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
10struct file;
 
11
12#ifdef CONFIG_SYSVIPC
13struct sysv_shm {
14	struct list_head shm_clist;
15};
16
17long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr,
18	      unsigned long shmlba);
19bool is_file_shm_hugepages(struct file *file);
20void exit_shm(struct task_struct *task);
21#define shm_init_task(task) INIT_LIST_HEAD(&(task)->sysvshm.shm_clist)
22#else
23struct sysv_shm {
24	/* empty */
25};
26
27static inline long do_shmat(int shmid, char __user *shmaddr,
28			    int shmflg, unsigned long *addr,
29			    unsigned long shmlba)
30{
31	return -ENOSYS;
32}
33static inline bool is_file_shm_hugepages(struct file *file)
34{
35	return false;
36}
37static inline void exit_shm(struct task_struct *task)
38{
39}
40static inline void shm_init_task(struct task_struct *task)
41{
42}
43#endif
44
45#endif /* _LINUX_SHM_H_ */

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