Anybody have a patch for pdksh derivatives, for jails?

[Tom Evans]

On Sun, 2008-02-24 at 19:42 +0100, cali clarke wrote:
> Hi.
> 
> pdksh and derivatives (openbsd ksh, mirbsd mksh etc) all have
> the same "bug" with regards to jails. On all of my systems, trying
> to start *ksh in a jail results in a message that /dev/tty could
> not be opened (device busy) and that the shell will not have
> job control. For some reason, this makes pretty much any
> curses or screen editor fail to run.
> 
> Note that also, this problem does NOT occur if you use ssh
> to enter the jail as I believe ssh handles tty allocation in
> advance.
> 
> I wondered if anybody had patched their *ksh to workaround
> this problem?
> 
> I've had a look at the sources myself and... ugh. The insides
> of a unix shell are not something I particularly want to spend
> much time examining...

Running something like 'jexec 1 /bin/sh' won't allow you to allocate a
tty. If instead you enable sshd inside the jail, and ssh into the jail,
sshd will allocate you a tty, and everything will work normally.

HTH
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