FYI:
We found out that the patch below which was introduced in 2.2.5ac2 makes
that sshd can't start interactive shells anymore on our Alpha machine.
Non-interactive commands still work.
This is logged to syslog:
"sshd[293]: fatal: Local: Command terminated on signal 1."
When we replace n_tty.c in our 2.2.5ac4 tree with the version from
2.2.5ac1 the problem goes away.
Greetings,
Rob van Nieuwkerk
Sysinfo:
--------
- 2 CPU Alpha Server 2000 ("Sable")
- Linux 2.2.5ac4 SMP kernel
- sshd 2.0.12 (with remote ssh-1.2.26 client)
- up-to-date Red Hat 5.2
The "problem" patch from 2.2.5ac2:
----------------------------------
o Non blocking tty fix (Tobias Ringstrom)
--- n_tty.c.orig Wed Apr 7 23:00:40 1999
+++ n_tty.c.ac4.orig Tue Apr 6 18:28:38 1999
@@ -922,8 +922,14 @@
}
}
- if (down_interruptible(&tty->atomic_read))
- return -ERESTARTSYS;
+ if (file->f_flags & O_NONBLOCK) {
+ if (down_trylock(&tty->atomic_read))
+ return -EAGAIN;
+ }
+ else {
+ if (down_interruptible(&tty->atomic_read))
+ return -ERESTARTSYS;
+ }
add_wait_queue(&tty->read_wait, &wait);
set_bit(TTY_DONT_FLIP, &tty->flags);
-
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