freebsd stable - Oct 2006 - ggated not working on 6.2-PRERELEASE

Hello,

ggated is not working on 6.2-PRERELEASE.  For example, run the following
commands:

# dd if=/dev/zero of=md.img bs=1k count=1k
# mdconfig -a -t vnode -f md.img -u 0
# echo "127.0.0.1 RW /dev/md0" > /etc/gg.exports
# ggated
# ggatec create 127.0.0.1 /dev/md0

As the result, ggated outputs the following messages repeatedly to syslog:

ggated: Error while receiving hdr packet: Resource temporarily unavailable.
ggated: Exiting.

I tried to find what broke ggated, and finally found that it works fine
when I backout sys/kern/uipc_socket2.c rev. 1.147.2.7.

I don't know why the changes break ggated, but I hope that ggated will
work on 6.2-RELEASE.

-- 
Kazuaki ODA

I have CC'ed pjd too as this concerns ggate and I saw another thread
that looked like the same problem.

Kazuaki ODA <kaakun@highway.ne.jp> writes:
> ggated is not working on 6.2-PRERELEASE.  For example, run the following
> commands:
[snip]
> ggated: Error while receiving hdr packet: Resource temporarily unavailable.
> ggated: Exiting.
I am experiencing this too.
> I tried to find what broke ggated, and finally found that it works fine
> when I backout sys/kern/uipc_socket2.c rev. 1.147.2.7.
I will try to reproduce that here.
> I don't know why the changes break ggated, but I hope that ggated will
> work on 6.2-RELEASE.
As far as I can tell, src/sbin/ggate/ggated/ggated.c line 634 calls 
g_gate_recv, which in turn calls recv(2) on src/sbin/ggate/shared/ggate.c
line 254.

recv is called with the MSG_WAITALL flag and receives an EAGAIN error.
Is that supposed to happen? If it is, ggated should probably handle it.

-- 
Christian Laursen