"Joachim Schmitz" <j...@schmitz-digital.de> writes:

>> > > Should we leave tv_usec untouched then? That was we round up on
>> > > the next (and subsequent?) round(s). Or just set to ENOTSUP in
>> > > setitimer if ovalue is !NULL?
>> >
>> > I was alluding to the latter.
>> 
>> OK, will do that then.

Thanks.

>> Unless I screwed up the operator precedence?

I think you did, but not in the version we see below.

> int git_setitimer(int which, const struct itimerval *value,
>                               struct itimerval *ovalue)
> {
>       int ret = 0;
>
>       if (!value ) {

Style: space before ')'?

>               errno = EFAULT;
>               return -1;

EFAULT is good ;-)

The emulation in mingw.c 6072fc3 (Windows: Implement setitimer() and
sigaction()., 2007-11-13) may want to be tightened in a similar way.

>       }
>
>       if ( value->it_value.tv_sec < 0

Style: space after ')'?

>           || value->it_value.tv_usec > 1000000
>           || value->it_value.tv_usec < 0) {
>               errno = EINVAL;
>               return -1;
>       }
>
>       if ((ovalue) && (git_getitimer(which, ovalue) == -1))
>               return -1; /* errno set in git_getitimer() */

As nobody passes non-NULL ovalue to setitimer(), I think we should
instead get rid of git_getitmier() implemenation, and change this to

        if (ovalue) {
                errno = ENOTSUP;
                return -1;
        }

which is how I understood what "the latter" in the paragraph I
quoted from you above meant.

>       switch (which) {
>       case ITIMER_REAL:
>                /* If tv_usec is > 0, round up to next full sec */
>               alarm(value->it_value.tv_sec + (value->it_value.tv_usec > 0));

OK.

>               ret = 0; /* if alarm() fails, we get a SIGLIMIT */
>               break;
>       case ITIMER_VIRTUAL:
>               case ITIMER_PROF:
>               errno = ENOTSUP;
>               ret = -1;
>               break;
>       default:
>               errno = EINVAL;
>               ret = -1;
>               break;
>       }
>
>       return ret;
> }

Other than that, looks good.

Thanks.
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