microdroid/sepolicy/system/private/shell.te

typeattribute shell coredomain, mlstrustedsubject;

# allow shell input injection
allow shell uhid_device:chr_file rw_file_perms;

# systrace support - allow atrace to run
allow shell debugfs_tracing_debug:dir r_dir_perms;
allow shell debugfs_tracing:dir r_dir_perms;
allow shell debugfs_tracing:file rw_file_perms;
allow shell debugfs_trace_marker:file getattr;
allow shell atrace_exec:file rx_file_perms;

userdebug_or_eng(`
  allow shell debugfs_tracing_debug:file rw_file_perms;
')

# read config.gz for CTS purposes
allow shell config_gz:file r_file_perms;

# Run app_process.
# XXX Transition into its own domain?
app_domain(shell)

# allow shell to call dumpsys storaged
binder_call(shell, storaged)

# Perform SELinux access checks, needed for CTS
selinux_check_access(shell)
selinux_check_context(shell)

# Control Perfetto traced and obtain traces from it.
# Needed for Studio and debugging.
unix_socket_connect(shell, traced_consumer, traced)

# Allow shell binaries to write trace data to Perfetto. Used for testing and
# cmdline utils.
perfetto_producer(shell)

domain_auto_trans(shell, vendor_shell_exec, vendor_shell)

# Allow shell binaries to exec the perfetto cmdline util and have that
# transition into its own domain, so that it behaves consistently to
# when exec()-d by statsd.
domain_auto_trans(shell, perfetto_exec, perfetto)
# Allow to send SIGINT to perfetto when daemonized.
allow shell perfetto:process signal;

# Allow shell to run adb shell cmd stats commands. Needed for CTS.
binder_call(shell, statsd);

# Allow shell to read and unlink traces stored in /data/misc/a11ytraces.
userdebug_or_eng(`
  allow shell accessibility_trace_data_file:dir rw_dir_perms;
  allow shell accessibility_trace_data_file:file { r_file_perms unlink };
')

# Allow shell to read and unlink traces stored in /data/misc/perfetto-traces.
allow shell perfetto_traces_data_file:dir rw_dir_perms;
allow shell perfetto_traces_data_file:file { r_file_perms unlink };
# ... and /data/misc/perfetto-traces/bugreport/ .
allow shell perfetto_traces_bugreport_data_file:dir rw_dir_perms;
allow shell perfetto_traces_bugreport_data_file:file { r_file_perms unlink };

# Allow shell to create/remove configs stored in /data/misc/perfetto-configs.
allow shell perfetto_configs_data_file:dir rw_dir_perms;
allow shell perfetto_configs_data_file:file create_file_perms;

# Allow shell to run adb shell cmd gpu commands.
binder_call(shell, gpuservice);

# Allow shell to use atrace HAL
hal_client_domain(shell, hal_atrace)

# For hostside tests such as CTS listening ports test.
allow shell proc_net_tcp_udp:file r_file_perms;

# The dl.exec_linker* tests need to execute /system/bin/linker
# b/124789393
allow shell system_linker_exec:file rx_file_perms;

# Renderscript host side tests depend on being able to execute
# /system/bin/bcc (b/126388046)
allow shell rs_exec:file rx_file_perms;

# Allow (host-driven) ART run-tests to execute dex2oat, in order to
# check ART's compiler.
allow shell dex2oat_exec:file rx_file_perms;

# Allow shell to start and comminicate with lpdumpd.
set_prop(shell, lpdumpd_prop);
binder_call(shell, lpdumpd)

# Allow shell to set and read value of properties used for CTS tests of
# userspace reboot
set_prop(shell, userspace_reboot_test_prop)

# Allow shell to set this property used for rollback tests
set_prop(shell, rollback_test_prop)

# Allow shell to get encryption policy of /data/local/tmp/, for CTS
allowxperm shell shell_data_file:dir ioctl {
  FS_IOC_GET_ENCRYPTION_POLICY
  FS_IOC_GET_ENCRYPTION_POLICY_EX
};

# Allow shell to execute simpleperf without a domain transition.
allow shell simpleperf_exec:file rx_file_perms;

# Allow shell to execute profcollectctl without a domain transition.
allow shell profcollectd_exec:file rx_file_perms;

# Allow shell to call perf_event_open for profiling other shell processes, but
# not the whole system.
allow shell self:perf_event { open read write kernel };
neverallow shell self:perf_event ~{ open read write kernel };

# Set properties.
set_prop(shell, shell_prop)
set_prop(shell, ctl_bugreport_prop)
set_prop(shell, ctl_dumpstate_prop)
set_prop(shell, dumpstate_prop)
set_prop(shell, exported_dumpstate_prop)
set_prop(shell, debug_prop)
set_prop(shell, perf_drop_caches_prop)
set_prop(shell, powerctl_prop)
set_prop(shell, log_tag_prop)
set_prop(shell, wifi_log_prop)
# Allow shell to start/stop traced via the persist.traced.enable
# property (which also takes care of /data/misc initialization).
set_prop(shell, traced_enabled_prop)
# adjust is_loggable properties
userdebug_or_eng(`set_prop(shell, log_prop)')
# logpersist script
userdebug_or_eng(`set_prop(shell, logpersistd_logging_prop)')
# Allow shell to start/stop heapprofd via the persist.heapprofd.enable
# property.
set_prop(shell, heapprofd_enabled_prop)
# Allow shell to start/stop traced_perf via the persist.traced_perf.enable
# property.
set_prop(shell, traced_perf_enabled_prop)
# Allow shell to start/stop gsid via ctl.start|stop|restart gsid.
set_prop(shell, ctl_gsid_prop)
set_prop(shell, ctl_snapuserd_prop)
# Allow shell to enable Dynamic System Update
set_prop(shell, dynamic_system_prop)
# Allow shell to mock an OTA using persist.pm.mock-upgrade
set_prop(shell, mock_ota_prop)

# Read device's serial number from system properties
get_prop(shell, serialno_prop)

# Allow shell to read the vendor security patch level for CTS
get_prop(shell, vendor_security_patch_level_prop)

# Read state of logging-related properties
get_prop(shell, device_logging_prop)

# Read state of boot reason properties
get_prop(shell, bootloader_boot_reason_prop)
get_prop(shell, last_boot_reason_prop)
get_prop(shell, system_boot_reason_prop)

# Allow reading the outcome of perf_event_open LSM support test for CTS.
get_prop(shell, init_perf_lsm_hooks_prop)

# Allow shell to read boot image timestamps and fingerprints.
get_prop(shell, build_bootimage_prop)

userdebug_or_eng(`set_prop(shell, persist_debug_prop)')

# Allow to issue control commands to profcollectd binder service.
userdebug_or_eng(`
  allow shell profcollectd:binder call;
')

# Allow shell to read the keystore key contexts files. Used by native tests to test label lookup.
allow shell keystore2_key_contexts_file:file r_file_perms;

# Allow shell to access the keystore2_key namespace shell_key. Mainly used for native tests.
allow shell shell_key:keystore2_key { delete rebind use get_info update };

# Allow shell to write db.log.detailed, db.log.slow_query_threshold*
set_prop(shell, sqlite_log_prop)

# Allow shell to write MTE properties even on user builds.
set_prop(shell, arm64_memtag_prop)

# Allow shell to read the dm-verity props on user builds.
get_prop(shell, verity_status_prop)

# Allow shell to read Virtual A/B related properties
get_prop(shell, virtual_ab_prop)

# Allow shell to launch microdroid_launcher in its own domain
# TODO(b/186396070) remove this when microdroid_manager can do this
domain_auto_trans(shell, microdroid_app_exec, microdroid_app)
domain_auto_trans(shell, microdroid_manager_exec, microdroid_manager)

# Never allow others to set or get the perf.drop_caches property.
neverallow { domain -shell -init } perf_drop_caches_prop:property_service set;
neverallow { domain -shell -init -dumpstate } perf_drop_caches_prop:file read;

# Allow ReadDefaultFstab() for CTS.
read_fstab(shell)