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Merge branch 'pvt-vpb2' into pvt-sxs-vpb

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This commit is contained in:
Bill Zissimopoulos 2022-10-03 15:10:06 +01:00
commit d1fc5e5d0f
1 changed files with 51 additions and 0 deletions
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51
src/sys/volume.c
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@ -113,6 +113,57 @@ NTSTATUS FspVolumeCreate(
FspSiloDereferenceGlobals(Globals);
if (NT_SUCCESS(Result))
{
/*
* If we have an fsvrt device, mount it NOW via opening the volume. This ensures
* that the fsvrt is mounted by the correct fsvol device early on and remedies
* a rare case where NTFS crashes the system when it attempts to mount our fsvrt.
*
* We use IoCreateFileEx with FILE_READ_DATA to ensure that the I/O Manager will
* mount the fsvrt device.
*
* We ignore the IoCreateFileEx return code as it is only used for its side effect
* of mounting the fsvrt. In the unlikely event that IoCreateFileEx fails, the
* system will retry the mount when a file is accessed, etc.
*/
PDEVICE_OBJECT FsvolDeviceObject = IrpSp->FileObject->FsContext2;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
PDEVICE_OBJECT FsvrtDeviceObject = FsvolDeviceExtension->FsvrtDeviceObject;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatus;
HANDLE Handle;
if (0 != FsvrtDeviceObject)
{
InitializeObjectAttributes(
&ObjectAttributes,
&FsvolDeviceExtension->VolumeName,
OBJ_KERNEL_HANDLE,
0/*RootDirectory*/,
0/*SecurityDescriptor*/);
IoStatus.Status = IoCreateFileEx(
&Handle,
FILE_READ_DATA,
&ObjectAttributes,
&IoStatus,
0/*AllocationSize*/,
0/*FileAttributes*/,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
FILE_OPEN,
0/*CreateOptions*/,
0/*EaBuffer*/,
0/*EaLength*/,
CreateFileTypeNone,
0/*InternalParameters*/,
0/*Options*/,
0/*DriverContext*/);
if (NT_SUCCESS(IoStatus.Status))
ObCloseHandle(Handle, KernelMode);
}
}
return Result;
}