cdev.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_CDEV_H
 3#define _LINUX_CDEV_H
 4
 5#include <linux/kobject.h>
 6#include <linux/kdev_t.h>
 7#include <linux/list.h>
 8#include <linux/device.h>
 9
10struct file_operations;
11struct inode;
12struct module;
13
14struct cdev {
15	struct kobject kobj;
16	struct module *owner;
17	const struct file_operations *ops;
18	struct list_head list;
19	dev_t dev;
20	unsigned int count;
21} __randomize_layout;
22
23void cdev_init(struct cdev *, const struct file_operations *);
24
25struct cdev *cdev_alloc(void);
26
27void cdev_put(struct cdev *p);
28
29int cdev_add(struct cdev *, dev_t, unsigned);
30
31void cdev_set_parent(struct cdev *p, struct kobject *kobj);
32int cdev_device_add(struct cdev *cdev, struct device *dev);
33void cdev_device_del(struct cdev *cdev, struct device *dev);
34
35void cdev_del(struct cdev *);
36
37void cd_forget(struct inode *);
38
39#endif