syscall stealing

[François Visconte]

Hello ,
I'm new into kernel module programming and to improve my
knowledges i would like to create a simple kernel module.
My module should create a proc entry and increment a number
everytime a key is pressed.
To do that i have to "hijack" the "getkeycode" function but
i don't now how to do that with 2.6 kernel series.
Is anyone can help me telling me where to find documentation or
an existing module witch use such a technique

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