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
5add_hwservice(hal_drm_server, hal_drm_hwservice)
6allow hal_drm_client hal_drm_hwservice:hwservice_manager find;
7
8allow hal_drm hidl_memory_hwservice:hwservice_manager find;
9
10# Required by Widevine DRM (b/22990512)
11allow hal_drm self:process execmem;
12
13# Permit reading device's serial number from system properties
14get_prop(hal_drm, serialno_prop)
15
16# System file accesses
17allow hal_drm system_file:dir r_dir_perms;
18allow hal_drm system_file:file r_file_perms;
19allow hal_drm system_file:lnk_file r_file_perms;
20
21# Read files already opened under /data
22allow hal_drm system_data_file:file { getattr read };
23
24# Read access to pseudo filesystems
25r_dir_file(hal_drm, cgroup)
26allow hal_drm cgroup:dir { search write };
27allow hal_drm cgroup:file w_file_perms;
28
29# Allow access to ion memory allocation device
30allow hal_drm ion_device:chr_file rw_file_perms;
31allow hal_drm hal_graphics_allocator:fd use;
32
33# Allow access to fds allocated by mediaserver
34allow hal_drm mediaserver:fd use;
35
36allow hal_drm sysfs:file r_file_perms;
37
38allow hal_drm tee_device:chr_file rw_file_perms;
39
40# only allow unprivileged socket ioctl commands
41allowxperm hal_drm self:{ rawip_socket tcp_socket udp_socket }
42  ioctl { unpriv_sock_ioctls unpriv_tty_ioctls };
43
44###
45### neverallow rules
46###
47
48# hal_drm should never execute any executable without a
49# domain transition
50neverallow hal_drm_server { file_type fs_type }:file execute_no_trans;
51
52# do not allow privileged socket ioctl commands
53neverallowxperm hal_drm_server domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls;
54