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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #include <err.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <stdarg.h> 35 #include <errno.h> 36 37 extern const char* __progname; 38 39 __noreturn void 40 err(int eval, const char *fmt, ...) 41 { 42 va_list ap; 43 44 va_start(ap, fmt); 45 verr(eval, fmt, ap); 46 va_end(ap); 47 } 48 49 __noreturn void 50 errx(int eval, const char *fmt, ...) 51 { 52 va_list ap; 53 54 va_start(ap, fmt); 55 verrx(eval, fmt, ap); 56 va_end(ap); 57 } 58 59 __noreturn void 60 verr(int eval, const char *fmt, va_list ap) 61 { 62 int sverrno; 63 64 sverrno = errno; 65 (void)fprintf(stderr, "%s: ", __progname); 66 if (fmt != NULL) { 67 (void)vfprintf(stderr, fmt, ap); 68 (void)fprintf(stderr, ": "); 69 } 70 (void)fprintf(stderr, "%s\n", strerror(sverrno)); 71 exit(eval); 72 } 73 74 75 __noreturn void 76 verrx(int eval, const char *fmt, va_list ap) 77 { 78 (void)fprintf(stderr, "%s: ", __progname); 79 if (fmt != NULL) 80 (void)vfprintf(stderr, fmt, ap); 81 (void)fprintf(stderr, "\n"); 82 exit(eval); 83 } 84 85 void 86 warn(const char *fmt, ...) 87 { 88 va_list ap; 89 90 va_start(ap, fmt); 91 vwarn(fmt, ap); 92 va_end(ap); 93 } 94 95 void 96 warnx(const char *fmt, ...) 97 { 98 va_list ap; 99 100 va_start(ap, fmt); 101 vwarnx(fmt, ap); 102 va_end(ap); 103 } 104 105 void 106 vwarn(const char *fmt, va_list ap) 107 { 108 int sverrno; 109 110 sverrno = errno; 111 (void)fprintf(stderr, "%s: ", __progname); 112 if (fmt != NULL) { 113 (void)vfprintf(stderr, fmt, ap); 114 (void)fprintf(stderr, ": "); 115 } 116 (void)fprintf(stderr, "%s\n", strerror(sverrno)); 117 } 118 119 void 120 vwarnx(const char *fmt, va_list ap) 121 { 122 (void)fprintf(stderr, "%s: ", __progname); 123 if (fmt != NULL) 124 (void)vfprintf(stderr, fmt, ap); 125 (void)fprintf(stderr, "\n"); 126 } 127
