Help on FilterGetMessage

NTFSD
1

Hi,
i am trying to use FltSendMessage and FilterGetMessage calls to communicate between user mod and kernel mode.
i have written a sample application, and i am receiving the message in the user mode using FilterGetMessage, but it is failing with the return code 0x8007007a.
and the client port is getting closed, as the application is exiting.

i am not using overlapped parameter, and i am passing NULL to it.

still it is not waiting for the message from kernel.

could anyone help me.

thanx in advance.

2

Have you considered looking up the error message?

// MessageId: ERROR_INSUFFICIENT_BUFFER
//
// MessageText:
//
// The data area passed to a system call is too small.

  • Dan.

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Sent: Thursday, August 03, 2006 7:28 AM
To: Windows File Systems Devs Interest List
Subject: [ntfsd] Help on FilterGetMessage

Hi,
i am trying to use FltSendMessage and FilterGetMessage calls to communicate
between user mod and kernel mode. i have written a sample application, and i
am receiving the message in the user mode using FilterGetMessage, but it is
failing with the return code 0x8007007a. and the client port is getting
closed, as the application is exiting.

i am not using overlapped parameter, and i am passing NULL to it.

still it is not waiting for the message from kernel.

could anyone help me.

thanx in advance.

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

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3

Hi Da,
Thanx for the information.
i was supplying not enough buffer.