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copy.c revision 1.7 
      1 /*-
      2  * Copyright (c) 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 copyright[] =
     36 "@(#) Copyright (c) 1993\n\
     37 	The Regents of the University of California.  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 /*static char sccsid[] = "from: @(#)copy.c	8.1 (Berkeley) 6/11/93";*/
     42 static char rcsid[] = "$NetBSD: copy.c,v 1.7 1996/10/12 22:14:10 christos Exp $";
     43 #endif /* not lint */
     44 
     45 #define	BSIZE	10240
     46 
     47 /*
     48  * Copy from from to to.  Intended for use in system installation.
     49  */
     50 main()
     51 {
     52 	extern int errno;
     53 	register int from, to, record, rcc, wcc, bsize = BSIZE;
     54 	char buf[BSIZE];
     55 
     56 	from = getfile("From", 0);
     57 	to = getfile("To", 1);
     58 	for (record = 0;; ++record) {
     59 		if (!(rcc = read(from, buf, bsize)))
     60 			break;
     61 		if (rcc < 0) {
     62 			printf("Record %d: read error, errno=%d\n",
     63 			    record, errno);
     64 			break;
     65 		}
     66 		if (rcc != bsize) {
     67 			if (record == 0) {
     68 				bsize = rcc;
     69 				printf("Block size set from input; %d bytes\n",
     70 				    bsize);
     71 			} else
     72 				printf("Record %d: read short; expected %d, got %d\n",
     73 				    record, bsize, rcc);
     74 		}
     75 #ifdef vax
     76 		/* For bug in ht driver. */
     77 		if (rcc > bsize)
     78 			rcc = bsize;
     79 #endif
     80 		if ((wcc = write(to, buf, rcc)) < 0) {
     81 			printf("Record %d: write error: errno=%d\n",
     82 			    record, errno);
     83 			break;
     84 		}
     85 		if (wcc < rcc) {
     86 			printf("Record %d: write short; expected %d, got %d\n",
     87 			    record, rcc, wcc);
     88 			break;
     89 		}
     90 	}
     91 	printf("copy completed: %d records copied\n", record);
     92 }
     93