reactos/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 /* FUNCTIONS ****************************************************************/
  35
  36 /*
  37  * FUNCTION: This function manages IRP for various major functions
  38  * ARGUMENTS:
  39  *           DriverObject = object describing this driver
  40  *           Irp = IRP to be passed to internal functions
  41  * RETURNS: Status of I/O Request
  42  */
  43 NTSTATUS
  44 NTAPI
  45 NtfsFsdDispatch(PDEVICE_OBJECT DeviceObject,
  46                 PIRP Irp)
  47 {
  48     PNTFS_IRP_CONTEXT IrpContext = NULL;
  49     NTSTATUS Status = STATUS_UNSUCCESSFUL;
  50
  51     TRACE_(NTFS, "NtfsFsdDispatch()\n");
  52
  53     FsRtlEnterFileSystem();
  54     ASSERT(DeviceObject);
  55     ASSERT(Irp);
  56
  57     NtfsIsIrpTopLevel(Irp);
  58
  59     IrpContext = NtfsAllocateIrpContext(DeviceObject, Irp);
  60     if (IrpContext)
  61     {
  62         switch (IrpContext->MajorFunction)
  63         {
  64             case IRP_MJ_QUERY_VOLUME_INFORMATION:
  65                 Status = NtfsQueryVolumeInformation(IrpContext);
  66                 break;
  67
  68             case IRP_MJ_SET_VOLUME_INFORMATION:
  69                 Status = NtfsSetVolumeInformation(IrpContext);
  70                 break;
  71
  72             case IRP_MJ_QUERY_INFORMATION:
  73                 Status = NtfsQueryInformation(IrpContext);
  74                 break;
  75
  76             case IRP_MJ_DIRECTORY_CONTROL:
  77                 Status = NtfsDirectoryControl(IrpContext);
  78                 break;
  79
  80             case IRP_MJ_READ:
  81                 Status = NtfsRead(IrpContext);
  82                 break;
  83         }
  84     }
  85     else
  86         Status = STATUS_INSUFFICIENT_RESOURCES;
  87
  88     Irp->IoStatus.Status = Status;
  89     IoCompleteRequest(Irp, IrpContext->PriorityBoost);
  90
  91     if (IrpContext)
  92         ExFreePoolWithTag(IrpContext, 'PRIN');
  93
  94     IoSetTopLevelIrp(NULL);
  95     FsRtlExitFileSystem();
  96
  97     return Status;
  98 }