k8 s wrote:
But i am sharing something in file->private_data which is a private
variable to the process(that is passed to the device driver
functions). Isn't it?
How do you make sure that there is only one process accessing the file?
If you open a file and then fork another process, both have access to
the file using the same file descriptor.
You might want to do precisely this for a number of reasons, like having
one process that send commands to a device while the other receives
status information...
--
Paulo Marques - www.grupopie.com
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke (1729 - 1797)
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