linux-kernel - Re: Does init start with any open files?

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Message-ID: <20121225115844.GG7692@liondog.tnic>
Date:	Tue, 25 Dec 2012 12:58:44 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	bbi5291 <bbi5291@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Does init start with any open files?

First of all,

please do not top-post. You can search the net for why top-posting is
discouraged.

On Tue, Dec 25, 2012 at 06:25:11AM -0500, bbi5291 wrote:
> Well, that can't be right---I grepped the kernel source for "initctl"
> and got no results.

That's because it is a named pipe.

> Besides, if you're running a shell, then init has already had time
> to open and close whatever file descriptors it wants to. What I want
> to know is whether init has any open file descriptors, at, say, the
> moment its main() starts executing.

You probably want to stare at init/main.c:kernel_init() and what it
calls, and then download the sources of the init executable which is run
on your distro, whip up a text editor and start staring at them.

HTH.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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