drm: Add a function to get the ioctl flags
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com>
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@ -450,3 +450,21 @@ long drm_ioctl(struct file *filp,
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return retcode;
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}
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EXPORT_SYMBOL(drm_ioctl);
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/**
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* drm_ioctl_flags - Check for core ioctl and return ioctl permission flags
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*
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* @nr: Ioctl number.
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* @flags: Where to return the ioctl permission flags
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*/
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bool drm_ioctl_flags(unsigned int nr, unsigned int *flags)
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{
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if ((nr >= DRM_COMMAND_END && nr < DRM_CORE_IOCTL_COUNT) ||
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(nr < DRM_COMMAND_BASE)) {
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*flags = drm_ioctls[nr].flags;
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return true;
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}
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return false;
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}
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EXPORT_SYMBOL(drm_ioctl_flags);
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@ -1229,6 +1229,7 @@ extern long drm_ioctl(struct file *filp,
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extern long drm_compat_ioctl(struct file *filp,
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unsigned int cmd, unsigned long arg);
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extern int drm_lastclose(struct drm_device *dev);
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extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
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/* Device support (drm_fops.h) */
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extern struct mutex drm_global_mutex;
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