[Devel] RFC: /proc/cmdline writeable by root

[Konstantin Khlebnikov]

On Dec 30, 2014 7:36 PM, "Sergey Korshunoff" <seyko2 at gmail.com> wrote:
>
> First time I patched an openvz kernel and vzctl for configuring a
> /proc/cmdline in CT. This was needed to properly run a my version of
> the gentoo without a change. Second time: I trying to make a universal
> livecd with android-x86. And to do this /proc/cmdline in CT0 must be
> writeable by a root user. Programs in the initrd can load a different
> video drivers, some drivers support a hardware acceleration, some
> don't. In the last case /proc/cmdline must contain HWACCEL=0. If the
> livecd is running by VirtualBox, then android.hardware=vm must be
> present in the /proc/cmdline. If /proc/cmdline will be writeable then
> a programs in the initrd can present a configuration menu to the user
> and a need to use a syslinux boot loader for this will go away.
>
> Any comments?

You could bind mount this file in some startup hook.

>
> PS: a patch for the second case is attached
>
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