sys/stand/copy.c

   1 /*      $NetBSD: copy.c,v 1.13 2005/12/11 12:25:20 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1993\n\
  35         The Regents of the University of California.  All rights reserved.\n");
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)copy.c      8.1 (Berkeley) 6/11/93";
  41 #else
  42 __RCSID("$NetBSD: copy.c,v 1.13 2005/12/11 12:25:20 christos Exp $");
  43 #endif
  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(void)
  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 }