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https://github.com/reactos/reactos.git
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156 lines
4 KiB
C
156 lines
4 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS File System Recognizer
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* FILE: drivers/filesystems/fs_rec/udfs.c
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* PURPOSE: USFS Recognizer
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* PROGRAMMER: Alex Ionescu (alex.ionescu@reactos.org)
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* Eric Kohl
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*/
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/* INCLUDES *****************************************************************/
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#include "fs_rec.h"
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#define NDEBUG
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#include <debug.h>
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#include "udfs.h"
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/* FUNCTIONS ****************************************************************/
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BOOLEAN
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NTAPI
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FsRecIsUdfsVolume(IN PDEVICE_OBJECT DeviceObject,
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IN ULONG SectorSize)
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{
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PVOLSTRUCTDESC VolumeStructDesc = NULL;
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LARGE_INTEGER Offset;
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BOOLEAN ret = FALSE;
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int i;
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PAGED_CODE();
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Offset.QuadPart = 16 * SectorSize;
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for (i = 0; i < 16; i++)
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{
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if (!FsRecReadBlock(DeviceObject,
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&Offset,
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SectorSize,
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SectorSize,
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(PVOID *)&VolumeStructDesc,
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NULL))
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{
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break;
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_BEA01,
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VSD_STD_ID_LEN))
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{
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DPRINT("BEA01 found\n");
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_NSR03,
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VSD_STD_ID_LEN))
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{
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DPRINT("NSR03 found\n");
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ret = TRUE;
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_NSR02,
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VSD_STD_ID_LEN))
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{
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DPRINT("NSR02 found\n");
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ret = TRUE;
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_TEA01,
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VSD_STD_ID_LEN))
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{
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DPRINT("TEA01 found\n");
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_CD001,
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VSD_STD_ID_LEN))
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{
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DPRINT("CD001 found\n");
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_CDW02,
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VSD_STD_ID_LEN))
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{
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DPRINT("CDW02 found\n");
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}
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if (!strncmp((const char*)VolumeStructDesc->Ident,
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VSD_STD_ID_BOOT2,
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VSD_STD_ID_LEN))
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{
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DPRINT("BOOT2 found\n");
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}
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Offset.QuadPart += SectorSize;
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}
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if (VolumeStructDesc)
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ExFreePool(VolumeStructDesc);
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return ret;
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}
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NTSTATUS
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NTAPI
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FsRecUdfsFsControl(IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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PIO_STACK_LOCATION Stack;
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NTSTATUS Status;
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PDEVICE_OBJECT MountDevice;
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ULONG SectorSize;
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PAGED_CODE();
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/* Get the I/O Stack and check the function type */
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Stack = IoGetCurrentIrpStackLocation(Irp);
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switch (Stack->MinorFunction)
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{
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case IRP_MN_MOUNT_VOLUME:
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/* Assume failure */
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Status = STATUS_UNRECOGNIZED_VOLUME;
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/* Get the device object and request the sector size */
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MountDevice = Stack->Parameters.MountVolume.DeviceObject;
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if (FsRecGetDeviceSectorSize(MountDevice, &SectorSize))
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{
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/* Check if it's an actual UDF volume */
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if (FsRecIsUdfsVolume(MountDevice, SectorSize))
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{
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/* It is! */
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Status = STATUS_FS_DRIVER_REQUIRED;
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}
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}
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break;
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case IRP_MN_LOAD_FILE_SYSTEM:
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/* Load the file system */
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Status = FsRecLoadFileSystem(DeviceObject,
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L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Udfs");
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break;
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default:
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/* Invalid request */
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Status = STATUS_INVALID_DEVICE_REQUEST;
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}
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/* Return Status */
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return Status;
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}
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/* EOF */
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