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copy.c revision 1.1
      1  1.1  cgd /*-
      2  1.1  cgd  * Copyright (c) 1982, 1986, 1988 The Regents of the University of California.
      3  1.1  cgd  * All rights reserved.
      4  1.1  cgd  *
      5  1.1  cgd  * Redistribution and use in source and binary forms, with or without
      6  1.1  cgd  * modification, are permitted provided that the following conditions
      7  1.1  cgd  * are met:
      8  1.1  cgd  * 1. Redistributions of source code must retain the above copyright
      9  1.1  cgd  *    notice, this list of conditions and the following disclaimer.
     10  1.1  cgd  * 2. Redistributions in binary form must reproduce the above copyright
     11  1.1  cgd  *    notice, this list of conditions and the following disclaimer in the
     12  1.1  cgd  *    documentation and/or other materials provided with the distribution.
     13  1.1  cgd  * 3. All advertising materials mentioning features or use of this software
     14  1.1  cgd  *    must display the following acknowledgement:
     15  1.1  cgd  *	This product includes software developed by the University of
     16  1.1  cgd  *	California, Berkeley and its contributors.
     17  1.1  cgd  * 4. Neither the name of the University nor the names of its contributors
     18  1.1  cgd  *    may be used to endorse or promote products derived from this software
     19  1.1  cgd  *    without specific prior written permission.
     20  1.1  cgd  *
     21  1.1  cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  1.1  cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  1.1  cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  1.1  cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  1.1  cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  1.1  cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  1.1  cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  1.1  cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  1.1  cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  1.1  cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  1.1  cgd  * SUCH DAMAGE.
     32  1.1  cgd  *
     33  1.1  cgd  *	@(#)copy.c	7.7 (Berkeley) 5/21/91
     34  1.1  cgd  */
     35  1.1  cgd 
     36  1.1  cgd #define	BSIZE	10240
     37  1.1  cgd 
     38  1.1  cgd /*
     39  1.1  cgd  * Copy from from to to.  Intended for use in system installation.
     40  1.1  cgd  */
     41  1.1  cgd main()
     42  1.1  cgd {
     43  1.1  cgd 	extern int errno;
     44  1.1  cgd 	register int from, to, record, rcc, wcc, bsize = BSIZE;
     45  1.1  cgd 	char buf[BSIZE];
     46  1.1  cgd 
     47  1.1  cgd 	from = getfile("From", 0);
     48  1.1  cgd 	to = getfile("To", 1);
     49  1.1  cgd 	for (record = 0;; ++record) {
     50  1.1  cgd 		if (!(rcc = read(from, buf, bsize)))
     51  1.1  cgd 			break;
     52  1.1  cgd 		if (rcc < 0) {
     53  1.1  cgd 			printf("Record %d: read error, errno=%d\n",
     54  1.1  cgd 			    record, errno);
     55  1.1  cgd 			break;
     56  1.1  cgd 		}
     57  1.1  cgd 		if (rcc != bsize) {
     58  1.1  cgd 			if (record == 0) {
     59  1.1  cgd 				bsize = rcc;
     60  1.1  cgd 				printf("Block size set from input; %d bytes\n",
     61  1.1  cgd 				    bsize);
     62  1.1  cgd 			} else
     63  1.1  cgd 				printf("Record %d: read short; expected %d, got %d\n",
     64  1.1  cgd 				    record, bsize, rcc);
     65  1.1  cgd 		}
     66  1.1  cgd #ifdef vax
     67  1.1  cgd 		/* For bug in ht driver. */
     68  1.1  cgd 		if (rcc > bsize)
     69  1.1  cgd 			rcc = bsize;
     70  1.1  cgd #endif
     71  1.1  cgd 		if ((wcc = write(to, buf, rcc)) < 0) {
     72  1.1  cgd 			printf("Record %d: write error: errno=%d\n",
     73  1.1  cgd 			    record, errno);
     74  1.1  cgd 			break;
     75  1.1  cgd 		}
     76  1.1  cgd 		if (wcc < rcc) {
     77  1.1  cgd 			printf("Record %d: write short; expected %d, got %d\n",
     78  1.1  cgd 			    record, rcc, wcc);
     79  1.1  cgd 			break;
     80  1.1  cgd 		}
     81  1.1  cgd 	}
     82  1.1  cgd 	printf("copy completed: %d records copied\n", record);
     83  1.1  cgd }
     84