+struct video_device;
+struct v4l2_device;
+
+/* Flag to mark the video_device struct as unregistered.
+ Drivers can set this flag if they want to block all future
+ device access. It is set by video_unregister_device. */
+#define V4L2_FL_UNREGISTERED (0)
+
+struct v4l2_file_operations {
+ struct module *owner;
+ ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
+ ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
+ unsigned int (*poll) (struct file *, struct poll_table_struct *);
+ long (*ioctl) (struct file *, unsigned int, unsigned long);
+ long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
+ int (*mmap) (struct file *, struct vm_area_struct *);
+ int (*open) (struct file *);
+ int (*release) (struct file *);
+};