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#define __weak_reference(a, b) 44 45extern const char *_getprogname(void); 46 47static FILE *err_file; /* file to use for error output */ 48static void (*err_exit)(int); 49 50void _err(int eval, const char *fmt, ...); 51void _warn(const char *fmt, ...); 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 */ 58void 59err_set_file(void *fp) 60{ 61 if (fp) 62 err_file = fp; 63 else 64 err_file = stderr; 65} 66 67void 68err_set_exit(void (*ef)(int)) 69{ 70 err_exit = ef; 71} 72 73__weak_reference(_err, err); 74 75void 76_err(int eval, const char *fmt, ...) 77{ 78 va_list ap; 79 va_start(ap, fmt); 80 verrc(eval, errno, fmt, ap); 81 va_end(ap); 82} 83 84void 85verr(eval, fmt, ap) 86 int eval; 87 const char *fmt; 88 va_list ap; 89{ 90 verrc(eval, errno, fmt, ap); 91} 92 93void 94errc(int eval, int code, const char *fmt, ...) 95{ 96 va_list ap; 97 va_start(ap, fmt); 98 verrc(eval, code, fmt, ap); 99 va_end(ap); 100} 101 102void 103verrc(eval, code, fmt, ap) 104 int eval; 105 int code; 106 const char *fmt; 107 va_list ap; 108{ 109 if (err_file == 0) 110 err_set_file((FILE *)0); 111 fprintf(err_file, "%s: ", _getprogname()); 112 if (fmt != NULL) { 113 vfprintf(err_file, fmt, ap); 114 fprintf(err_file, ": "); 115 } 116 fprintf(err_file, "%s\n", strerror(code)); 117 if (err_exit) 118 err_exit(eval); 119 exit(eval); 120} 121 122void 123errx(int eval, const char *fmt, ...) 124{ 125 va_list ap; 126 va_start(ap, fmt); 127 verrx(eval, fmt, ap); 128 va_end(ap); 129} 130 131void 132verrx(eval, fmt, ap) 133 int eval; 134 const char *fmt; 135 va_list ap; 136{ 137 if (err_file == 0) 138 err_set_file((FILE *)0); 139 fprintf(err_file, "%s: ", _getprogname()); 140 if (fmt != NULL) 141 vfprintf(err_file, fmt, ap); 142 fprintf(err_file, "\n"); 143 if (err_exit) 144 err_exit(eval); 145 exit(eval); 146} 147 148__weak_reference(_warn, warn); 149 150void 151_warn(const char *fmt, ...) 152{ 153 va_list ap; 154 va_start(ap, fmt); 155 vwarnc(errno, fmt, ap); 156 va_end(ap); 157} 158 159void 160vwarn(fmt, ap) 161 const char *fmt; 162 va_list ap; 163{ 164 vwarnc(errno, fmt, ap); 165} 166 167void 168warnc(int code, const char *fmt, ...) 169{ 170 va_list ap; 171 va_start(ap, fmt); 172 vwarnc(code, fmt, ap); 173 va_end(ap); 174} 175 176void 177vwarnc(code, fmt, ap) 178 int code; 179 const char *fmt; 180 va_list ap; 181{ 182 if (err_file == 0) 183 err_set_file((FILE *)0); 184 fprintf(err_file, "%s: ", _getprogname()); 185 if (fmt != NULL) { 186 vfprintf(err_file, fmt, ap); 187 fprintf(err_file, ": "); 188 } 189 fprintf(err_file, "%s\n", strerror(code)); 190} 191 192void 193warnx(const char *fmt, ...) 194{ 195 va_list ap; 196 va_start(ap, fmt); 197 vwarnx(fmt, ap); 198 va_end(ap); 199} 200 201void 202vwarnx(fmt, ap) 203 const char *fmt; 204 va_list ap; 205{ 206 if (err_file == 0) 207 err_set_file((FILE *)0); 208 fprintf(err_file, "%s: ", _getprogname()); 209 if (fmt != NULL) 210 vfprintf(err_file, fmt, ap); 211 fprintf(err_file, "\n"); 212} 213 214#pragma weak err=_err 215#pragma weak warn=_warn 216