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 void 53 err(int eval, const char *fmt, ...) 54 { 55 va_list ap; 56 va_start(ap, fmt); 57 verr(eval, fmt, ap); 58 va_end(ap); 59 } 60 61 void 62 verr(int eval, const char *fmt, va_list ap) 63 { 64 int sverrno; 65 66 sverrno = errno; 67 (void)fprintf(stderr, "%s: ", __progname); 68 if (fmt != NULL) { 69 (void)vfprintf(stderr, fmt, ap); 70 (void)fprintf(stderr, ": "); 71 } 72 (void)fprintf(stderr, "%s\n", strerror(sverrno)); 73 exit(eval); 74 } 75 76 void 77 errx(int eval, const char *fmt, ...) 78 { 79 va_list ap; 80 va_start(ap, fmt); 81 verrx(eval, fmt, ap); 82 va_end(ap); 83 } 84 85 void 86 verrx(int eval, const char *fmt, va_list ap) 87 { 88 (void)fprintf(stderr, "%s: ", __progname); 89 if (fmt != NULL) 90 (void)vfprintf(stderr, fmt, ap); 91 (void)fprintf(stderr, "\n"); 92 exit(eval); 93 } 94 95 void 96 warn(const char *fmt, ...) 97 { 98 va_list ap; 99 va_start(ap, fmt); 100 vwarn(fmt, ap); 101 va_end(ap); 102 } 103 104 void 105 vwarn(fmt, ap) 106 const char *fmt; 107 va_list ap; 108 { 109 int sverrno; 110 111 sverrno = errno; 112 (void)fprintf(stderr, "%s: ", __progname); 113 if (fmt != NULL) { 114 (void)vfprintf(stderr, fmt, ap); 115 (void)fprintf(stderr, ": "); 116 } 117 (void)fprintf(stderr, "%s\n", strerror(sverrno)); 118 } 119 120 void 121 warnx(const char *fmt, ...) 122 { 123 va_list ap; 124 va_start(ap, fmt); 125 vwarnx(fmt, ap); 126 va_end(ap); 127 } 128 129 void 130 vwarnx(fmt, ap) 131 const char *fmt; 132 va_list ap; 133 { 134 (void)fprintf(stderr, "%s: ", __progname); 135 if (fmt != NULL) 136 (void)vfprintf(stderr, fmt, ap); 137 (void)fprintf(stderr, "\n"); 138 } 139