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Added forgotten ext2.c

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svn path=/branches/ext2/; revision=13013
This commit is contained in:
Art Yerkes 2005-01-13 02:39:38 +00:00
parent bebd1855ee
commit 19a3f56aa7
1 changed files with 136 additions and 0 deletions
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136
reactos/drivers/fs/fs_rec/ext2.c Normal file
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/*
* ReactOS kernel
* Copyright (C) 2002,2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: fat.c 9284 2004-05-02 20:12:38Z hbirr $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: drivers/fs/fs_rec/ext2.c (based on vfat.c)
* PURPOSE: Filesystem recognizer driver
* PROGRAMMER: Eric Kohl
*/
/* INCLUDES *****************************************************************/
#include <ddk/ntddk.h>
#include <rosrtl/string.h>
#define NDEBUG
#include <debug.h>
#include "fs_rec.h"
/* FUNCTIONS ****************************************************************/
static NTSTATUS
FsRecIsExt2Volume(IN PDEVICE_OBJECT DeviceObject)
{
NTSTATUS Status;
PARTITION_INFORMATION PartitionInfo;
DISK_GEOMETRY DiskGeometry;
ULONG Size;
BOOL RecognizedFS = FALSE;
Size = sizeof(DISK_GEOMETRY);
Status = FsRecDeviceIoControl(DeviceObject,
IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL,
0,
&DiskGeometry,
&Size);
if (!NT_SUCCESS(Status))
{
DPRINT("FsRecDeviceIoControl faild (%x)\n", Status);
return Status;
}
if (DiskGeometry.MediaType == FixedMedia || DiskGeometry.MediaType == RemovableMedia)
{
// We have found a hard disk
Size = sizeof(PARTITION_INFORMATION);
Status = FsRecDeviceIoControl(DeviceObject,
IOCTL_DISK_GET_PARTITION_INFO,
NULL,
0,
&PartitionInfo,
&Size);
if (!NT_SUCCESS(Status))
{
DPRINT("FsRecDeviceIoControl faild (%x)\n", Status);
return Status;
}
if (PartitionInfo.PartitionType)
{
if (PartitionInfo.PartitionType == PARTITION_EXT2)
{
RecognizedFS = TRUE;
}
}
}
return RecognizedFS ? STATUS_SUCCESS : STATUS_UNRECOGNIZED_VOLUME;
}
NTSTATUS
FsRecExt2FsControl(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION Stack;
UNICODE_STRING RegistryPath;
NTSTATUS Status;
Stack = IoGetCurrentIrpStackLocation(Irp);
switch (Stack->MinorFunction)
{
case IRP_MN_MOUNT_VOLUME:
DPRINT("FAT: IRP_MN_MOUNT_VOLUME\n");
Status = FsRecIsExt2Volume(Stack->Parameters.MountVolume.DeviceObject);
if (NT_SUCCESS(Status))
{
DPRINT("Identified FAT volume\n");
Status = STATUS_FS_DRIVER_REQUIRED;
}
break;
case IRP_MN_LOAD_FILE_SYSTEM:
DPRINT("FAT: IRP_MN_LOAD_FILE_SYSTEM\n");
RtlRosInitUnicodeStringFromLiteral(&RegistryPath,
L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Ext2");
Status = ZwLoadDriver(&RegistryPath);
if (!NT_SUCCESS(Status))
{
DPRINT("ZwLoadDriver failed (Status %x)\n", Status);
}
else
{
IoUnregisterFileSystem(DeviceObject);
}
break;
default:
DPRINT("FAT: Unknown minor function %lx\n", Stack->MinorFunction);
Status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
return(Status);
}
/* EOF */