From: Bruce Woodward <bruce.woodward@...>
Date: 2006-04-11T07:12:54+09:00
Subject: Re: Strange problem with PTY.spawn()

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Reto,

Looking at ruby-1.8.4/ext/pty/pty.c, line 351. To get the runtime error
"can't get Master/Slave device" the opening on /dev/ptmx is failing.
Do you have the file /dev/ptmx?
On a Solaris 8 system here I have;

# uname -a
SunOS camsapc 5.8 Generic_117350-18 sun4u sparc SUNW,Ultra-Enterprise-10000
# ls -l /dev/ptmx
lrwxrwxrwx   1 root     root          30 Apr 16  2005 /dev/ptmx ->
../devices/pseudo/clone@0:ptmx
# ls -lL /dev/ptmx
crw-rw-rw-   1 root     sys       11, 23 Feb 19  2002 /dev/ptmx


good luck.

Bruce.


On 4/10/06, Reto Schuettel <reto-ruby-talk@schuettel.ch> wrote:
>
> Hi
>
> I've some troubles using PTY on a Solais 8 System:
>
> | $ ruby1.8 -rpty  -e 'PTY.spawn("/bin/telnet testsite1");  '
> | -e:1:in `spawn': can't get Master/Slave device (RuntimeError)
> |         from -e:1
>
> The system:
> | $ uname -a
> | SunOS hostname 5.8 Generic_108528-29 sun4u sparc SUNW,Sun-Fire-280R
>
> Ruby:
> | $ ruby1.8 -v
> | ruby 1.8.4 (2005-12-24) [sparc-solaris2.8]
>
> Everything works as it should with a old version of ruby:
> | $ ruby -v
> | ruby 1.6.8 (2002-12-24) [sparc-solaris2.8]
>
> I've attached the output of truss. Please let me know if more
> information is needed.
>
> Can anybody help me with this? I have no idea how I could fix/avoid this
> problem.
>
> Cheers,
> Reto Schuettel
>
>

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