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Date:      Wed, 5 Nov 1997 09:29:45 +0100
From:      j@uriah.heep.sax.de (J Wunsch)
To:        hackers@hub.freebsd.org
Subject:   Re: gettimeofday() overhead
Message-ID:  <19971105092945.DF19829@uriah.heep.sax.de>
In-Reply-To: <Pine.BSF.3.96.971104233602.942A-100000@darkstar.home>; from Charles Mott on Nov 4, 1997 23:42:43 -0700
References:  <Pine.BSF.3.96.971104174022.3158D-100000@zippy.dyn.ml.org> <Pine.BSF.3.96.971104233602.942A-100000@darkstar.home>

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As Charles Mott wrote:

> At this point, accessing the kernel time variable from user space is
> mainly a point of interest (this is the hackers group, right?).  I can
> read up on how to access /dev/kmem, but how is the kernel symbol table
> accessed?

With nlist(3).  You should be able to find a number of sample
utilities doing it, just watch out for all the setgid kmem things in
/usr/*bin.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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