rom/dos/nextdosentry.c

   1 /*
   2     Copyright © 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include <dos/dosextens.h>
   9 #include "dos_intern.h"
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14 #include <proto/dos.h>
  15
  16         AROS_LH2I(struct DosList *, NextDosEntry,
  17
  18 /*  SYNOPSIS */
  19         AROS_LHA(struct DosList *, dlist, D1),
  20         AROS_LHA(ULONG           , flags, D2),
  21
  22 /*  LOCATION */
  23         struct DosLibrary *, DOSBase, 115, Dos)
  24
  25 /*  FUNCTION
  26         Looks for the next dos list entry with the right type. The list
  27         must be locked for this.
  28
  29     INPUTS
  30         dlist - the value given by LockDosList() or the last call to
  31                 FindDosEntry().
  32         flags - the same flags as given to LockDosList() or a subset
  33                 of them.
  34
  35     RESULT
  36         Pointer to dos list entry found or NULL if the are no more entries.
  37
  38     NOTES
  39
  40     EXAMPLE
  41
  42     BUGS
  43
  44     SEE ALSO
  45
  46     INTERNALS
  47
  48 *****************************************************************************/
  49 {
  50     AROS_LIBFUNC_INIT
  51
  52     static const ULONG flagarray[]=
  53     { 0, LDF_DEVICES, LDF_ASSIGNS, LDF_VOLUMES, LDF_ASSIGNS, LDF_ASSIGNS };
  54
  55     /* Follow the list */
  56     for(;;)
  57     {
  58         /* Get next entry. Return NULL if there is none. */
  59         dlist = BADDR(dlist->dol_Next);
  60         if(dlist==NULL)
  61             return NULL;
  62
  63         /* Check type */
  64         if(flags&flagarray[dlist->dol_Type+1])
  65             return dlist;
  66     }
  67     AROS_LIBFUNC_EXIT
  68 } /* NextDosEntry */