xref: /netbsd-src/usr.bin/tail/misc.c (revision cda4f8f6ee55684e8d311b86c99ea59191e6b74f)
1 /*-
2  * Copyright (c) 1991 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Edward Sze-Tyan Wang.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *	This product includes software developed by the University of
19  *	California, Berkeley and its contributors.
20  * 4. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 #ifndef lint
38 static char sccsid[] = "@(#)misc.c	5.1 (Berkeley) 7/21/91";
39 #endif /* not lint */
40 
41 #include <sys/types.h>
42 #include <sys/stat.h>
43 #include <errno.h>
44 #include <unistd.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include "extern.h"
49 
50 void
51 ierr()
52 {
53 	err("%s: %s", fname, strerror(errno));
54 }
55 
56 void
57 oerr()
58 {
59 	err("stdout: %s", strerror(errno));
60 }
61 
62 #if __STDC__
63 #include <stdarg.h>
64 #else
65 #include <varargs.h>
66 #endif
67 
68 void
69 #if __STDC__
70 err(const char *fmt, ...)
71 #else
72 err(fmt, va_alist)
73 	char *fmt;
74 	va_dcl
75 #endif
76 {
77 	va_list ap;
78 #if __STDC__
79 	va_start(ap, fmt);
80 #else
81 	va_start(ap);
82 #endif
83 	(void)fprintf(stderr, "tail: ");
84 	(void)vfprintf(stderr, fmt, ap);
85 	va_end(ap);
86 	(void)fprintf(stderr, "\n");
87 	exit(1);
88 	/* NOTREACHED */
89 }
90