xref: /netbsd-src/sys/stand/copy.c (revision df7f595ecd6efe54ea7c11083e2dbf711cad4b31)
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  */
main(void)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