1 /* $NetBSD: error.c,v 1.3 2009/03/14 15:36:04 dsl Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Waldi Ravens. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Waldi Ravens. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <stdio.h> 34 #include <osbind.h> 35 #include <stdarg.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <unistd.h> 39 #include "libtos.h" 40 41 static void errmsg PROTO((int, char *, va_list)); 42 43 const char *program_name; 44 45 void 46 init_toslib(char *arg0) 47 { 48 char *p; 49 50 if (isatty(STDERR_FILENO) && (!*arg0 || !getenv("STDERR"))) 51 (void)Fforce(STDERR_FILENO, -1); 52 53 if (!(p = strrchr(arg0, '/'))) 54 p = strrchr(arg0, '\\'); 55 program_name = p ? ++p : arg0; 56 } 57 58 void 59 error(int err, char *frm) 60 { 61 va_list args; 62 63 va_start(args, frm); 64 errmsg(err, frm, args); 65 va_end(args); 66 } 67 68 void 69 fatal(int err, char *frm) 70 { 71 va_list args; 72 73 va_start(args, frm); 74 errmsg(err, frm, args); 75 va_end(args); 76 77 xexit(EXIT_FAILURE); 78 } 79 80 static void 81 errmsg(int err, char *frm, va_list args) 82 { 83 extern const char *program_name; 84 85 eprintf("%s: ", program_name); 86 veprintf(frm, args); 87 88 if (err != -1) { 89 char *es = strerror(err); 90 if (es) 91 eprintf(": %s", es); 92 else 93 eprintf(": unknown error %d", err); 94 } 95 96 eprintf("\n"); 97 } 98