41 lines
1.7 KiB
Text
41 lines
1.7 KiB
Text
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# Add hal_codec2_hwservice to mediaswcodec_server
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allow mediaswcodec_server hal_codec2_hwservice:hwservice_manager { add find };
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allow mediaswcodec_server hidl_base_hwservice:hwservice_manager add;
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# Allow mediaswcodec_server access to composer sync fences
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allow mediaswcodec_server hal_graphics_composer:fd use;
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allow mediaswcodec_server ion_device:chr_file r_file_perms;
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allow mediaswcodec_server hal_camera:fd use;
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crash_dump_fallback(mediaswcodec_server)
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# Recieve gralloc buffer FDs from bufferhubd. Note that mediaswcodec_server never
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# directly connects to bufferhubd via PDX. Instead, a VR app acts as a bridge
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# between those two: it talks to hal_omx_server via Binder and talks to bufferhubd
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# via PDX. Thus, there is no need to use pdx_client macro.
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allow mediaswcodec_server bufferhubd:fd use;
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binder_call(mediaswcodec_server, hal_omx_client)
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binder_call(hal_omx_client, mediaswcodec_server)
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###
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### neverallow rules
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###
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# mediaswcodec_server should never execute any executable without a
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# domain transition
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neverallow mediaswcodec_server { file_type fs_type }:file execute_no_trans;
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# The goal of the mediaserver/codec split is to place media processing code into
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# restrictive sandboxes with limited responsibilities and thus limited
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# permissions. Example: Audioserver is only responsible for controlling audio
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# hardware and processing audio content. Cameraserver does the same for camera
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# hardware/content. Etc.
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#
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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 mediaswcodec_server domain:{ tcp_socket udp_socket rawip_socket } *;
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