4.3BSD - /usr/src/sys/stand/copy.c

   1: /*
   2:  * Copyright (c) 1982, 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)copy.c	7.1 (Berkeley) 6/5/86
   7:  */
   8: 
   9: /*
  10:  * Copy from to in 10K units.
  11:  * Intended for use in system
  12:  * installation.
  13:  */
  14: main()
  15: {
  16:     int from, to;
  17:     char fbuf[50], tbuf[50];
  18:     char buffer[10240];
  19:     register int record;
  20:     extern int errno;
  21: 
  22:     from = getdev("From", fbuf, 0);
  23:     to = getdev("To", tbuf, 1);
  24:     for (record = 0; ; record++) {
  25:         int rcc, wcc;
  26: 
  27:         rcc = read(from, buffer, sizeof (buffer));
  28:         if (rcc == 0)
  29:             break;
  30:         if (rcc < 0) {
  31:             printf("Record %d: read error, errno=%d\n",
  32:                 record, errno);
  33:             break;
  34:         }
  35:         if (rcc < sizeof (buffer))
  36:             printf("Record %d: read short; expected %d, got %d\n",
  37:                 record, sizeof (buffer), rcc);
  38:         /*
  39: 		 * For bug in ht driver.
  40: 		 */
  41:         if (rcc > sizeof (buffer))
  42:             rcc = sizeof (buffer);
  43:         wcc = write(to, buffer, rcc);
  44:         if (wcc < 0) {
  45:             printf("Record %d: write error: errno=%d\n",
  46:                 record, errno);
  47:             break;
  48:         }
  49:         if (wcc < rcc) {
  50:             printf("Record %d: write short; expected %d, got %d\n",
  51:                 record, rcc, wcc);
  52:             break;
  53:         }
  54:     }
  55:     printf("Copy completed: %d records copied\n", record);
  56:     /* can't call exit here */
  57: }
  58: 
  59: getdev(prompt, buf, mode)
  60:     char *prompt, *buf;
  61:     int mode;
  62: {
  63:     register int i;
  64: 
  65:     do {
  66:         printf("%s: ", prompt);
  67:         gets(buf);
  68:         i = open(buf, mode);
  69:     } while (i <= 0);
  70:     return (i);
  71: }

Defined functions