xref: /freebsd/usr.bin/tail/misc.c (revision 9b50d9027575220cb6dd09b3e62f03f511e908b8)
19b50d902SRodney W. Grimes /*-
29b50d902SRodney W. Grimes  * Copyright (c) 1991, 1993
39b50d902SRodney W. Grimes  *	The Regents of the University of California.  All rights reserved.
49b50d902SRodney W. Grimes  *
59b50d902SRodney W. Grimes  * This code is derived from software contributed to Berkeley by
69b50d902SRodney W. Grimes  * Edward Sze-Tyan Wang.
79b50d902SRodney W. Grimes  *
89b50d902SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
99b50d902SRodney W. Grimes  * modification, are permitted provided that the following conditions
109b50d902SRodney W. Grimes  * are met:
119b50d902SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
129b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
139b50d902SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
149b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
159b50d902SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
169b50d902SRodney W. Grimes  * 3. All advertising materials mentioning features or use of this software
179b50d902SRodney W. Grimes  *    must display the following acknowledgement:
189b50d902SRodney W. Grimes  *	This product includes software developed by the University of
199b50d902SRodney W. Grimes  *	California, Berkeley and its contributors.
209b50d902SRodney W. Grimes  * 4. Neither the name of the University nor the names of its contributors
219b50d902SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
229b50d902SRodney W. Grimes  *    without specific prior written permission.
239b50d902SRodney W. Grimes  *
249b50d902SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
259b50d902SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
269b50d902SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
279b50d902SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
289b50d902SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
299b50d902SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
309b50d902SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
319b50d902SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
329b50d902SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
339b50d902SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
349b50d902SRodney W. Grimes  * SUCH DAMAGE.
359b50d902SRodney W. Grimes  */
369b50d902SRodney W. Grimes 
379b50d902SRodney W. Grimes #ifndef lint
389b50d902SRodney W. Grimes static char sccsid[] = "@(#)misc.c	8.1 (Berkeley) 6/6/93";
399b50d902SRodney W. Grimes #endif /* not lint */
409b50d902SRodney W. Grimes 
419b50d902SRodney W. Grimes #include <sys/types.h>
429b50d902SRodney W. Grimes #include <sys/stat.h>
439b50d902SRodney W. Grimes #include <errno.h>
449b50d902SRodney W. Grimes #include <unistd.h>
459b50d902SRodney W. Grimes #include <stdio.h>
469b50d902SRodney W. Grimes #include <stdlib.h>
479b50d902SRodney W. Grimes #include <string.h>
489b50d902SRodney W. Grimes #include "extern.h"
499b50d902SRodney W. Grimes 
509b50d902SRodney W. Grimes void
519b50d902SRodney W. Grimes ierr()
529b50d902SRodney W. Grimes {
539b50d902SRodney W. Grimes 	err(0, "%s: %s", fname, strerror(errno));
549b50d902SRodney W. Grimes }
559b50d902SRodney W. Grimes 
569b50d902SRodney W. Grimes void
579b50d902SRodney W. Grimes oerr()
589b50d902SRodney W. Grimes {
599b50d902SRodney W. Grimes 	err(1, "stdout: %s", strerror(errno));
609b50d902SRodney W. Grimes }
619b50d902SRodney W. Grimes 
629b50d902SRodney W. Grimes #if __STDC__
639b50d902SRodney W. Grimes #include <stdarg.h>
649b50d902SRodney W. Grimes #else
659b50d902SRodney W. Grimes #include <varargs.h>
669b50d902SRodney W. Grimes #endif
679b50d902SRodney W. Grimes 
689b50d902SRodney W. Grimes void
699b50d902SRodney W. Grimes #if __STDC__
709b50d902SRodney W. Grimes err(int fatal, const char *fmt, ...)
719b50d902SRodney W. Grimes #else
729b50d902SRodney W. Grimes err(fatal, fmt, va_alist)
739b50d902SRodney W. Grimes 	int fatal;
749b50d902SRodney W. Grimes 	char *fmt;
759b50d902SRodney W. Grimes 	va_dcl
769b50d902SRodney W. Grimes #endif
779b50d902SRodney W. Grimes {
789b50d902SRodney W. Grimes 	va_list ap;
799b50d902SRodney W. Grimes #if __STDC__
809b50d902SRodney W. Grimes 	va_start(ap, fmt);
819b50d902SRodney W. Grimes #else
829b50d902SRodney W. Grimes 	va_start(ap);
839b50d902SRodney W. Grimes #endif
849b50d902SRodney W. Grimes 	(void)fprintf(stderr, "tail: ");
859b50d902SRodney W. Grimes 	(void)vfprintf(stderr, fmt, ap);
869b50d902SRodney W. Grimes 	va_end(ap);
879b50d902SRodney W. Grimes 	(void)fprintf(stderr, "\n");
889b50d902SRodney W. Grimes 	if (fatal)
899b50d902SRodney W. Grimes 		exit(1);
909b50d902SRodney W. Grimes 	rval = 1;
919b50d902SRodney W. Grimes }
92