Re: /linuxrc query

[Werner Almesberger <Werner.Almesberger@epfl.ch>]

Amit D Chaudhary wrote:
> what does redirecting stdin\stdout\stderr to dev/console achieve? I thought 
> since the root is now the "new" root, dev/console will be used automatically?

No, you would continue using the file descriptors which are already
open, i.e. on /dev/console on the old root.

> Also, why chroot, why not call init directly?

To make sure the root of the current process is indeed changed.
pivot_root currently forces a chroot on all processes (except the
ones that have explicitly moved out of /) in order to move all the
kernel threads too, but this is not a nice solution. Once a better
solution is implemented for the kernel threads, we might drop the
forced chroot, and then the explicit chroot here becomes important.

> Since the above never returns, what follows in not freed.

You can run them later, e.g. /etc/rc.d/rc.local
Or, if you needs the space immediately,  make "what-follows" a
script than first frees them, and then exec's init.

- Werner

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