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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * From: @(#)err.c 8.1 (Berkeley) 6/4/93 33 */ 34 35 #if defined(LIBC_RCS) && !defined(lint) 36 static const char rcsid[] = 37 "$FreeBSD$"; 38 #endif /* LIBC_RCS and not lint */ 39 40 #include <err.h> 41 #include <errno.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 46 #include <stdarg.h> 47 48 extern char *__progname; /* Program name, from crt0. */ 49 50 static FILE *err_file; /* file to use for error output */ 51 static void (*err_exit)(int); 52 53 /* 54 * This is declared to take a `void *' so that the caller is not required 55 * to include <stdio.h> first. However, it is really a `FILE *', and the 56 * manual page documents it as such. 57 */ 58 void 59 err_set_file(void *fp) 60 { 61 if (fp) 62 err_file = fp; 63 else 64 err_file = stderr; 65 } 66 67 void 68 err_set_exit(void (*ef)(int)) 69 { 70 err_exit = ef; 71 } 72 73 void 74 err(int eval, const char *fmt, ...) 75 { 76 va_list ap; 77 va_start(ap, fmt); 78 verrc(eval, errno, fmt, ap); 79 va_end(ap); 80 } 81 82 void 83 verr(eval, fmt, ap) 84 int eval; 85 const char *fmt; 86 va_list ap; 87 { 88 verrc(eval, errno, fmt, ap); 89 } 90 91 void 92 errc(int eval, int code, const char *fmt, ...) 93 { 94 va_list ap; 95 va_start(ap, fmt); 96 verrc(eval, code, fmt, ap); 97 va_end(ap); 98 } 99 100 void 101 verrc(eval, code, fmt, ap) 102 int eval; 103 int code; 104 const char *fmt; 105 va_list ap; 106 { 107 if (err_file == 0) 108 err_set_file((FILE *)0); 109 fprintf(err_file, "%s: ", __progname); 110 if (fmt != NULL) { 111 vfprintf(err_file, fmt, ap); 112 fprintf(err_file, ": "); 113 } 114 fprintf(err_file, "%s\n", strerror(code)); 115 if (err_exit) 116 err_exit(eval); 117 exit(eval); 118 } 119 120 void 121 errx(int eval, const char *fmt, ...) 122 { 123 va_list ap; 124 va_start(ap, fmt); 125 verrx(eval, fmt, ap); 126 va_end(ap); 127 } 128 129 void 130 verrx(eval, fmt, ap) 131 int eval; 132 const char *fmt; 133 va_list ap; 134 { 135 if (err_file == 0) 136 err_set_file((FILE *)0); 137 fprintf(err_file, "%s: ", __progname); 138 if (fmt != NULL) 139 vfprintf(err_file, fmt, ap); 140 fprintf(err_file, "\n"); 141 if (err_exit) 142 err_exit(eval); 143 exit(eval); 144 } 145 146 void 147 warn(const char *fmt, ...) 148 { 149 va_list ap; 150 va_start(ap, fmt); 151 vwarnc(errno, fmt, ap); 152 va_end(ap); 153 } 154 155 void 156 vwarn(fmt, ap) 157 const char *fmt; 158 va_list ap; 159 { 160 vwarnc(errno, fmt, ap); 161 } 162 163 void 164 warnc(int code, const char *fmt, ...) 165 { 166 va_list ap; 167 va_start(ap, fmt); 168 vwarnc(code, fmt, ap); 169 va_end(ap); 170 } 171 172 void 173 vwarnc(code, fmt, ap) 174 int code; 175 const char *fmt; 176 va_list ap; 177 { 178 if (err_file == 0) 179 err_set_file((FILE *)0); 180 fprintf(err_file, "%s: ", __progname); 181 if (fmt != NULL) { 182 vfprintf(err_file, fmt, ap); 183 fprintf(err_file, ": "); 184 } 185 fprintf(err_file, "%s\n", strerror(code)); 186 } 187 188 void 189 warnx(const char *fmt, ...) 190 { 191 va_list ap; 192 va_start(ap, fmt); 193 vwarnx(fmt, ap); 194 va_end(ap); 195 } 196 197 void 198 vwarnx(fmt, ap) 199 const char *fmt; 200 va_list ap; 201 { 202 if (err_file == 0) 203 err_set_file((FILE *)0); 204 fprintf(err_file, "%s: ", __progname); 205 if (fmt != NULL) 206 vfprintf(err_file, fmt, ap); 207 fprintf(err_file, "\n"); 208 } 209