reactos/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: iface.c,v 1.72 2003/10/11 17:51:56 hbirr Exp $
  20  *
  21  * PROJECT:          ReactOS kernel
  22  * FILE:             drivers/fs/vfat/iface.c
  23  * PURPOSE:          VFAT Filesystem
  24  * PROGRAMMER:       Jason Filby (jasonfilby@yahoo.com)
  25  *                   Hartmut Birr
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #include <ddk/ntddk.h>
  31
  32 #define NDEBUG
  33 #include <debug.h>
  34
  35 #include "vfat.h"
  36
  37 /* GLOBALS *****************************************************************/
  38
  39 PVFAT_GLOBAL_DATA VfatGlobalData;
  40
  41 /* FUNCTIONS ****************************************************************/
  42
  43 NTSTATUS STDCALL
  44 DriverEntry(PDRIVER_OBJECT DriverObject,
  45             PUNICODE_STRING RegistryPath)
  46 /*
  47  * FUNCTION: Called by the system to initalize the driver
  48  * ARGUMENTS:
  49  *           DriverObject = object describing this driver
  50  *           RegistryPath = path to our configuration entries
  51  * RETURNS: Success or failure
  52  */
  53 {
  54    PDEVICE_OBJECT DeviceObject;
  55    UNICODE_STRING DeviceName = UNICODE_STRING_INITIALIZER(L"\\Fat");
  56    NTSTATUS Status;
  57
  58    Status = IoCreateDevice(DriverObject,
  59                            sizeof(VFAT_GLOBAL_DATA),
  60                            &DeviceName,
  61                            FILE_DEVICE_DISK_FILE_SYSTEM,
  62                            0,
  63                            FALSE,
  64                            &DeviceObject);
  65    if (!NT_SUCCESS(Status))
  66      {
  67         return (Status);
  68      }
  69    VfatGlobalData = DeviceObject->DeviceExtension;
  70    RtlZeroMemory (VfatGlobalData, sizeof(VFAT_GLOBAL_DATA));
  71    VfatGlobalData->DriverObject = DriverObject;
  72    VfatGlobalData->DeviceObject = DeviceObject;
  73
  74    DeviceObject->Flags = DO_DIRECT_IO;
  75    DriverObject->MajorFunction[IRP_MJ_CLOSE] = (PDRIVER_DISPATCH)VfatBuildRequest;
  76    DriverObject->MajorFunction[IRP_MJ_CREATE] = (PDRIVER_DISPATCH)VfatBuildRequest;
  77    DriverObject->MajorFunction[IRP_MJ_READ] = (PDRIVER_DISPATCH)VfatBuildRequest;
  78    DriverObject->MajorFunction[IRP_MJ_WRITE] = (PDRIVER_DISPATCH)VfatBuildRequest;
  79    DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = (PDRIVER_DISPATCH)VfatBuildRequest;
  80    DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = (PDRIVER_DISPATCH)VfatBuildRequest;
  81    DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = (PDRIVER_DISPATCH)VfatBuildRequest;
  82    DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = (PDRIVER_DISPATCH)VfatBuildRequest;
  83    DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
  84      (PDRIVER_DISPATCH)VfatBuildRequest;
  85    DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] =
  86      (PDRIVER_DISPATCH)VfatBuildRequest;
  87    DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH)VfatShutdown;
  88    DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = (PDRIVER_DISPATCH)VfatBuildRequest;
  89    DriverObject->MajorFunction[IRP_MJ_CLEANUP] = (PDRIVER_DISPATCH)VfatBuildRequest;
  90    DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = (PDRIVER_DISPATCH)VfatBuildRequest;
  91
  92    DriverObject->DriverUnload = NULL;
  93
  94    ExInitializeNPagedLookasideList(&VfatGlobalData->FcbLookasideList,
  95                                    NULL, NULL, 0, sizeof(VFATFCB), TAG_FCB, 0);
  96    ExInitializeNPagedLookasideList(&VfatGlobalData->CcbLookasideList,
  97                                    NULL, NULL, 0, sizeof(VFATCCB), TAG_CCB, 0);
  98    ExInitializeNPagedLookasideList(&VfatGlobalData->IrpContextLookasideList,
  99                                    NULL, NULL, 0, sizeof(VFAT_IRP_CONTEXT), TAG_IRP, 0);
 100
 101    ExInitializeResourceLite(&VfatGlobalData->VolumeListLock);
 102    InitializeListHead(&VfatGlobalData->VolumeListHead);
 103    IoRegisterFileSystem(DeviceObject);
 104    return(STATUS_SUCCESS);
 105 }
 106
 107 /* EOF */
 108