplied by su, for cmd perfprofd dump. 113 allow perfprofd su:unix_stream_socket { read write getattr sendto }; 114 allow perfprofd su:fifo_file r_file_perms; 115 116 # Allow perfprofd to submit to dropbox. 117 allow perfprofd dropbox_service:service_manager find; 118 binder_call(perfprofd, system_server) 119') 120