[hurd, commited] hurd: make setpriority clamp nice values to 0..2*NZERO-1 [BZ #33614]

[Collin Funk]

Samuel Thibault <samuel.thibault@gnu.org> writes:

>> > +  prio = MAX (0, MIN (2 * NZERO - 1, prio));
>> > +
>> >    error_t setonepriority (pid_t pid, struct procinfo *pi)
>> >      {
>> >        task_t task;
>> 
>> Isn't NZERO defined to 20 on Hurd? That means (2 * NZERO - 1) == 39, but
>> Hurd's max niceness is 38.
>
> I fixed that part in Gnumach.

Great, thanks! My coreutils change, which I have not pushed yet [1],
clamped the value from 0 - 38 inclusive if __gnu_hurd__ was defined.

Should that be changed to also check that glibc ≤ 2.42 based on
__GLIBC__ and __GLIBC_MINOR__?

Collin

[1] https://lists.gnu.org/archive/html/coreutils/2025-11/msg00096.html