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From: Jan Harkes <jaharkes@cs.cmu.edu>
To: Yann Droneaud <ydroneaud@opteya.com>
Cc: David Howells <dhowells@redhat.com>,
	linux-api@vger.kernel.org, linux-kbuild@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 05/11] UAPI: coda: Don't use internal kernel structs in UAPI
Date: Wed, 5 Sep 2018 13:28:58 -0400	[thread overview]
Message-ID: <20180905172858.pv2vafetjzzk5jxs@cs.cmu.edu> (raw)
In-Reply-To: <1c57005277ac723ebb670a1dc847a205f0529d53.camel@opteya.com>

On Wed, Sep 05, 2018 at 07:12:37PM +0200, Yann Droneaud wrote:
> Le mercredi 05 septembre 2018 � 16:55 +0100, David Howells a �crit :
> > The size and layout of internal kernel structures may not be relied
> > upon outside of the kernel and may even change in a containerised
> > environment if a container image is frozen and shifted to another
> > machine.
> > 
> > Excise these from Coda's upc_req struct.
...
> 
> This structure should not have been exposed to userspace in the first
> place: it's unusable by userspace as it is. It was incorrect to have it
> outside of #ifdef __KERNEL__ before commit 607ca46e97a1b ... 
...
> So the structure can be moved back to <linux/coda_psdev.h>.

I found a year old patch that clearly fell through the cracks that
fixes this exact thing.

    https://lkml.org/lkml/2017/8/6/186

Jan

  reply	other threads:[~2018-09-05 22:00 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-05 15:54 [RFC] UAPI: Check headers by compiling all together as C++ David Howells
2018-09-05 15:55 ` [PATCH 05/11] UAPI: coda: Don't use internal kernel structs in UAPI David Howells
2018-09-05 16:54   ` Jan Harkes
2018-09-05 17:12   ` Yann Droneaud
2018-09-05 17:28     ` Jan Harkes [this message]
2018-09-05 17:24   ` David Howells
2018-09-06  7:13   ` David Howells
2018-09-06 11:52     ` Yann Droneaud
2018-09-06 12:16       ` Jan Harkes
2018-09-06 14:53     ` David Howells
2018-09-05 15:55 ` [PATCH 07/11] UAPI: nilfs2: Fix use of undefined byteswapping functions David Howells
2018-09-05 22:20   ` Al Viro
2018-09-05 16:55 ` [RFC] UAPI: Check headers by compiling all together as C++ Greg KH
2018-09-05 17:33   ` Yann Droneaud
2018-09-05 17:42     ` Michael S. Tsirkin
2018-09-06  7:12     ` Yann Droneaud
2018-09-05 19:22   ` Jan Engelhardt
2018-09-05 17:50 ` David Howells

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