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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /* $NetBSD: shm.h,v 1.15 1994/06/29 06:45:17 cgd Exp $ */
-
- /*
- * Copyright (c) 1994 Adam Glass
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Adam Glass.
- * 4. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- /*
- * As defined+described in "X/Open System Interfaces and Headers"
- * Issue 4, p. XXX
- */
-
- #ifndef _SYS_SHM_H_
- #define _SYS_SHM_H_
-
- #include <sys/param.h>
- #include <sys/ipc.h>
-
- #define SHM_RDONLY 010000 /* Attach read-only (else read-write) */
- #define SHM_RND 020000 /* Round attach address to SHMLBA */
- #define SHMLBA NBPG /* Segment low boundary address multiple */
-
- /* "official" access mode definitions; somewhat braindead since you have
- to specify (SHM_* >> 3) for group and (SHM_* >> 6) for world permissions */
- #define SHM_R (IPC_R)
- #define SHM_W (IPC_W)
-
-
- struct shmid_ds {
- struct ipc_perm shm_perm; /* operation permission structure */
- int shm_segsz; /* size of segment in bytes */
- pid_t shm_lpid; /* process ID of last shared memory op */
- pid_t shm_cpid; /* process ID of creator */
- short shm_nattch; /* number of current attaches */
- time_t shm_atime; /* time of last shmat() */
- time_t shm_dtime; /* time of last shmdt() */
- time_t shm_ctime; /* time of last change by shmctl() */
- void *shm_internal; /* sysv stupidity */
- };
-
- #ifdef KERNEL
-
- /*
- * System 5 style catch-all structure for shared memory constants that
- * might be of interest to user programs. Do we really want/need this?
- */
- struct shminfo {
- int shmmax, /* max shared memory segment size (bytes) */
- shmmin, /* min shared memory segment size (bytes) */
- shmmni, /* max number of shared memory identifiers */
- shmseg, /* max shared memory segments per process */
- shmall; /* max amount of shared memory (pages) */
- };
- extern struct shminfo shminfo;
- extern struct shmid_ds *shmsegs;
-
- struct proc;
-
- void shmexit __P((struct proc *));
- void shmfork __P((struct proc *, struct proc *));
- #else /* !KERNEL */
-
- #include <sys/cdefs.h>
-
- __BEGIN_DECLS
- int shmsys __P((int, ...));
- void *shmat __P((int, void *, int));
- int shmget __P((key_t, int, int));
- int shmctl __P((int, int, struct shmid_ds *));
- int shmdt __P((void *));
- __END_DECLS
-
- #endif /* !KERNEL */
-
- #endif /* !_SYS_SHM_H_ */
-