Subject: Re: [PATCH bpf-next v4 2/5] libbpf: Store map pin path and status in struct bpf_map

From: Toke Høiland-Jørgensen <[email-masked]>
Date: Thu, 31 Oct 2019 18:31:01 +0100

Andrii Nakryiko <[email-masked]> writes:

> [...]
>
>>
>>         return err;
>> @@ -4131,17 +4205,24 @@ int bpf_object__unpin_maps(struct bpf_object *obj, const char *path)
>>                 return -ENOENT;
>>
>>         bpf_object__for_each_map(map, obj) {
>> +               char *pin_path = NULL;
>>                 char buf[PATH_MAX];
>
> you can call buf as pin_path and get rid of extra pointer?

The idea here is to end up with bpf_map__unpin(map, NULL) if path is
unset. GCC complains if I reassign a static array pointer, so don't
think I can actually get rid of this?

-Toke