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 * $FreeBSD: src/lib/libc/gen/err.c,v 1.6 1999/08/27 23:58:33 peter Exp $ 35 * $DragonFly: src/lib/libc/gen/err.c,v 1.2 2003/06/17 04:26:42 dillon Exp $ 36 */ 37 38 #include <err.h> 39 #include <errno.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 44 #include <stdarg.h> 45 46 extern char *__progname; /* Program name, from crt0. */ 47 48 static FILE *err_file; /* file to use for error output */ 49 static void (*err_exit)(int); 50 51 /* 52 * This is declared to take a `void *' so that the caller is not required 53 * to include <stdio.h> first. However, it is really a `FILE *', and the 54 * manual page documents it as such. 55 */ 56 void 57 err_set_file(void *fp) 58 { 59 if (fp) 60 err_file = fp; 61 else 62 err_file = stderr; 63 } 64 65 void 66 err_set_exit(void (*ef)(int)) 67 { 68 err_exit = ef; 69 } 70 71 void 72 err(int eval, const char *fmt, ...) 73 { 74 va_list ap; 75 va_start(ap, fmt); 76 verrc(eval, errno, fmt, ap); 77 va_end(ap); 78 } 79 80 void 81 verr(eval, fmt, ap) 82 int eval; 83 const char *fmt; 84 va_list ap; 85 { 86 verrc(eval, errno, fmt, ap); 87 } 88 89 void 90 errc(int eval, int code, const char *fmt, ...) 91 { 92 va_list ap; 93 va_start(ap, fmt); 94 verrc(eval, code, fmt, ap); 95 va_end(ap); 96 } 97 98 void 99 verrc(eval, code, fmt, ap) 100 int eval; 101 int code; 102 const char *fmt; 103 va_list ap; 104 { 105 if (err_file == 0) 106 err_set_file((FILE *)0); 107 fprintf(err_file, "%s: ", __progname); 108 if (fmt != NULL) { 109 vfprintf(err_file, fmt, ap); 110 fprintf(err_file, ": "); 111 } 112 fprintf(err_file, "%s\n", strerror(code)); 113 if (err_exit) 114 err_exit(eval); 115 exit(eval); 116 } 117 118 void 119 errx(int eval, const char *fmt, ...) 120 { 121 va_list ap; 122 va_start(ap, fmt); 123 verrx(eval, fmt, ap); 124 va_end(ap); 125 } 126 127 void 128 verrx(eval, fmt, ap) 129 int eval; 130 const char *fmt; 131 va_list ap; 132 { 133 if (err_file == 0) 134 err_set_file((FILE *)0); 135 fprintf(err_file, "%s: ", __progname); 136 if (fmt != NULL) 137 vfprintf(err_file, fmt, ap); 138 fprintf(err_file, "\n"); 139 if (err_exit) 140 err_exit(eval); 141 exit(eval); 142 } 143 144 void 145 warn(const char *fmt, ...) 146 { 147 va_list ap; 148 va_start(ap, fmt); 149 vwarnc(errno, fmt, ap); 150 va_end(ap); 151 } 152 153 void 154 vwarn(fmt, ap) 155 const char *fmt; 156 va_list ap; 157 { 158 vwarnc(errno, fmt, ap); 159 } 160 161 void 162 warnc(int code, const char *fmt, ...) 163 { 164 va_list ap; 165 va_start(ap, fmt); 166 vwarnc(code, fmt, ap); 167 va_end(ap); 168 } 169 170 void 171 vwarnc(code, fmt, ap) 172 int code; 173 const char *fmt; 174 va_list ap; 175 { 176 if (err_file == 0) 177 err_set_file((FILE *)0); 178 fprintf(err_file, "%s: ", __progname); 179 if (fmt != NULL) { 180 vfprintf(err_file, fmt, ap); 181 fprintf(err_file, ": "); 182 } 183 fprintf(err_file, "%s\n", strerror(code)); 184 } 185 186 void 187 warnx(const char *fmt, ...) 188 { 189 va_list ap; 190 va_start(ap, fmt); 191 vwarnx(fmt, ap); 192 va_end(ap); 193 } 194 195 void 196 vwarnx(fmt, ap) 197 const char *fmt; 198 va_list ap; 199 { 200 if (err_file == 0) 201 err_set_file((FILE *)0); 202 fprintf(err_file, "%s: ", __progname); 203 if (fmt != NULL) 204 vfprintf(err_file, fmt, ap); 205 fprintf(err_file, "\n"); 206 } 207