1 /* Copyright (C) 1995-1999, 2000, 2002 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 #ifndef _SYS_SHM_H 20 #define _SYS_SHM_H 1 21 22 #include <features.h> 23 24 #define __need_size_t 25 #include <stddef.h> 26 27 /* Get common definition of System V style IPC. */ 28 #include <sys/ipc.h> 29 30 /* Get system dependent definition of `struct shmid_ds' and more. */ 31 #include <bits/shm.h> 32 33 /* Define types required by the standard. */ 34 #define __need_time_t 35 #include <time.h> 36 37 #ifdef __USE_XOPEN 38 # ifndef __pid_t_defined 39 typedef __pid_t pid_t; 40 # define __pid_t_defined 41 # endif 42 #endif /* X/Open */ 43 44 45 __BEGIN_DECLS 46 47 /* The following System V style IPC functions implement a shared memory 48 facility. The definition is found in XPG4.2. */ 49 50 /* Shared memory control operation. */ 51 extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW; 52 53 /* Get shared memory segment. */ 54 extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW; 55 56 /* Attach shared memory segment. */ 57 extern void *shmat (int __shmid, __const void *__shmaddr, int __shmflg) 58 __THROW; 59 60 /* Detach shared memory segment. */ 61 extern int shmdt (__const void *__shmaddr) __THROW; 62 63 __END_DECLS 64 65 #endif /* sys/shm.h */ 66