[Slackbuilds-users] All-writable directory under /opt

[B. Watson]

On Fri, 3 May 2024, Daniel Prosser wrote:

> An alternative potential solution that I think would work would be to have 
> the SlackBuild script copy the file, selecting a build that would work for 
> everyone.

I can think of three approaches that avoid a world-writable directory
in /opt.

1. Duplicate (or copy/paste, if possible) the logic it uses to decide
    which binary to copy, and put the logic in the SlackBuild (you
    could also just rm the other binaries, since they'll be unused).
    Or maybe do it in the doinst.sh.

2. Mention in the README that it has to be run as root, once, to
    set up the engine. Further, you could replace the game binary with
    a script that checks whether the copy/symlink exists, and if it
    doesn't exist, bail out with a message telling the user to run it
    as root.

3. If the main game binary (the thing that copies the engine file) is
    a regular binary (not a script), you could make it run setgid
    games, and make the engine directory writable by (owned by) the
    games group. This is how a lot of games handle their high-scores
    file (in /var/games/<whatever>/). But this won't work if the main
    game binary is a script (shell, perl, python, etc).