netdev - Re: [PATCH] net/ipv6: check for mistakenly passed in non-AF

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Date:	Tue, 7 Jun 2011 09:25:01 +0200 (CEST)
From:	Reinhard Max <max@...e.de>
To:	Marcus Meissner <meissner@...e.de>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] net/ipv6: check for mistakenly passed in non-AF_INET6
 sockaddrs

On Mon, 6 Jun 2011 at 18:00, Marcus Meissner wrote:

> Same check as for IPv4, also do for IPv6.
> [...]
> +
> +	if (addr->sin6_family != AF_INET6)
> +		return -EINVAL;
> +

According to the POSIX manpage for bind(), the error code should be 
EAFNOSUPPORT ("The specified address is not a valid address for the 
address family of the specified socket"). This would also match the 
error code of connect() in the same situation.

And I think the family should be checked before the length for both, 
bind() and connect(), to get more descriptive error messages when 
passing an address of the wrong family.

cu
 	Reinhard
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