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From: Andi Kleen <andi@firstfloor.org>
To: "Berger\, Lutz \(External\)" <Lutz.Berger.External@eads.com>
Cc: <linux-kernel@vger.kernel.org>,
        "Denninghoff\, Sven Dr. \(External\)" 
	<Sven.Denninghoff.External@eads.com>,
        "Maehner\, Herbert \(External\)" <Herbert.Maehner.External@eads.com>
Subject: Re: FW: FW: mq_open
References: <3388F73401504041BD8F7132BAE2C7D41F0812@GSX201B.mxchg.m.corp>
Date: Fri, 06 Aug 2010 12:30:34 +0200
In-Reply-To: <3388F73401504041BD8F7132BAE2C7D41F0812@GSX201B.mxchg.m.corp>
	(Lutz Berger's message of "Fri, 6 Aug 2010 07:42:15 +0200")
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"Berger, Lutz (External)" <Lutz.Berger.External@eads.com> writes:

>  
> Hello gentleman,
>
> we have a problem with 
> mq_open, shm_open and sem_open
>
> As stated in the manpage of "open(2)",  the
>   permissions of the created file are (mode & ~umask).
>
> But what is the use of the mode parameter, it it is not used like the programmers intention?
> On HP Unix or TRU64 the mode parameter is not modified.
>
> Could you please check, if this is a bug or a faulty system design on linux? 

Whatever it is -- it would be dangerous to change because suddenly
ignoring umask could add security problems to existing software.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.