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authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-04-26 20:29:37 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-04-27 11:05:54 +0300
commite975eef07cbca53691f504318609bb95c7e5f1ac (patch)
treeabcda5fb47fba8b852b0ee08c4ddea87b37fbe5e /drivers/gpu/drm/drm_bufs.c
parent0d787b143d83de94decb801701a005ffd3ec6823 (diff)
downloadlinux-e975eef07cbca53691f504318609bb95c7e5f1ac.tar.xz
drm: Forbid legacy MAP functions for DRIVER_MODESET
Like in commit 0e975980d435d58df2d430d688b8c18778b42218 Author: Peter Antoine <peter.antoine@intel.com> Date: Tue Jun 23 08:18:49 2015 +0100 drm: Turn off Legacy Context Functions we need to again make an exception for nouveau, but everyone else really doesn't need this. Dave Airlie dug out again why we need this: The problem is the legacy dri1 open function the nouveau ddx called, and the problematic code is actually in the X server itself. It was only fixed in commit b1a630b48210d6a3c44994fce1b73273000ace5c Author: Dave Airlie <airlied@redhat.com> Date: Wed Nov 7 14:45:14 2012 +1000 nouveau: drop DRI1 device open interface. Cc: Peter Antoine <peter.antoine@intel.com> Cc: Ben Skeggs <bskeggs@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1461691808-12414-5-git-send-email-daniel.vetter@ffwll.ch Link: http://patchwork.freedesktop.org/patch/msgid/1461691808-12414-6-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/drm_bufs.c')
-rw-r--r--drivers/gpu/drm/drm_bufs.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index d92db7007f62..e8a12a4fd400 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -396,6 +396,10 @@ int drm_legacy_addmap_ioctl(struct drm_device *dev, void *data,
if (!(capable(CAP_SYS_ADMIN) || map->type == _DRM_AGP || map->type == _DRM_SHM))
return -EPERM;
+ if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) &&
+ drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
err = drm_addmap_core(dev, map->offset, map->size, map->type,
map->flags, &maplist);
@@ -438,6 +442,10 @@ int drm_legacy_getmap_ioctl(struct drm_device *dev, void *data,
int idx;
int i;
+ if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) &&
+ drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
idx = map->offset;
if (idx < 0)
return -EINVAL;
@@ -569,6 +577,10 @@ int drm_legacy_rmmap_ioctl(struct drm_device *dev, void *data,
struct drm_map_list *r_list;
int ret;
+ if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) &&
+ drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
mutex_lock(&dev->struct_mutex);
list_for_each_entry(r_list, &dev->maplist, head) {
if (r_list->map &&