LXR linux/include/linux/sem.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LINUX_SEM_H
   3#define _LINUX_SEM_H
   4
   5#include <uapi/linux/sem.h>
   6
   7struct task_struct;
   8struct sem_undo_list;
   9
  10#ifdef CONFIG_SYSVIPC
  11
  12struct sysv_sem {
  13        struct sem_undo_list *undo_list;
  14};
  15
  16extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
  17extern void exit_sem(struct task_struct *tsk);
  18
  19#else
  20
  21struct sysv_sem {
  22        /* empty */
  23};
  24
  25static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
  26{
  27        return 0;
  28}
  29
  30static inline void exit_sem(struct task_struct *tsk)
  31{
  32        return;
  33}
  34#endif
  35
  36#endif /* _LINUX_SEM_H */
  37