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 10 struct file_operations; 11 struct inode; 12 struct module; 13 14 struct 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 23 void cdev_init(struct cdev *, const struct file_operations *); 24 25 struct cdev *cdev_alloc(void); 26 27 void cdev_put(struct cdev *p); 28 29 int cdev_add(struct cdev *, dev_t, unsigned); 30 31 void cdev_set_parent(struct cdev *p, struct kobject *kobj); 32 int cdev_device_add(struct cdev *cdev, struct device *dev); 33 void cdev_device_del(struct cdev *cdev, struct device *dev); 34 35 void cdev_del(struct cdev *); 36 37 void cd_forget(struct inode *); 38 39 #endif 40