Annotation of sys/sys/ipc.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ipc.h,v 1.10 2004/07/15 11:24:46 millert Exp $ */
! 2: /* $NetBSD: ipc.h,v 1.15 1996/02/09 18:25:12 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1988 University of Utah.
! 6: * Copyright (c) 1990, 1993
! 7: * The Regents of the University of California. All rights reserved.
! 8: * (c) UNIX System Laboratories, Inc.
! 9: * All or some portions of this file are derived from material licensed
! 10: * to the University of California by American Telephone and Telegraph
! 11: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
! 12: * the permission of UNIX System Laboratories, Inc.
! 13: *
! 14: * This code is derived from software contributed to Berkeley by
! 15: * the Systems Programming Group of the University of Utah Computer
! 16: * Science Department.
! 17: *
! 18: * Redistribution and use in source and binary forms, with or without
! 19: * modification, are permitted provided that the following conditions
! 20: * are met:
! 21: * 1. Redistributions of source code must retain the above copyright
! 22: * notice, this list of conditions and the following disclaimer.
! 23: * 2. Redistributions in binary form must reproduce the above copyright
! 24: * notice, this list of conditions and the following disclaimer in the
! 25: * documentation and/or other materials provided with the distribution.
! 26: * 3. Neither the name of the University nor the names of its contributors
! 27: * may be used to endorse or promote products derived from this software
! 28: * without specific prior written permission.
! 29: *
! 30: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 31: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 32: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 33: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 34: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 35: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 36: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 37: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 38: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 39: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 40: * SUCH DAMAGE.
! 41: *
! 42: * @(#)ipc.h 8.3 (Berkeley) 1/21/94
! 43: */
! 44:
! 45: /*
! 46: * SVID compatible ipc.h file
! 47: */
! 48: #ifndef _SYS_IPC_H_
! 49: #define _SYS_IPC_H_
! 50:
! 51: struct ipc_perm {
! 52: uid_t cuid; /* creator user id */
! 53: gid_t cgid; /* creator group id */
! 54: uid_t uid; /* user id */
! 55: gid_t gid; /* group id */
! 56: mode_t mode; /* r/w permission */
! 57: unsigned short seq; /* sequence # (to generate unique msg/sem/shm id) */
! 58: key_t key; /* user specified msg/sem/shm key */
! 59: };
! 60:
! 61: #ifdef _KERNEL
! 62: struct ipc_perm23 {
! 63: unsigned short cuid; /* creator user id */
! 64: unsigned short cgid; /* creator group id */
! 65: unsigned short uid; /* user id */
! 66: unsigned short gid; /* group id */
! 67: unsigned short mode; /* r/w permission */
! 68: unsigned short seq; /* sequence # (to generate unique msg/sem/shm id) */
! 69: key_t key; /* user specified msg/sem/shm key */
! 70: };
! 71:
! 72: struct ipc_perm35 {
! 73: uid_t cuid; /* creator user id */
! 74: gid_t cgid; /* creator group id */
! 75: uid_t uid; /* user id */
! 76: gid_t gid; /* group id */
! 77: u_int16_t mode; /* r/w permission */
! 78: unsigned short seq; /* sequence # (to generate unique msg/sem/shm id) */
! 79: key_t key; /* user specified msg/sem/shm key */
! 80: };
! 81: #endif
! 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: int ipcperm(struct ucred *, struct ipc_perm *, int);
! 106:
! 107: #else /* !_KERNEL */
! 108:
! 109: #include <sys/cdefs.h>
! 110:
! 111: __BEGIN_DECLS
! 112: key_t ftok(const char *, int);
! 113: __END_DECLS
! 114: #endif
! 115: #endif /* !_SYS_IPC_H_ */
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