drivers/fs/vfat/iface.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 1998, 1999, 2000, 2001 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., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * PROJECT:          ReactOS kernel
  22  * FILE:             services/fs/vfat/iface.c
  23  * PURPOSE:          VFAT Filesystem
  24  * PROGRAMMER:       Jason Filby (jasonfilby@yahoo.com)
  25  */
  26
  27 /* INCLUDES *****************************************************************/
  28
  29 #include <ddk/ntddk.h>
  30
  31 #define NDEBUG
  32 #include <debug.h>
  33
  34 #include "vfat.h"
  35
  36 /* GLOBALS *****************************************************************/
  37
  38 PVFAT_GLOBAL_DATA VfatGlobalData;
  39
  40 /* FUNCTIONS ****************************************************************/
  41
  42 NTSTATUS STDCALL
  43 DriverEntry(PDRIVER_OBJECT DriverObject,
  44             PUNICODE_STRING RegistryPath)
  45 /*
  46  * FUNCTION: Called by the system to initalize the driver
  47  * ARGUMENTS:
  48  *           DriverObject = object describing this driver
  49  *           RegistryPath = path to our configuration entries
  50  * RETURNS: Success or failure
  51  */
  52 {
  53    PDEVICE_OBJECT DeviceObject;
  54    UNICODE_STRING DeviceName = UNICODE_STRING_INITIALIZER(L"\\Fat");
  55    NTSTATUS Status;
  56
  57    Status = IoCreateDevice(DriverObject,
  58                            sizeof(VFAT_GLOBAL_DATA),
  59                            &DeviceName,
  60                            FILE_DEVICE_DISK_FILE_SYSTEM,
  61                            0,
  62                            FALSE,
  63                            &DeviceObject);
  64    if (!NT_SUCCESS(Status))
  65      {
  66         return (Status);
  67      }
  68    VfatGlobalData = DeviceObject->DeviceExtension;
  69    RtlZeroMemory (VfatGlobalData, sizeof(VFAT_GLOBAL_DATA));
  70    VfatGlobalData->DriverObject = DriverObject;
  71    VfatGlobalData->DeviceObject = DeviceObject;
  72
  73    DeviceObject->Flags = DO_DIRECT_IO;
  74    DriverObject->MajorFunction[IRP_MJ_CLOSE] = VfatBuildRequest;
  75    DriverObject->MajorFunction[IRP_MJ_CREATE] = VfatBuildRequest;
  76    DriverObject->MajorFunction[IRP_MJ_READ] = VfatBuildRequest;
  77    DriverObject->MajorFunction[IRP_MJ_WRITE] = VfatBuildRequest;
  78    DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = VfatBuildRequest;
  79    DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = VfatBuildRequest;
  80    DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = VfatBuildRequest;
  81    DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = VfatBuildRequest;
  82    DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
  83      VfatBuildRequest;
  84    DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] =
  85      VfatBuildRequest;
  86    DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = VfatShutdown;
  87    DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = VfatBuildRequest;
  88    DriverObject->MajorFunction[IRP_MJ_CLEANUP] = VfatBuildRequest;
  89    DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = VfatBuildRequest;
  90
  91    DriverObject->DriverUnload = NULL;
  92
  93    ExInitializeNPagedLookasideList(&VfatGlobalData->FcbLookasideList,
  94                                    NULL, NULL, 0, sizeof(VFATFCB), TAG_FCB, 0);
  95    ExInitializeNPagedLookasideList(&VfatGlobalData->CcbLookasideList,
  96                                    NULL, NULL, 0, sizeof(VFATCCB), TAG_CCB, 0);
  97    ExInitializeNPagedLookasideList(&VfatGlobalData->IrpContextLookasideList,
  98                                    NULL, NULL, 0, sizeof(VFAT_IRP_CONTEXT), TAG_IRP, 0);
  99
 100    ExInitializeResourceLite(&VfatGlobalData->VolumeListLock);
 101    InitializeListHead(&VfatGlobalData->VolumeListHead);
 102    IoRegisterFileSystem(DeviceObject);
 103    return(STATUS_SUCCESS);
 104 }
 105
 106 /* EOF */
 107