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

[Samuel Thibault]

Collin Funk, le dim. 09 nov. 2025 12:06:59 -0800, a ecrit:
> 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__?

You can make it conditional to clamp only for old glibc indeed.

Samuel