4 #include <linux/list.h>
6 #include <uapi/linux/shm.h>
7 #include <asm/shmparam.h>
9 struct shmid_kernel /* private to the kernel */
11 struct kern_ipc_perm shm_perm;
12 struct file *shm_file;
13 unsigned long shm_nattch;
14 unsigned long shm_segsz;
20 struct user_struct *mlock_user;
22 /* The task created the shm object. NULL if the task is dead. */
23 struct task_struct *shm_creator;
24 struct list_head shm_clist; /* list by creator */
27 /* shm_mode upper byte flags */
28 #define SHM_DEST 01000 /* segment will be destroyed on last detach */
29 #define SHM_LOCKED 02000 /* segment will not be swapped */
33 struct list_head shm_clist;
36 long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr,
37 unsigned long shmlba);
38 bool is_file_shm_hugepages(struct file *file);
39 void exit_shm(struct task_struct *task);
40 #define shm_init_task(task) INIT_LIST_HEAD(&(task)->sysvshm.shm_clist)
46 static inline long do_shmat(int shmid, char __user *shmaddr,
47 int shmflg, unsigned long *addr,
52 static inline bool is_file_shm_hugepages(struct file *file)
56 static inline void exit_shm(struct task_struct *task)
59 static inline void shm_init_task(struct task_struct *task)
64 #endif /* _LINUX_SHM_H_ */