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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SHM_H_
#define _LINUX_SHM_H_
#include <linux/types.h>
#include <asm/page.h>
#include <asm/shmparam.h>
struct file;
struct task_struct;
#ifdef CONFIG_SYSVIPC
struct sysv_shm {
struct list_head shm_clist;
};
long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr,
unsigned long shmlba);
bool is_file_shm_hugepages(struct file *file);
void exit_shm(struct task_struct *task);
#define shm_init_task(task) INIT_LIST_HEAD(&(task)->sysvshm.shm_clist)
#else
struct sysv_shm {
/* empty */
};
static inline long do_shmat(int shmid, char __user *shmaddr,
int shmflg, unsigned long *addr,
unsigned long shmlba)
{
return -ENOSYS;
}
static inline bool is_file_shm_hugepages(struct file *file)
{
return false;
}
static inline void exit_shm(struct task_struct *task)
{
}
static inline void shm_init_task(struct task_struct *task)
{
}
#endif
#endif /* _LINUX_SHM_H_ */