dmake/msdos/dchdir.c

   1 /* RCS  $Id: dchdir.c,v 1.1.1.1 2000-09-22 15:33:27 hr Exp $
   2 --
   3 -- SYNOPSIS
   4 --      Change directory.
   5 --
   6 -- DESCRIPTION
   7 --  Under DOS change the current drive as well as the current directory.
   8 --
   9 -- AUTHOR
  10 --      Dennis Vadura, dvadura@dmake.wticorp.com
  11 --
  12 -- WWW
  13 --      http://dmake.wticorp.com/
  14 --
  15 -- COPYRIGHT
  16 --      Copyright (c) 1996,1997 by WTI Corp.  All rights reserved.
  17 --
  18 --      This program is NOT free software; you can redistribute it and/or
  19 --      modify it under the terms of the Software License Agreement Provided
  20 --      in the file <distribution-root>/readme/license.txt.
  21 --
  22 -- LOG
  23 --      Use cvs log to obtain detailed change logs.
  24 */
  25
  26 #include <dos.h>
  27 #include "extern.h"
  28
  29 PUBLIC int
  30 dchdir(path)
  31 char *path;
  32 {
  33    int   res;
  34
  35    res = chdir(path);
  36
  37    if (res != -1 && path[1] == ':') {
  38       union REGS  reg;
  39
  40       /* we must change the logged drive, since the chdir worked. */
  41       reg.h.ah = 0x0E;
  42       reg.h.dl = (*path & ~0x20) - 'A' + 1;
  43       intdos(&reg, &reg);
  44    }
  45
  46    return (res);
  47 }