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Annotation of src/lib/libc/gen/_errno.c, Revision 1.13

1.13    ! martin      1: /*     $NetBSD: _errno.c,v 1.12 2005/06/12 05:21:27 lukem Exp $        */
1.1       jtc         2:
                      3: /*-
                      4:  * Copyright (c) 1996 The NetBSD Foundation, Inc.
                      5:  * All rights reserved.
                      6:  *
                      7:  * This code is derived from software contributed to The NetBSD Foundation
                      8:  * by J.T. Conklin.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  *
                     19:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     20:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     21:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.4       jtc        22:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     23:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1       jtc        24:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     25:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     26:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     27:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     28:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     29:  * POSSIBILITY OF SUCH DAMAGE.
                     30:  */
                     31:
1.12      lukem      32: #include <sys/cdefs.h>
                     33: #if defined(LIBC_SCCS) && !defined(lint)
1.13    ! martin     34: __RCSID("$NetBSD: _errno.c,v 1.12 2005/06/12 05:21:27 lukem Exp $");
1.12      lukem      35: #endif /* LIBC_SCCS and not lint */
                     36:
1.10      thorpej    37: #include "reentrant.h"
1.1       jtc        38: #include <errno.h>
1.10      thorpej    39: #include <stdlib.h>
1.1       jtc        40:
1.9       christos   41: #undef errno
                     42: extern int errno;
1.6       explorer   43:
1.1       jtc        44: int *
1.8       explorer   45: __errno(void)
1.1       jtc        46: {
1.10      thorpej    47: #ifdef _REENTRANT
                     48:        if (__isthreaded == 0)
                     49:                return &errno;
                     50:
                     51:        return thr_errno();
                     52: #else
1.1       jtc        53:        return &errno;
1.10      thorpej    54: #endif
1.1       jtc        55: }