Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
Reviewed-by: Brian Paul <brianp@xxxxxxxxxx>
---
drivers/gpu/drm/drm_drv.c | 18 ++++++++++++++++++
include/drm/drmP.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index cf2dfb7..03711d0 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -450,3 +450,21 @@ long drm_ioctl(struct file *filp,
return retcode;
}
EXPORT_SYMBOL(drm_ioctl);
+
+/**
+ * drm_ioctl_flags - Check for core ioctl and return ioctl permission flags
+ *
+ * @nr: Ioctl number.
+ * @flags: Where to return the ioctl permission flags
+ */
+bool drm_ioctl_flags(unsigned int nr, unsigned int *flags)
+{
+ if ((nr >= DRM_COMMAND_END && nr < DRM_CORE_IOCTL_COUNT) ||
+ (nr < DRM_COMMAND_BASE)) {
+ *flags = drm_ioctls[nr].flags;
+ return true;
+ }
+
+ return false;
+}
+EXPORT_SYMBOL(drm_ioctl_flags);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 2b387b0..df57ca5 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1259,6 +1259,7 @@ extern long drm_ioctl(struct file *filp,
extern long drm_compat_ioctl(struct file *filp,
unsigned int cmd, unsigned long arg);
extern int drm_lastclose(struct drm_device *dev);
+extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
/* Device support (drm_fops.h) */
extern struct mutex drm_global_mutex;
--
1.7.10.4
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