Date: Mon, 31 Dec 2001 15:27:10 -0800 From: Mike Smith <msmith@freebsd.org> To: Mike Barcroft <mike@freebsd.org> Cc: Mike Smith <msmith@freebsd.org>, hackers@freebsd.org, msmith@mass.dis.org Subject: Re: loadable aio Message-ID: <200112312327.fBVNRAj02362@mass.dis.org> In-Reply-To: Message from Mike Barcroft <mike@freebsd.org> of "Mon, 31 Dec 2001 03:48:07 EST." <20011231034807.D45114@espresso.q9media.com>
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> > What part of searching a path for a matching file is "black magic"?
> >
> > Shells have been doing this for decades...
>
> %%%
> /*
> * Load /boot/kernel/procfs.ko
> * XXX: why does this work?
> */
> chdir("/");
> kldload("procfs");
You should only need the last kldload call. Any other magic is probably
left over from times when kldload didn't work properly.
> If that's not black magic, I'd like to know what is. I'd like to
> refer you to the kldload(2) manual, but unfortunately it doesn't
> document how kldload(2) works. :(
The synopsis for kldload(2) should be "find and load the named kernel
module".
In essence, it takes either a module name and searches the "right"
places for it, or it takes a fully-qualified pathname and loads
exactly that module. That's all; anything else is a bug in the
implementation and should be fixed.
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