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ad412770 CW |
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 | /* 2002-05-22 David A. Willis: modified license to the 'BSD no advert' | |
31 | * license, as required by the Director of the Office of | |
32 | * Technology Licensing of the University of California on | |
33 | * July 22, 1999. | |
34 | * See http://www.opensource.org/licenses/bsd-license.html | |
35 | * 2002-05-22 David A. Willis: "Ported" code for compilation under | |
36 | * ix86-pc-cygwin (just added the #if HAVE_CONFIG_H block, | |
37 | * really.) | |
38 | */ | |
39 | ||
40 | #if defined(LIBC_SCCS) && !defined(lint) | |
41 | static char sccsid[] = "@(#)err.c 8.1 (Berkeley) 6/4/93"; | |
42 | #endif /* LIBC_SCCS and not lint */ | |
43 | ||
44 | #if HAVE_CONFIG_H | |
45 | #include "config.h" | |
46 | #endif | |
47 | #include "common.h" | |
48 | ||
49 | #include "err.h" | |
50 | ||
51 | /* These headers are included via common.h, except for <err.h> */ | |
52 | /* err.h is located in CWD, so include using " " instead of < > */ | |
53 | #if 0 | |
54 | #include <err.h> | |
55 | #include <errno.h> | |
56 | #include <stdio.h> | |
57 | #include <stdlib.h> | |
58 | #include <string.h> | |
59 | ||
60 | #ifdef __STDC__ | |
61 | #include <stdarg.h> | |
62 | #else | |
63 | #include <varargs.h> | |
64 | #endif | |
65 | ||
66 | #endif | |
67 | ||
68 | #ifdef HAVE___PROGNAME | |
69 | extern char *__progname; /* Program name, from crt0. */ | |
70 | #else /* ! HAVE___PROGNAME */ | |
71 | /* Eugh! People shouldn't rely on crt0 defining things like this. For | |
72 | example, linux doesn't define __progname. So each program has to call | |
73 | err_setprogname() to register its name. */ | |
74 | /* don't define __progname, we're not allowed to use that namespace */ | |
75 | static const char *progname; | |
76 | #define __progname progname | |
77 | #endif /* ! HAVE___PROGNAME */ | |
78 | ||
79 | ||
80 | #ifndef HAVE___PROGNAME | |
81 | /* sane C compiler, so none of this messy __STDC__ guff */ | |
82 | ||
83 | /* sets __progname to point into argv[0] at the right place. Takes | |
84 | argv[0], and finds where 'the right place' is. */ | |
85 | void err_setprogname(const char *argv0) | |
86 | { | |
87 | __progname = strrchr(argv0, '/'); | |
88 | if (__progname==NULL || *__progname==0) | |
89 | __progname = argv0; | |
90 | else | |
91 | __progname++; | |
92 | } | |
93 | #else /* HAVE___PROGNAME */ | |
94 | #define err_setprogname(x) (void *)0 | |
95 | #endif /* HAVE___PROGNAME */ | |
96 | ||
97 | ||
98 | __dead void | |
99 | #ifdef __STDC__ | |
100 | err(int eval, const char *fmt, ...) | |
101 | #else | |
102 | err(eval, fmt, va_alist) | |
103 | int eval; | |
104 | const char *fmt; | |
105 | va_dcl | |
106 | #endif | |
107 | { | |
108 | va_list ap; | |
109 | #if __STDC__ | |
110 | va_start(ap, fmt); | |
111 | #else | |
112 | va_start(ap); | |
113 | #endif | |
114 | verr(eval, fmt, ap); | |
115 | va_end(ap); | |
116 | } | |
117 | ||
118 | __dead void | |
119 | verr(eval, fmt, ap) | |
120 | int eval; | |
121 | const char *fmt; | |
122 | va_list ap; | |
123 | { | |
124 | int sverrno; | |
125 | ||
126 | sverrno = errno; | |
127 | (void)fprintf(stderr, "%s: ", __progname); | |
128 | if (fmt != NULL) { | |
129 | (void)vfprintf(stderr, fmt, ap); | |
130 | (void)fprintf(stderr, ": "); | |
131 | } | |
132 | (void)fprintf(stderr, "%s\n", strerror(sverrno)); | |
133 | exit(eval); | |
134 | } | |
135 | ||
136 | __dead void | |
137 | #if __STDC__ | |
138 | errx(int eval, const char *fmt, ...) | |
139 | #else | |
140 | errx(eval, fmt, va_alist) | |
141 | int eval; | |
142 | const char *fmt; | |
143 | va_dcl | |
144 | #endif | |
145 | { | |
146 | va_list ap; | |
147 | #if __STDC__ | |
148 | va_start(ap, fmt); | |
149 | #else | |
150 | va_start(ap); | |
151 | #endif | |
152 | verrx(eval, fmt, ap); | |
153 | va_end(ap); | |
154 | } | |
155 | ||
156 | __dead void | |
157 | verrx(eval, fmt, ap) | |
158 | int eval; | |
159 | const char *fmt; | |
160 | va_list ap; | |
161 | { | |
162 | (void)fprintf(stderr, "%s: ", __progname); | |
163 | if (fmt != NULL) | |
164 | (void)vfprintf(stderr, fmt, ap); | |
165 | (void)fprintf(stderr, "\n"); | |
166 | exit(eval); | |
167 | } | |
168 | ||
169 | void | |
170 | #if __STDC__ | |
171 | warn(const char *fmt, ...) | |
172 | #else | |
173 | warn(fmt, va_alist) | |
174 | const char *fmt; | |
175 | va_dcl | |
176 | #endif | |
177 | { | |
178 | va_list ap; | |
179 | #if __STDC__ | |
180 | va_start(ap, fmt); | |
181 | #else | |
182 | va_start(ap); | |
183 | #endif | |
184 | vwarn(fmt, ap); | |
185 | va_end(ap); | |
186 | } | |
187 | ||
188 | void | |
189 | vwarn(fmt, ap) | |
190 | const char *fmt; | |
191 | va_list ap; | |
192 | { | |
193 | int sverrno; | |
194 | ||
195 | sverrno = errno; | |
196 | (void)fprintf(stderr, "%s: ", __progname); | |
197 | if (fmt != NULL) { | |
198 | (void)vfprintf(stderr, fmt, ap); | |
199 | (void)fprintf(stderr, ": "); | |
200 | } | |
201 | (void)fprintf(stderr, "%s\n", strerror(sverrno)); | |
202 | } | |
203 | ||
204 | void | |
205 | #ifdef __STDC__ | |
206 | warnx(const char *fmt, ...) | |
207 | #else | |
208 | warnx(fmt, va_alist) | |
209 | const char *fmt; | |
210 | va_dcl | |
211 | #endif | |
212 | { | |
213 | va_list ap; | |
214 | #ifdef __STDC__ | |
215 | va_start(ap, fmt); | |
216 | #else | |
217 | va_start(ap); | |
218 | #endif | |
219 | vwarnx(fmt, ap); | |
220 | va_end(ap); | |
221 | } | |
222 | ||
223 | void | |
224 | vwarnx(fmt, ap) | |
225 | const char *fmt; | |
226 | va_list ap; | |
227 | { | |
228 | (void)fprintf(stderr, "%s: ", __progname); | |
229 | if (fmt != NULL) | |
230 | (void)vfprintf(stderr, fmt, ap); | |
231 | (void)fprintf(stderr, "\n"); | |
232 | } |