diff options
| author | Thomas Hellstrom <thellstrom@vmware.com> | 2017-03-27 12:21:25 +0300 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2017-03-30 12:43:39 +0300 |
| commit | fe25deb7737ce6c0879ccf79c99fa1221d428bf2 (patch) | |
| tree | 8e5091f95dc74616cb5aab8560f8a0b7d1b8e577 /include/drm | |
| parent | 63774069d9527a1aeaa4aa20e929ef5e8e9ecc38 (diff) | |
| download | linux-fe25deb7737ce6c0879ccf79c99fa1221d428bf2.tar.xz | |
drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces
Previously, when a surface was opened using a legacy (non prime) handle,
it was verified to have been created by a client in the same master realm.
Relax this so that opening is also allowed recursively if the client
already has the surface open.
This works around a regression in svga mesa where opening of a shared
surface is used recursively to obtain surface information.
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/ttm/ttm_object.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/drm/ttm/ttm_object.h b/include/drm/ttm/ttm_object.h index ed953f98f0e1..1487011fe057 100644 --- a/include/drm/ttm/ttm_object.h +++ b/include/drm/ttm/ttm_object.h @@ -229,6 +229,8 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base); * @ref_type: The type of reference. * @existed: Upon completion, indicates that an identical reference object * already existed, and the refcount was upped on that object instead. + * @require_existed: Fail with -EPERM if an identical ref object didn't + * already exist. * * Checks that the base object is shareable and adds a ref object to it. * @@ -243,7 +245,8 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base); */ extern int ttm_ref_object_add(struct ttm_object_file *tfile, struct ttm_base_object *base, - enum ttm_ref_type ref_type, bool *existed); + enum ttm_ref_type ref_type, bool *existed, + bool require_existed); extern bool ttm_ref_object_exists(struct ttm_object_file *tfile, struct ttm_base_object *base); |