On Tue, Jun 13, 2000 at 08:55:50AM -0500, Dave Dykstra wrote:
> Here's the status of the most recent releases of rsync:
> 2.4.3 - sets O_NONBLOCK on stdin and stdout. There haven't been
> reports that it still hangs ssh, but there have been numerous
> reports that it gets rsync protocol errors ("unexpected tag" is the
> one most often reported). I wonder if ssh can't completely handle
> being in non-blocking mode, and I wonder if Wout's patch would solve
> those problems.
> 2.4.2 - similar to 2.4.3 except that it didn't work with rsh so it was
> shortlived.
Actually I just looked more closely and it appears that rsync is only
setting O_NONBLOCK on stdout in 2.4.3; that was the change between 2.4.2
and 2.4.3 to make rsh work again. It is still initially setting
O_NONBLOCK on both stdin and stdout but just before it execs rsh or ssh in
the child process it turns O_NONBLOCK off on stdin.
- Dave Dykstra
