GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdio/perror.c Lines: 0 17 0.0 %
Date: 2017-11-13 Branches: 0 4 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: perror.c,v 1.9 2015/08/31 02:53:57 guenther Exp $ */
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/*
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 * Copyright (c) 1988, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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void
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perror(const char *s)
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{
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	struct iovec *v;
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	struct iovec iov[4];
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	char buf[NL_TEXTMAX];
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	v = iov;
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	if (s && *s) {
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		v->iov_base = (char *)s;
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		v->iov_len = strlen(s);
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		v++;
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		v->iov_base = ": ";
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		v->iov_len = 2;
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		v++;
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	}
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	(void)strerror_r(errno, buf, sizeof(buf));
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	v->iov_base = buf;
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	v->iov_len = strlen(v->iov_base);
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	v++;
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	v->iov_base = "\n";
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	v->iov_len = 1;
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	(void)writev(STDERR_FILENO, iov, (v - iov) + 1);
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}
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DEF_STRONG(perror);