1 #ifndef _LINUX_CDEV_H 2 #define _LINUX_CDEV_H 3 #ifdef __KERNEL__ 4 5 #include <linux/kobject.h> 6 #include <linux/kdev_t.h> 7 #include <linux/list.h> 8 9 struct cdev { 10 struct kobject kobj; 11 struct module *owner; 12 const struct file_operations *ops; 13 struct list_head list; 14 dev_t dev; 15 unsigned int count; 16 }; 17 18 void cdev_init(struct cdev *, const struct file_operations *); 19 20 struct cdev *cdev_alloc(void); 21 22 void cdev_put(struct cdev *p); 23 24 int cdev_add(struct cdev *, dev_t, unsigned); 25 26 void cdev_del(struct cdev *); 27 28 void cd_forget(struct inode *); 29 30 extern struct backing_dev_info directly_mappable_cdev_bdi; 31 32 #endif 33 #endif 34