[RFC PATCH] mempool: Fix some Coverity defects

[Stephen Hemminger]

On Mon,  9 Jun 2025 14:42:26 +0000
Morten Brørup <mb at smartsharesystems.com> wrote:

> @@ -141,8 +141,13 @@ rte_mem_page_size(void)
>  {
>  	static size_t page_size;
>  
> -	if (!page_size)
> +	if (page_size == 0) {
> +		errno = 0; /* man sysconf(3) */
>  		page_size = sysconf(_SC_PAGESIZE);
> +		if ((ssize_t)page_size < 0)
> +			rte_panic("sysconf(_SC_PAGESIZE) failed: %s",
> +					errno == 0 ? "Indeterminate" : strerror(errno));
> +	}

Why not make page_size a ssize_t or long?
The return value of sysconf is long.
Not sure if setting errno to zero is required, sysconf only touchs it if return value is negative.