rom/dos/inhibit.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5 #include <proto/exec.h>
   6
   7 #include "dos_intern.h"
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12 #include <proto/dos.h>
  13
  14         AROS_LH2(LONG, Inhibit,
  15
  16 /*  SYNOPSIS */
  17         AROS_LHA(CONST_STRPTR, name,  D1),
  18         AROS_LHA(LONG,         onoff, D2),
  19
  20 /*  LOCATION */
  21         struct DosLibrary *, DOSBase, 121, Dos)
  22
  23 /*  FUNCTION
  24
  25     Stop a filesystem from being used.
  26
  27     INPUTS
  28
  29     name   --  Name of the device to inhibit (including a ':')
  30     onoff  --  Specify whether to inhinit (DOSTRUE) or uninhibit (DOSFALSE)
  31                the device
  32
  33     RESULT
  34
  35     A boolean telling whether the action was carried out.
  36
  37     NOTES
  38
  39     After uninhibiting a device anything might have happened like the disk
  40     in the drive was removed.
  41
  42     EXAMPLE
  43
  44     BUGS
  45
  46     SEE ALSO
  47
  48     INTERNALS
  49
  50 *****************************************************************************/
  51 {
  52     AROS_LIBFUNC_INIT
  53
  54     struct IOFileSys iofs;
  55     struct DevProc *dvp;
  56     LONG err;
  57
  58     InitIOFS(&iofs, FSA_INHIBIT, DOSBase);
  59     iofs.io_Union.io_INHIBIT.io_Inhibit = onoff == DOSTRUE ? TRUE : FALSE;
  60
  61     /* get the device */
  62     if ((dvp = GetDeviceProc(name, NULL)) == NULL)
  63         return DOSFALSE;
  64
  65     /* we're only interested in real devices */
  66     if (dvp->dvp_DevNode->dol_Type != DLT_DEVICE) {
  67         FreeDeviceProc(dvp);
  68         SetIoErr(ERROR_DEVICE_NOT_MOUNTED);
  69         return DOSFALSE;
  70     }
  71
  72     err = DoIOFS(&iofs, dvp, NULL, DOSBase);
  73
  74     FreeDeviceProc(dvp);
  75
  76     return err == 0 ? DOSTRUE : DOSFALSE;
  77
  78     AROS_LIBFUNC_EXIT
  79 } /* Inhibit */