1# cameraserver - camera daemon 2type cameraserver, domain; 3type cameraserver_exec, system_file_type, exec_type, file_type; 4type cameraserver_tmpfs, file_type; 5 6binder_use(cameraserver) 7binder_call(cameraserver, binderservicedomain) 8binder_call(cameraserver, appdomain) 9binder_service(cameraserver) 10 11hal_client_domain(cameraserver, hal_camera) 12 13hal_client_domain(cameraserver, hal_graphics_allocator) 14 15allow cameraserver ion_device:chr_file rw_file_perms; 16allow cameraserver dmabuf_system_heap_device:chr_file r_file_perms; 17 18# Talk with graphics composer fences 19allow cameraserver hal_graphics_composer:fd use; 20 21add_service(cameraserver, cameraserver_service) 22add_service(cameraserver, fwk_camera_service) 23add_hwservice(cameraserver, fwk_camera_hwservice) 24 25allow cameraserver activity_service:service_manager find; 26allow cameraserver appops_service:service_manager find; 27allow cameraserver audioserver_service:service_manager find; 28allow cameraserver batterystats_service:service_manager find; 29allow cameraserver cameraproxy_service:service_manager find; 30allow cameraserver mediaserver_service:service_manager find; 31allow cameraserver package_native_service:service_manager find; 32allow cameraserver permission_checker_service:service_manager find; 33allow cameraserver processinfo_service:service_manager find; 34allow cameraserver scheduling_policy_service:service_manager find; 35allow cameraserver sensor_privacy_service:service_manager find; 36allow cameraserver surfaceflinger_service:service_manager find; 37 38allow cameraserver hidl_token_hwservice:hwservice_manager find; 39allow cameraserver hal_camera_service:service_manager find; 40 41# Allow to talk with surfaceflinger through unix stream socket 42allow cameraserver surfaceflinger:unix_stream_socket { read write }; 43 44### 45### neverallow rules 46### 47 48# cameraserver should never execute any executable without a 49# domain transition 50neverallow cameraserver { file_type fs_type }:file execute_no_trans; 51 52# The goal of the mediaserver split is to place media processing code into 53# restrictive sandboxes with limited responsibilities and thus limited 54# permissions. Example: Audioserver is only responsible for controlling audio 55# hardware and processing audio content. Cameraserver does the same for camera 56# hardware/content. Etc. 57# 58# Media processing code is inherently risky and thus should have limited 59# permissions and be isolated from the rest of the system and network. 60# Lengthier explanation here: 61# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html 62neverallow cameraserver domain:{ udp_socket rawip_socket } *; 63neverallow cameraserver { domain userdebug_or_eng(`-su') }:tcp_socket *; 64 65# Allow shell commands from ADB for CTS testing/dumping 66allow cameraserver adbd:fd use; 67allow cameraserver adbd:unix_stream_socket { read write }; 68allow cameraserver shell:fd use; 69allow cameraserver shell:unix_stream_socket { read write }; 70allow cameraserver shell:fifo_file { read write }; 71 72# Allow to talk with media codec 73allow cameraserver mediametrics_service:service_manager find; 74hal_client_domain(cameraserver, hal_codec2) 75hal_client_domain(cameraserver, hal_omx) 76hal_client_domain(cameraserver, hal_allocator) 77 78# Allow shell commands from ADB for CTS testing/dumping 79userdebug_or_eng(` 80 allow cameraserver su:fd use; 81 allow cameraserver su:fifo_file { read write }; 82 allow cameraserver su:unix_stream_socket { read write }; 83') 84