netdev - Re: Use ioctl() to list all network interfaces.

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Date:	Thu, 6 Jan 2011 17:07:16 +0000
From:	Alexander Clouter <alex@...riz.org.uk>
To:	netdev@...r.kernel.org
Subject: Re: Use ioctl() to list all network interfaces.

Chin Shi Hong <cshong87@...il.com> wrote:
>
> The following codes are just part of my application's source codes:
> 
> --begin of some codes--
> ifconf ifc;
> ret = ioctl(n, SIOCGIFCONF,&ifc);
> --End of some codes--
> 
> My application's role is to display all network interfaces, including
> the network interface which are down.
> 
> However, with the above codes, my application only display the network
> interface which are already up. The network interface which are down
> will not be displayed.
> 
> So, what can I do to make my application display all network
> interfaces, including the network interface which are down?
>
getifaddrs(), you get the IPv6 ones too this way.

Cheers

-- 
Alexander Clouter
.sigmonster says: I've only got 12 cards.

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