platform_system_sepolicy/adbd.te

# adbd seclabel is specified in init.rc since
# it lives in the rootfs and has no unique file type.
type adbd, domain;
permissive adbd;
unconfined_domain(adbd)
domain_auto_trans(adbd, shell_exec, shell)
# this is an entrypoint
allow adbd rootfs:file entrypoint;

# Read /data/misc/adb/adb_keys.
allow adbd adb_keys_file:dir search;
allow adbd adb_keys_file:file r_file_perms;

# Allow access in case /data/misc/adb still has the old type.
allow adbd system_data_file:dir search;
allow adbd system_data_file:file r_file_perms;