mirror of
https://github.com/reactos/reactos.git
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138 lines
4.7 KiB
C
138 lines
4.7 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 2002 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/filesystem/ntfs/ntfs.c
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* PURPOSE: NTFS filesystem driver
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* PROGRAMMER: Eric Kohl
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* Pierre Schweitzer
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*/
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/* INCLUDES *****************************************************************/
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#include "ntfs.h"
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS *****************************************************************/
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PNTFS_GLOBAL_DATA NtfsGlobalData = NULL;
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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 initalize 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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NTSTATUS Status;
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UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(DEVICE_NAME);
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TRACE_(NTFS, "DriverEntry(%p, '%wZ')\n", DriverObject, RegistryPath);
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/* Initialize global data */
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NtfsGlobalData = ExAllocatePoolWithTag(NonPagedPool, sizeof(NTFS_GLOBAL_DATA), 'GRDN');
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if (!NtfsGlobalData)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto ErrorEnd;
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}
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RtlZeroMemory(NtfsGlobalData, sizeof(NTFS_GLOBAL_DATA));
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NtfsGlobalData->Identifier.Type = NTFS_TYPE_GLOBAL_DATA;
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NtfsGlobalData->Identifier.Size = sizeof(NTFS_GLOBAL_DATA);
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ExInitializeResourceLite(&NtfsGlobalData->Resource);
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/* Keep trace of Driver Object */
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NtfsGlobalData->DriverObject = DriverObject;
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/* Initialize IRP functions array */
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NtfsInitializeFunctionPointers(DriverObject);
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/* Initialize CC functions array */
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NtfsGlobalData->CacheMgrCallbacks.AcquireForLazyWrite = NtfsAcqLazyWrite;
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NtfsGlobalData->CacheMgrCallbacks.ReleaseFromLazyWrite = NtfsRelLazyWrite;
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NtfsGlobalData->CacheMgrCallbacks.AcquireForReadAhead = NtfsAcqReadAhead;
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NtfsGlobalData->CacheMgrCallbacks.ReleaseFromReadAhead = NtfsRelReadAhead;
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/* Driver can't be unloaded */
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DriverObject->DriverUnload = NULL;
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Status = IoCreateDevice(DriverObject,
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sizeof(NTFS_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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&NtfsGlobalData->DeviceObject);
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if (!NT_SUCCESS(Status))
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{
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WARN_(NTFS, "IoCreateDevice failed with status: %lx\n", Status);
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goto ErrorEnd;
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}
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NtfsGlobalData->DeviceObject->Flags |= DO_DIRECT_IO;
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/* Register file system */
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IoRegisterFileSystem(NtfsGlobalData->DeviceObject);
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ObReferenceObject(NtfsGlobalData->DeviceObject);
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ErrorEnd:
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if (!NT_SUCCESS(Status))
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{
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if (NtfsGlobalData)
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{
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ExDeleteResourceLite(&NtfsGlobalData->Resource);
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ExFreePoolWithTag(NtfsGlobalData, 'GRDN');
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}
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}
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return Status;
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}
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VOID NTAPI
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NtfsInitializeFunctionPointers(PDRIVER_OBJECT DriverObject)
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/*
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* FUNCTION: Called within the driver entry to initialize the IRP functions array
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* ARGUMENTS:
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* DriverObject = object describing this driver
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* RETURNS: Nothing
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*/
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{
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DriverObject->MajorFunction[IRP_MJ_CREATE] = NtfsFsdCreate;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = NtfsFsdClose;
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DriverObject->MajorFunction[IRP_MJ_READ] = NtfsFsdRead;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = NtfsFsdWrite;
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DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = NtfsFsdQueryInformation;
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DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = NtfsFsdDirectoryControl;
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = NtfsFsdFileSystemControl;
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return;
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}
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