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581c785b 1/* Copyright (C) 1995-2022 Free Software Foundation, Inc.
8a4b65b4 2 This file is part of the GNU C Library.
60478656 3
8a4b65b4 4 The GNU C Library is free software; you can redistribute it and/or
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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.
60478656 8
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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
41bdb6e2 12 Lesser General Public License for more details.
60478656 13
41bdb6e2 14 You should have received a copy of the GNU Lesser General Public
59ba27a6 15 License along with the GNU C Library; if not, see
5a82c748 16 <https://www.gnu.org/licenses/>. */
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17
18#ifndef _SYS_SHM_H
8a4b65b4 19#define _SYS_SHM_H 1
5107cf1d 20
60478656 21#include <features.h>
8a4b65b4 22
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23#define __need_size_t
24#include <stddef.h>
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25
26/* Get common definition of System V style IPC. */
27#include <sys/ipc.h>
28
29/* Get system dependent definition of `struct shmid_ds' and more. */
5107cf1d 30#include <bits/shm.h>
60478656 31
0ed99ce4 32/* Define types required by the standard. */
05b68e14 33#include <bits/types/time_t.h>
0ed99ce4 34
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35#ifdef __USE_XOPEN
36# ifndef __pid_t_defined
37typedef __pid_t pid_t;
38# define __pid_t_defined
39# endif
40#endif /* X/Open */
60478656 41
219aa9e9 42
ed5294d5 43__BEGIN_DECLS
60478656 44
60478656 45/* The following System V style IPC functions implement a shared memory
3e5f5557 46 facility. The definition is found in XPG4.2. */
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47
48/* Shared memory control operation. */
47f24c21 49#ifndef __USE_TIME_BITS64
c1422e5b 50extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW;
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51#else
52# ifdef __REDIRECT_NTH
53extern int __REDIRECT_NTH (shmctl,
54 (int __shmid, int __cmd, struct shmid_ds *__buf),
55 __shmctl64);
56# else
57# define shmctl __shmctl64
58# endif
59#endif
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60
61/* Get shared memory segment. */
c1422e5b 62extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW;
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63
64/* Attach shared memory segment. */
a784e502 65extern void *shmat (int __shmid, const void *__shmaddr, int __shmflg)
c1422e5b 66 __THROW;
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67
68/* Detach shared memory segment. */
a784e502 69extern int shmdt (const void *__shmaddr) __THROW;
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70
71__END_DECLS
72
5107cf1d 73#endif /* sys/shm.h */