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From: Rumen Bogdanovski on 28 May 2010 08:10
Hi all,
I have a simple question:
I need to make a kernel module for a specific character device.
But I need to know which uid is reading and writing because the
data written and data read should be user specific. So will
sys_geteuid() do the job for me. Or simply how can I a
module know who is calling its read or write?

Thank you in advance.

Rumen
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From: Andreas Schwab on 28 May 2010 08:50
Rumen Bogdanovski <rbogdanovski(a)gmail.com> writes:

> Or simply how can I a module know who is calling its read or write?

The current task is always (except in interrupt context) available in
current, and its euid is returned by current_euid().

Andreas.

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