108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/* $OpenBSD: verr.c,v 1.11 2016/03/13 18:34:20 guenther Exp $ */
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/*-
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* Copyright (c) 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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/*
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* Inspired by OpenBSD's `err.h' header, found at
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* http://man.openbsd.org/err.3
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* http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/verr.c
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*/
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "err.h"
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extern const char *__progname;
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void
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err(int eval, const char *fmt, ...)
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{
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va_list ap;
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int saved_errno = errno;
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fprintf(stderr, "%s: ", __progname);
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if (fmt != NULL) {
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, ": ");
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}
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fprintf(stderr, "%s\n", strerror(saved_errno));
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exit(eval);
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}
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void
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errx(int eval, const char *fmt, ...)
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{
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va_list ap;
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fprintf(stderr, "%s: ", __progname);
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if (fmt != NULL) {
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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fprintf(stderr, "\n");
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exit(eval);
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}
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void
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warn(const char *fmt, ...)
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{
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va_list ap;
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int saved_errno = errno;
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fprintf(stderr, "%s: ", __progname);
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if (fmt != NULL) {
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, ": ");
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}
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fprintf(stderr, "%s\n", strerror(saved_errno));
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}
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void
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warnx(const char *fmt, ...)
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{
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va_list ap;
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fprintf(stderr, "%s: ", __progname);
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if (fmt != NULL) {
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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fprintf(stderr, "\n");
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}
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