type mediacodec, domain, mlstrustedsubject;
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type mediacodec_exec, exec_type, vendor_file_type, file_type;
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init_daemon_domain(mediacodec)
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not_full_treble(`
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# on legacy devices, continue to allow /dev/binder traffic
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binder_use(mediacodec)
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binder_service(mediacodec)
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add_service(mediacodec, mediacodec_service)
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allow mediacodec mediametrics_service:service_manager find;
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allow mediacodec surfaceflinger_service:service_manager find;
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')
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# can route /dev/binder traffic to /dev/vndbinder
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vndbinder_use(mediacodec)
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hal_server_domain(mediacodec, hal_codec2)
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hal_server_domain(mediacodec, hal_omx)
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# mediacodec may use an input surface from a different Codec2 or OMX service
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hal_client_domain(mediacodec, hal_codec2)
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hal_client_domain(mediacodec, hal_omx)
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hal_client_domain(mediacodec, hal_allocator)
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hal_client_domain(mediacodec, hal_graphics_allocator)
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allow mediacodec gpu_device:chr_file rw_file_perms;
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allow mediacodec ion_device:chr_file rw_file_perms;
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allow mediacodec video_device:chr_file rw_file_perms;
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allow mediacodec video_device:dir search;
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crash_dump_fallback(mediacodec)
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# mediacodec should never execute any executable without a domain transition
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neverallow mediacodec { file_type fs_type }:file execute_no_trans;
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# Media processing code is inherently risky and thus should have limited
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# permissions and be isolated from the rest of the system and network.
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# Lengthier explanation here:
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# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html
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neverallow mediacodec domain:{ tcp_socket udp_socket rawip_socket } *;
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