Messages in this thread | | | Date | Wed, 15 Mar 2000 21:07:11 +0100 (MET) | From | Geert Uytterhoeven <> | Subject | Re: [linux-fbdev] fbdev 2.4.0 cleanups |
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On Wed, 15 Mar 2000, Russell King wrote: > James A Simmons writes: > > > But anyway, i don't agree with you, there is no reason that a lots of people > > > can open /dev/fb in read only mode, sure if some guys want to write to it at > > > the same time, it could cause problems, ... > > > > Security :) One of the goals is to allow anyone to run a app on /dev/fb. > > No more root. > > Erm, this is probably a silly question, especially as I haven't been following > this thread in depth. > > If you're concerned about security, then you don't really want anyone to be > able to open /dev/fb and read what you've got on your console. Think about > it - allowing anyone to open /dev/fb means that you might as well broadcast > the picture that is on your monitor to everyone who has access to your > machine. > > I think think what you really want is to allow the user logged into the > console to be able to read/write the framebuffer, in much the same way that > /dev/console, /dev/dsp and friends are handled in a RedHat system - the > ownership of these "console" based devices is changed when a user logs in > at the console.
And changing the ownership of /dev/fb* is a userspace thingy, cfr. /dev/audio and friends.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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