1# HwBinder IPC from client to server, and callbacks
2binder_call(hal_drm_client, hal_drm_server)
3binder_call(hal_drm_server, hal_drm_client)
4
5hal_attribute_hwservice(hal_drm, hal_drm_hwservice)
6
7allow hal_drm hidl_memory_hwservice:hwservice_manager find;
8
9# Required by Widevine DRM (b/22990512)
10allow hal_drm self:process execmem;
11
12# Permit reading device's serial number from system properties
13get_prop(hal_drm, serialno_prop)
14
15# Read files already opened under /data
16allow hal_drm system_data_file:file { getattr read };
17
18# Read access to pseudo filesystems
19r_dir_file(hal_drm, cgroup)
20allow hal_drm cgroup:dir { search write };
21allow hal_drm cgroup:file w_file_perms;
22
23# Allow access to ion memory allocation device
24allow hal_drm ion_device:chr_file rw_file_perms;
25allow hal_drm hal_graphics_allocator:fd use;
26
27# Allow access to hidl_memory allocation service
28allow hal_drm hal_allocator_server:fd use;
29
30# Allow access to fds allocated by mediaserver
31allow hal_drm mediaserver:fd use;
32
33allow hal_drm sysfs:file r_file_perms;
34
35allow hal_drm tee_device:chr_file rw_file_perms;
36
37allow hal_drm_server { appdomain -isolated_app }:fd use;
38
39# only allow unprivileged socket ioctl commands
40allowxperm hal_drm self:{ rawip_socket tcp_socket udp_socket }
41  ioctl { unpriv_sock_ioctls unpriv_tty_ioctls };
42
43###
44### neverallow rules
45###
46
47# hal_drm should never execute any executable without a
48# domain transition
49neverallow hal_drm_server { file_type fs_type }:file execute_no_trans;
50
51# do not allow privileged socket ioctl commands
52neverallowxperm hal_drm_server domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls;
53