rom/expansion/adddosnode.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Add a DOS device to the system.
   6     Lang: English
   7 */
   8 #include "expansion_intern.h"
   9 #include <exec/io.h>
  10 #include <dos/filesystem.h>
  11 #include <proto/exec.h>
  12 #include <proto/dos.h>
  13
  14 /*****************************************************************************
  15
  16     NAME */
  17 #include <dos/filehandler.h>
  18 #include <dos/dosextens.h>
  19 #include <libraries/expansion.h>
  20 #include <proto/expansion.h>
  21
  22         AROS_LH3(BOOL, AddDosNode,
  23
  24 /*  SYNOPSIS */
  25         AROS_LHA(LONG               , bootPri, D0),
  26         AROS_LHA(ULONG              , flags, D1),
  27         AROS_LHA(struct DeviceNode *, deviceNode, A0),
  28
  29 /*  LOCATION */
  30         struct ExpansionBase *, ExpansionBase, 25, Expansion)
  31
  32 /*  FUNCTION
  33         This is the old function for adding devices to the system. It
  34         is recommended that you use the AddBootNode() function.
  35
  36         Unlike AddBootNode() you will have to add a BootNode to the
  37         system yourself.
  38
  39     INPUTS
  40         bootPri     -   The priority of the device (-128 --> 127).
  41         flags       -   Flags (ADNF_STARTPROC etc)
  42         deviceNode  -   The device to add to the system.
  43
  44     RESULT
  45         non-zero if everything succeeded, zero on failure.
  46
  47     NOTES
  48         It is much better to use AddBootNode() as it will also
  49         construct the BootNode structure, and add it to the system.
  50
  51     EXAMPLE
  52         //  Add a bootable disk to the system. This will start a
  53         //  file handler process immediately.
  54
  55         if( AddDosNode( 0, ADNF_STARTPROC, MakeDosNode( paramPacket )))
  56         {
  57             // AddDosNode() ok
  58         }
  59
  60     BUGS
  61
  62     SEE ALSO
  63         AddBootNode(), MakeDosNode()
  64
  65     INTERNALS
  66
  67     HISTORY
  68         19-05-07    sonic   Rewritten to use dos.library for starting up
  69                             a handler.
  70         27-11-96    digulla automatically created from
  71                             expansion_lib.fd and clib/expansion_protos.h
  72
  73 *****************************************************************************/
  74 {
  75     AROS_LIBFUNC_INIT
  76
  77     struct DosLibrary *DOSBase;
  78     BOOL ok = FALSE;
  79
  80     DOSBase = (struct DosLibrary *)OpenLibrary("dos.library", 0);
  81
  82     /* Aha, DOS is up and running... */
  83     if (DOSBase != NULL)
  84     {
  85         /* We should add the filesystem to the DOS device list. It will
  86            be usable from this point onwards.
  87
  88            The DeviceNode structure that was passed to us can be added
  89            to the DOS list as it is, and we will let DOS start the
  90            filesystem task if it is necessary to do so.
  91         */
  92
  93         ok = AddDosEntry((struct DosList *)deviceNode);
  94         /* Have we been asked to start a filesystem, and there is none already */
  95         if (flags & ADNF_STARTPROC)
  96         {
  97             /* Yes, better do so.
  98
  99                DeviceProc() will see that dn_Device for this node is NULL
 100                and start up the handler. */
 101             DeviceProc((struct Device *)deviceNode);
 102         }
 103
 104         CloseLibrary((struct Library *)DOSBase);
 105     }
 106
 107     return ok;
 108
 109     AROS_LIBFUNC_EXIT
 110 } /* AddDosNode */