platform_system_sepolicy/private/snapshotctl.te

type snapshotctl, domain, coredomain;
type snapshotctl_exec, system_file_type, exec_type, file_type;

# Allow init to run snapshotctl and do auto domain transfer.
init_daemon_domain(snapshotctl);

# Allow to start gsid service.
set_prop(snapshotctl, ctl_gsid_prop)

# Allow to talk to gsid.
binder_use(snapshotctl)
allow snapshotctl gsi_service:service_manager find;
binder_call(snapshotctl, gsid)

# Allow to create/read/write/delete OTA metadata files for snapshot status and COW file status.
allow snapshotctl metadata_file:dir search;
allow snapshotctl ota_metadata_file:dir rw_dir_perms;
allow snapshotctl ota_metadata_file:file create_file_perms;

# Allow to get A/B slot suffix from device tree or kernel cmdline.
r_dir_file(snapshotctl, sysfs_dt_firmware_android);
allow snapshotctl proc_cmdline:file r_file_perms;

# Needed to (re-)map logical partitions.
allow snapshotctl block_device:dir r_dir_perms;
allow snapshotctl super_block_device:blk_file r_file_perms;

# Interact with device-mapper to collapse snapshots.
allow snapshotctl dm_device:chr_file rw_file_perms;

# Needed to mutate device-mapper nodes.
allow snapshotctl self:global_capability_class_set sys_admin;

# Snapshotctl talk to boot control HAL to set merge status.
hwbinder_use(snapshotctl)
hal_client_domain(snapshotctl, hal_bootctl)

# Allow snapshotctl to write to statsd socket.
unix_socket_send(snapshotctl, statsdw, statsd)

# Logging
userdebug_or_eng(`
  allow snapshotctl snapshotctl_log_data_file:dir rw_dir_perms;
  allow snapshotctl snapshotctl_log_data_file:file create_file_perms;
')