root/include/linux/sem.h

INCLUDED FROM

DEFINITIONS

1. copy_semundo
2. exit_sem

   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 
   7 struct task_struct;
   8 struct sem_undo_list;
   9 
  10 #ifdef CONFIG_SYSVIPC
  11 
  12 struct sysv_sem {
  13         struct sem_undo_list *undo_list;
  14 };
  15 
  16 extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
  17 extern void exit_sem(struct task_struct *tsk);
  18 
  19 #else
  20 
  21 struct sysv_sem {
  22         /* empty */
  23 };
  24 
  25 static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
  26 {
  27         return 0;
  28 }
  29 
  30 static inline void exit_sem(struct task_struct *tsk)
  31 {
  32         return;
  33 }
  34 #endif
  35 
  36 #endif /* _LINUX_SEM_H */