Find IPv4 address(es) for an interface

Hello everyone,

Is there a /proc node that would return the IPv4 address(es) given to an
interface? (Where does ifconfig find the info?)

How does "ip address show dev eth1" work? (I'll take a look at the
source code tomorrow.)

Regards.

Spoon wrote:

> Is there a /proc node that would return the IPv4 address(es) given to an
> interface? (Where does ifconfig find the info?)
>
> How does "ip address show dev eth1" work? (I'll take a look at the
> source code tomorrow.)

Anyone?

On Wed, 07 Jun 2006 00:26:57 +0200, Spoon wrote:

> Is there a /proc node that would return the IPv4 address(es) given to an
> interface? (Where does ifconfig find the info?)
>
> How does "ip address show dev eth1" work? (I'll take a look at the
> source code tomorrow.)

> Anyone?

maybe a
strings /sbin/ifconfig | grep get
and strings /sbin/ifconfig | grep /proc
will give you some hints

Spoon <root@127.0.0.1> wrote:
>Spoon wrote:
>
>> Is there a /proc node that would return the IPv4 address(es) given to an
>> interface? (Where does ifconfig find the info?)
>>
>> How does "ip address show dev eth1" work? (I'll take a look at the
>> source code tomorrow.)
>
>Anyone?

If you want C code to do it, it is trivial.

Got to google's Usenet archives and search on these three words
'struct ifr floyd', and you will find several articles where I've
posted a demo program to do that.

If you don't find it, ask and I'll post it again.

--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) (E-Mail Removed)

On Wed, 07 Jun 2006 00:26:57 +0200, Spoon <root@127.0.0.1> wrote:

>Spoon wrote:
>
>> Is there a /proc node that would return the IPv4 address(es) given to an
>> interface? (Where does ifconfig find the info?)
>>
>> How does "ip address show dev eth1" work? (I'll take a look at the
>> source code tomorrow.)
>
>Anyone?

Sure it's there under /proc, IP addr in hexadecimal (lo 0000007F...

What you trying to do?

Grant.
--
But Linux grew from humble and stupid roots.

Linus -- lkml 24 Apr 2006