xref: /freebsd/lib/libthr/sys/thr_error.c (revision a091d823ad89a36935ba6e5568c4720a35f9a99b)
170d5093aSJeff Roberson /*
270d5093aSJeff Roberson  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
370d5093aSJeff Roberson  * Copyright (c) 1994 by Chris Provenzano, proven@mit.edu
470d5093aSJeff Roberson  * All rights reserved.
570d5093aSJeff Roberson  *
670d5093aSJeff Roberson  * Redistribution and use in source and binary forms, with or without
770d5093aSJeff Roberson  * modification, are permitted provided that the following conditions
870d5093aSJeff Roberson  * are met:
970d5093aSJeff Roberson  * 1. Redistributions of source code must retain the above copyright
1070d5093aSJeff Roberson  *    notice, this list of conditions and the following disclaimer.
1170d5093aSJeff Roberson  * 2. Redistributions in binary form must reproduce the above copyright
1270d5093aSJeff Roberson  *    notice, this list of conditions and the following disclaimer in the
1370d5093aSJeff Roberson  *    documentation and/or other materials provided with the distribution.
1470d5093aSJeff Roberson  * 3. All advertising materials mentioning features or use of this software
1570d5093aSJeff Roberson  *    must display the following acknowledgement:
1670d5093aSJeff Roberson  *	This product includes software developed by John Birrell
1770d5093aSJeff Roberson  *  and Chris Provenzano.
1870d5093aSJeff Roberson  * 4. Neither the name of the author nor the names of any co-contributors
1970d5093aSJeff Roberson  *    may be used to endorse or promote products derived from this software
2070d5093aSJeff Roberson  *    without specific prior written permission.
2170d5093aSJeff Roberson  *
2270d5093aSJeff Roberson  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
2370d5093aSJeff Roberson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2470d5093aSJeff Roberson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2570d5093aSJeff Roberson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2670d5093aSJeff Roberson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2770d5093aSJeff Roberson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2870d5093aSJeff Roberson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2970d5093aSJeff Roberson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
3070d5093aSJeff Roberson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3170d5093aSJeff Roberson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3270d5093aSJeff Roberson  * SUCH DAMAGE.
3370d5093aSJeff Roberson  *
3470d5093aSJeff Roberson  * $FreeBSD$
3570d5093aSJeff Roberson  */
3670d5093aSJeff Roberson 
3770d5093aSJeff Roberson #include <pthread.h>
38a091d823SDavid Xu 
39a091d823SDavid Xu #include "libc_private.h"
4070d5093aSJeff Roberson #include "thr_private.h"
4170d5093aSJeff Roberson 
4270d5093aSJeff Roberson #undef errno
4370d5093aSJeff Roberson extern	int	errno;
4470d5093aSJeff Roberson 
4570d5093aSJeff Roberson int *
46a091d823SDavid Xu __error(void)
4770d5093aSJeff Roberson {
48a091d823SDavid Xu 	struct pthread *curthread = _get_curthread();
4970d5093aSJeff Roberson 
50a091d823SDavid Xu 	if (curthread != NULL && curthread != _thr_initial)
51a091d823SDavid Xu 		return (&curthread->error);
52a091d823SDavid Xu 	else
5370d5093aSJeff Roberson 		return (&errno);
5470d5093aSJeff Roberson }
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