mirror of
https://github.com/reactos/reactos.git
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132 lines
5 KiB
C
132 lines
5 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 1998, 1999, 2000, 2001 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* PROJECT: ReactOS kernel
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* FILE: drivers/fs/vfat/iface.c
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* PURPOSE: VFAT Filesystem
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* PROGRAMMER: Jason Filby (jasonfilby@yahoo.com)
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*/
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/* INCLUDES *****************************************************************/
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#define NDEBUG
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#include "vfat.h"
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/* GLOBALS *****************************************************************/
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PVFAT_GLOBAL_DATA VfatGlobalData;
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/* FUNCTIONS ****************************************************************/
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NTSTATUS NTAPI
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DriverEntry(PDRIVER_OBJECT DriverObject,
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PUNICODE_STRING RegistryPath)
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/*
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* FUNCTION: Called by the system to initialize the driver
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* ARGUMENTS:
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* DriverObject = object describing this driver
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* RegistryPath = path to our configuration entries
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* RETURNS: Success or failure
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*/
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{
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PDEVICE_OBJECT DeviceObject;
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UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Fat");
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NTSTATUS Status;
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Status = IoCreateDevice(DriverObject,
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sizeof(VFAT_GLOBAL_DATA),
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&DeviceName,
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FILE_DEVICE_DISK_FILE_SYSTEM,
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0,
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FALSE,
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&DeviceObject);
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if (Status == STATUS_OBJECT_NAME_EXISTS ||
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Status == STATUS_OBJECT_NAME_COLLISION)
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{
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/* Try an other name, if 'Fat' is already in use. 'Fat' is also used by fastfat.sys on W2K */
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RtlInitUnicodeString(&DeviceName, L"\\RosFat");
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Status = IoCreateDevice(DriverObject,
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sizeof(VFAT_GLOBAL_DATA),
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&DeviceName,
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FILE_DEVICE_DISK_FILE_SYSTEM,
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0,
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FALSE,
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&DeviceObject);
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}
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if (!NT_SUCCESS(Status))
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{
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return (Status);
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}
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VfatGlobalData = DeviceObject->DeviceExtension;
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RtlZeroMemory (VfatGlobalData, sizeof(VFAT_GLOBAL_DATA));
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VfatGlobalData->DriverObject = DriverObject;
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VfatGlobalData->DeviceObject = DeviceObject;
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DeviceObject->Flags |= DO_DIRECT_IO;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_CREATE] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_READ] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
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VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] =
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VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = VfatShutdown;
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DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_CLEANUP] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_PNP] = VfatBuildRequest;
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DriverObject->DriverUnload = NULL;
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/* Cache manager */
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VfatGlobalData->CacheMgrCallbacks.AcquireForLazyWrite = VfatAcquireForLazyWrite;
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VfatGlobalData->CacheMgrCallbacks.ReleaseFromLazyWrite = VfatReleaseFromLazyWrite;
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VfatGlobalData->CacheMgrCallbacks.AcquireForReadAhead = VfatAcquireForReadAhead;
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VfatGlobalData->CacheMgrCallbacks.ReleaseFromReadAhead = VfatReleaseFromReadAhead;
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/* Fast I/O */
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VfatInitFastIoRoutines(&VfatGlobalData->FastIoDispatch);
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DriverObject->FastIoDispatch = &VfatGlobalData->FastIoDispatch;
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/* Private lists */
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ExInitializeNPagedLookasideList(&VfatGlobalData->FcbLookasideList,
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NULL, NULL, 0, sizeof(VFATFCB), TAG_FCB, 0);
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ExInitializeNPagedLookasideList(&VfatGlobalData->CcbLookasideList,
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NULL, NULL, 0, sizeof(VFATCCB), TAG_CCB, 0);
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ExInitializeNPagedLookasideList(&VfatGlobalData->IrpContextLookasideList,
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NULL, NULL, 0, sizeof(VFAT_IRP_CONTEXT), TAG_IRP, 0);
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ExInitializeResourceLite(&VfatGlobalData->VolumeListLock);
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InitializeListHead(&VfatGlobalData->VolumeListHead);
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IoRegisterFileSystem(DeviceObject);
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return(STATUS_SUCCESS);
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}
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/* EOF */
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