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
init_toslib(char * arg0)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
error(int err,char * frm)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
fatal(int err,char * frm)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
errmsg(int err,char * frm,va_list args)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