1type mediacodec, domain, mlstrustedsubject; 2type mediacodec_exec, exec_type, vendor_file_type, file_type; 3 4init_daemon_domain(mediacodec) 5 6# can route /dev/binder traffic to /dev/vndbinder 7vndbinder_use(mediacodec) 8 9hal_server_domain(mediacodec, hal_codec2) 10hal_server_domain(mediacodec, hal_omx) 11 12# mediacodec may use an input surface from a different Codec2 or OMX service 13hal_client_domain(mediacodec, hal_codec2) 14hal_client_domain(mediacodec, hal_omx) 15 16hal_client_domain(mediacodec, hal_allocator) 17hal_client_domain(mediacodec, hal_graphics_allocator) 18 19allow mediacodec gpu_device:chr_file rw_file_perms; 20allow mediacodec gpu_device:dir r_dir_perms; 21allow mediacodec ion_device:chr_file rw_file_perms; 22allow mediacodec dmabuf_system_heap_device:chr_file r_file_perms; 23allow mediacodec video_device:chr_file rw_file_perms; 24allow mediacodec video_device:dir search; 25 26crash_dump_fallback(mediacodec) 27 28# get aac_drc_* properties 29get_prop(mediacodec, aac_drc_prop) 30 31# mediacodec should never execute any executable without a domain transition 32neverallow mediacodec { file_type fs_type }:file execute_no_trans; 33 34# Media processing code is inherently risky and thus should have limited 35# permissions and be isolated from the rest of the system and network. 36# Lengthier explanation here: 37# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html 38neverallow mediacodec domain:{ udp_socket rawip_socket } *; 39neverallow mediacodec { domain userdebug_or_eng(`-su') }:tcp_socket *; 40 41