linux-kernel - Re: [PATCH 1/4] coredump: add an interface to control the core dump routine

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Message-ID: <3014.1175346205@redhat.com>
Date:	Sat, 31 Mar 2007 14:03:25 +0100
From:	David Howells <dhowells@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Kawai, Hidehiro" <hidehiro.kawai.ez@...achi.com>,
	Pavel Machek <pavel@....cz>,
	kernel list <linux-kernel@...r.kernel.org>,
	Robin Holt <holt@....com>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	sugita <yumiko.sugita.yf@...achi.com>,
	Satoshi OSHIMA <soshima@...hat.com>,
	Hideo AOKI <haoki@...hat.com>
Subject: Re: [PATCH 1/4] coredump: add an interface to control the core dump routine 

Andrew Morton <akpm@...ux-foundation.org> wrote:

> Yes, I agree - I don't think we presently have a way of avoiding having
> to send all of that uninteresting data down the pipe.

Have the kernel fork and exec a debug program "just in time" with the dying
process ptrace-attached in advance.  That program could then use ptrace() or
whatever to do the coredump.  I think Windows does something like that.

David
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