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Check cluster size when mounting a volume

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svn path=/trunk/; revision=33779
This commit is contained in:
Pierre Schweitzer 2008-05-30 18:55:05 +00:00
parent 18eca01b10
commit 4db827d152
1 changed files with 13 additions and 2 deletions
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15
reactos/drivers/filesystems/ntfs/fsctl.c
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@ -45,9 +45,9 @@ NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
{ {
PARTITION_INFORMATION PartitionInfo; PARTITION_INFORMATION PartitionInfo;
DISK_GEOMETRY DiskGeometry; DISK_GEOMETRY DiskGeometry;
ULONG ClusterSize, Size, k;
PBOOT_SECTOR BootSector; PBOOT_SECTOR BootSector;
NTSTATUS Status; NTSTATUS Status;
ULONG Size, k;
DPRINT1("NtfsHasFileSystem() called\n"); DPRINT1("NtfsHasFileSystem() called\n");
@ -91,7 +91,7 @@ NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
DPRINT1("BytesPerSector: %lu\n", DiskGeometry.BytesPerSector); DPRINT1("BytesPerSector: %lu\n", DiskGeometry.BytesPerSector);
BootSector = ExAllocatePoolWithTag(NonPagedPool, BootSector = ExAllocatePoolWithTag(NonPagedPool,
DiskGeometry.BytesPerSector, TAG_NTFS); DiskGeometry.BytesPerSector, TAG_NTFS);
if (BootSector == NULL) if (BootSector == NULL)
{ {
return(STATUS_INSUFFICIENT_RESOURCES); return(STATUS_INSUFFICIENT_RESOURCES);
@ -138,6 +138,17 @@ NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
goto ByeBye; goto ByeBye;
} }
} }
/* Check cluster size */
ClusterSize = BootSector->BPB.BytesPerSector * BootSector->BPB.SectorsPerCluster;
if (ClusterSize != 512 && ClusterSize != 1024 &&
ClusterSize != 2048 && ClusterSize != 4096)
{
DPRINT1("Cluster size failed: %hu, %hu, %hu\n", BootSector->BPB.BytesPerSector,
BootSector->BPB.SectorsPerCluster,
ClusterSize);
Status = STATUS_UNRECOGNIZED_VOLUME;
goto ByeBye;
}
ByeBye: ByeBye:
ExFreePool(BootSector); ExFreePool(BootSector);