Pseudoterminals increase: compilation error

[Unga]

--- On Sun, 7/20/08, Dan Nelson <dnelson at allantgroup.com> wrote:

> Expect's error message doesn't say anything except
> "something isn't
> working but I won't tell you what".  Run
> 
> truss -o truss.log -f expect -c "spawn ls" 
> 
> and determine which syscall is failing, with what error
> number, just
> before expect prints its "no more ptys" message. 
> That will tell you
> whether it's a permissions issue, or something else. 
> If there are no
> obvious errors, post a part of the log.
> 
> Also, what version of expect are you running?  Versions
> between
> 5.38.0_1 and 5.43.0_2 had a bug in the port Makefile that
> limited the
> number of ptys expect could see.  See
> http://www.freebsd.org/cgi/query-pr.cgi?pr=108311 .
> 

Here are more detail. In fact, I noted it through strace after my previous email. 

ls -l /dev/ | grep pty
crw-rw-rw-  1 root  wheel       0, 169 Jul 20 10:11 ptyp0
crw-rw-rw-  1 root  wheel       0, 171 Jul 20 10:22 ptyp1

truss -o truss.log -f expect -c "spawn ls"

 1178: open("/dev/ptyp0",O_RDWR,027757763030)    ERR#5 'Input/output error'
 1178: open("/dev/ptyp1",O_RDWR,027757763030)    ERR#5 'Input/output error'
 1178: open("/dev/ptyp2",O_RDWR,027757763030)    = 5 (0x5)
 1178: fstat(5,{mode=crw-rw-rw- ,inode=178,size=0,blksize=4096}) = 0 (0x0)
 :
 :
 1178: chown("/dev/ttyp2",1002,4)                ERR#1 'Operation not permitted'
 1178: close(5)                                  = 0 (0x0)
 1178: close(-1)                                 ERR#9 'Bad file descriptor'
 1178: close(-1)                                 ERR#9 'Bad file descriptor'
 1178: open("/",O_RDONLY,027757764430)           = 5 (0x5)
 1178: close(5)                                  = 0 (0x0)
 1178: write(2,"The system has no more ptys.  As"...,106) = 106 (0x6a)
 1178: write(2,"\r\n",2)                         = 1179 (0x49b)
 = 2 (0x2)

ls -l /dev/ | grep pty
crw-rw-rw-  1 root  wheel       0, 169 Jul 20 10:11 ptyp0
crw-rw-rw-  1 root  wheel       0, 171 Jul 20 10:23 ptyp1
crw-rw-rw-  1 root  wheel       0, 178 Jul 20 10:11 ptyp2

I'm using Expect-5.43.0 compiled from sources.

So, it looks like some sort of a misconfiguration. Still investigating.

Regards
Unga