xref: /openbsd-src/usr.bin/tail/misc.c (revision a4afd6dad3fba28f80e70208181c06c482259988)
1 /*	$OpenBSD: misc.c,v 1.2 1996/06/26 05:40:16 deraadt Exp $	*/
2 
3 /*-
4  * Copyright (c) 1991, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Edward Sze-Tyan Wang.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the University of
21  *	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #ifndef lint
40 #if 0
41 static char sccsid[] = "@(#)misc.c	8.1 (Berkeley) 6/6/93";
42 #endif
43 static char rcsid[] = "$OpenBSD: misc.c,v 1.2 1996/06/26 05:40:16 deraadt Exp $";
44 #endif /* not lint */
45 
46 #include <sys/types.h>
47 #include <sys/stat.h>
48 #include <errno.h>
49 #include <unistd.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
53 #include "extern.h"
54 
55 void
56 ierr()
57 {
58 	err(0, "%s: %s", fname, strerror(errno));
59 }
60 
61 void
62 oerr()
63 {
64 	err(1, "stdout: %s", strerror(errno));
65 }
66 
67 #if __STDC__
68 #include <stdarg.h>
69 #else
70 #include <varargs.h>
71 #endif
72 
73 void
74 #if __STDC__
75 err(int fatal, const char *fmt, ...)
76 #else
77 err(fatal, fmt, va_alist)
78 	int fatal;
79 	char *fmt;
80 	va_dcl
81 #endif
82 {
83 	va_list ap;
84 #if __STDC__
85 	va_start(ap, fmt);
86 #else
87 	va_start(ap);
88 #endif
89 	(void)fprintf(stderr, "tail: ");
90 	(void)vfprintf(stderr, fmt, ap);
91 	va_end(ap);
92 	(void)fprintf(stderr, "\n");
93 	if (fatal)
94 		exit(1);
95 	rval = 1;
96 }
97