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From: arisawa@ar.aichi-u.ac.jp
Date: Fri,  5 Aug 2005 07:05:27 +0900
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: [9fans] #D/ssl/n
Topicbox-Message-UUID: 72fce8ec-ead0-11e9-9d60-3106f5b1d025

Hello,

one of my hosts is rejecting cpu command.

term% cpu -h co
cpu: waiting for FS: Hangup: Hangup
term%
or more simply
term% cpu -h co
cpu: waiting for FS: :
term%

the host left message in /sys/log/cpu:
cpu: srvauth: can't establish ssl connection: no free devices

this message comes from srvp9auth(int fd, char *user) in cpu.c
         /* set up encryption */
         i = pushssl(fd, ealgs, fromserversecret, fromclientsecret, nil);
         if(i < 0)
                 werrstr("can't establish ssl connection: %r");

pushssl() in   /sys/src/libc/9sys/pushssl.c is
         ctl = open("#D/ssl/clone", ORDWR);
         if(ctl < 0)
                 return -1;

really
% cat '#D/ssl/clone'
cat: can't open #D/ssl/clone: no free devices
% ls '#D/ssl'|wc
     129     129    1569
note #D/ssl include clone, therefore
% ls '#D/ssl'|grep -v clone|wc
     128     128    1554

Questions
(1) 128 is the limit of #D/ssl/n ?
(2) why #D/ssl/n is not freed ?
(3) what happened with my host if it should be freed ? any suggestion 
welcome.
(4) how to fix? rebooting is required ?

thanks in advance.

Kenji Arisawa