Pseudo tty pair

        I have an old application that is being moved from UNIX to Linux and it can only open what it thinks is a physical tty device. On the UNIX system we have a process called ptsd (Pseudo Terminal Server Daemon). It opens some configured number or Pseudo tty pairs (/dev/ptyp0 + /dev/ttyp0) and waits for the Application to connection to one of the slave pseudo ttys (i.e. /dev/ttyp0). Then the ptsd process forks and runs a copy of itself, that will interact with the user as if they were connected to a terminal server. It will allow them to make a telnet connect (I know all about telnet not being secure and everybody should be using ssh) to some where. It handles the telnet protocol and the Application just thinks it is reading and writing to a physical tty device.

        We are running RedHat AS 4.4 and later will be running AS 5.X.
>From what I can tell both have the /dev/ptmx device and the /dev/pts
directory. By opening the /dev/ptmx file with certain options it will create the next unused number in the /dev/pts directory. The problem is the Application has to know the name of the pseudo so it can open it. So I need the old style /dev/ttyp0 + /dev/ptyp0 so they can be configured and known ahead of time.

        Is there a loadable module that will give this functionality?

        Do I have to configure the kernel and rebuild the kernel to get this functionality?

---
Jack Allen

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