rom/dos/samedevice.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include "dos_intern.h"
   9
  10 /*****************************************************************************
  11
  12     NAME */
  13 #include <proto/dos.h>
  14
  15         AROS_LH2(BOOL, SameDevice,
  16
  17 /*  SYNOPSIS */
  18         AROS_LHA(BPTR, lock1, D1),
  19         AROS_LHA(BPTR, lock2, D2),
  20
  21 /*  LOCATION */
  22         struct DosLibrary *, DOSBase, 164, Dos)
  23
  24 /*  FUNCTION
  25
  26     INPUTS
  27
  28     RESULT
  29
  30     NOTES
  31
  32     EXAMPLE
  33
  34     BUGS
  35
  36     SEE ALSO
  37
  38     INTERNALS
  39
  40 *****************************************************************************/
  41 {
  42     AROS_LIBFUNC_INIT
  43
  44     struct FileHandle *fh1, *fh2;
  45
  46     if (lock1 == NULL || lock2 == NULL)
  47         return DOSFALSE;
  48
  49     fh1 = (struct FileHandle *)BADDR(lock1);
  50     fh2 = (struct FileHandle *)BADDR(lock2);
  51
  52     /* XXX this isn't enough. two filesystems of the same type are different
  53      * "devices" but will have the same value for fh_Device. there's no good
  54      * way to fix (the only bad way involves hoops with NameFromLock() */
  55     if (fh1->fh_Device == fh2->fh_Device)
  56         return DOSTRUE;
  57
  58
  59     return DOSFALSE;
  60     AROS_LIBFUNC_EXIT
  61 } /* SameDevice */