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exim 4.12-3 winsock problem (was Re: 1.3.21)


[I'm moving this thread to cygwin@, since it currently doesn't appear to
be a cygwin-developers@ issue...]

On Fri, Feb 21, 2003 at 02:12:09PM -0500, Jason Tishler wrote:
> On Fri, Feb 21, 2003 at 01:22:01PM -0500, Pierre A. Humblet wrote:
> > This reminds me of something similar, possibly last month.  Look for
> > "exim", "services", "gerritt" In the end it was because exim was
> > running as a special user who didn't have permission on the whole
> > tree under c:\winnt.  First make sure Everybody has rx access to it.

You may be onto something, see below...

> I found some 770s, changed them to 775, but still no luck.
> The above doesn't explain why the attached works when run under the
> exim account even with the "bad" permissions:
>     $ ssh exim at localhost /tmp/getservbyname
>     getservbyname(smtp, tcp) succeeded
>     port = 6400
> It also doesn't explain with gdb and strace "fixed" the bad
> permissions too.

See below...

On Fri, Feb 21, 2003 at 01:33:17PM -0500, Pierre A. Humblet wrote:
> FYI here is some correspondence from the previous similar problem. I
> had a private debugging conversation involving sending long straces
> etc...
> It was a winsock error due to permission problem.  winsock didn't init
> properly, and cywin went ahead anyway!
> *******************
> Thanks. It's definitely a winsock error.
> Looking into it.
>   627  272260 [main] exim-4.12-2 2816 wsock_init: res 10107 <==== SHOULD BE 0

Since the problem "goes away" with strace and in gdb, I have hacked my
DLL with the attached patches.  When I start exim under the LocalSystem
and exim accounts, I get the following:

    $ exim -bdf -q15m
    wsock_init(): wsock_started = 0
    wsock_init():  wsastartup = 0x7503d2c3
    wsock_init(): wsastartup() returned 10107
    getservbyname() failed with last error = 10093

Any further suggestions?  Note this is very painful to debug because I
can't use gdb and I can't send mail when trying to debug.  Sigh...  :,(


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