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108 lines
2.9 KiB
108 lines
2.9 KiB
/* $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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