Return to ipc.h CVS log

Up to [Apple XNU] / XNU / bsd / sys

Annotation of XNU/bsd/sys/ipc.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * Copyright (c) 1988 University of Utah.
        !            24:  * Copyright (c) 1990, 1993
        !            25:  *     The Regents of the University of California.  All rights reserved.
        !            26:  * (c) UNIX System Laboratories, Inc.
        !            27:  * All or some portions of this file are derived from material licensed
        !            28:  * to the University of California by American Telephone and Telegraph
        !            29:  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
        !            30:  * the permission of UNIX System Laboratories, Inc.
        !            31:  *
        !            32:  * This code is derived from software contributed to Berkeley by
        !            33:  * the Systems Programming Group of the University of Utah Computer
        !            34:  * Science Department.
        !            35:  *
        !            36:  * Redistribution and use in source and binary forms, with or without
        !            37:  * modification, are permitted provided that the following conditions
        !            38:  * are met:
        !            39:  * 1. Redistributions of source code must retain the above copyright
        !            40:  *    notice, this list of conditions and the following disclaimer.
        !            41:  * 2. Redistributions in binary form must reproduce the above copyright
        !            42:  *    notice, this list of conditions and the following disclaimer in the
        !            43:  *    documentation and/or other materials provided with the distribution.
        !            44:  * 3. All advertising materials mentioning features or use of this software
        !            45:  *    must display the following acknowledgement:
        !            46:  *     This product includes software developed by the University of
        !            47:  *     California, Berkeley and its contributors.
        !            48:  * 4. Neither the name of the University nor the names of its contributors
        !            49:  *    may be used to endorse or promote products derived from this software
        !            50:  *    without specific prior written permission.
        !            51:  *
        !            52:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            53:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            54:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            55:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            56:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            57:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            58:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            59:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            60:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            61:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            62:  * SUCH DAMAGE.
        !            63:  *
        !            64:  *     @(#)ipc.h       8.4 (Berkeley) 2/19/95
        !            65:  */
        !            66: 
        !            67: /*
        !            68:  * SVID compatible ipc.h file
        !            69:  */
        !            70: #ifndef _SYS_IPC_H_
        !            71: #define _SYS_IPC_H_
        !            72: 
        !            73: struct ipc_perm {
        !            74:        ushort  cuid;   /* creator user id */
        !            75:        ushort  cgid;   /* creator group id */
        !            76:        ushort  uid;    /* user id */
        !            77:        ushort  gid;    /* group id */
        !            78:        ushort  mode;   /* r/w permission */
        !            79:        ushort  seq;    /* sequence # (to generate unique msg/sem/shm id) */
        !            80:        key_t   key;    /* user specified msg/sem/shm key */
        !            81: };
        !            82: 
        !            83: /* common mode bits */
        !            84: #define        IPC_R           000400  /* read permission */
        !            85: #define        IPC_W           000200  /* write/alter permission */
        !            86: #define        IPC_M           010000  /* permission to change control info */
        !            87: 
        !            88: /* SVID required constants (same values as system 5) */
        !            89: #define        IPC_CREAT       001000  /* create entry if key does not exist */
        !            90: #define        IPC_EXCL        002000  /* fail if key exists */
        !            91: #define        IPC_NOWAIT      004000  /* error if request must wait */
        !            92: 
        !            93: #define        IPC_PRIVATE     (key_t)0 /* private key */
        !            94: 
        !            95: #define        IPC_RMID        0       /* remove identifier */
        !            96: #define        IPC_SET         1       /* set options */
        !            97: #define        IPC_STAT        2       /* get options */
        !            98: 
        !            99: #ifdef KERNEL
        !           100: /* Macros to convert between ipc ids and array indices or sequence ids */
        !           101: #define        IPCID_TO_IX(id)         ((id) & 0xffff)
        !           102: #define        IPCID_TO_SEQ(id)        (((id) >> 16) & 0xffff)
        !           103: #define        IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff))
        !           104: 
        !           105: struct ucred;
        !           106: 
        !           107: int    ipcperm __P((struct ucred *, struct ipc_perm *, int));
        !           108: #else /* ! KERNEL */
        !           109: 
        !           110: /* XXX doesn't really belong here, but has been historical practice in SysV. */
        !           111: 
        !           112: #include <sys/cdefs.h>
        !           113: 
        !           114: __BEGIN_DECLS
        !           115: key_t  ftok __P((const char *, int));
        !           116: __END_DECLS
        !           117: 
        !           118: #endif /* KERNEL */
        !           119: 
        !           120: #endif /* !_SYS_IPC_H_ */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.