Problem with Pseudo-Terminals on SGI Indigo...

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2 total messages Started by Robert Duff Fri, 08 Jan 1993 21:43

#123

Author: Robert Duff
Date: Fri, 08 Jan 1993 21:43

17 lines
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We have an Indigo XS24 running IRIX 4.0.5F.

Several programmers are writting applications that use /dev/ttyq*
devices for pseudo terminals.  The problem is that whenever a ttyq* is
opened, the ownership of the device is changed to that user.
Afterward, no one else has permission to use that ttyq*.  Is there
anyway I can make these pseudo terminals usable by users yet not
allowing the change in ownership?

Thanks,
--
===============================================================================
Robert Duff              | "Let him who boasts boast of this, that he under-
Automation and Robotics  | stands and knows me, that I am the Lord who exer-
Research Institute - UTA | cises kindness, justice, and righteousness on earth,
rduff@arri.uta.edu       | for I delight in these things." Jeremiah 9:24

Re: Problem with Pseudo-Terminals on SGI Indigo...

#124

Author: Vernon Schryver
Date: Fri, 08 Jan 1993 23:57

22 lines
1270 bytes

In article <RDUFF.93Jan8154350@arrirs04.uta.edu>, rduff@arrirs04.uta.edu (Robert Duff) writes:
> 
> We have an Indigo XS24 running IRIX 4.0.5F.
> 
> Several programmers are writting applications that use /dev/ttyq*
> devices for pseudo terminals.  The problem is that whenever a ttyq* is
> opened, the ownership of the device is changed to that user.
> Afterward, no one else has permission to use that ttyq*.  Is there
> anyway I can make these pseudo terminals usable by users yet not
> allowing the change in ownership?

Tell them to read `man getpty`.  It is intended to solve exactly such
problems without opening security holes.

By the way, the "Distribution: comp" line in your article probably
significantly reduced the number of people who saw it, and so
reduced the number of people who might answer the question.

Vernon Schryver,  vjs@sgi.com

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