2 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for
3 .\" permission to reproduce portions of its copyrighted documentation.
4 .\" Original documentation from The Open Group can be obtained online at
5 .\" http://www.opengroup.org/bookstore/.
7 .\" The Institute of Electrical and Electronics Engineers and The Open
8 .\" Group, have given us permission to reprint portions of their
11 .\" In the following statement, the phrase ``this text'' refers to portions
12 .\" of the system documentation.
14 .\" Portions of this text are reprinted and reproduced in electronic form
15 .\" in the SunOS Reference Manual, from IEEE Std 1003.1, 2004 Edition,
16 .\" Standard for Information Technology -- Portable Operating System
17 .\" Interface (POSIX), The Open Group Base Specifications Issue 6,
18 .\" Copyright (C) 2001-2004 by the Institute of Electrical and Electronics
19 .\" Engineers, Inc and The Open Group. In the event of any discrepancy
20 .\" between these versions and the original IEEE and The Open Group
21 .\" Standard, the original IEEE and The Open Group Standard is the referee
22 .\" document. The original Standard can be obtained online at
23 .\" http://www.opengroup.org/unix/online.html.
25 .\" This notice shall appear on any product containing this material.
27 .\" The contents of this file are subject to the terms of the
28 .\" Common Development and Distribution License (the "License").
29 .\" You may not use this file except in compliance with the License.
31 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
32 .\" or http://www.opensolaris.org/os/licensing.
33 .\" See the License for the specific language governing permissions
34 .\" and limitations under the License.
36 .\" When distributing Covered Code, include this CDDL HEADER in each
37 .\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
38 .\" If applicable, add the following below this CDDL HEADER, with the
39 .\" fields enclosed by brackets "[]" replaced with your own identifying
40 .\" information: Portions Copyright [yyyy] [name of copyright owner]
43 .\" Copyright (c) 2001, The IEEE and The Open Group. All Rights Reserved.
44 .\" Portions Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved.
46 .TH IPC.H 3HEAD "Sep 10, 2004"
48 ipc.h, ipc \- XSI interprocess communication access structure
52 #include <\fBsys/ipc.h\fR>
58 The <\fBsys/ipc.h\fR> header is used by three mechanisms for interprocess
59 communication (IPC): messages, semaphores, and shared memory. All use a common
60 structure type, \fBipc_perm\fR, to pass information used in determining
61 permission to perform an IPC operation.
64 The \fBipc_perm\fR structure contains the following members:
68 uid_t uid /* owner's user ID */
69 gid_t gid /* owner's group ID */
70 uid_t cuid /* creator's user ID */
71 gid_t cgid /* creator's group ID */
72 mode_t mode /* read/write permission
78 The \fBuid_t\fR, \fBgid_t\fR, \fBmode_t\fR, and \fBkey_t\fR types are defined
79 as described in <\fBsys/types.h\fR>. See \fBtypes.h\fR(3HEAD).
82 Definitions are provided for the constants listed below.
92 Create entry if key does not exist.
107 \fB\fBIPC_NOWAIT\fR\fR
110 Error if request must wait.
119 \fB\fBIPC_PRIVATE\fR\fR
158 See \fBattributes\fR(5) for descriptions of the following attributes:
166 ATTRIBUTE TYPE ATTRIBUTE VALUE
168 Interface Stability Standard
174 \fBftok\fR(3C), \fBtypes.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)