drm: export the DRM permission check code

This way drm_ioctl_permit() can be used by drivers

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index b1d303fa2327..9a860ca1e9d7 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -480,7 +480,7 @@ static int drm_version(struct drm_device *dev, void *data,
  * indicated permissions. If so, returns zero. Otherwise returns an
  * error code suitable for ioctl return.
  */
-static int drm_ioctl_permit(u32 flags, struct drm_file *file_priv)
+int drm_ioctl_permit(u32 flags, struct drm_file *file_priv)
 {
         /* ROOT_ONLY is only for CAP_SYS_ADMIN */
         if (unlikely((flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)))
@@ -508,6 +508,7 @@ static int drm_ioctl_permit(u32 flags, struct drm_file *file_priv)
 
         return 0;
 }
+EXPORT_SYMBOL(drm_ioctl_permit);
 
 #define DRM_IOCTL_DEF(ioctl, _func, _flags)     \
         [DRM_IOCTL_NR(ioctl)] = {               \
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 4717449d6aa9..3b0c50f7412a 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -887,6 +887,7 @@ static inline bool drm_is_primary_client(const struct drm_file *file_priv)
 /*@{*/
 
                                 /* Driver support (drm_drv.h) */
+extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
 extern long drm_ioctl(struct file *filp,
                       unsigned int cmd, unsigned long arg);
 extern long drm_compat_ioctl(struct file *filp,