Removable storage device

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Vinay - 25 Mar 2004 08:30 GMT

Hi,
Does any Read/Write operations in Removable storage device pass through File
system driver?Can i control Reading/Writing to a storage device from my file
filter driver?

plz reply.

regds
vinay

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Jeff Richards - 25 Mar 2004 23:13 GMT

Yes and Yes.

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Jeff Richards
MS MVP W95/W98

> Hi,
> Does any Read/Write operations in Removable storage device pass through File
[quoted text clipped - 5 lines]
> regds
> vinay

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Vinay - 26 Mar 2004 05:22 GMT

Dear Sir,
Thank you very much.
Actually I am writing a file filter driver and this filter driver is suppose
to prevent copy of any file from hard disk to Removable storage device like
USB Port drive,CD,Floopy and so on.
So far i have assumed that any Removable storage device will form a
drive(like c drive or D drive...) on the system and for Filter driver
reading/writing of a removable storage device is just like reading from
another system drive.Plz tell me whether my assumption is correct or not.

regds
vinay

> Yes and Yes.
> --
[quoted text clipped - 11 lines]
> > regds
> > vinay

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Jeff Richards - 27 Mar 2004 12:29 GMT

You cannot assume that any removable storage will be accessed through a
drive letter - a tape backup unit is an example of removable storage that is
not accessed through a drive letter. Some cameras that connect through the
serial port do not use a drive letter.

If you are hooking file system devices then you can catch any access to a
device that uses those services (removable or not), but you will not get
devices that use alternative access methods.

Signature

Jeff Richards
MS MVP W95/W98

> Dear Sir,
> Thank you very much.
[quoted text clipped - 23 lines]
> > > regds
> > > vinay

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