xref: /freebsd/lib/libthr/sys/thr_error.c (revision 1235d276b78a769bded01d51c9bf3cdc480db9fb)
1df57947fSPedro F. Giffuni /*-
2df57947fSPedro F. Giffuni  * SPDX-License-Identifier: BSD-4-Clause
3df57947fSPedro F. Giffuni  *
470d5093aSJeff Roberson  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
570d5093aSJeff Roberson  * Copyright (c) 1994 by Chris Provenzano, proven@mit.edu
670d5093aSJeff Roberson  * All rights reserved.
770d5093aSJeff Roberson  *
870d5093aSJeff Roberson  * Redistribution and use in source and binary forms, with or without
970d5093aSJeff Roberson  * modification, are permitted provided that the following conditions
1070d5093aSJeff Roberson  * are met:
1170d5093aSJeff Roberson  * 1. Redistributions of source code must retain the above copyright
1270d5093aSJeff Roberson  *    notice, this list of conditions and the following disclaimer.
1370d5093aSJeff Roberson  * 2. Redistributions in binary form must reproduce the above copyright
1470d5093aSJeff Roberson  *    notice, this list of conditions and the following disclaimer in the
1570d5093aSJeff Roberson  *    documentation and/or other materials provided with the distribution.
1670d5093aSJeff Roberson  * 3. All advertising materials mentioning features or use of this software
1770d5093aSJeff Roberson  *    must display the following acknowledgement:
1870d5093aSJeff Roberson  *	This product includes software developed by John Birrell
1970d5093aSJeff Roberson  *  and Chris Provenzano.
2070d5093aSJeff Roberson  * 4. Neither the name of the author nor the names of any co-contributors
2170d5093aSJeff Roberson  *    may be used to endorse or promote products derived from this software
2270d5093aSJeff Roberson  *    without specific prior written permission.
2370d5093aSJeff Roberson  *
2470d5093aSJeff Roberson  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
2570d5093aSJeff Roberson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2670d5093aSJeff Roberson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2770d5093aSJeff Roberson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2870d5093aSJeff Roberson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2970d5093aSJeff Roberson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
3070d5093aSJeff Roberson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
3170d5093aSJeff Roberson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
3270d5093aSJeff Roberson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3370d5093aSJeff Roberson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3470d5093aSJeff Roberson  * SUCH DAMAGE.
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 
42*1235d276SBrooks Davis extern int __libsys_errno;
4370d5093aSJeff Roberson 
448495e8b1SKonstantin Belousov __weak_reference(__error_threaded, __error);
4570d5093aSJeff Roberson int *
__error_threaded(void)468495e8b1SKonstantin Belousov __error_threaded(void)
4770d5093aSJeff Roberson {
489bbc6c7fSDavid Xu 	struct pthread *curthread;
4970d5093aSJeff Roberson 
509bbc6c7fSDavid Xu 	if (_thr_initial != NULL) {
519bbc6c7fSDavid Xu 		curthread = _get_curthread();
52a091d823SDavid Xu 		if (curthread != NULL && curthread != _thr_initial)
53a091d823SDavid Xu 			return (&curthread->error);
549bbc6c7fSDavid Xu 	}
55*1235d276SBrooks Davis 	return (&__libsys_errno);
5670d5093aSJeff Roberson }
57