1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_SHM_H_ |
3 | #define _LINUX_SHM_H_ |
4 | |
5 | #include <linux/list.h> |
6 | #include <asm/page.h> |
7 | #include <uapi/linux/shm.h> |
8 | #include <asm/shmparam.h> |
9 | |
10 | struct file; |
11 | |
12 | #ifdef CONFIG_SYSVIPC |
13 | struct sysv_shm { |
14 | struct list_head shm_clist; |
15 | }; |
16 | |
17 | long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr, |
18 | unsigned long shmlba); |
19 | bool is_file_shm_hugepages(struct file *file); |
20 | void exit_shm(struct task_struct *task); |
21 | #define shm_init_task(task) INIT_LIST_HEAD(&(task)->sysvshm.shm_clist) |
22 | #else |
23 | struct sysv_shm { |
24 | /* empty */ |
25 | }; |
26 | |
27 | static inline long do_shmat(int shmid, char __user *shmaddr, |
28 | int shmflg, unsigned long *addr, |
29 | unsigned long shmlba) |
30 | { |
31 | return -ENOSYS; |
32 | } |
33 | static inline bool is_file_shm_hugepages(struct file *file) |
34 | { |
35 | return false; |
36 | } |
37 | static inline void exit_shm(struct task_struct *task) |
38 | { |
39 | } |
40 | static inline void shm_init_task(struct task_struct *task) |
41 | { |
42 | } |
43 | #endif |
44 | |
45 | #endif /* _LINUX_SHM_H_ */ |
46 | |