1 /* Copyright (C) 1995-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
26 /* Get common definition of System V style IPC. */
29 /* Get system dependent definition of `struct shmid_ds' and more. */
32 /* Define types required by the standard. */
33 #include <bits/types/time_t.h>
36 # ifndef __pid_t_defined
37 typedef __pid_t pid_t
;
38 # define __pid_t_defined
45 /* The following System V style IPC functions implement a shared memory
46 facility. The definition is found in XPG4.2. */
48 /* Shared memory control operation. */
49 #ifndef __USE_TIME_BITS64
50 extern int shmctl (int __shmid
, int __cmd
, struct shmid_ds
*__buf
) __THROW
;
52 # ifdef __REDIRECT_NTH
53 extern int __REDIRECT_NTH (shmctl
,
54 (int __shmid
, int __cmd
, struct shmid_ds
*__buf
),
57 # define shmctl __shmctl64
61 /* Get shared memory segment. */
62 extern int shmget (key_t __key
, size_t __size
, int __shmflg
) __THROW
;
64 /* Attach shared memory segment. */
65 extern void *shmat (int __shmid
, const void *__shmaddr
, int __shmflg
)
68 /* Detach shared memory segment. */
69 extern int shmdt (const void *__shmaddr
) __THROW
;
73 #endif /* sys/shm.h */