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Date:   Thu, 14 May 2020 17:52:27 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     hch@....de
Cc:     kuba@...nel.org, kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] ipv4,appletalk: move SIOCADDRT and SIOCDELRT
 handling into ->compat_ioctl

From: Christoph Hellwig <hch@....de>
Date: Thu, 14 May 2020 16:45:35 +0200

>  #ifdef CONFIG_COMPAT
> +static int atalk_compat_routing_ioctl(struct sock *sk, unsigned int cmd,
> +		struct compat_rtentry __user *ur)
> +{
> +	struct rtentry rt;
> +	compat_uptr_t rtdev;
> +

Reverse christmas tree please.

>  static int atalk_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  {
> +	struct sock *sk = sock->sk;
> +	void __user *argp = compat_ptr(arg);

Likewise.

> diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
> index 6177c4ba00370..b99c5e36e0a8f 100644
> --- a/net/ipv4/af_inet.c
> +++ b/net/ipv4/af_inet.c
> @@ -968,17 +969,42 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  EXPORT_SYMBOL(inet_ioctl);
>  
>  #ifdef CONFIG_COMPAT
> +static int inet_compat_routing_ioctl(struct sock *sk, unsigned int cmd,
> +		struct compat_rtentry __user *ur)
> +{
> +	struct rtentry rt;
> +	compat_uptr_t rtdev;

Likewise.

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