rom/dos/startnotify.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8 #include "dos_intern.h"
   9 #include <string.h>
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14
  15 #include <aros/debug.h>
  16 #include <dos/notify.h>
  17 #include <proto/dos.h>
  18
  19         AROS_LH1(BOOL, StartNotify,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(struct NotifyRequest *, notify, D1),
  23
  24 /*  LOCATION */
  25         struct DosLibrary *, DOSBase, 148, Dos)
  26
  27 /*  FUNCTION
  28
  29     Send a notification request to a filesystem. You will then be notified
  30     whenever the file (or directory) changes.
  31
  32     INPUTS
  33
  34     notify  --  a notification request for the file or directory to monitor
  35
  36     RESULT
  37
  38     Success/failure indicator.
  39
  40     NOTES
  41
  42     The file or directory connected to a notification request does not have
  43     to exist at the time of calling StartNotify().
  44     The NotifyRequest used with this function should not be altered while
  45     active.
  46
  47     EXAMPLE
  48
  49     BUGS
  50
  51     SEE ALSO
  52
  53     EndNotify(), <dos/notify.h>
  54
  55     INTERNALS
  56
  57 *****************************************************************************/
  58 {
  59     AROS_LIBFUNC_INIT
  60     AROS_LIBBASE_EXT_DECL(struct DosLibrary *,DOSBase)
  61
  62     struct IOFileSys iofs;
  63     struct FileHandle *dir;
  64
  65     /* Prepare I/O request. */
  66     InitIOFS(&iofs, FSA_ADD_NOTIFY, DOSBase);
  67
  68     iofs.io_Union.io_NOTIFY.io_NotificationRequest = notify;
  69
  70     notify->nr_MsgCount = 0;
  71
  72     if (strchr(notify->nr_Name, ':') != NULL)
  73     {
  74         DoName(&iofs, notify->nr_Name, DOSBase);
  75     }
  76     else
  77     {
  78         dir = BADDR(CurrentDir(NULL));
  79         CurrentDir(MKBADDR(dir));               /* Set back the current dir */
  80
  81         if (dir == NULL)
  82         {
  83             return DOSFALSE;
  84         }
  85
  86         iofs.IOFS.io_Device = dir->fh_Device;
  87         iofs.IOFS.io_Unit = dir->fh_Unit;
  88
  89         /* Save device for EndNotify() purposes */
  90         notify->nr_Device = dir->fh_Device;
  91
  92         if (iofs.IOFS.io_Device == NULL)
  93         {
  94             return DOSFALSE;
  95         }
  96
  97         DosDoIO(&iofs.IOFS);
  98     }
  99
 100     SetIoErr(iofs.io_DosError);
 101
 102     if (iofs.io_DosError != 0)
 103     {
 104         return DOSFALSE;
 105     }
 106
 107     return DOSTRUE;
 108
 109     AROS_LIBFUNC_EXIT
 110 } /* StartNotify */