linux-kernel - Re: [PATCH] Extend core dump note section to contain file names of mapped files

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Message-ID: <20120401165339.GR17822@one.firstfloor.org>
Date:	Sun, 1 Apr 2012 18:53:39 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	Andi Kleen <andi@...stfloor.org>, "H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Jan Kratochvil <jan.kratochvil@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Extend core dump note section to contain file names of mapped files

> It uses seq_printf(). It will need refactoring if we would
> want to use it for purposes other than /proc pseudo-file
> generation.

seq_file just writes to a buffer. I'm sure there's a way to get at that
buffer. In theory you could also just copy using read/write and a small temp
buffer. The only problem would be to stop it taking the vm sem.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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