96 lines
3.6 KiB
C
96 lines
3.6 KiB
C
/* $OpenBSD: ipc.h,v 1.13 2014/11/15 21:42:50 guenther Exp $ */
|
|
/* $NetBSD: ipc.h,v 1.15 1996/02/09 18:25:12 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* (c) UNIX System Laboratories, Inc.
|
|
* All or some portions of this file are derived from material licensed
|
|
* to the University of California by American Telephone and Telegraph
|
|
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
|
|
* the permission of UNIX System Laboratories, Inc.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department.
|
|
*
|
|
* 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. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
*
|
|
* @(#)ipc.h 8.3 (Berkeley) 1/21/94
|
|
*/
|
|
|
|
/*
|
|
* SVID compatible ipc.h file
|
|
*/
|
|
#ifndef _SYS_IPC_H_
|
|
#define _SYS_IPC_H_
|
|
|
|
#include <sys/types.h>
|
|
|
|
struct ipc_perm {
|
|
uid_t cuid; /* creator user id */
|
|
gid_t cgid; /* creator group id */
|
|
uid_t uid; /* user id */
|
|
gid_t gid; /* group id */
|
|
mode_t mode; /* r/w permission */
|
|
unsigned short seq; /* sequence # (to generate unique msg/sem/shm id) */
|
|
key_t key; /* user specified msg/sem/shm key */
|
|
};
|
|
|
|
/* common mode bits */
|
|
#define IPC_R 000400 /* read permission */
|
|
#define IPC_W 000200 /* write/alter permission */
|
|
#define IPC_M 010000 /* permission to change control info */
|
|
|
|
/* SVID required constants (same values as system 5) */
|
|
#define IPC_CREAT 001000 /* create entry if key does not exist */
|
|
#define IPC_EXCL 002000 /* fail if key exists */
|
|
#define IPC_NOWAIT 004000 /* error if request must wait */
|
|
|
|
#define IPC_PRIVATE (key_t)0 /* private key */
|
|
|
|
#define IPC_RMID 0 /* remove identifier */
|
|
#define IPC_SET 1 /* set options */
|
|
#define IPC_STAT 2 /* get options */
|
|
|
|
#ifdef _KERNEL
|
|
/* Macros to convert between ipc ids and array indices or sequence ids */
|
|
#define IPCID_TO_IX(id) ((id) & 0xffff)
|
|
#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
|
|
#define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff))
|
|
|
|
struct ucred;
|
|
|
|
int ipcperm(struct ucred *, struct ipc_perm *, int);
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
__BEGIN_DECLS
|
|
key_t ftok(const char *, int);
|
|
__END_DECLS
|
|
#endif
|
|
#endif /* !_SYS_IPC_H_ */
|