Messages in this thread | | | Subject | Re: permissions of /proc/tty/driver | From | Alan Cox <> | Date | Mon, 17 Jan 2005 12:23:08 +0000 |
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On Llu, 2005-01-17 at 08:14, Arjan van de Ven wrote: > On Sun, 2005-01-16 at 23:26 +0100, Christoph Hellwig wrote: > > I know. But that doesn't explain why we don't keep strict permissions > > only on that file but on the directory. > > ls -la on the file gives you the size maybe ?
I went for a dig in the archives
The original fix removed the tx/rx data from the file if you weren't priviledged. Linus did the directory hack because he didn't want to worry about drivers that got missed out/not fixed.
So there's a janitor project there - to go through all the tty/serial drivers and make sure they don't give out excessively useful information to non CAP_SYS_RAWIO users, then loosen permissions.
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