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From: Christoph Hellwig <hch@infradead.org>
To: Lou Langholtz <ldl@aros.net>
Cc: Andrew Morton <akpm@digeo.com>,
	linux-kernel@vger.kernel.org, pavel@ucw.cz
Subject: Re: [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI
Date: Wed, 25 Jun 2003 16:55:13 +0100	[thread overview]
Message-ID: <20030625165513.A20328@infradead.org> (raw)
In-Reply-To: <3EF9C192.7000206@aros.net>; from ldl@aros.net on Wed, Jun 25, 2003 at 09:36:50AM -0600

On Wed, Jun 25, 2003 at 09:36:50AM -0600, Lou Langholtz wrote:
> I have also attached a patch to Pavel's nbd-2.0 release nbd tools that 
> updates the nbd-client to work with linux 2.5 as well as 2.5.74 
> (assuming the aforementioned patch 6.1 made it into 2.5.74). Handling is 
> switched at compile time however and uses <linux/version.h> to do the 
> switching. This will have problems of course if the builder doesn't pay 
> close attention to where there header file are coming from or tries to 
> run the same binary on a different kernel release. Etc.

That's broken.  You must make sure that a binary works with different
kernels or at least make it fail gracefully.  Using <linux/version.h>
from userspace is absolutely not acceptable, just don't use kernel headers
at all but a local copy of <linux/nbd.h>.


  reply	other threads:[~2003-06-25 15:41 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-25  6:51 Lou Langholtz
2003-06-25  7:19 ` Andrew Morton
2003-06-25 14:24   ` Lou Langholtz
2003-06-25 15:36   ` Lou Langholtz
2003-06-25 15:55     ` Christoph Hellwig [this message]
2003-06-25 17:38       ` Lou Langholtz
2003-06-25 17:44         ` Christoph Hellwig
2003-06-25 18:16           ` Lou Langholtz
2003-06-25 18:19             ` Christoph Hellwig
2003-06-25 17:58     ` Anyone for NBD maintainer [was Re: [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI] Pavel Machek
2003-06-25 18:21       ` Lou Langholtz
2003-06-25 18:30         ` Pavel Machek
2003-06-25 21:35           ` Lou Langholtz
     [not found]       ` <Pine.LNX.4.10.10306251645580.11076-100000@clements.sc.steeleye.com>
2003-06-25 21:09         ` NBD maintainer change [was Re: Anyone for NBD maintainer] Pavel Machek
2003-06-25 17:48 ` [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI Paul Clements
2003-06-25 17:56   ` viro
2003-06-25 18:57   ` Lou Langholtz
2003-06-25 19:41     ` Lou Langholtz
2003-06-25 20:00     ` Paul Clements
2003-06-25 22:17       ` Lou Langholtz
2003-06-28 17:13         ` Paul Clements
2003-06-30 16:10           ` Lou Langholtz
2003-06-28 17:20         ` [PATCH] nbd: maintain compatibility with existing nbd tools Paul Clements
2003-06-29 18:42           ` Pavel Machek
2003-06-29 21:04             ` [PATCH 2.5.73] " Paul Clements

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