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copy.c revision 1.8 
      1 /*	$NetBSD: copy.c,v 1.8 1998/09/13 15:19:13 christos 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1993\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)copy.c	8.1 (Berkeley) 6/11/93";
     45 #else
     46 __RCSID("$NetBSD: copy.c,v 1.8 1998/09/13 15:19:13 christos Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #define	BSIZE	10240
     51 
     52 /*
     53  * Copy from from to to.  Intended for use in system installation.
     54  */
     55 main()
     56 {
     57 	extern int errno;
     58 	register int from, to, record, rcc, wcc, bsize = BSIZE;
     59 	char buf[BSIZE];
     60 
     61 	from = getfile("From", 0);
     62 	to = getfile("To", 1);
     63 	for (record = 0;; ++record) {
     64 		if (!(rcc = read(from, buf, bsize)))
     65 			break;
     66 		if (rcc < 0) {
     67 			printf("Record %d: read error, errno=%d\n",
     68 			    record, errno);
     69 			break;
     70 		}
     71 		if (rcc != bsize) {
     72 			if (record == 0) {
     73 				bsize = rcc;
     74 				printf("Block size set from input; %d bytes\n",
     75 				    bsize);
     76 			} else
     77 				printf("Record %d: read short; expected %d, got %d\n",
     78 				    record, bsize, rcc);
     79 		}
     80 #ifdef vax
     81 		/* For bug in ht driver. */
     82 		if (rcc > bsize)
     83 			rcc = bsize;
     84 #endif
     85 		if ((wcc = write(to, buf, rcc)) < 0) {
     86 			printf("Record %d: write error: errno=%d\n",
     87 			    record, errno);
     88 			break;
     89 		}
     90 		if (wcc < rcc) {
     91 			printf("Record %d: write short; expected %d, got %d\n",
     92 			    record, rcc, wcc);
     93 			break;
     94 		}
     95 	}
     96 	printf("copy completed: %d records copied\n", record);
     97 }
     98