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