Home | History | Annotate | Line # | Download | only in dumplfs
misc.c revision 1.1 
      1 /*-
      2  * Copyright (c) 1991, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 /*static char sccsid[] = "from: @(#)misc.c	8.1 (Berkeley) 6/5/93";*/
     36 static char *rcsid = "$Id: misc.c,v 1.1 1994/06/08 18:58:52 mycroft Exp $";
     37 #endif /* not lint */
     38 
     39 #include <sys/types.h>
     40 #include <unistd.h>
     41 #include <errno.h>
     42 #include <stdlib.h>
     43 #include <stdio.h>
     44 #include <string.h>
     45 #include "extern.h"
     46 
     47 void
     48 get(fd, off, p, len)
     49 	int fd;
     50 	off_t off;
     51 	void *p;
     52 	size_t len;
     53 {
     54 	int rbytes;
     55 
     56 	if (lseek(fd, off, SEEK_SET) < 0)
     57 		err("%s: %s", special, strerror(errno));
     58 	if ((rbytes = read(fd, p, len)) < 0)
     59 		err("%s: %s", special, strerror(errno));
     60 	if (rbytes != len)
     61 		err("%s: short read (%d, not %d)", special, rbytes, len);
     62 }
     63 
     64 #if __STDC__
     65 #include <stdarg.h>
     66 #else
     67 #include <varargs.h>
     68 #endif
     69 
     70 void
     71 #if __STDC__
     72 err(const char *fmt, ...)
     73 #else
     74 err(fmt, va_alist)
     75 	char *fmt;
     76 	va_dcl
     77 #endif
     78 {
     79 	va_list ap;
     80 #if __STDC__
     81 	va_start(ap, fmt);
     82 #else
     83 	va_start(ap);
     84 #endif
     85 	(void)fprintf(stderr, "dumplfs: ");
     86 	(void)vfprintf(stderr, fmt, ap);
     87 	va_end(ap);
     88 	(void)fprintf(stderr, "\n");
     89 	exit(1);
     90 	/* NOTREACHED */
     91 }
     92