| # HwBinder IPC from client to server, and callbacks |
| binder_call(hal_audio_client, hal_audio_server) |
| binder_call(hal_audio_server, hal_audio_client) |
| |
| hal_attribute_hwservice(hal_audio, hal_audio_hwservice) |
| |
| allow hal_audio ion_device:chr_file r_file_perms; |
| |
| r_dir_file(hal_audio, proc) |
| r_dir_file(hal_audio, proc_asound) |
| allow hal_audio_server audio_device:dir r_dir_perms; |
| allow hal_audio_server audio_device:chr_file rw_file_perms; |
| |
| # Needed to provide debug dump output via dumpsys' pipes. |
| allow hal_audio shell:fd use; |
| allow hal_audio shell:fifo_file write; |
| allow hal_audio dumpstate:fd use; |
| allow hal_audio dumpstate:fifo_file write; |
| |
| # allow hal audio to use vnbinder |
| vndbinder_use(hal_audio) |
| |
| ### |
| ### neverallow rules |
| ### |
| |
| # Should never execute any executable without a domain transition |
| neverallow hal_audio_server { file_type fs_type }:file execute_no_trans; |
| |
| # Should never need network access. |
| # Disallow network sockets. |
| neverallow hal_audio_server domain:{ tcp_socket udp_socket rawip_socket } *; |
| |
| # Only audio HAL may directly access the audio hardware |
| neverallow { halserverdomain -hal_audio_server -hal_omx_server } audio_device:chr_file *; |
| |
| get_prop(hal_audio, bluetooth_a2dp_offload_prop) |
| get_prop(hal_audio, bluetooth_audio_hal_prop) |