netdev - Re: [PATCH 3/4] Phonet: cleanup pipe enable socket option

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Date:	Mon, 11 Oct 2010 12:20:28 +0530
From:	Kumar SANGHVI <kumar.sanghvi@...ricsson.com>
To:	Rémi Denis-Courmont <remi@...lab.net>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Rémi Denis-Courmont 
	<remi.denis-courmont@...ia.com>
Subject: Re: [PATCH 3/4] Phonet: cleanup pipe enable socket option

Hi,

On Fri, Oct 08, 2010 at 16:02:02 +0200, Rémi Denis-Courmont wrote:
> From: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
> 
> The current code works like this:
> 
>   int garbage, status;
>   socklen_t len = sizeof(status);
> 
>   /* enable pipe */
>   setsockopt(fd, SOL_PNPIPE, PNPIPE_ENABLE, &garbage, sizeof(garbage));
>   /* disable pipe */
>   setsockopt(fd, SOL_PNPIPE, PNPIPE_DISABLE, &garbage, sizeof(garbage));
>   /* get status */
>   getsockopt(fd, SOL_PNPIPE, PNPIPE_INQ, &status, &len);
> 
> ...which does not follow the usual socket option pattern. This patch
> merges all three "options" into a single gettable&settable option,
> before Linux 2.6.37 gets out:
> 
>   int status;
>   socklen_t len = sizeof(status);
> 
>   /* enable pipe */
>   status = 1;
>   setsockopt(fd, SOL_PNPIPE, PNPIPE_ENABLE, &status, sizeof(status));
>   /* disable pipe */
>   status = 0;
>   setsockopt(fd, SOL_PNPIPE, PNPIPE_ENABLE, &status, sizeof(status));
>   /* get status */
>   getsockopt(fd, SOL_PNPIPE, PNPIPE_ENABLE, &status, &len);
> 
> This also fixes the error code from EFAULT to ENOTCONN.
> 
> Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
> Cc: Kumar Sanghvi <kumar.sanghvi@...ricsson.com>
 
Thank you!

BR,
Kumar.
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