rom/dos/parentoffh.c

   1 /*
   2     Copyright © 1995-2013, 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   - Filehandle 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     NOTES
  38
  39     EXAMPLE
  40
  41     BUGS
  42
  43     SEE ALSO
  44         Lock(), UnLock(), ParentDir()
  45
  46     INTERNALS
  47
  48 *****************************************************************************/
  49 {
  50     AROS_LIBFUNC_INIT
  51
  52     struct FileHandle *handle = BADDR(fh);
  53     D(bug("[ParentOfFH] fh=%x\n", handle));
  54     return (BPTR)dopacket1(DOSBase, NULL, handle->fh_Type, ACTION_PARENT_FH, handle->fh_Arg1);
  55
  56     AROS_LIBFUNC_EXIT
  57
  58 } /* ParentOfFH */