From: <jhf@rivenstone.net>
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Cc: Erik Andersen <andersen@codepoet.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fix 2.4.x incorrect argv[0] for init
Date: Wed, 1 Oct 2003 15:34:25 -0400 [thread overview]
Message-ID: <20031001193425.GA19793@rivenstone.net> (raw)
In-Reply-To: <20031001185613.GA13945@codepoet.org>
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On Wed, Oct 01, 2003 at 12:56:13PM -0600, Erik Andersen wrote:
> In 2.4.x when someone specifies "init=/bin/foo" to select an
> alternative binary to run instead of /sbin/init, argv[0] is not
> to the correct value. This is a problem for programs such as
> busybox that multiplex applications based on the value of
> argv[0]. For example, even if you specify init=/bin/sh" on the
> kernel command line, busybox will still receive "/sbin/init" as
> argv[0], and will therefore run init rather than /bin/sh...
>
> This problem was recently fixed in 2.6.x. This patch applies
> the same fix to 2.4.x.
I didn't know that got merged. Great!
Debian users running 2.6: go install busybox-static, then make a
link from /sbin/sh to /bin/busybox. If something bad happens to your
file system or libc or something like that, you can still boot with
init=/sbin/sh and get a shell prompt and all the important utilities
as long as /bin/busybox is okay. It's a nice failsafe, especially
when testing kernels or running an unstable distribution.
If this patch gets merged in 2.4, 2.4 users will be able to do this
too.
--
Joseph Fannin
jhf@rivenstone.net
"That's all I have to say about that." -- Forrest Gump.
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next prev parent reply other threads:[~2003-10-01 19:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-01 17:44 Linux 2.4.23-pre6 Marcelo Tosatti
2003-10-01 18:56 ` [PATCH] fix 2.4.x incorrect argv[0] for init Erik Andersen
2003-10-01 19:34 ` jhf [this message]
2003-10-01 21:21 ` Linux 2.4.23-pre6 David van Hoose
2003-10-02 7:08 ` Marcelo Tosatti
2003-10-02 11:09 ` David van Hoose
2003-10-02 22:13 ` J.A. Magallon
2003-10-05 21:42 ` Marcelo Tosatti
2003-10-09 22:21 ` 2.4.23-pre6 aic79xx compile failure amd64 Samuel Flory
-- strict thread matches above, loose matches on Subject: below --
2003-09-09 22:32 [PATCH] fix 2.4.x incorrect argv[0] for init Erik Andersen
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