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Date: Wed, 19 May 2010 08:13:37 -0700
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From: ron minnich <rminnich@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] system call trace version of 9vx available.
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On Tue, May 18, 2010 at 10:45 PM, erik quanstrom <quanstro@quanstro.net> wr=
ote:

> ron, please enlighten the ignorant. =A0could you constrast this with
> truss? =A0or maybe there's a man page?

I need to write one.

The biggest diff from truss is that the program itself is dead simple,
since most of the work is done by the kernel and the data relayed to
the program as text. The program is really a fancier, fork-following
version of this script:
while (echo startsyscall > /proc/$1/ctl) cat /proc/$1/syscalltrace

All the formatting etc. is in the kernel.

ron