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 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)err.c 8.1 (Berkeley) 6/4/93"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <err.h> 39 #include <errno.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 44 #ifdef __STDC__ 45 #include <stdarg.h> 46 #else 47 #include <varargs.h> 48 #endif 49 50 extern char *__progname; /* Program name, from crt0. */ 51 52 static FILE *err_file; /* file to use for error output */ 53 static void (*err_exit)(int); 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 __dead void 71 #ifdef __STDC__ 72 err(int eval, const char *fmt, ...) 73 #else 74 err(eval, fmt, va_alist) 75 int eval; 76 const char *fmt; 77 va_dcl 78 #endif 79 { 80 va_list ap; 81 #if __STDC__ 82 va_start(ap, fmt); 83 #else 84 va_start(ap); 85 #endif 86 verr(eval, fmt, ap); 87 va_end(ap); 88 } 89 90 __dead void 91 verr(eval, fmt, ap) 92 int eval; 93 const char *fmt; 94 va_list ap; 95 { 96 int sverrno; 97 98 sverrno = errno; 99 if (! err_file) 100 err_set_file((FILE *)0); 101 (void)fprintf(err_file, "%s: ", __progname); 102 if (fmt != NULL) { 103 (void)vfprintf(err_file, fmt, ap); 104 (void)fprintf(err_file, ": "); 105 } 106 (void)fprintf(err_file, "%s\n", strerror(sverrno)); 107 if(err_exit) 108 err_exit(eval); 109 exit(eval); 110 } 111 112 __dead void 113 #if __STDC__ 114 errx(int eval, const char *fmt, ...) 115 #else 116 errx(eval, fmt, va_alist) 117 int eval; 118 const char *fmt; 119 va_dcl 120 #endif 121 { 122 va_list ap; 123 #if __STDC__ 124 va_start(ap, fmt); 125 #else 126 va_start(ap); 127 #endif 128 verrx(eval, fmt, ap); 129 va_end(ap); 130 } 131 132 __dead void 133 verrx(eval, fmt, ap) 134 int eval; 135 const char *fmt; 136 va_list ap; 137 { 138 if (! err_file) 139 err_set_file((FILE *)0); 140 (void)fprintf(err_file, "%s: ", __progname); 141 if (fmt != NULL) 142 (void)vfprintf(err_file, fmt, ap); 143 (void)fprintf(err_file, "\n"); 144 if (err_exit) 145 err_exit(eval); 146 exit(eval); 147 } 148 149 void 150 #if __STDC__ 151 warn(const char *fmt, ...) 152 #else 153 warn(fmt, va_alist) 154 const char *fmt; 155 va_dcl 156 #endif 157 { 158 va_list ap; 159 #if __STDC__ 160 va_start(ap, fmt); 161 #else 162 va_start(ap); 163 #endif 164 vwarn(fmt, ap); 165 va_end(ap); 166 } 167 168 void 169 vwarn(fmt, ap) 170 const char *fmt; 171 va_list ap; 172 { 173 int sverrno; 174 175 sverrno = errno; 176 if (! err_file) 177 err_set_file((FILE *)0); 178 (void)fprintf(err_file, "%s: ", __progname); 179 if (fmt != NULL) { 180 (void)vfprintf(err_file, fmt, ap); 181 (void)fprintf(err_file, ": "); 182 } 183 (void)fprintf(err_file, "%s\n", strerror(sverrno)); 184 } 185 186 void 187 #ifdef __STDC__ 188 warnx(const char *fmt, ...) 189 #else 190 warnx(fmt, va_alist) 191 const char *fmt; 192 va_dcl 193 #endif 194 { 195 va_list ap; 196 #ifdef __STDC__ 197 va_start(ap, fmt); 198 #else 199 va_start(ap); 200 #endif 201 vwarnx(fmt, ap); 202 va_end(ap); 203 } 204 205 void 206 vwarnx(fmt, ap) 207 const char *fmt; 208 va_list ap; 209 { 210 if (! err_file) 211 err_set_file((FILE *)0); 212 (void)fprintf(err_file, "%s: ", __progname); 213 if (fmt != NULL) 214 (void)vfprintf(err_file, fmt, ap); 215 (void)fprintf(err_file, "\n"); 216 } 217