/* Copyright (C) 1995-2020 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #ifndef _SYS_SHM_H #define _SYS_SHM_H 1 #include <features.h> #define __need_size_t #include <stddef.h> /* Get common definition of System V style IPC. */ #include <sys/ipc.h> /* Get system dependent definition of `struct shmid_ds' and more. */ #include <bits/shm.h> /* Define types required by the standard. */ #include <bits/types/time_t.h> #ifdef __USE_XOPEN # ifndef __pid_t_defined typedef __pid_t pid_t; # define __pid_t_defined # endif #endif /* X/Open */ __BEGIN_DECLS /* The following System V style IPC functions implement a shared memory facility. The definition is found in XPG4.2. */ /* Shared memory control operation. */ extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW; /* Get shared memory segment. */ extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW; /* Attach shared memory segment. */ extern void *shmat (int __shmid, const void *__shmaddr, int __shmflg) __THROW; /* Detach shared memory segment. */ extern int shmdt (const void *__shmaddr) __THROW; __END_DECLS #endif /* sys/shm.h */