private/dumpstate.te

typeattribute dumpstate coredomain;
type dumpstate_tmpfs, file_type;

init_daemon_domain(dumpstate)

# Execute and transition to the vdc domain
domain_auto_trans(dumpstate, vdc_exec, vdc)

# Create tmpfs files for using memfd descriptors to get output from child
# processes.
tmpfs_domain(dumpstate)

# Acquire advisory lock on /system/etc/xtables.lock from ip[6]tables
allow dumpstate system_file:file lock;

allow dumpstate storaged_exec:file rx_file_perms;

# /data/misc/a11ytrace for accessibility traces
userdebug_or_eng(`
  allow dumpstate accessibility_trace_data_file:dir r_dir_perms;
  allow dumpstate accessibility_trace_data_file:file r_file_perms;
')

# /data/misc/wmtrace for wm traces
userdebug_or_eng(`
  allow dumpstate wm_trace_data_file:dir r_dir_perms;
  allow dumpstate wm_trace_data_file:file r_file_perms;
')

# /data/system/dropbox for dropbox entries
userdebug_or_eng(`
  allow dumpstate dropbox_data_file:dir r_dir_perms;
  allow dumpstate dropbox_data_file:file r_file_perms;
')

# Allow dumpstate to make binder calls to incidentd
binder_call(dumpstate, incidentd)

# Kill incident in case of a timeout
allow dumpstate incident:process { signal sigkill };

# Allow dumpstate to make binder calls to storaged service
binder_call(dumpstate, storaged)

# Allow dumpstate to make binder calls to statsd
binder_call(dumpstate, statsd)

# Allow dumpstate to talk to gpuservice over binder
binder_call(dumpstate, gpuservice);

# Allow dumpstate to talk to idmap over binder
binder_call(dumpstate, idmap);

# Allow dumpstate to talk to profcollectd over binder
userdebug_or_eng(`
  binder_call(dumpstate, profcollectd)
')

# Allow dumpstate to talk to automotive_display_service over binder
binder_call(dumpstate, automotive_display_service)

# Allow dumpstate to talk to virtual_camera service over binder
binder_call(dumpstate, virtual_camera)

# Collect metrics on boot time created by init
get_prop(dumpstate, boottime_prop)

# Signal native processes to dump their stack.
allow dumpstate {
  mediatranscoding
  statsd
  netd
  virtual_camera
}:process signal;

# Only allow dumpstate to dump Keystore on debuggable builds.
userdebug_or_eng(`
  allow dumpstate keystore:process signal;
')
dontaudit dumpstate keystore:process { signal };

# For collecting bugreports.
no_debugfs_restriction(`
  allow dumpstate debugfs_wakeup_sources:file r_file_perms;
')

allow dumpstate dev_type:blk_file getattr;
allow dumpstate webview_zygote:process signal;
allow dumpstate sysfs_dmabuf_stats:file r_file_perms;
dontaudit dumpstate update_engine:binder call;

# Read files in /proc
allow dumpstate {
  proc_net_tcp_udp
  proc_pid_max
}:file r_file_perms;

# For comminucating with the system process to do confirmation ui.
binder_call(dumpstate, incidentcompanion_service)

# Set properties.
# dumpstate_prop is used to share state with the Shell app.
set_prop(dumpstate, dumpstate_prop)
set_prop(dumpstate, exported_dumpstate_prop)

# dumpstate_options_prop is used to pass extra command-line args.
set_prop(dumpstate, dumpstate_options_prop)

# Allow dumpstate to kill vendor dumpstate service by init
set_prop(dumpstate, ctl_dumpstate_prop)

# For dumping dynamic partition information.
set_prop(dumpstate, lpdumpd_prop)
binder_call(dumpstate, lpdumpd)

# For dumping hypervisor information.
get_prop(dumpstate, hypervisor_prop)

# For dumping device-mapper and snapshot information.
allow dumpstate gsid_exec:file rx_file_perms;
set_prop(dumpstate, ctl_gsid_prop)
binder_call(dumpstate, gsid)

r_dir_file(dumpstate, ota_metadata_file)

# For starting (and killing) perfetto --save-for-bugreport. If a labelled trace
# is being recorded, the command above will serialize it into
# /data/misc/perfetto-traces/bugreport/*.pftrace .
domain_auto_trans(dumpstate, perfetto_exec, perfetto)
allow dumpstate perfetto:process signal;
allow dumpstate perfetto_traces_data_file:dir { search };
allow dumpstate perfetto_traces_bugreport_data_file:dir rw_dir_perms;
allow dumpstate perfetto_traces_bugreport_data_file:file { r_file_perms unlink };

# When exec-ing /system/bin/perfetto, dumpstates redirects stdio to /dev/null
# (which is labelled as dumpstate_tmpfs) to avoid leaking a FD to the bugreport
# zip file. These rules are to allow perfetto.te to inherit dumpstate's
# /dev/null.
allow perfetto dumpstate_tmpfs:file rw_file_perms;
allow perfetto dumpstate:fd use;

# system_dlkm_file for /system_dlkm partition
allow dumpstate system_dlkm_file:dir getattr;

# Allow dumpstate to execute derive_sdk in its own domain
domain_auto_trans(dumpstate, derive_sdk_exec, derive_sdk)