Hello Ken,
ah, I see. thanks for the examples… I will use FilterGetDosName
for my minifilter and experiment with the mount manager with
dynamic disks :).
Thanks again.
–
Best regards,
Alex mailto:xxxxx@bitdefender.com
Wednesday, September 14, 2005, 2:56:25 PM, you wrote:
I don’t have a solution for you, but I can assure you it’s tough. A volume
could technically be mapped to more than one drive letter, but it’s not
common practice. Multiple mount points and/or a drive letter and a mount
point are common practices, though.
Also, dynamic disks are a real pain. In the driver, they’re attached as
something like:
\Device\HarddiskDmVolumes\PhysicalDmVolumes\BlockVolume1
However, user-mode applications see a symbolic link to that device, which is
something like:
\Device\HarddiskDmVolumes\ComputernameDg0\Volume1
I started down the path you’re taking and gave up, finding a different
solution. So, maybe it depends on why you need it…
Ken
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Alex Carp
Sent: Wednesday, September 14, 2005 7:47 AM
To: Windows File Systems Devs Interest List
Subject: Re[2]: [ntfsd] IOCTL_MOUNTMGR_QUERY_POINTS questions
Hello Ken,
thanks for the reply. yes, i am doing a minifilter and I know
about FilterGetDosName, but I need to get the dos name in kernel
mode , and I also plan to use the routine for other projects as
well.
so, to reiterate:
can there be more drive letters to just one device ? I what case
?
–
Best regards,
Alex mailto:xxxxx@bitdefender.com
Wednesday, September 14, 2005, 2:36:59 PM, you wrote:
> Alex:
> As I recall, you’re doing a mini-filter, so check out FilterGetDosName():
> “FilterGetDosName returns the volume’s drive letter if it has one. If no
> drive letter is assigned to the volume, FilterGetDosName returns a path to
a
> volume mount point (also called a mount point name). If no drive letters
or
> mount points are defined for the volume, FilterGetDosName returns S_OK,
and
> lpVolumeName receives NULL.”
> HTH,
> Ken
> -----Original Message-----
> From: xxxxx@lists.osr.com
> [mailto:xxxxx@lists.osr.com] On Behalf Of Alex Carp
> Sent: Wednesday, September 14, 2005 4:54 AM
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] IOCTL_MOUNTMGR_QUERY_POINTS questions
> Hello,
> I have two small questions about
> IOCTL_MOUNTMGR_QUERY_POINTS. I use
> it to convert a device name into a mount point (
> \Device\HarddiskVolume1 -> C: ). However, as the documentation
> states, i get a MOUNTMGR_MOUNT_POINTS structure containing TWO
> MOUNTMGR_MOUNT_POINT structures. The first structure contains a
> GUID path “??\Volume{…}” as the SymbolicLinkName, while the
> second structure contains the expected “\DosDevices\C:”.
> The documentation states that if I call the IOCTL with only the
> device name , i get “all associated mount points (symbolic links),
> including the volume GUID pathname and the drive letters”.
> The question is , can there be more drive letters to just one
> device ( \Device\HarddiskVolume1 ) ? Also, in the common case of
> one letter per device, can I rely on the SymbolicLinkName of the
> second structure to be the one with the mount point ?
> Is this the right way to create a device to mount point mapping ?
> –
> Best regards,
> Alex mailto:xxxxx@bitdefender.com
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