flock(1) exit code (enhancement request)

[Jan Kasprzak]

        Hello, coreutils developers!

I use flock(1) from coreutils in my scripts, and with --wait or --nonblock
I would like to be able to distinguish between the "conflicting lock exists"
and "-c <command> exited with code 1" states.

        Of course, I can always wrap the -c argument with something like
bash -c "<original_cmd_and_args> || exit 2" with yet another level of
quoting, but I think it is really ugly.

        This problem can be solved for example by mapping the exit code 1
of the -c command to something else. I.e. to add something like

        -m <number>
        --map-exit-code-1-to <number>

where the exit code of flock(1) would be <number>, iff the -c <command> exits
with code 1.

        What do you think about it? If you agree with the above syntax,
I can of course post a patch to flock(1).

        Thanks,

-Yenya

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| Jan "Yenya" Kasprzak  <kas at {fi.muni.cz - work | yenya.net - private}> |
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