| # mediatranscoding - daemon for transcoding video and image. |
| type mediatranscoding, domain; |
| type mediatranscoding_exec, system_file_type, exec_type, file_type; |
| |
| binder_use(mediatranscoding) |
| binder_call(mediatranscoding, binderservicedomain) |
| binder_service(mediatranscoding) |
| |
| add_service(mediatranscoding, mediatranscoding_service) |
| |
| allow mediatranscoding system_server:fd use; |
| allow mediatranscoding activity_service:service_manager find; |
| allow mediatranscoding untrusted_app:binder call; |
| |
| # allow mediatranscoding service read/write permissions for file sources |
| allow mediatranscoding sdcardfs:file { getattr read write }; |
| allow mediatranscoding media_rw_data_file:file { getattr read write }; |
| allow mediatranscoding apk_data_file:file { getattr read }; |
| |
| # mediatranscoding should never execute any executable without a |
| # domain transition |
| neverallow mediatranscoding { file_type fs_type }:file execute_no_trans; |
| |
| # The goal of the mediaserver split is to place media processing code into |
| # restrictive sandboxes with limited responsibilities and thus limited |
| # permissions. Example: Audioserver is only responsible for controlling audio |
| # hardware and processing audio content. Cameraserver does the same for camera |
| # hardware/content. Etc. |
| # |
| # 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 mediatranscoding domain:{ tcp_socket udp_socket rawip_socket } *; |
