On Wed, May 08, 2013 at 11:13:43AM +0200, Hannes Reinecke wrote:
> This is a partial revert of commit
> 'Stop annoying prio_lookup warning messages',
> as that patch would only fix the 'prio_put' case.
> However, as the prio name might be empty even in
> in prio_get() we should rather fix this in
> prio_lookup() and handle both cases.
My feeling was that you would want to get that warning message if you
failed to get the prioritizer in prio_get() because the name was empty.
With this change it will silently fail unless you have the verbosity set
to 3, in which case you'll get a message like
sdb: prio = (config file default)
Which doesn't really look that much like an error.
On the other hand, if you never got a prioritizer at all, you don't want
a warning message when you try to free it in prio_put() since that's
only happening because there is nothing to free.
What you you think?
-Ben
>
> Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
>
> diff --git a/libmultipath/prio.c b/libmultipath/prio.c
> index 186cc4d..05a8cf1 100644
> --- a/libmultipath/prio.c
> +++ b/libmultipath/prio.c
> @@ -64,6 +64,9 @@ struct prio * prio_lookup (char * name)
> {
> struct prio * p;
>
> + if (!name || !strlen(name))
> + return NULL;
> +
> list_for_each_entry(p, &prioritizers, node) {
> if (!strncmp(name, p->name, PRIO_NAME_LEN))
> return p;
> @@ -162,10 +165,7 @@ void prio_put (struct prio * dst)
> if (!dst)
> return;
>
> - if (!strlen(dst->name))
> - src = NULL;
> - else
> - src = prio_lookup(dst->name);
> + src = prio_lookup(dst->name);
> memset(dst, 0x0, sizeof(struct prio));
> free_prio(src);
> }
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