mirror of
https://github.com/reactos/reactos.git
synced 2024-12-28 10:04:49 +00:00
492 lines
15 KiB
C
492 lines
15 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS File System Recognizer
|
|
* FILE: drivers/filesystems/fs_rec/fs_rec.c
|
|
* PURPOSE: Main Driver Entrypoint and FS Registration
|
|
* PROGRAMMER: Alex Ionescu (alex.ionescu@reactos.org)
|
|
* Eric Kohl
|
|
*/
|
|
|
|
/* INCLUDES *****************************************************************/
|
|
|
|
#include "fs_rec.h"
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
PKEVENT FsRecLoadSync;
|
|
|
|
/* FUNCTIONS ****************************************************************/
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
FsRecLoadFileSystem(IN PDEVICE_OBJECT DeviceObject,
|
|
IN PWCHAR DriverServiceName)
|
|
{
|
|
NTSTATUS Status = STATUS_IMAGE_ALREADY_LOADED;
|
|
PDEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
|
|
UNICODE_STRING DriverName;
|
|
|
|
PAGED_CODE();
|
|
|
|
/* Make sure we haven't already been called */
|
|
if (DeviceExtension->State != Loaded)
|
|
{
|
|
/* Acquire the load lock */
|
|
KeEnterCriticalRegion();
|
|
KeWaitForSingleObject(FsRecLoadSync,
|
|
Executive,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL);
|
|
|
|
/* Make sure we're active */
|
|
if (DeviceExtension->State == Pending)
|
|
{
|
|
/* Load the FS driver */
|
|
RtlInitUnicodeString(&DriverName, DriverServiceName);
|
|
Status = ZwLoadDriver(&DriverName);
|
|
|
|
/* Loop all the linked recognizer objects */
|
|
while (DeviceExtension->State != Unloading)
|
|
{
|
|
/* Set them to the unload state */
|
|
DeviceExtension->State = Unloading;
|
|
|
|
/* Go to the next one */
|
|
DeviceObject = DeviceExtension->Alternate;
|
|
DeviceExtension = DeviceObject->DeviceExtension;
|
|
}
|
|
}
|
|
|
|
/* Make sure that we haven't already loaded the FS */
|
|
if (DeviceExtension->State != Loaded)
|
|
{
|
|
/* Unregister us, and set us as loaded */
|
|
IoUnregisterFileSystem(DeviceObject);
|
|
DeviceExtension->State = Loaded;
|
|
}
|
|
|
|
/* Release the lock */
|
|
KeSetEvent(FsRecLoadSync, IO_NO_INCREMENT, FALSE);
|
|
KeLeaveCriticalRegion();
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
DRIVER_DISPATCH FsRecCreate;
|
|
NTSTATUS
|
|
NTAPI
|
|
FsRecCreate(IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
NTSTATUS Status;
|
|
PAGED_CODE();
|
|
|
|
UNREFERENCED_PARAMETER(DeviceObject);
|
|
|
|
/* Make sure we have a file name */
|
|
if (IoStack->FileObject->FileName.Length)
|
|
{
|
|
/* Fail the request */
|
|
Status = STATUS_OBJECT_PATH_NOT_FOUND;
|
|
}
|
|
else
|
|
{
|
|
/* Let it through */
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Complete the IRP */
|
|
Irp->IoStatus.Status = Status;
|
|
Irp->IoStatus.Information = FILE_OPENED;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return Status;
|
|
}
|
|
|
|
DRIVER_DISPATCH FsRecClose;
|
|
NTSTATUS
|
|
NTAPI
|
|
FsRecClose(IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PAGED_CODE();
|
|
|
|
UNREFERENCED_PARAMETER(DeviceObject);
|
|
|
|
/* Just complete the IRP and return success */
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
DRIVER_DISPATCH FsRecFsControl;
|
|
NTSTATUS
|
|
NTAPI
|
|
FsRecFsControl(IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PDEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
|
|
NTSTATUS Status;
|
|
PAGED_CODE();
|
|
|
|
/* Check the file system type */
|
|
switch (DeviceExtension->FsType)
|
|
{
|
|
case FS_TYPE_VFAT:
|
|
|
|
/* Send FAT command */
|
|
Status = FsRecVfatFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_NTFS:
|
|
|
|
/* Send NTFS command */
|
|
Status = FsRecNtfsFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_CDFS:
|
|
|
|
/* Send CDFS command */
|
|
Status = FsRecCdfsFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_UDFS:
|
|
|
|
/* Send UDFS command */
|
|
Status = FsRecUdfsFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_EXT2:
|
|
|
|
/* Send EXT2 command */
|
|
Status = FsRecExt2FsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_BTRFS:
|
|
|
|
/* Send BTRFS command */
|
|
Status = FsRecBtrfsFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_REISERFS:
|
|
|
|
/* Send REISERFS command */
|
|
Status = FsRecReiserfsFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_FFS:
|
|
|
|
/* Send FFS command */
|
|
Status = FsRecFfsFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
case FS_TYPE_FATX:
|
|
|
|
/* Send FATX command */
|
|
Status = FsRecFatxFsControl(DeviceObject, Irp);
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Unrecognized FS */
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
}
|
|
|
|
/* Complete the IRP */
|
|
Irp->IoStatus.Status = Status;
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return Status;
|
|
}
|
|
|
|
DRIVER_UNLOAD FsRecUnload;
|
|
VOID
|
|
NTAPI
|
|
FsRecUnload(IN PDRIVER_OBJECT DriverObject)
|
|
{
|
|
PAGED_CODE();
|
|
|
|
/* Loop all driver device objects */
|
|
while (DriverObject->DeviceObject)
|
|
{
|
|
/* Delete this device */
|
|
IoDeleteDevice(DriverObject->DeviceObject);
|
|
}
|
|
|
|
/* Free the lock */
|
|
ExFreePool(FsRecLoadSync);
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
FsRecRegisterFs(IN PDRIVER_OBJECT DriverObject,
|
|
IN PDEVICE_OBJECT ParentObject OPTIONAL,
|
|
OUT PDEVICE_OBJECT *NewDeviceObject OPTIONAL,
|
|
IN PCWSTR FsName,
|
|
IN PCWSTR RecognizerName,
|
|
IN ULONG FsType,
|
|
IN DEVICE_TYPE DeviceType,
|
|
IN ULONG AdditionalFlags)
|
|
{
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
PDEVICE_EXTENSION DeviceExtension;
|
|
UNICODE_STRING DeviceName;
|
|
PDEVICE_OBJECT DeviceObject;
|
|
HANDLE FileHandle;
|
|
NTSTATUS Status;
|
|
|
|
/* Assume failure */
|
|
if (NewDeviceObject) *NewDeviceObject = NULL;
|
|
|
|
/* Setup the attributes */
|
|
RtlInitUnicodeString(&DeviceName, FsName);
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&DeviceName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
0,
|
|
NULL);
|
|
|
|
/* Open the device */
|
|
Status = ZwCreateFile(&FileHandle,
|
|
SYNCHRONIZE,
|
|
&ObjectAttributes,
|
|
&IoStatus,
|
|
NULL,
|
|
0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_OPEN,
|
|
0,
|
|
NULL,
|
|
0);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* We succeeded, close the handle */
|
|
ZwClose(FileHandle);
|
|
}
|
|
else if (Status != STATUS_OBJECT_NAME_NOT_FOUND)
|
|
{
|
|
/* We failed with anything else then what we want to fail with */
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
|
|
/* If we succeeded, there's no point in trying this again */
|
|
if (NT_SUCCESS(Status)) return STATUS_IMAGE_ALREADY_LOADED;
|
|
|
|
/* Create recognizer device object */
|
|
RtlInitUnicodeString(&DeviceName, RecognizerName);
|
|
Status = IoCreateDevice(DriverObject,
|
|
sizeof(DEVICE_EXTENSION),
|
|
&DeviceName,
|
|
DeviceType,
|
|
0,
|
|
FALSE,
|
|
&DeviceObject);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Set additional flags in the device object */
|
|
DeviceObject->Flags |= AdditionalFlags;
|
|
|
|
/* Get the device extension and set it up */
|
|
DeviceExtension = DeviceObject->DeviceExtension;
|
|
DeviceExtension->FsType = FsType;
|
|
DeviceExtension->State = Pending;
|
|
|
|
/* Do we have a parent? */
|
|
if (ParentObject)
|
|
{
|
|
/* Link it in */
|
|
DeviceExtension->Alternate =
|
|
((PDEVICE_EXTENSION)ParentObject->DeviceExtension)->Alternate;
|
|
((PDEVICE_EXTENSION)ParentObject->DeviceExtension)->Alternate =
|
|
DeviceObject;
|
|
}
|
|
else
|
|
{
|
|
/* Otherwise, we're the only one */
|
|
DeviceExtension->Alternate = DeviceObject;
|
|
}
|
|
|
|
/* Return the DO if needed */
|
|
if (NewDeviceObject) *NewDeviceObject = DeviceObject;
|
|
|
|
/* Register the file system */
|
|
IoRegisterFileSystem(DeviceObject);
|
|
}
|
|
|
|
/* Return Status */
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
DriverEntry(IN PDRIVER_OBJECT DriverObject,
|
|
IN PUNICODE_STRING RegistryPath)
|
|
{
|
|
NTSTATUS Status;
|
|
ULONG DeviceCount = 0;
|
|
PDEVICE_OBJECT CdfsObject;
|
|
PDEVICE_OBJECT UdfsObject;
|
|
PDEVICE_OBJECT FatObject;
|
|
|
|
PAGED_CODE();
|
|
|
|
UNREFERENCED_PARAMETER(RegistryPath);
|
|
|
|
/* Page the entire driver */
|
|
MmPageEntireDriver(DriverEntry);
|
|
|
|
/* Allocate the lock */
|
|
FsRecLoadSync = ExAllocatePoolWithTag(NonPagedPool,
|
|
sizeof(KEVENT),
|
|
FSREC_TAG);
|
|
if (!FsRecLoadSync) return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
/* Initialize it */
|
|
KeInitializeEvent(FsRecLoadSync, SynchronizationEvent, TRUE);
|
|
|
|
/* Setup the major functions */
|
|
DriverObject->MajorFunction[IRP_MJ_CREATE] = FsRecCreate;
|
|
DriverObject->MajorFunction[IRP_MJ_CLOSE] = FsRecClose;
|
|
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = FsRecClose;
|
|
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = FsRecFsControl;
|
|
DriverObject->DriverUnload = FsRecUnload;
|
|
|
|
/* Register CDFS for CDs */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
&CdfsObject,
|
|
L"\\Cdfs",
|
|
L"\\FileSystem\\CdfsRecognizer",
|
|
FS_TYPE_CDFS,
|
|
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
|
|
DO_LOW_PRIORITY_FILESYSTEM);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register CDFS for HDDs */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
CdfsObject,
|
|
NULL,
|
|
L"\\CdfsHdd",
|
|
L"\\FileSystem\\CdfsHddRecognizer",
|
|
FS_TYPE_CDFS,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
DO_LOW_PRIORITY_FILESYSTEM);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register UDFS for CDs */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
&UdfsObject,
|
|
L"\\UdfsCdRom",
|
|
L"\\FileSystem\\UdfsCdRomRecognizer",
|
|
FS_TYPE_UDFS,
|
|
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register UDFS for HDDs */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
UdfsObject,
|
|
NULL,
|
|
L"\\UdfsDisk",
|
|
L"\\FileSystem\\UdfsDiskRecognizer",
|
|
FS_TYPE_UDFS,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register FAT */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
&FatObject,
|
|
L"\\Fat",
|
|
L"\\FileSystem\\FatRecognizer",
|
|
FS_TYPE_VFAT,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register FAT for CDs */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
FatObject,
|
|
NULL,
|
|
L"\\FatCdrom",
|
|
L"\\FileSystem\\FatCdRomRecognizer",
|
|
FS_TYPE_VFAT,
|
|
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register NTFS */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
NULL,
|
|
L"\\Ntfs",
|
|
L"\\FileSystem\\NtfsRecognizer",
|
|
FS_TYPE_NTFS,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register EXT2 */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
NULL,
|
|
L"\\Ext2fs",
|
|
L"\\FileSystem\\Ext2Recognizer",
|
|
FS_TYPE_EXT2,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register BTRFS */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
NULL,
|
|
L"\\Btrfs",
|
|
L"\\FileSystem\\BtrfsRecognizer",
|
|
FS_TYPE_BTRFS,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register REISERFS */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
NULL,
|
|
L"\\Reiserfs",
|
|
L"\\FileSystem\\ReiserfsRecognizer",
|
|
FS_TYPE_REISERFS,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register FFS */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
NULL,
|
|
L"\\ffs",
|
|
L"\\FileSystem\\FfsRecognizer",
|
|
FS_TYPE_FFS,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Register FATX */
|
|
Status = FsRecRegisterFs(DriverObject,
|
|
NULL,
|
|
NULL,
|
|
L"\\FatX",
|
|
L"\\FileSystem\\FatXRecognizer",
|
|
FS_TYPE_FATX,
|
|
FILE_DEVICE_DISK_FILE_SYSTEM,
|
|
0);
|
|
if (NT_SUCCESS(Status)) DeviceCount++;
|
|
|
|
/* Return appropriate Status */
|
|
return (DeviceCount > 0) ? STATUS_SUCCESS : STATUS_IMAGE_ALREADY_LOADED;
|
|
}
|
|
|
|
/* EOF */
|