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authorDave Airlie <airlied@redhat.com>2014-01-14 10:55:36 +1000
committerDave Airlie <airlied@redhat.com>2014-01-14 10:55:36 +1000
commitfaf096ffba2b1a4066e6d6dcd1243cc5f3d1fb23 (patch)
tree4793c625d9eaae10f453b8c4d32543de86875402 /include/drm
parenta095c60bd06f204c98527aafd5fda6ef42b53eb5 (diff)
parent94844cf06568d9592f985e4bd0b9d759a56043c6 (diff)
downloadlinux-linaro-stable-faf096ffba2b1a4066e6d6dcd1243cc5f3d1fb23.tar.gz
Merge tag 'vmwgfx-next-2014-01-13' of git://people.freedesktop.org/~thomash/linux into drm-next
Anyway, nothing big here, Three more code cleanup patches from Rashika Kheria, and one TTM/vmwgfx patch from me that tightens security around TTM objects enough for them to opened using prime objects from render nodes: Previously any client could access a shared buffer using the "name", also without actually opening it. Now a reference is required, and for render nodes such a reference is intended to only be obtainable using a prime fd. vmwgfx-next 2014-01-13 pull request * tag 'vmwgfx-next-2014-01-13' of git://people.freedesktop.org/~thomash/linux: drivers: gpu: Mark functions as static in vmwgfx_fence.c drivers: gpu: Mark functions as static in vmwgfx_buffer.c drivers: gpu: Mark functions as static in vmwgfx_kms.c drm/ttm: ttm object security fixes for render nodes
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/ttm/ttm_object.h18
1 files changed, 16 insertions, 2 deletions
diff --git a/include/drm/ttm/ttm_object.h b/include/drm/ttm/ttm_object.h
index 58b029894eb3..0097cc03034e 100644
--- a/include/drm/ttm/ttm_object.h
+++ b/include/drm/ttm/ttm_object.h
@@ -190,14 +190,26 @@ extern int ttm_base_object_init(struct ttm_object_file *tfile,
* @key: Hash key
*
* Looks up a struct ttm_base_object with the key @key.
- * Also verifies that the object is visible to the application, by
- * comparing the @tfile argument and checking the object shareable flag.
*/
extern struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file
*tfile, uint32_t key);
/**
+ * ttm_base_object_lookup_for_ref
+ *
+ * @tdev: Pointer to a struct ttm_object_device.
+ * @key: Hash key
+ *
+ * Looks up a struct ttm_base_object with the key @key.
+ * This function should only be used when the struct tfile associated with the
+ * caller doesn't yet have a reference to the base object.
+ */
+
+extern struct ttm_base_object *
+ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key);
+
+/**
* ttm_base_object_unref
*
* @p_base: Pointer to a pointer referencing a struct ttm_base_object.
@@ -218,6 +230,8 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base);
* @existed: Upon completion, indicates that an identical reference object
* already existed, and the refcount was upped on that object instead.
*
+ * Checks that the base object is shareable and adds a ref object to it.
+ *
* Adding a ref object to a base object is basically like referencing the
* base object, but a user-space application holds the reference. When the
* file corresponding to @tfile is closed, all its reference objects are