/*      $NetBSD: copy.c,v 1.14 2009/03/18 10:22:45 cegger Exp $ */

/*-
* Copyright (c) 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1993\n\
       The Regents of the University of California.  All rights reserved.\n");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)copy.c      8.1 (Berkeley) 6/11/93";
#else
__RCSID("$NetBSD: copy.c,v 1.14 2009/03/18 10:22:45 cegger Exp $");
#endif
#endif /* not lint */

#define BSIZE   10240

/*
* Copy from from to to.  Intended for use in system installation.
*/
main(void)
{
       extern int errno;
       register int from, to, record, rcc, wcc, bsize = BSIZE;
       char buf[BSIZE];

       from = getfile("From", 0);
       to = getfile("To", 1);
       for (record = 0;; ++record) {
               if (!(rcc = read(from, buf, bsize)))
                       break;
               if (rcc < 0) {
                       printf("Record %d: read error, errno=%d\n",
                           record, errno);
                       break;
               }
               if (rcc != bsize) {
                       if (record == 0) {
                               bsize = rcc;
                               printf("Block size set from input; %d bytes\n",
                                   bsize);
                       } else
                               printf("Record %d: read short; expected %d, got %d\n",
                                   record, bsize, rcc);
               }
#ifdef __vax__
               /* For bug in ht driver. */
               if (rcc > bsize)
                       rcc = bsize;
#endif
               if ((wcc = write(to, buf, rcc)) < 0) {
                       printf("Record %d: write error: errno=%d\n",
                           record, errno);
                       break;
               }
               if (wcc < rcc) {
                       printf("Record %d: write short; expected %d, got %d\n",
                           record, rcc, wcc);
                       break;
               }
       }
       printf("copy completed: %d records copied\n", record);
}