1/*-
2 * Copyright (c) 1993
3 *      The Regents of the University of California.  All rights reserved.
4 *
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.
13 * 3. 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#include <sys/cdefs.h>
31#include <err.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <stdarg.h>
35#include <errno.h>
36
37extern const char* __progname;
38
39__noreturn void
40err(int eval, const char *fmt, ...)
41{
42        va_list ap;
43
44        va_start(ap, fmt);
45        verr(eval, fmt, ap);
46        va_end(ap);
47}
48
49__noreturn void
50errx(int eval, const char *fmt, ...)
51{
52        va_list ap;
53
54        va_start(ap, fmt);
55        verrx(eval, fmt, ap);
56        va_end(ap);
57}
58
59__noreturn void
60verr(int eval, const char *fmt, va_list ap)
61{
62        int sverrno;
63
64        sverrno = errno;
65        (void)fprintf(stderr, "%s: ", __progname);
66        if (fmt != NULL) {
67                (void)vfprintf(stderr, fmt, ap);
68                (void)fprintf(stderr, ": ");
69        }
70        (void)fprintf(stderr, "%s\n", strerror(sverrno));
71        exit(eval);
72}
73
74
75__noreturn void
76verrx(int eval, const char *fmt, va_list ap)
77{
78        (void)fprintf(stderr, "%s: ", __progname);
79        if (fmt != NULL)
80                (void)vfprintf(stderr, fmt, ap);
81        (void)fprintf(stderr, "\n");
82        exit(eval);
83}
84
85void
86warn(const char *fmt, ...)
87{
88	va_list ap;
89
90	va_start(ap, fmt);
91	vwarn(fmt, ap);
92	va_end(ap);
93}
94
95void
96warnx(const char *fmt, ...)
97{
98	va_list ap;
99
100	va_start(ap, fmt);
101	vwarnx(fmt, ap);
102	va_end(ap);
103}
104
105void
106vwarn(const char *fmt, va_list ap)
107{
108	int sverrno;
109
110	sverrno = errno;
111	(void)fprintf(stderr, "%s: ", __progname);
112	if (fmt != NULL) {
113		(void)vfprintf(stderr, fmt, ap);
114		(void)fprintf(stderr, ": ");
115	}
116	(void)fprintf(stderr, "%s\n", strerror(sverrno));
117}
118
119void
120vwarnx(const char *fmt, va_list ap)
121{
122	(void)fprintf(stderr, "%s: ", __progname);
123	if (fmt != NULL)
124		(void)vfprintf(stderr, fmt, ap);
125	(void)fprintf(stderr, "\n");
126}
127