drivers/filesystems/ntfs/dispatch.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2008 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
  18  *
  19  * COPYRIGHT:        See COPYING in the top level directory
  20  * PROJECT:          ReactOS kernel
  21  * FILE:             drivers/filesystem/ntfs/dispatch.c
  22  * PURPOSE:          NTFS filesystem driver
  23  * PROGRAMMER:       Pierre Schweitzer
  24  * UPDATE HISTORY:
  25  */
  26
  27 /* INCLUDES *****************************************************************/
  28
  29 #include "ntfs.h"
  30
  31 #define NDEBUG
  32 #include <debug.h>
  33
  34 /* GLOBALS *****************************************************************/
  35
  36
  37 /* FUNCTIONS ****************************************************************/
  38
  39 /*
  40  * FUNCTION: This function manages IRP for various major functions
  41  * ARGUMENTS:
  42  *           DriverObject = object describing this driver
  43  *           Irp = IRP to be passed to internal functions
  44  * RETURNS: Status of I/O Request
  45  */
  46 NTSTATUS NTAPI
  47 NtfsFsdDispatch(PDEVICE_OBJECT DeviceObject,
  48                 PIRP Irp)
  49 {
  50   PNTFS_IRP_CONTEXT IrpContext = NULL;
  51   NTSTATUS Status = STATUS_UNSUCCESSFUL;
  52
  53   TRACE_(NTFS, "NtfsFsdDispatch()\n");
  54
  55   FsRtlEnterFileSystem();
  56   ASSERT(DeviceObject);
  57   ASSERT(Irp);
  58
  59   NtfsIsIrpTopLevel(Irp);
  60
  61   IrpContext = NtfsAllocateIrpContext(DeviceObject, Irp);
  62   if (IrpContext)
  63   {
  64     switch (IrpContext->MajorFunction)
  65     {
  66       case IRP_MJ_QUERY_VOLUME_INFORMATION:
  67       {
  68         Status = NtfsQueryVolumeInformation(IrpContext);
  69         break;
  70       }
  71       case IRP_MJ_SET_VOLUME_INFORMATION:
  72       {
  73         Status = NtfsSetVolumeInformation(IrpContext);
  74         break;
  75       }
  76     }
  77   }
  78   else
  79     Status = STATUS_INSUFFICIENT_RESOURCES;
  80
  81   Irp->IoStatus.Status = Status;
  82   IoCompleteRequest(Irp, IO_NO_INCREMENT);
  83
  84         if (IrpContext)
  85     ExFreePoolWithTag(IrpContext, 'PRIN');
  86
  87   IoSetTopLevelIrp(NULL);
  88   FsRtlExitFileSystem();
  89   return Status;
  90 }