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Date: Wed, 28 Mar 2001 15:04:46 +0100
To: Walter Hofmann <snwahofm@mi.uni-erlangen.de>
Cc: linux-kernel@vger.kernel.org
From: Simon Williams <announce@sis-domain.demon.co.uk>
Subject: Re: Disturbing news..
References: <01032806093901.11349@tabby> <Pine.GSO.3.96.1010328144551.7198A-100000@laertes>
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In message <Pine.GSO.3.96.1010328144551.7198A-100000@laertes>, Walter
Hofmann <snwahofm@mi.uni-erlangen.de> writes
>
>
>On Wed, 28 Mar 2001, Jesse Pollard wrote:
>
>> >Any idea?
>> 
>> Sure - very simple. If the execute bit is set on a file, don't allow
>> ANY write to the file. This does modify the permission bits slightly
>> but I don't think it is an unreasonable thing to have.
>
>And how exactly does this help?
>
>fchmod (fd, 0666);
>fwrite (fd, ...);
>fchmod (fd, 0777);
>

I think their point was that a program could only change permissions
of a file that was owned by the same owner.  If a file is owned by a
different user & has no write permissions for any user, the program
can't modify the file or it's permissions.

Sounds like a good plan to me.


-- 
Simon Williams
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