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 1.3 2005/03/09 18:52:21 joerg 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 47 static FILE *err_file; /* file to use for error output */ 48 static void (*err_exit)(int); 49 50 /* 51 * This is declared to take a `void *' so that the caller is not required 52 * to include <stdio.h> first. However, it is really a `FILE *', and the 53 * manual page documents it as such. 54 */ 55 void 56 err_set_file(void *fp) 57 { 58 if (fp) 59 err_file = fp; 60 else 61 err_file = stderr; 62 } 63 64 void 65 err_set_exit(void (*ef)(int)) 66 { 67 err_exit = ef; 68 } 69 70 void 71 err(int eval, const char *fmt, ...) 72 { 73 va_list ap; 74 va_start(ap, fmt); 75 verrc(eval, errno, fmt, ap); 76 va_end(ap); 77 } 78 79 void 80 verr(eval, fmt, ap) 81 int eval; 82 const char *fmt; 83 va_list ap; 84 { 85 verrc(eval, errno, fmt, ap); 86 } 87 88 void 89 errc(int eval, int code, const char *fmt, ...) 90 { 91 va_list ap; 92 va_start(ap, fmt); 93 verrc(eval, code, fmt, ap); 94 va_end(ap); 95 } 96 97 void 98 verrc(eval, code, fmt, ap) 99 int eval; 100 int code; 101 const char *fmt; 102 va_list ap; 103 { 104 if (err_file == 0) 105 err_set_file((FILE *)0); 106 fprintf(err_file, "%s: ", getprogname()); 107 if (fmt != NULL) { 108 vfprintf(err_file, fmt, ap); 109 fprintf(err_file, ": "); 110 } 111 fprintf(err_file, "%s\n", strerror(code)); 112 if (err_exit) 113 err_exit(eval); 114 exit(eval); 115 } 116 117 void 118 errx(int eval, const char *fmt, ...) 119 { 120 va_list ap; 121 va_start(ap, fmt); 122 verrx(eval, fmt, ap); 123 va_end(ap); 124 } 125 126 void 127 verrx(eval, fmt, ap) 128 int eval; 129 const char *fmt; 130 va_list ap; 131 { 132 if (err_file == 0) 133 err_set_file((FILE *)0); 134 fprintf(err_file, "%s: ", getprogname()); 135 if (fmt != NULL) 136 vfprintf(err_file, fmt, ap); 137 fprintf(err_file, "\n"); 138 if (err_exit) 139 err_exit(eval); 140 exit(eval); 141 } 142 143 void 144 warn(const char *fmt, ...) 145 { 146 va_list ap; 147 va_start(ap, fmt); 148 vwarnc(errno, fmt, ap); 149 va_end(ap); 150 } 151 152 void 153 vwarn(fmt, ap) 154 const char *fmt; 155 va_list ap; 156 { 157 vwarnc(errno, fmt, ap); 158 } 159 160 void 161 warnc(int code, const char *fmt, ...) 162 { 163 va_list ap; 164 va_start(ap, fmt); 165 vwarnc(code, fmt, ap); 166 va_end(ap); 167 } 168 169 void 170 vwarnc(code, fmt, ap) 171 int code; 172 const char *fmt; 173 va_list ap; 174 { 175 if (err_file == 0) 176 err_set_file((FILE *)0); 177 fprintf(err_file, "%s: ", getprogname()); 178 if (fmt != NULL) { 179 vfprintf(err_file, fmt, ap); 180 fprintf(err_file, ": "); 181 } 182 fprintf(err_file, "%s\n", strerror(code)); 183 } 184 185 void 186 warnx(const char *fmt, ...) 187 { 188 va_list ap; 189 va_start(ap, fmt); 190 vwarnx(fmt, ap); 191 va_end(ap); 192 } 193 194 void 195 vwarnx(fmt, ap) 196 const char *fmt; 197 va_list ap; 198 { 199 if (err_file == 0) 200 err_set_file((FILE *)0); 201 fprintf(err_file, "%s: ", getprogname()); 202 if (fmt != NULL) 203 vfprintf(err_file, fmt, ap); 204 fprintf(err_file, "\n"); 205 } 206