linux-kernel - Re: [Bugme-new] [Bug 10284] New: executables with read bit 'off' cannot open /dev/stdin

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Date:	Wed, 19 Mar 2008 21:01:15 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	bugme-daemon@...zilla.kernel.org, joe@...itfly.org
Subject: Re: [Bugme-new] [Bug 10284] New: executables with read bit 'off'
 cannot open /dev/stdin

On Wed, 19 Mar 2008 19:56:50 -0600
Matthew Wilcox <matthew@....cx> wrote:


> I've tried this program on 2.6.25-rc3-00093-g59e1338-dirty and it does
> not fail.
> 
> > > open("/dev/stdin", O_RDONLY)            = -1 EACCES (Permission
> > > denied)
> 
> Specifically, my tests show:
> 
> open-stdin-readable:open("/dev/stdin", O_RDONLY)            = 3
> open-stdin-unreadable:open("/dev/stdin", O_RDONLY)            = 3
> 
> Joe, can you try a more recent kernel?

another interesting question is if you're using some special LSM/security stuff..


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