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drm: Add a function to get the ioctl flags

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Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Thomas Hellstrom 2014-02-26 15:51:57 +01:00
parent c996fd0b95
commit 4beb6d9fa6
2 changed files with 19 additions and 0 deletions
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18
drivers/gpu/drm/drm_drv.c
View File

@ -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);

1
include/drm/drmP.h
View File

@ -1229,6 +1229,7 @@ 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;