https://bugs.exim.org/show_bug.cgi?id=1775
Kirill Miazine <km@???> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|4.86+ HEAD |4.87
Target Milestone|Exim 4.87 |Exim 4.88
CC| |hs@???
--- Comment #3 from Kirill Miazine <km@???> ---
I've been looking at this a bit more and had to dig down to the kernel. It
seems that EADDRINUSE will be returned if existing socket and new socket are
set up by different users:
http://bxr.su/OpenBSD/sys/netinetin_pcb.c#434
This looks indeed to be the case, change was introduced here:
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/netinet/in_pcb.c.diff?r1=1.8&r2=1.9&f=h
After adding some debugging to the kernel and re-running the test, I got a
confirmation that the different socket owners are indeed the reason for
EADDRINUSE:
EADDRINUSE! so->so_euid (1000) != t->inp_socket->so_euid (0)
In test 0562 the socket is set up as user root, while runtest in 0564 uses my
own user id to set up the socket.
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