[Bug 3891] New: Wine runs out of file descriptors no matter what ulimit -n is set to

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=3891

           Summary: Wine runs out of file descriptors no matter what ulimit
                    -n is set to
           Product: Wine
           Version: 0.9.1.
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: wine-misc
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: alaeddinaydiner at yahoo.com


Hello,

This problem actually should not be that difficult to fix if wine can simply
properly close the (pipe?) file descriptors it used. Let me elaborate...

I have managed to run the Belkin GPS Navigator under wine without any _real_
problems after I connect to the GPS using hcitool and rfcomm, both being
Bluetooth commands. 

The problem is that it stops running after a while. My setup is such that com8
under ~/.wine/dosdevices points to /dev/rfcomm0. Wine stops with a "too many
file descriptors" error in the wine client. The problem turned out to be not
that there are so many files that need to be opened but that wine repeatedly
opens /dev/rfcomm0, which is easy to see under /proc/wine_client_pid/fd. Here is
a snapshot after I set ulimit to 20000!

lrwx------  1 alaeddin alaeddin 64 Kas 20 09:07 5609 -> /dev/rfcomm0
lr-x------  1 alaeddin alaeddin 64 Kas 20 09:07 5610 -> pipe:[234038]
l-wx------  1 alaeddin alaeddin 64 Kas 20 09:07 5611 -> pipe:[234037]
lrwx------  1 alaeddin alaeddin 64 Kas 20 09:07 5612 -> /dev/rfcomm0
lr-x------  1 alaeddin alaeddin 64 Kas 20 09:07 5613 -> pipe:[234039]
l-wx------  1 alaeddin alaeddin 64 Kas 20 09:07 5614 -> pipe:[234039]
lrwx------  1 alaeddin alaeddin 64 Kas 20 09:07 5350 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Kas 20 09:07 5351 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Kas 20 09:07 5352 -> /dev/rfcomm0

Here is what happens after a while when the above pipes die or are not used and
the wine client keeps opening new ones:

$ls -alt | head
total 5981
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5932 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5933 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5934 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5935 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5936 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5937 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5938 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5939 -> /dev/rfcomm0
lrwx------  1 alaeddin alaeddin 64 Nov 20 09:08 5940 -> /dev/rfcomm0

Could wine make sure that pipes/file descriptors to com devices are closed
properly after they are opened?

Thanks for the great software!
Alaeddin awaiting wine to crash soon. :-)

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