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