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# surfaceflinger - display compositor service
type surfaceflinger, domain;
type surfaceflinger_exec, exec_type, file_type;
init_daemon_domain(surfaceflinger)
typeattribute surfaceflinger mlstrustedsubject;
# Talk to init over the property socket.
unix_socket_connect(surfaceflinger, property, init)
# Perform Binder IPC.
binder_use(surfaceflinger)
binder_call(surfaceflinger, binderservicedomain)
binder_call(surfaceflinger, appdomain)
binder_call(surfaceflinger, bootanim)
binder_service(surfaceflinger)
# Binder IPC to bu, presently runs in adbd domain.
binder_call(surfaceflinger, adbd)
# Read /proc/pid files for Binder clients.
r_dir_file(surfaceflinger, binderservicedomain)
r_dir_file(surfaceflinger, appdomain)
# Access the GPU.
allow surfaceflinger gpu_device:chr_file rw_file_perms;
# Access /dev/graphics/fb0.
allow surfaceflinger graphics_device:dir search;
allow surfaceflinger graphics_device:chr_file rw_file_perms;
# Access /dev/video1.
allow surfaceflinger video_device:dir r_dir_perms;
allow surfaceflinger video_device:chr_file rw_file_perms;
# Create and use netlink kobject uevent sockets.
allow surfaceflinger self:netlink_kobject_uevent_socket create_socket_perms;
# Set properties.
allow surfaceflinger system_prop:property_service set;
allow surfaceflinger ctl_bootanim_prop:property_service set;
# Use open files supplied by an app.
allow surfaceflinger appdomain:fd use;
allow surfaceflinger app_data_file:file { read write };
# Use open file provided by bootanim.
allow surfaceflinger bootanim:fd use;
# Allow a dumpstate triggered screenshot
binder_call(surfaceflinger, dumpstate)
binder_call(surfaceflinger, shell)
r_dir_file(surfaceflinger, dumpstate)
# Needed on some devices for playing DRM protected content,
# but seems expected and appropriate for all devices.
allow surfaceflinger tee:unix_stream_socket connectto;
allow surfaceflinger tee_device:chr_file rw_file_perms;
allow surfaceflinger surfaceflinger_service:service_manager add;
###
### Neverallow rules
###
### surfaceflinger should NEVER do any of this
# Do not allow accessing SDcard files as unsafe ejection could
# cause the kernel to kill the process.
neverallow surfaceflinger sdcard_type:file rw_file_perms;
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