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- Added more checks when mounting a volume (based on: http://technet2.microsoft.com/windowsserver/en/library/8cc5891d-bf8e-4164-862d-dac5418c59481033.mspx)

Browse source 
- Removed some useless debug
Thanks to Hervé

svn path=/trunk/; revision=32462
This commit is contained in:
Pierre Schweitzer 2008-02-24 10:06:37 +00:00
parent 2b17735b1a
commit a68d895e4d
2 changed files with 45 additions and 29 deletions
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72
reactos/drivers/filesystems/ntfs/fsctl.c
View file

@ -21,7 +21,8 @@
* FILE: drivers/filesystems/ntfs/fsctl.c
* PURPOSE: NTFS filesystem driver
* PROGRAMMER: Eric Kohl
* Updated by Valentin Verkhovsky 2003/09/12
* Valentin Verkhovsky
* Pierre Schweitzer
*/
/* INCLUDES *****************************************************************/
@ -44,9 +45,9 @@ NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
{
PARTITION_INFORMATION PartitionInfo;
DISK_GEOMETRY DiskGeometry;
ULONG Size;
PBOOT_SECTOR BootSector;
NTSTATUS Status;
ULONG Size, k;
DPRINT1("NtfsHasFileSystem() called\n");
@ -102,18 +103,45 @@ NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
DiskGeometry.BytesPerSector,
(PVOID)BootSector,
TRUE);
if (NT_SUCCESS(Status))
if (!NT_SUCCESS(Status))
{
DPRINT1("NTFS-identifier: [%.8s]\n", BootSector->OEMID);
if (RtlCompareMemory(BootSector->OEMID, "NTFS ", 8) != 8)
goto ByeBye;
}
/* Check values of different fields. If those fields have not expected
* values, we fail, to avoid mounting partitions that Windows won't mount.
*/
/* OEMID: this field must be NTFS */
if (RtlCompareMemory(BootSector->OEMID, "NTFS ", 8) != 8)
{
DPRINT1("Failed with NTFS-identifier: [%.8s]\n", BootSector->OEMID);
Status = STATUS_UNRECOGNIZED_VOLUME;
goto ByeBye;
}
/* Unused0: this field must be COMPLETELY null */
for (k=0; k<7; k++)
{
if (BootSector->BPB.Unused0[k] != 0)
{
DPRINT1("Failed in field Unused0: [%.7s]\n", BootSector->BPB.Unused0);
Status = STATUS_UNRECOGNIZED_VOLUME;
goto ByeBye;
}
}
/* Unused3: this field must be COMPLETELY null */
for (k=0; k<4; k++)
{
if (BootSector->BPB.Unused3[k] != 0)
{
DPRINT1("Failed in field Unused3: [%.4s]\n", BootSector->BPB.Unused3);
Status = STATUS_UNRECOGNIZED_VOLUME;
goto ByeBye;
}
}
ByeBye:
ExFreePool(BootSector);
return(Status);
return Status;
}
@ -181,21 +209,15 @@ NtfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
else
NtfsInfo->BytesPerFileRecord = 1 << (-BootSector->EBPB.ClustersPerMftRecord);
//#ifndef NDEBUG
DbgPrint("Boot sector information:\n");
DbgPrint(" BytesPerSector: %hu\n", BootSector->BPB.BytesPerSector);
DbgPrint(" SectorsPerCluster: %hu\n", BootSector->BPB.SectorsPerCluster);
DbgPrint(" SectorCount: %I64u\n", BootSector->EBPB.SectorCount);
DbgPrint(" MftStart: %I64u\n", BootSector->EBPB.MftLocation);
DbgPrint(" MftMirrStart: %I64u\n", BootSector->EBPB.MftMirrLocation);
DbgPrint(" ClustersPerMftRecord: %lx\n", BootSector->EBPB.ClustersPerMftRecord);
DbgPrint(" ClustersPerIndexRecord: %lx\n", BootSector->EBPB.ClustersPerIndexRecord);
DbgPrint(" SerialNumber: %I64x\n", BootSector->EBPB.SerialNumber);
//#endif
DPRINT("Boot sector information:\n");
DPRINT(" BytesPerSector: %hu\n", BootSector->BPB.BytesPerSector);
DPRINT(" SectorsPerCluster: %hu\n", BootSector->BPB.SectorsPerCluster);
DPRINT(" SectorCount: %I64u\n", BootSector->EBPB.SectorCount);
DPRINT(" MftStart: %I64u\n", BootSector->EBPB.MftLocation);
DPRINT(" MftMirrStart: %I64u\n", BootSector->EBPB.MftMirrLocation);
DPRINT(" ClustersPerMftRecord: %lx\n", BootSector->EBPB.ClustersPerMftRecord);
DPRINT(" ClustersPerIndexRecord: %lx\n", BootSector->EBPB.ClustersPerIndexRecord);
DPRINT(" SerialNumber: %I64x\n", BootSector->EBPB.SerialNumber);
ExFreePool(BootSector);
@ -234,17 +256,11 @@ NtfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
return Status;
}
#ifndef NDEBUG
DbgPrint("\n\n");
/* Enumerate attributes */
NtfsDumpFileAttributes (MftRecord);
DbgPrint("\n\n");
DbgPrint("\n\n");
/* Enumerate attributes */
NtfsDumpFileAttributes (VolumeRecord);
DbgPrint("\n\n");
#endif
/* Get volume name */
Attribute = FindAttribute (VolumeRecord, AttributeVolumeName, NULL);

2
reactos/drivers/filesystems/ntfs/ntfs.h
View file

@ -38,7 +38,7 @@ typedef struct _BIOS_PARAMETERS_BLOCK
typedef struct _EXTENDED_BIOS_PARAMETERS_BLOCK
{
UCHAR Unknown[4]; // 0x24, always 80 00 80 00
USHORT Unknown[2]; // 0x24, always 80 00 80 00
ULONGLONG SectorCount; // 0x28
ULONGLONG MftLocation; // 0x30
ULONGLONG MftMirrLocation; // 0x38