Migrating app from 3.2v4.2 to OpenServer 5.0.7?

From: Brian Lavender (brian_at_brie.com)
Date: 05/09/03

  • Next message: Ian Wilson: "Re: gzip OSR 5.0.7 File Size Limit Exceeded (core dumped)" 
    Date: Fri, 09 May 2003 00:46:39 -0700

    I have an orthodontics application running on 3.2v4.2 This is somewhat
    similar to another post, but a different approach.

    Should I:

    1. Try to build another 3.2v4.2 box
    2 Convert the app to 5.0.7
    3. Run it under Linux-ABI

    I am thinking that there might be issues that could cause this to be
    somewhat difficult. Here's what I have. This is an old (still useful)
    terminal based application along with some dumb terminals and some
    logins through the TCP/IP network.

    The OrthoTrac system uses user ID's 200 through 240. It also has these
    users in the group called group which has a gid of 50. Are these
    uid/gid's reserved on the new version of Openserver?

    The app talks directly to the printer through the parallel port, and
    it looks like the app has /dev/slp1 hard coded into it in various
    areas. It also communicates with two serial based printers. The
    application talks directly to the device with its own drivers. Is
    /dev/slp1 still the device name of the printer on parallel port one?
    Am I going to have to tweak 5.0.7 to allow this direct device access?
    In fact, it seems wierd that this is the device name on 3.2v4.2,
    unless I got misinterpreted something somewhere.

    The app looks as if it forks, or calls another process that wants to
    write to the /dev/tty. In fact, the .profile for the ortho user
    executes a command that adds write privilege to all the /dev/tty*. Is
    /dev/tty* still the name of the pseudo terms in 5.0.7. I have had some
    problems with Linux's /dev/pts/* pseudo terminals.

    I am almost thinking that maybe I ought to build/obtain a box that is
    running 3.2v4.2 and use it as a failover. The app is working fine.
    It's just that there is no other server available if this one fails.

    I am most familiar with Linux, so I have been working with the
    application on Redhat 8 using ABI. THe cobol runtime seems to run
    well, but there seems to be problems with the way the software is
    accessing the hardware. I haven't seen any segfaults, but I can't seem
    to get strace to follow child processes, so it's hard to see where
    the app fails under Linux.

    brian 

    --
Brian E. Lavender
http://www.brie.com/brian/
brian
--
Brian E. Lavender
http://www.brie.com/brian/
  • Next message: Ian Wilson: "Re: gzip OSR 5.0.7 File Size Limit Exceeded (core dumped)"

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