Gernot Payer <[email protected]> wrote:
>
> while running the openposix testsuite I saw testcase timer_create/9-1.c
> failing. This testcase tests whether timers are disarmed when a process calls
> exec, as described in e.g.
> http://www.opengroup.org/onlinepubs/009695399/functions/timer_create.html.
>
> The attached one-liner patch (+ one line comment) fixes this issue. I did the
> diff against 2.6.12.1, but the fix is pretty much the same for every other
> 2.6.x kernel I had a look at.
>
> I don't think this patch breaks anything, as relying on this (undocumented)
> behaviour would imho be bad style.
>
> So tell me what you think, and if you have some pointers to interesting
> discussions about Linux and POSIX compliance then I would like to read that
> as well.
>
> --- linux-2.6.12.1-orig/fs/exec.c 2005-06-29 14:29:31.069738264 +0200
> +++ linux-2.6.12.1/fs/exec.c 2005-06-29 14:34:46.034856288 +0200
> @@ -1200,6 +1200,10 @@
> acct_update_integrals(current);
> update_mem_hiwater(current);
> kfree(bprm);
> +
> + /* delete old itimers */
> + exit_itimers(current->signal);
> +
> return retval;
> }
Ouch. What does 2.4.x do?
It wouldn't surprise me if fixing this breaks _something_ out there. We
might have to remain non-POSIX-compliant for the rest of time.
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