rom/dos/parentoffh.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Lock the directory a file is located in
   6     Lang: english
   7 */
   8
   9 #include <aros/debug.h>
  10 #include "dos_intern.h"
  11 #include <dos/dosasl.h>
  12 #include <proto/exec.h>
  13
  14 /*****************************************************************************
  15
  16     NAME */
  17 #include <proto/dos.h>
  18
  19         AROS_LH1(BPTR, ParentOfFH,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(BPTR, fh, D1),
  23
  24 /*  LOCATION */
  25         struct DosLibrary *, DOSBase, 64, Dos)
  26
  27 /*  FUNCTION
  28         Lock the directory a file is located in.
  29
  30     INPUTS
  31         fh  - Filhandle of which you want to obtain the parent
  32
  33     RESULT
  34         lock - Lock on the parent directory of the filehandle or
  35                NULL for failure.
  36
  37
  38     NOTES
  39
  40     EXAMPLE
  41
  42     BUGS
  43
  44     SEE ALSO
  45         Lock(), UnLock(), ParentDir()
  46
  47     INTERNALS
  48
  49 *****************************************************************************/
  50 {
  51     AROS_LIBFUNC_INIT
  52
  53     struct FileHandle *handle = BADDR(fh);
  54     D(bug("[ParentOfFH] fh=%x\n", handle));
  55     return (BPTR)dopacket1(DOSBase, NULL, handle->fh_Type, ACTION_PARENT_FH, handle->fh_Arg1);
  56
  57     AROS_LIBFUNC_EXIT
  58
  59 } /* ParentOfFH */