1 /* $Id: compat_err.c,v 1.5 2020/06/15 01:37:14 schwarze Exp $ */ 2 /* 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 #include "config.h" 31 32 #include <errno.h> 33 #include <stdarg.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 38 static void vwarni(const char *, va_list); 39 static void vwarnxi(const char *, va_list); 40 41 static void 42 vwarnxi(const char *fmt, va_list ap) 43 { 44 fprintf(stderr, "%s: ", getprogname()); 45 if (fmt != NULL) 46 vfprintf(stderr, fmt, ap); 47 } 48 49 static void 50 vwarni(const char *fmt, va_list ap) 51 { 52 int sverrno; 53 54 sverrno = errno; 55 vwarnxi(fmt, ap); 56 if (fmt != NULL) 57 fputs(": ", stderr); 58 fprintf(stderr, "%s\n", strerror(sverrno)); 59 } 60 61 void 62 err(int eval, const char *fmt, ...) 63 { 64 va_list ap; 65 66 va_start(ap, fmt); 67 vwarni(fmt, ap); 68 va_end(ap); 69 exit(eval); 70 } 71 72 void 73 errx(int eval, const char *fmt, ...) 74 { 75 va_list ap; 76 77 va_start(ap, fmt); 78 vwarnxi(fmt, ap); 79 va_end(ap); 80 fputc('\n', stderr); 81 exit(eval); 82 } 83 84 void 85 warn(const char *fmt, ...) 86 { 87 va_list ap; 88 89 va_start(ap, fmt); 90 vwarni(fmt, ap); 91 va_end(ap); 92 } 93 94 void 95 warnx(const char *fmt, ...) 96 { 97 va_list ap; 98 99 va_start(ap, fmt); 100 vwarnxi(fmt, ap); 101 va_end(ap); 102 fputc('\n', stderr); 103 } 104