linux-kernel - Re: Current git tree broke busybox start-stop-daemon

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Message-ID: <20080416190057.GA4666@martell.zuzino.mipt.ru>
Date:	Wed, 16 Apr 2008 23:00:57 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Cc:	linux-kernel@...r.kernel.org, ebiederm@...ssion.com,
	viro@...iv.linux.org.uk
Subject: Re: Current git tree broke busybox start-stop-daemon

On Wed, Apr 16, 2008 at 07:25:02PM +0200, Joakim Tjernlund wrote:
> open("/proc/1/stat", O_RDONLY|O_LARGEFILE) = 4
> _llseek(4, 0, 0xbfb94898, SEEK_END)     = -1 EINVAL (Invalid argument)

> So it appears that lseek is no longer allowed for /proc/1/stat
> Bug or feature?
> start-stop-daemon works fine in 2.6.23

That's what happens when switching ->llseek method from NULL
(effectively, default_llseek), to seq_lseek (which rejects SEEK_END).

commit be614086a4aff163d5aa0dc160638d1193b59cde
commit ee992744ea53db0a90c986fd0a70fbbf91e7f8bd

Al, do you remember why SEEK_END was omitted back then?

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