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![Timo Kreuzer](/assets/img/avatar_default.png)
* Add an NDK header to define INIT_FUNCTION/INIT_SECTION globally * Use _declspec(allocate(x)) and _declspec(code_seg(x)) on MSVC versions that support it * Use INIT_FUNCTION on functions only and INIT_SECTION on data only (required by MSVC) * Place INIT_FUNCTION before the return type (required by MSVC) * Make sure declarations and implementations share the same modifiers (required by MSVC) * Add a global linker option to suppress warnings about defined but unused INIT section * Merge INIT section into .text in freeldr
194 lines
7.3 KiB
C
194 lines
7.3 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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#if defined(ALLOC_PRAGMA)
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#pragma alloc_text(INIT, DriverEntry)
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#pragma alloc_text(INIT, NtfsInitializeFunctionPointers)
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#endif
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/* GLOBALS *****************************************************************/
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PNTFS_GLOBAL_DATA NtfsGlobalData = NULL;
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/* FUNCTIONS ****************************************************************/
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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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INIT_FUNCTION
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NTSTATUS
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NTAPI
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DriverEntry(PDRIVER_OBJECT DriverObject,
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PUNICODE_STRING RegistryPath)
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{
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UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(DEVICE_NAME);
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NTSTATUS Status;
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PDEVICE_OBJECT DeviceObject;
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OBJECT_ATTRIBUTES Attributes;
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HANDLE DriverKey = NULL;
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TRACE_(NTFS, "DriverEntry(%p, '%wZ')\n", DriverObject, RegistryPath);
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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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&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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return Status;
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}
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/* Initialize global data */
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NtfsGlobalData = DeviceObject->DeviceExtension;
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RtlZeroMemory(NtfsGlobalData, sizeof(NTFS_GLOBAL_DATA));
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NtfsGlobalData->DeviceObject = DeviceObject;
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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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NtfsGlobalData->EnableWriteSupport = FALSE;
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// Read registry to determine if write support should be enabled
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InitializeObjectAttributes(&Attributes,
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RegistryPath,
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OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
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NULL,
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NULL);
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Status = ZwOpenKey(&DriverKey, KEY_READ, &Attributes);
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if (NT_SUCCESS(Status))
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{
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UNICODE_STRING ValueName;
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UCHAR Buffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(ULONG)];
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PKEY_VALUE_PARTIAL_INFORMATION Value = (PKEY_VALUE_PARTIAL_INFORMATION)Buffer;
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ULONG ValueLength = sizeof(Buffer);
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ULONG ResultLength;
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RtlInitUnicodeString(&ValueName, L"MyDataDoesNotMatterSoEnableExperimentalWriteSupportForEveryNTFSVolume");
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Status = ZwQueryValueKey(DriverKey,
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&ValueName,
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KeyValuePartialInformation,
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Value,
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ValueLength,
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&ResultLength);
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if (NT_SUCCESS(Status) && Value->Data[0] == TRUE)
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{
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DPRINT1("\tEnabling write support on ALL NTFS volumes!\n");
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NtfsGlobalData->EnableWriteSupport = TRUE;
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}
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ZwClose(DriverKey);
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}
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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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NtfsGlobalData->FastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
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NtfsGlobalData->FastIoDispatch.FastIoCheckIfPossible = NtfsFastIoCheckIfPossible;
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NtfsGlobalData->FastIoDispatch.FastIoRead = NtfsFastIoRead;
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NtfsGlobalData->FastIoDispatch.FastIoWrite = NtfsFastIoWrite;
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DriverObject->FastIoDispatch = &NtfsGlobalData->FastIoDispatch;
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/* Initialize lookaside list for IRP contexts */
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ExInitializeNPagedLookasideList(&NtfsGlobalData->IrpContextLookasideList,
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NULL, NULL, 0, sizeof(NTFS_IRP_CONTEXT), TAG_IRP_CTXT, 0);
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/* Initialize lookaside list for FCBs */
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ExInitializeNPagedLookasideList(&NtfsGlobalData->FcbLookasideList,
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NULL, NULL, 0, sizeof(NTFS_FCB), TAG_FCB, 0);
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/* Initialize lookaside list for attributes contexts */
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ExInitializeNPagedLookasideList(&NtfsGlobalData->AttrCtxtLookasideList,
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NULL, NULL, 0, sizeof(NTFS_ATTR_CONTEXT), TAG_ATT_CTXT, 0);
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/* Driver can't be unloaded */
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DriverObject->DriverUnload = NULL;
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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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return STATUS_SUCCESS;
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}
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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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INIT_FUNCTION
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VOID
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NTAPI
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NtfsInitializeFunctionPointers(PDRIVER_OBJECT DriverObject)
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{
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DriverObject->MajorFunction[IRP_MJ_CREATE] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_CLEANUP] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_READ] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = NtfsFsdDispatch;
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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] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = NtfsFsdDispatch;
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = NtfsFsdDispatch;
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return;
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}
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/* EOF */
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