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https://github.com/reactos/reactos.git
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132 lines
5.1 KiB
C
132 lines
5.1 KiB
C
/*
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* PROJECT: VFAT Filesystem
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: Driver entry interface
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* COPYRIGHT: Copyright 1998 Jason Filby <jasonfilby@yahoo.com>
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* Copyright 2010-2018 Pierre Schweitzer <pierre@reactos.org>
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*/
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/* INCLUDES *****************************************************************/
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#include "vfat.h"
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS *****************************************************************/
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PVFAT_GLOBAL_DATA VfatGlobalData;
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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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CODE_SEG("INIT")
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NTSTATUS
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NTAPI
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DriverEntry(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPath)
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{
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PDEVICE_OBJECT DeviceObject;
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UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\FatX");
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NTSTATUS Status;
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UNREFERENCED_PARAMETER(RegistryPath);
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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 (!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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VfatGlobalData->NumberProcessors = KeNumberProcessors;
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/* Enable this to enter the debugger when file system corruption
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* has been detected:
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VfatGlobalData->Flags = VFAT_BREAK_ON_CORRUPTION; */
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/* Delayed close support */
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ExInitializeFastMutex(&VfatGlobalData->CloseMutex);
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InitializeListHead(&VfatGlobalData->CloseListHead);
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VfatGlobalData->CloseCount = 0;
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VfatGlobalData->CloseWorkerRunning = FALSE;
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VfatGlobalData->ShutdownStarted = FALSE;
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VfatGlobalData->CloseWorkItem = IoAllocateWorkItem(DeviceObject);
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if (VfatGlobalData->CloseWorkItem == NULL)
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{
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IoDeleteDevice(DeviceObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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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] = VfatBuildRequest;
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DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = 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_DEVICE_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 = VfatAcquireForLazyWrite;
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VfatGlobalData->CacheMgrCallbacks.ReleaseFromReadAhead = VfatReleaseFromLazyWrite;
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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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ExInitializePagedLookasideList(&VfatGlobalData->CloseContextLookasideList,
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NULL, NULL, 0, sizeof(VFAT_CLOSE_CONTEXT), TAG_CLOSE, 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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#ifdef KDBG
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{
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BOOLEAN Registered;
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Registered = KdRosRegisterCliCallback(vfatKdbgHandler);
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DPRINT1("VFATFS KDBG extension registered: %s\n", (Registered ? "yes" : "no"));
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}
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#endif
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return STATUS_SUCCESS;
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}
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/* EOF */
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