# HwBinder IPC from client to server, and callbacks
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binder_call(hal_drm_client, hal_drm_server)
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binder_call(hal_drm_server, hal_drm_client)
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hal_attribute_hwservice(hal_drm, hal_drm_hwservice)
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allow hal_drm hidl_memory_hwservice:hwservice_manager find;
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# Required by Widevine DRM (b/22990512)
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allow hal_drm self:process execmem;
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# Permit reading device's serial number from system properties
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get_prop(hal_drm, serialno_prop)
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# Read files already opened under /data
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allow hal_drm system_data_file:file { getattr read };
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# Read access to pseudo filesystems
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r_dir_file(hal_drm, cgroup)
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allow hal_drm cgroup:dir { search write };
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allow hal_drm cgroup:file w_file_perms;
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# Allow access to ion memory allocation device
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allow hal_drm ion_device:chr_file rw_file_perms;
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allow hal_drm hal_graphics_allocator:fd use;
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# Allow access to fds allocated by mediaserver
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allow hal_drm mediaserver:fd use;
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allow hal_drm sysfs:file r_file_perms;
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allow hal_drm tee_device:chr_file rw_file_perms;
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# only allow unprivileged socket ioctl commands
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allowxperm hal_drm self:{ rawip_socket tcp_socket udp_socket }
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ioctl { unpriv_sock_ioctls unpriv_tty_ioctls };
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###
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### neverallow rules
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###
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# hal_drm should never execute any executable without a
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# domain transition
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neverallow hal_drm_server { file_type fs_type }:file execute_no_trans;
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# do not allow privileged socket ioctl commands
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neverallowxperm hal_drm_server domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls;
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