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    SubjectRe: [linux-fbdev] fbdev 2.4.0 cleanups
    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.



    Geert Uytterhoeven -- There's lots of Linux beyond ia32 --

    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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