[apple/libc.git] / stdio / FreeBSD / perror.c

/*
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)perror.c	8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/stdio/perror.c,v 1.9 2007/01/09 00:28:07 imp Exp $");

#include "namespace.h"
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include "un-namespace.h"
#include "libc_private.h"
#include "local.h"

void
perror(s)
	const char *s;
{
	char msgbuf[NL_TEXTMAX];
	struct iovec *v;
	struct iovec iov[4];

	v = iov;
	if (s != NULL && *s != '\0') {
		v->iov_base = (char *)s;
		v->iov_len = strlen(s);
		v++;
		v->iov_base = ": ";
		v->iov_len = 2;
		v++;
	}
	strerror_r(errno, msgbuf, sizeof(msgbuf));
	v->iov_base = msgbuf;
	v->iov_len = strlen(v->iov_base);
	v++;
	v->iov_base = "\n";
	v->iov_len = 1;
	FLOCKFILE(stderr);
	__sflush(stderr);
	(void)_writev(stderr->_file, iov, (v - iov) + 1);
	stderr->_flags &= ~__SOFF;
	FUNLOCKFILE(stderr);
}
Commit	Line	Data
9385eb3d A	1	/*
9385eb3d A	2	* Copyright (c) 1988, 1993
e9ce8d39 A	3	* The Regents of the University of California. All rights reserved.
e9ce8d39 A	4	*
e9ce8d39 A	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
e9ce8d39 A	13	* 4. Neither the name of the University nor the names of its contributors
	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
	30	#if defined(LIBC_SCCS) && !defined(lint)
9385eb3d	31	static char sccsid[] = "@(#)perror.c 8.1 (Berkeley) 6/4/93";
e9ce8d39	32	#endif /* LIBC_SCCS and not lint */
9385eb3d	33	#include <sys/cdefs.h>
1f2f436a	34	__FBSDID("$FreeBSD: src/lib/libc/stdio/perror.c,v 1.9 2007/01/09 00:28:07 imp Exp $");
e9ce8d39	35
9385eb3d	36	#include "namespace.h"
5b2abdfb	37	#include <sys/types.h>
9385eb3d	38	#include <sys/uio.h>
e9ce8d39	39	#include <unistd.h>
9385eb3d A	40	#include <errno.h>
9385eb3d A	41	#include <limits.h>
e9ce8d39	42	#include <stdio.h>
9385eb3d A	43	#include <string.h>
	44	#include "un-namespace.h"
	45	#include "libc_private.h"
	46	#include "local.h"
e9ce8d39	47
9385eb3d A	48	void
	49	perror(s)
	50	const char *s;
e9ce8d39	51	{
9385eb3d A	52	char msgbuf[NL_TEXTMAX];
	53	struct iovec *v;
	54	struct iovec iov[4];
5b2abdfb	55
9385eb3d A	56	v = iov;
	57	if (s != NULL && *s != '\0') {
	58	v->iov_base = (char *)s;
	59	v->iov_len = strlen(s);
	60	v++;
	61	v->iov_base = ": ";
	62	v->iov_len = 2;
	63	v++;
	64	}
	65	strerror_r(errno, msgbuf, sizeof(msgbuf));
	66	v->iov_base = msgbuf;
	67	v->iov_len = strlen(v->iov_base);
	68	v++;
	69	v->iov_base = "\n";
	70	v->iov_len = 1;
	71	FLOCKFILE(stderr);
	72	__sflush(stderr);
	73	(void)_writev(stderr->_file, iov, (v - iov) + 1);
	74	stderr->_flags &= ~__SOFF;
	75	FUNLOCKFILE(stderr);
e9ce8d39	76	}