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      1 /*	$NetBSD: copy.c,v 1.14 2009/03/18 10:22:45 cegger Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1993
      5  *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1993\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     36 #endif /* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)copy.c	8.1 (Berkeley) 6/11/93";
     41 #else
     42 __RCSID("$NetBSD: copy.c,v 1.14 2009/03/18 10:22:45 cegger Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #define	BSIZE	10240
     47 
     48 /*
     49  * Copy from from to to.  Intended for use in system installation.
     50  */
     51 main(void)
     52 {
     53 	extern int errno;
     54 	register int from, to, record, rcc, wcc, bsize = BSIZE;
     55 	char buf[BSIZE];
     56 
     57 	from = getfile("From", 0);
     58 	to = getfile("To", 1);
     59 	for (record = 0;; ++record) {
     60 		if (!(rcc = read(from, buf, bsize)))
     61 			break;
     62 		if (rcc < 0) {
     63 			printf("Record %d: read error, errno=%d\n",
     64 			    record, errno);
     65 			break;
     66 		}
     67 		if (rcc != bsize) {
     68 			if (record == 0) {
     69 				bsize = rcc;
     70 				printf("Block size set from input; %d bytes\n",
     71 				    bsize);
     72 			} else
     73 				printf("Record %d: read short; expected %d, got %d\n",
     74 				    record, bsize, rcc);
     75 		}
     76 #ifdef __vax__
     77 		/* For bug in ht driver. */
     78 		if (rcc > bsize)
     79 			rcc = bsize;
     80 #endif
     81 		if ((wcc = write(to, buf, rcc)) < 0) {
     82 			printf("Record %d: write error: errno=%d\n",
     83 			    record, errno);
     84 			break;
     85 		}
     86 		if (wcc < rcc) {
     87 			printf("Record %d: write short; expected %d, got %d\n",
     88 			    record, rcc, wcc);
     89 			break;
     90 		}
     91 	}
     92 	printf("copy completed: %d records copied\n", record);
     93 }
     94