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copy.c revision 1.3 
      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 /* From:
     42       static char sccsid[] = "@(#)copy.c	8.1 (Berkeley) 6/11/93"; */
     43 static char rcsid[] = "$Id: copy.c,v 1.3 1994/01/26 03:21:42 cgd Exp $";
     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()
     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