[BProc] BProc & /dev/tty - anything to watch out?

[<ha...@no...>]

Dear BProc users and gurus,

I am trying to setup occasional master->slave OpenSSH access (just for
the convenience of environment, pty etc. during service work on slave
node).

It works but it cannot use controlling tty. Server process complains:

 n1 sshd[19675]: error: ioctl(TIOCSCTTY): Operation not permitted 
 n1 sshd[19675]: error: open /dev/tty failed - could not set controlling tty: No such device or address 

and client process complains:

 bash: initialize_job_control: setpgid: Operation not permitted

Then it works OK, just job control is missing. Server process is able
to use /dev/ptmx to allocate /dev/pts/0, it opens /dev/tty but then it
is unable to use it. This seemes strange to me.

At this moment I am not sure whether I should continue looking for
missing files, kernel modules etc. on slave node (usual game when you
insist on running some daemon :-) or delve into kernel sources and
look for strange interactions of BProc and controlling tty.


So, my only question is: Is it likely that controlling terminal things
are a bit broken in BProc patched kernel?

Just give me some opinions to let me search in more likely
directions...

Thanks

Vaclav Hanzl