Adds GPU sepolicy to support devices with DRM gralloc/rendering
... such as Cuttlefish (Cloud Android virtual device) which has a
DRM virtio-gpu based gralloc and (sometimes) DRM virtio-gpu based
rendering (when forwarding rendering commands to the host machine
with Mesa3D in the guest and virglrenderer on the host).
After this change is submitted, changes such as aosp/1997572 can
be submitted to removed sepolicy that is currently duplicated
across device/google/cuttlefish and device/linaro/dragonboard as
well.
Adds a sysfs_gpu type (existing replicated sysfs_gpu definitions
across several devices are removed in the attached topic). The
uses of `sysfs_gpu:file` comes from Mesa using libdrm's
`drmGetDevices2()` which calls into `drmParsePciDeviceInfo()` to
get vendor id, device id, version etc.
Bug: b/161819018
Test: launch_cvd
Test: launch_cvd --gpu_mode=gfxstream
Change-Id: I4f7d4b0fb90bfeef72f94396ff0c5fe44d53510c
Merged-In: I4f7d4b0fb90bfeef72f94396ff0c5fe44d53510c
diff --git a/private/adbd.te b/private/adbd.te
index c5c5cc2..48fa849 100644
--- a/private/adbd.te
+++ b/private/adbd.te
@@ -129,6 +129,7 @@
binder_call(adbd, gpuservice)
# b/13188914
allow adbd gpu_device:chr_file rw_file_perms;
+allow adbd gpu_device:dir r_dir_perms;
allow adbd ion_device:chr_file rw_file_perms;
r_dir_file(adbd, system_file)
diff --git a/private/app.te b/private/app.te
index 436af5a..5570544 100644
--- a/private/app.te
+++ b/private/app.te
@@ -302,6 +302,9 @@
# Grant GPU access to all processes started by Zygote.
# They need that to render the standard UI.
allow { appdomain -isolated_app } gpu_device:chr_file rw_file_perms;
+allow { appdomain -isolated_app } gpu_device:dir r_dir_perms;
+allow { appdomain -isolated_app } sysfs_gpu:file r_file_perms;
+
# Use the Binder.
binder_use(appdomain)
diff --git a/private/bluetooth.te b/private/bluetooth.te
index 0c02de3..d548e80 100644
--- a/private/bluetooth.te
+++ b/private/bluetooth.te
@@ -36,6 +36,9 @@
# allow Bluetooth to access uhid device for HID profile
allow bluetooth uhid_device:chr_file rw_file_perms;
+allow bluetooth gpu_device:chr_file rw_file_perms;
+allow bluetooth gpu_device:dir r_dir_perms;
+
# proc access.
allow bluetooth proc_bluetooth_writable:file rw_file_perms;
diff --git a/private/cameraserver.te b/private/cameraserver.te
index 2be3c9e..96d7dbd 100644
--- a/private/cameraserver.te
+++ b/private/cameraserver.te
@@ -4,3 +4,6 @@
init_daemon_domain(cameraserver)
tmpfs_domain(cameraserver)
+
+allow cameraserver gpu_device:chr_file rw_file_perms;
+allow cameraserver gpu_device:dir r_dir_perms;
diff --git a/private/compat/32.0/32.0.ignore.cil b/private/compat/32.0/32.0.ignore.cil
index 58dba59..41d3e56 100644
--- a/private/compat/32.0/32.0.ignore.cil
+++ b/private/compat/32.0/32.0.ignore.cil
@@ -65,6 +65,7 @@
smart_idle_maint_enabled_prop
snapuserd_proxy_socket
sysfs_fs_fuse_bpf
+ sysfs_gpu
sysfs_lru_gen_enabled
system_dlkm_file
tare_service
diff --git a/private/genfs_contexts b/private/genfs_contexts
index 2f1f84d..1c604fc 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -123,6 +123,7 @@
genfscon sysfs /devices/system/cpu u:object_r:sysfs_devices_system_cpu:s0
genfscon sysfs /class/android_usb u:object_r:sysfs_android_usb:s0
genfscon sysfs /class/extcon u:object_r:sysfs_extcon:s0
+genfscon sysfs /class/gpu u:object_r:sysfs_gpu:s0
genfscon sysfs /class/leds u:object_r:sysfs_leds:s0
genfscon sysfs /class/net u:object_r:sysfs_net:s0
genfscon sysfs /class/rfkill/rfkill0/state u:object_r:sysfs_bluetooth_writable:s0
diff --git a/private/mediaprovider_app.te b/private/mediaprovider_app.te
index 630183e..a9a52bb 100644
--- a/private/mediaprovider_app.te
+++ b/private/mediaprovider_app.te
@@ -59,7 +59,8 @@
get_prop(mediaprovider_app, drm_service_config_prop)
-allow mediaprovider_app gpu_device:dir search;
+allow mediaprovider_app gpu_device:chr_file rw_file_perms;
+allow mediaprovider_app gpu_device:dir r_dir_perms;
dontaudit mediaprovider_app sysfs_vendor_sched:dir search;
dontaudit mediaprovider_app sysfs_vendor_sched:file w_file_perms;
diff --git a/private/mediatranscoding.te b/private/mediatranscoding.te
index 817416d..829d948 100644
--- a/private/mediatranscoding.te
+++ b/private/mediatranscoding.te
@@ -42,7 +42,8 @@
# Allow mediatranscoding to access the DMA-BUF system heap
allow mediatranscoding dmabuf_system_heap_device:chr_file r_file_perms;
-allow mediatranscoding gpu_device:dir search;
+allow mediatranscoding gpu_device:chr_file rw_file_perms;
+allow mediatranscoding gpu_device:dir r_dir_perms;
# Allow mediatranscoding service to access media-related system properties
get_prop(mediatranscoding, media_config_prop)
diff --git a/private/surfaceflinger.te b/private/surfaceflinger.te
index 5223b50..123fc69 100644
--- a/private/surfaceflinger.te
+++ b/private/surfaceflinger.te
@@ -38,6 +38,8 @@
# Access the GPU.
allow surfaceflinger gpu_device:chr_file rw_file_perms;
+allow surfaceflinger gpu_device:dir r_dir_perms;
+allow surfaceflinger sysfs_gpu:file r_file_perms;
# Access /dev/graphics/fb0.
allow surfaceflinger graphics_device:dir search;
diff --git a/private/system_server.te b/private/system_server.te
index 8fc032f..927ef10 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -451,6 +451,8 @@
allow system_server device:dir r_dir_perms;
allow system_server mdns_socket:sock_file rw_file_perms;
allow system_server gpu_device:chr_file rw_file_perms;
+allow system_server gpu_device:dir r_dir_perms;
+allow system_server sysfs_gpu:file r_file_perms;
allow system_server input_device:dir r_dir_perms;
allow system_server input_device:chr_file rw_file_perms;
allow system_server tty_device:chr_file rw_file_perms;