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