cameraserver: Build up least privileged policy
Remove all permissions not observed during testing. Remove domain_deprecated. Bug: 26982110 Change-Id: I33f1887c95bdf378c945319494378225b41db215
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@ -37,7 +37,6 @@ set_prop(bluetooth, ctl_dhcp_pan_prop)
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allow bluetooth audioserver_service:service_manager find;
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allow bluetooth bluetooth_service:service_manager find;
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allow bluetooth cameraserver_service:service_manager find;
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allow bluetooth drmserver_service:service_manager find;
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allow bluetooth mediaserver_service:service_manager find;
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allow bluetooth radio_service:service_manager find;
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@ -1,116 +1,35 @@
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# cameraserver - camera daemon
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type cameraserver, domain, domain_deprecated;
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type cameraserver, domain;
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type cameraserver_exec, exec_type, file_type;
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typeattribute cameraserver mlstrustedsubject;
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# STOPSHIP. cameraserver into permissive mode to collect denials from
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# droidfooders
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permissive cameraserver;
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net_domain(cameraserver)
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init_daemon_domain(cameraserver)
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r_dir_file(cameraserver, sdcard_type)
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binder_use(cameraserver)
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binder_call(cameraserver, binderservicedomain)
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binder_call(cameraserver, appdomain)
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binder_service(cameraserver)
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# Required by Widevine DRM (b/22990512)
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allow cameraserver self:process execmem;
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allow cameraserver kernel:system module_request;
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allow cameraserver media_data_file:dir create_dir_perms;
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allow cameraserver media_data_file:file create_file_perms;
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# access /data/misc/camera
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allow cameraserver camera_data_file:dir create_dir_perms;
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allow cameraserver camera_data_file:file create_file_perms;
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allow cameraserver app_data_file:dir search;
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allow cameraserver app_data_file:file rw_file_perms;
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allow cameraserver sdcard_type:file write;
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allow cameraserver gpu_device:chr_file rw_file_perms;
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allow cameraserver video_device:dir r_dir_perms;
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allow cameraserver video_device:chr_file rw_file_perms;
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allow cameraserver audio_device:dir r_dir_perms;
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allow cameraserver tee_device:chr_file rw_file_perms;
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allow cameraserver ion_device:chr_file rw_file_perms;
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set_prop(cameraserver, audio_prop)
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# Access audio devices at all.
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allow cameraserver audio_device:chr_file rw_file_perms;
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# XXX Label with a specific type?
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allow cameraserver sysfs:file r_file_perms;
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# Read resources from open apk files passed over Binder.
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allow cameraserver apk_data_file:file { read getattr };
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allow cameraserver asec_apk_file:file { read getattr };
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# Read /data/data/com.android.providers.telephony files passed over Binder.
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allow cameraserver radio_data_file:file { read getattr };
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# Use pipes passed over Binder from app domains.
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allow cameraserver appdomain:fifo_file { getattr read write };
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allow cameraserver rpmsg_device:chr_file rw_file_perms;
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# Inter System processes communicate over named pipe (FIFO)
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allow cameraserver system_server:fifo_file r_file_perms;
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# Camera data
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r_dir_file(cameraserver, camera_data_file)
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r_dir_file(cameraserver, media_rw_data_file)
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# Grant access to audio files to cameraserver
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allow cameraserver audio_data_file:dir ra_dir_perms;
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allow cameraserver audio_data_file:file create_file_perms;
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# Read/[write] to /proc/net/xt_qtaguid/ctrl and /dev/xt_qtaguid
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allow cameraserver qtaguid_proc:file rw_file_perms;
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allow cameraserver qtaguid_device:chr_file r_file_perms;
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# Allow abstract socket connection
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allow cameraserver rild:unix_stream_socket { connectto read write setopt };
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# Needed on some devices for playing DRM protected content,
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# but seems expected and appropriate for all devices.
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unix_socket_connect(cameraserver, drmserver, drmserver)
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# Needed on some devices for playing audio on paired BT device,
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# but seems appropriate for all devices.
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unix_socket_connect(cameraserver, bluetooth, bluetooth)
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# Connect to tee service.
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allow cameraserver tee:unix_stream_socket connectto;
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allow cameraserver activity_service:service_manager find;
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allow cameraserver appops_service:service_manager find;
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allow cameraserver audioserver_service:service_manager find;
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allow cameraserver cameraproxy_service:service_manager find;
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allow cameraserver cameraserver_service:service_manager { add find };
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allow cameraserver batterystats_service:service_manager find;
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allow cameraserver drmserver_service:service_manager find;
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allow cameraserver mediaextractor_service:service_manager find;
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allow cameraserver cameraproxy_service:service_manager find;
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allow cameraserver cameraserver_service:service_manager add;
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allow cameraserver mediaserver_service:service_manager find;
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allow cameraserver permission_service:service_manager find;
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allow cameraserver power_service:service_manager find;
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allow cameraserver processinfo_service:service_manager find;
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allow cameraserver scheduling_policy_service:service_manager find;
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allow cameraserver surfaceflinger_service:service_manager find;
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# /oem access
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allow cameraserver oemfs:dir search;
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allow cameraserver oemfs:file r_file_perms;
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use_drmservice(cameraserver)
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allow cameraserver drmserver:drmservice {
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consumeRights
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setPlaybackStatus
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openDecryptSession
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closeDecryptSession
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initializeDecryptUnit
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decrypt
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finalizeDecryptUnit
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pread
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};
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###
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### neverallow rules
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###
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@ -90,7 +90,6 @@ allow mediaserver tee:unix_stream_socket connectto;
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allow mediaserver activity_service:service_manager find;
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allow mediaserver appops_service:service_manager find;
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allow mediaserver audioserver_service:service_manager find;
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allow mediaserver cameraserver_service:service_manager find;
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allow mediaserver cameraproxy_service:service_manager find;
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allow mediaserver batterystats_service:service_manager find;
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allow mediaserver drmserver_service:service_manager find;
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1
radio.te
1
radio.te
@ -28,7 +28,6 @@ auditallow radio system_radio_prop:property_service set;
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set_prop(radio, ctl_rildaemon_prop)
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allow radio audioserver_service:service_manager find;
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allow radio cameraserver_service:service_manager find;
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allow radio drmserver_service:service_manager find;
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allow radio mediaserver_service:service_manager find;
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allow radio radio_service:service_manager { add find };
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@ -54,7 +54,6 @@ allow surfaceflinger tee_device:chr_file rw_file_perms;
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# media.player service
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allow surfaceflinger audioserver_service:service_manager find;
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allow surfaceflinger cameraserver_service:service_manager find;
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allow surfaceflinger mediaserver_service:service_manager find;
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allow surfaceflinger permission_service:service_manager find;
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allow surfaceflinger power_service:service_manager find;
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@ -153,8 +153,6 @@ r_dir_file(system_server, inputflinger)
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# Use sockets received over binder from various services.
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allow system_server audioserver:tcp_socket rw_socket_perms;
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allow system_server audioserver:udp_socket rw_socket_perms;
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allow system_server cameraserver:tcp_socket rw_socket_perms;
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allow system_server cameraserver:udp_socket rw_socket_perms;
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allow system_server mediaserver:tcp_socket rw_socket_perms;
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allow system_server mediaserver:udp_socket rw_socket_perms;
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