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Date: Mon, 7 Feb 2005 04:58:23 +0000
From: Joseph Koshy <joseph.koshy@gmail.com>
To: Ashwin Chandra <ashcs@ucla.edu>
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References: <001301c50c3e$1a8003b0$58e243a4@ash>
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cc: freebsd-hackers@freebsd.org
Subject: Re: Opening and wriiting to file in Kern
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> If you mist do this, the general set of steps are:
> 
> 1. use namei() to convert a pathname to a vnode
> 2. Use vn_open(), vn_rdwr(), and vn_close() to operate on the vnode.
> 3. Observe proper vnode locking and reference counting with vref(),
> vn_lock(), and vput()

Take a look at "sys/kern/kern_ktrace.c" or "sys/kern/kern_alq.c" for a template.

-- 
FreeBSD Volunteer, http://people.freebsd.org/~jkoshy