Re: [PATCH v4 2/2] libnetfilter_queue: add support for UID/GID socket info

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On Fri, Dec 20, 2013 at 05:28:54PM +0100, valentina.giusti@xxxxxxxxxxxx wrote:
> @@ -1180,6 +1183,18 @@ struct nfqnl_msg_packet_hw *nfq_get_packet_hw(struct nfq_data *nfad)
>  }
>  EXPORT_SYMBOL(nfq_get_packet_hw);
>  
> +uint32_t nfq_get_uid(struct nfq_data *nfad)
> +{
> +	return ntohl(nfnl_get_data(nfad->data, NFQA_UID, u_int32_t));
> +}
> +EXPORT_SYMBOL(nfq_get_uid);

Given that we'll have cases in which uid would not be present, I think
that the following interface would be better:

        int nfq_get_uid(struct nfq_data *nfad, uint32_t *uid)

The function returns 1 if uid has been set (ie. it's available so you
can access it), otherwise it returns 0.

Same thing for _get_gid().

Thanks.
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