netdev - Re: [PATCH v2 3/5] netlink: move extack setting into validate

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Date:   Wed, 19 Sep 2018 21:52:48 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc:     David Ahern <dsahern@...il.com>
Subject: Re: [PATCH v2 3/5] netlink: move extack setting into validate_nla()

On Wed, 2018-09-19 at 21:49 +0200, Johannes Berg wrote:
> 
>  	case NLA_REJECT:
> -		if (pt->validation_data && error_msg)
> -			*error_msg = pt->validation_data;
> +		NL_SET_BAD_ATTR(extack, nla);
> +		if (extack && pt->validation_data)
> +			 extack->_msg = pt->validation_data;
>  		return -EINVAL;

Damn. This of course needs to happen only if pt->validation_data is set,
otherwise it needs to "goto out_err" to set the default message.

I'll respin another day with that fixed, and any other comments that
come in until then addressed.

Sorry for the noise :-(

johannes