File system size

NTFSD
1

Hi,

I have a file system driver. The explorer displays the
size of the file system.

Which call is responsible for updating this size
information in the explorer? I want to modify this
size information.
Where exactly should I look into?
Should I look in the kernel layer or in the user
layer?

For eg If I copy some files to the explorer the
available size will get reduced. Where is the code in
which the available size in the explorer gets updated.

Should I look into calls like QueryVolumeInformation?

Regards,
Priya

Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com

2

I suppose IRP_MJ_VOLUME_INFORMATION with request type FileFsSizeInformation
is used.

“priya priya” wrote in message news:xxxxx@ntfsd…
> Hi,
>
> I have a file system driver. The explorer displays the
> size of the file system.
>
> Which call is responsible for updating this size
> information in the explorer? I want to modify this
> size information.
> Where exactly should I look into?
> Should I look in the kernel layer or in the user
> layer?
>
> For eg If I copy some files to the explorer the
> available size will get reduced. Where is the code in
> which the available size in the explorer gets updated.
>
> Should I look into calls like QueryVolumeInformation?
>
> Regards,
> Priya
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
>

3

> Should I look into calls like QueryVolumeInformation?

Correct.

Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
xxxxx@storagecraft.com
http://www.storagecraft.com

4

The QueryVolumeInformation will return the volume
space details.
But if I make any changes to the volume space it will
not get reflected in the explorer(or the actual
value).

I’m looking out for the place or structure in which it
exactly gets stored and the call which updates the
explorer.

Regards,
Priya

— “Maxim S. Shatskih”
wrote:

> > Should I look into calls like
> QueryVolumeInformation?
>
> Correct.
>
> Maxim Shatskih, Windows DDK MVP
> StorageCraft Corporation
> xxxxx@storagecraft.com
> http://www.storagecraft.com
>
>
>
> —
> Questions? First check the IFS FAQ at
> https://www.osronline.com/article.cfm?id=17
>
> You are currently subscribed to ntfsd as:
> xxxxx@yahoo.com
> To unsubscribe send a blank email to
> xxxxx@lists.osr.com
>

__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com