xref: /illumos-gate/usr/src/head/errno.h (revision be4e997e05c92f444c81d2d197b79e67ebee2786)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright 1999-2003 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 
32 #ifndef _ERRNO_H
33 #define	_ERRNO_H
34 
35 /*
36  * Error codes
37  */
38 
39 #include <sys/errno.h>
40 
41 #ifdef	__cplusplus
42 extern "C" {
43 #endif
44 
45 #if defined(_LP64)
46 /*
47  * The symbols _sys_errlist and _sys_nerr are not visible in the
48  * LP64 libc.  Use strerror(3C) instead.
49  */
50 #endif /* _LP64 */
51 
52 #if defined(_REENTRANT) || defined(_TS_ERRNO) || _POSIX_C_SOURCE - 0 >= 199506L
53 extern int *___errno();
54 #define	errno (*(___errno()))
55 #else
56 extern int errno;
57 /* ANSI C++ requires that errno be a macro */
58 #if __cplusplus >= 199711L
59 #define	errno errno
60 #endif
61 #endif	/* defined(_REENTRANT) || defined(_TS_ERRNO) */
62 
63 #ifdef	__cplusplus
64 }
65 #endif
66 
67 #endif	/* _ERRNO_H */
68