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

[Collin Funk]

Samuel Thibault <samuel.thibault@ens-lyon.org> writes:

> ---
>  sysdeps/mach/hurd/setpriority.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/sysdeps/mach/hurd/setpriority.c b/sysdeps/mach/hurd/setpriority.c
> index f1ef46ca26..aff2014457 100644
> --- a/sysdeps/mach/hurd/setpriority.c
> +++ b/sysdeps/mach/hurd/setpriority.c
> @@ -17,6 +17,7 @@
>  
>  #include <hurd.h>
>  #include <hurd/resource.h>
> +#include <sys/param.h>
>  
>  /* Set the priority of all processes specified by WHICH and WHO
>     to PRIO.  Returns 0 on success, -1 on errors.  */
> @@ -27,6 +28,8 @@ __setpriority (enum __priority_which which, id_t who, int prio)
>    error_t pidloser, priloser;
>    unsigned int npids, ntasks, nwin, nperm, nacces;
>  
> +  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.

Collin