Hi All,
I'm about to start work on a new kernel module to suit some hardware I
have here, but I had a few questions which need answering first.
The object of the module is simply to update a register in the hardware
at regular intervals. I intend to rip off the sample at
http://www.tldp.org/LDP/lkmpg/2.6/html/x1211.html , and place my own
functions in the interrupt handler to do the job. The hardware
manufacturer has supplied a library of pre-compiled functions to talk to
the hardware for me. However, the functions in the library all print
information to STDOUT when they are called, and there's not much I can
do to stop it. Is this a bad thing? What happens when a kernel module
attempts to write to STDOUT (or STDERR, for that matter, I'm not really
sure yet which one it uses)?
On another note, I will need to communicate with my module, to tell it
what values to write. The guide I pointed out has procedures for writing
to a procfs file from whithin a module, but I can't see anything on how
to get information from userspace into the module, ie how can I pick up
if somebody writes to my /proc file? I also saw somewhere on
kernelnewbies.org that procfs is deprecated and I should use devfs
instead. Can anyone point me to a howto on using devfs?
Regards,
Leigh
Leigh Sharpe
Network Systems Engineer
Pacific Wireless
Ph +61 3 9584 8966
Mob 0408 009 502
Helpdesk 1300 300 616
email [EMAIL PROTECTED]
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web www.pacificwireless.com.au
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