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TOMOYO Linux Cross Reference
Linux/include/linux/shm.h

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  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 

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