1217309Snwhitehorn/*	$NetBSD: copy.c,v 1.13 2005/12/11 12:25:20 christos Exp $	*/
2217309Snwhitehorn
3217309Snwhitehorn/*-
4217309Snwhitehorn * Copyright (c) 1993
5217309Snwhitehorn *	The Regents of the University of California.  All rights reserved.
6217309Snwhitehorn *
7217309Snwhitehorn * Redistribution and use in source and binary forms, with or without
8217309Snwhitehorn * modification, are permitted provided that the following conditions
9217309Snwhitehorn * are met:
10217309Snwhitehorn * 1. Redistributions of source code must retain the above copyright
11217309Snwhitehorn *    notice, this list of conditions and the following disclaimer.
12217309Snwhitehorn * 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
40static char sccsid[] = "@(#)copy.c	8.1 (Berkeley) 6/11/93";
41#else
42__RCSID("$NetBSD: copy.c,v 1.13 2005/12/11 12:25:20 christos 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 */
51main(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