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 */ 33 34 35 #include <err.h> 36 #include <errno.h> 37 #include <stdarg.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 42 //#include "libc_private.h" 43 44 extern const char *_getprogname(void); 45 46 static FILE *err_file; /* file to use for error output */ 47 static void (*err_exit)(int); 48 49 void _err(int eval, const char *fmt, ...); 50 void _warn(const char *fmt, ...); 51 52 /* 53 * This is declared to take a `void *' so that the caller is not required 54 * to include <stdio.h> first. However, it is really a `FILE *', and the 55 * manual page documents it as such. 56 */ 57 void 58 err_set_file(void *fp) 59 { 60 if (fp) 61 err_file = fp; 62 else 63 err_file = stderr; 64 } 65 66 void 67 err_set_exit(void (*ef)(int)) 68 { 69 err_exit = ef; 70 } 71 72 __weak_reference(_err, err); 73 74 void 75 _err(int eval, const char *fmt, ...) 76 { 77 va_list ap; 78 va_start(ap, fmt); 79 verrc(eval, errno, fmt, ap); 80 va_end(ap); 81 } 82 83 void 84 verr(eval, fmt, ap) 85 int eval; 86 const char *fmt; 87 va_list ap; 88 { 89 verrc(eval, errno, fmt, ap); 90 } 91 92 void 93 errc(int eval, int code, const char *fmt, ...) 94 { 95 va_list ap; 96 va_start(ap, fmt); 97 verrc(eval, code, fmt, ap); 98 va_end(ap); 99 } 100 101 void 102 verrc(eval, code, fmt, ap) 103 int eval; 104 int code; 105 const char *fmt; 106 va_list ap; 107 { 108 if (err_file == 0) 109 err_set_file((FILE *)0); 110 fprintf(err_file, "%s: ", _getprogname()); 111 if (fmt != NULL) { 112 vfprintf(err_file, fmt, ap); 113 fprintf(err_file, ": "); 114 } 115 fprintf(err_file, "%s\n", strerror(code)); 116 if (err_exit) 117 err_exit(eval); 118 exit(eval); 119 } 120 121 void 122 errx(int eval, const char *fmt, ...) 123 { 124 va_list ap; 125 va_start(ap, fmt); 126 verrx(eval, fmt, ap); 127 va_end(ap); 128 } 129 130 void 131 verrx(eval, fmt, ap) 132 int eval; 133 const char *fmt; 134 va_list ap; 135 { 136 if (err_file == 0) 137 err_set_file((FILE *)0); 138 fprintf(err_file, "%s: ", _getprogname()); 139 if (fmt != NULL) 140 vfprintf(err_file, fmt, ap); 141 fprintf(err_file, "\n"); 142 if (err_exit) 143 err_exit(eval); 144 exit(eval); 145 } 146 147 __weak_reference(_warn, warn); 148 149 void 150 _warn(const char *fmt, ...) 151 { 152 va_list ap; 153 va_start(ap, fmt); 154 vwarnc(errno, fmt, ap); 155 va_end(ap); 156 } 157 158 void 159 vwarn(fmt, ap) 160 const char *fmt; 161 va_list ap; 162 { 163 vwarnc(errno, fmt, ap); 164 } 165 166 void 167 warnc(int code, const char *fmt, ...) 168 { 169 va_list ap; 170 va_start(ap, fmt); 171 vwarnc(code, fmt, ap); 172 va_end(ap); 173 } 174 175 void 176 vwarnc(code, fmt, ap) 177 int code; 178 const char *fmt; 179 va_list ap; 180 { 181 if (err_file == 0) 182 err_set_file((FILE *)0); 183 fprintf(err_file, "%s: ", _getprogname()); 184 if (fmt != NULL) { 185 vfprintf(err_file, fmt, ap); 186 fprintf(err_file, ": "); 187 } 188 fprintf(err_file, "%s\n", strerror(code)); 189 } 190 191 void 192 warnx(const char *fmt, ...) 193 { 194 va_list ap; 195 va_start(ap, fmt); 196 vwarnx(fmt, ap); 197 va_end(ap); 198 } 199 200 void 201 vwarnx(fmt, ap) 202 const char *fmt; 203 va_list ap; 204 { 205 if (err_file == 0) 206 err_set_file((FILE *)0); 207 fprintf(err_file, "%s: ", _getprogname()); 208 if (fmt != NULL) 209 vfprintf(err_file, fmt, ap); 210 fprintf(err_file, "\n"); 211 } 212 213 #pragma weak err=_err 214 #pragma weak warn=_warn 215