netdev - Re: [PATCH v2 net-next] net: Deprecate SO_DEBUG and reclaim SOCK

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Date: Thu, 15 Feb 2024 15:14:21 +0100
From: Alexandra Winter <wintera@...ux.ibm.com>
To: Kuniyuki Iwashima <kuniyu@...zon.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Matthieu Baerts <matttbe@...nel.org>,
        Mat Martineau <martineau@...nel.org>,
        Wenjia Zhang <wenjia@...ux.ibm.com>, Jan Karcher <jaka@...ux.ibm.com>,
        Wen Gu <guwen@...ux.alibaba.com>, Tony Lu <tonylu@...ux.alibaba.com>,
        "D . Wythe" <alibuda@...ux.alibaba.com>
Cc: Kuniyuki Iwashima <kuni1840@...il.com>, netdev@...r.kernel.org,
        mptcp@...ts.linux.dev, linux-s390@...r.kernel.org,
        Gerd Bayer <gbayer@...ux.ibm.com>
Subject: Re: [PATCH v2 net-next] net: Deprecate SO_DEBUG and reclaim SOCK_DBG
 bit.



On 14.02.24 20:54, Kuniyuki Iwashima wrote:
> +	case SO_DEBUG:
> +		/* deprecated, but kept for compatibility */
> +		if (val && !sockopt_capable(CAP_NET_ADMIN))
> +			ret = -EACCES;
> +		return 0;

Setting ret has no effect here. Maybe you mean something like:
> +		if (val && !sockopt_capable(CAP_NET_ADMIN))
> +			return -EACCES;
> +		return 0;

or 

return (val && !sockopt_capable(CAP_NET_ADMIN)) ? -EACCESS : 0;