linux-kernel - Gettin own IP address thorugh ioctl in kernel space.

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Message-ID: <44BDFC64.607@innomedia.soft.net>
Date:	Wed, 19 Jul 2006 15:03:24 +0530
From:	Chinmaya Mishra <chinmaya4@...il.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Gettin own IP address thorugh ioctl in kernel space.

Hi,

Can you provide an example how to invoke ioctl on
device in kernel module.

For example. I want to find out the IP address of
my eth0 and I want to make SIOCSIFADDR on it from 
kernel module.

At user space i am doing it like this.....

 unsigned long *ip;
 char *iface;
 int sockfd;
 struct ifreq ifr;
 strcpy(ifr.ifr_name, iface);	// interface name 'eth0'
 sockfd = socket(AF_INET,SOCK_DGRAM,0);
 ioctl(sockfd, SIOCGIFADDR, (char*)&ifr);
 memcpy(ip, &(ifr.ifr_addr.sa_data[2]),4); //Copy the ip addr
 close(sockfd);

How to port this in keernel space.

Thank you.
Chinmaya

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