[support] Drupal 7 Control file download

[Austin Einter]

Hi All
This is a simple problem, please let me know how to go about it.

In a custom module, depending on search keywords, I show number of
documents in a table to users. When users click on document link, the
document gets downloaded.

For me, I have set  a download limit for each user as 10. So one user can
download maximum of 10 documents per day.

When user clicks on document link, file is getting downloaded. But during
that time none of my custom module's function is getting executed so I am
not able to keep track of which user has downloaded how many documents, so
I am not able to limit the downloads.

Can somebody help me , when the user clicks on a document link, how can I
force at least one function in my custom module should be invoked.

Or if there is some other alternative to keep track of documents downloaded
per user, please let me know.

Thanks
Austin
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