1/* $Id: compat_err.c,v 1.5 2020/06/15 01:37:14 schwarze Exp $ */
2/*
3 * Copyright (c) 1993
4 *      The Regents of the University of California.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the University nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30#include "config.h"
31
32#include <errno.h>
33#include <stdarg.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37
38static void vwarni(const char *, va_list);
39static void vwarnxi(const char *, va_list);
40
41static void
42vwarnxi(const char *fmt, va_list ap)
43{
44	fprintf(stderr, "%s: ", getprogname());
45	if (fmt != NULL)
46		vfprintf(stderr, fmt, ap);
47}
48
49static void
50vwarni(const char *fmt, va_list ap)
51{
52	int sverrno;
53
54	sverrno = errno;
55	vwarnxi(fmt, ap);
56	if (fmt != NULL)
57		fputs(": ", stderr);
58	fprintf(stderr, "%s\n", strerror(sverrno));
59}
60
61void
62err(int eval, const char *fmt, ...)
63{
64	va_list ap;
65
66	va_start(ap, fmt);
67	vwarni(fmt, ap);
68	va_end(ap);
69	exit(eval);
70}
71
72void
73errx(int eval, const char *fmt, ...)
74{
75	va_list ap;
76
77	va_start(ap, fmt);
78	vwarnxi(fmt, ap);
79	va_end(ap);
80	fputc('\n', stderr);
81	exit(eval);
82}
83
84void
85warn(const char *fmt, ...)
86{
87	va_list ap;
88
89	va_start(ap, fmt);
90	vwarni(fmt, ap);
91	va_end(ap);
92}
93
94void
95warnx(const char *fmt, ...)
96{
97	va_list ap;
98
99	va_start(ap, fmt);
100	vwarnxi(fmt, ap);
101	va_end(ap);
102	fputc('\n', stderr);
103}
104