android_system_sepolicy/public/hal_audio.te
Jeff Vander Stoep b1a921e24e hal_audio: remove access to audiohal_data_file
This is no longer used and violates Treble data separation.

Bug: 68057930
Test: verify on Sailfish that /data/misc/audiohal doesn't exist
    This dir appears to be Qualcomm specific and should not have
    been defined in core policy.

Change-Id: I55fba7564203a7f8a1d8612abd36ec1f89dc869d
2017-10-21 03:29:36 +00:00

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# HwBinder IPC from client to server, and callbacks
binder_call(hal_audio_client, hal_audio_server)
binder_call(hal_audio_server, hal_audio_client)
add_hwservice(hal_audio_server, hal_audio_hwservice)
allow hal_audio_client hal_audio_hwservice:hwservice_manager find;
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 audio_device:dir r_dir_perms;
allow hal_audio 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;
###
### neverallow rules
###
# Should never execute any executable without a domain transition
neverallow hal_audio { file_type fs_type }:file execute_no_trans;
# Should never need network access.
# Disallow network sockets.
neverallow hal_audio domain:{ tcp_socket udp_socket rawip_socket } *;
# Only audio HAL may directly access the audio hardware
neverallow { halserverdomain -hal_audio_server } audio_device:chr_file *;