type mediacodec, domain, mlstrustedsubject;
type mediacodec_exec, exec_type, vendor_file_type, file_type;

init_daemon_domain(mediacodec)

# can route /dev/binder traffic to /dev/vndbinder
vndbinder_use(mediacodec)

hal_server_domain(mediacodec, hal_codec2)
hal_server_domain(mediacodec, hal_omx)

# mediacodec may use an input surface from a different Codec2 or OMX service
hal_client_domain(mediacodec, hal_codec2)
hal_client_domain(mediacodec, hal_omx)

hal_client_domain(mediacodec, hal_allocator)
hal_client_domain(mediacodec, hal_graphics_allocator)

allow mediacodec gpu_device:chr_file rw_file_perms;
allow mediacodec gpu_device:dir r_dir_perms;
allow mediacodec ion_device:chr_file rw_file_perms;
allow mediacodec dmabuf_system_heap_device:chr_file r_file_perms;
allow mediacodec video_device:chr_file rw_file_perms;
allow mediacodec video_device:dir search;

crash_dump_fallback(mediacodec)

# get aac_drc_* properties
get_prop(mediacodec, aac_drc_prop)

# mediacodec should never execute any executable without a domain transition
neverallow mediacodec { file_type fs_type }:file execute_no_trans;

# Media processing code is inherently risky and thus should have limited
# permissions and be isolated from the rest of the system and network.
# Lengthier explanation here:
# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html
neverallow mediacodec domain:{ udp_socket rawip_socket } *;
neverallow mediacodec { domain userdebug_or_eng(`-su') }:tcp_socket *;