57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _SYS_SHM_H
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#define _SYS_SHM_H 1
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#include <features.h>
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#include <unistd.h> /* for `getpagesize' declaration */
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#include <sys/types.h>
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/* Get common definition of System V style IPC. */
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#include <sys/ipc.h>
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/* Get system dependent definition of `struct shmid_ds' and more. */
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#include <bits/shm.h>
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/* Segment low boundary address multiple. */
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#define SHMLBA getpagesize ()
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/* The following System V style IPC functions implement a shared memory
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facility. The definition is found in XPG4.2. */
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__BEGIN_DECLS
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/* Shared memory control operation. */
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extern int shmctl __P ((int __shmid, int __cmd, struct shmid_ds *__buf));
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/* Get shared memory segment. */
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extern int shmget __P ((key_t __key, int __size, int __shmflg));
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/* Attach shared memory segment. */
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extern void *shmat __P ((int __shmid, __const void *__shmaddr, int __shmflg));
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/* Detach shared memory segment. */
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extern int shmdt __P ((__const void *__shmaddr));
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__END_DECLS
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#endif /* sys/shm.h */
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