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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>
This commit is contained in:
Thomas Hellstrom 2015-07-10 22:31:08 -07:00
parent 05c9501859
commit 5101020c78
2 changed files with 3 additions and 1 deletions
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3
drivers/gpu/drm/drm_ioctl.c
View File

@ -480,7 +480,7 @@ static int drm_version(struct drm_device *dev, void *data,
* indicated permissions. If so, returns zero. Otherwise returns an * indicated permissions. If so, returns zero. Otherwise returns an
* error code suitable for ioctl return. * 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 */ /* ROOT_ONLY is only for CAP_SYS_ADMIN */
if (unlikely((flags & DRM_ROOT_ONLY) && !capable(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; return 0;
} }
EXPORT_SYMBOL(drm_ioctl_permit);
#define DRM_IOCTL_DEF(ioctl, _func, _flags) \ #define DRM_IOCTL_DEF(ioctl, _func, _flags) \
[DRM_IOCTL_NR(ioctl)] = { \ [DRM_IOCTL_NR(ioctl)] = { \

1
include/drm/drmP.h
View File

@ -887,6 +887,7 @@ static inline bool drm_is_primary_client(const struct drm_file *file_priv)
/*@{*/ /*@{*/
/* Driver support (drm_drv.h) */ /* Driver support (drm_drv.h) */
extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
extern long drm_ioctl(struct file *filp, extern long drm_ioctl(struct file *filp,
unsigned int cmd, unsigned long arg); unsigned int cmd, unsigned long arg);
extern long drm_compat_ioctl(struct file *filp, extern long drm_compat_ioctl(struct file *filp,