Re: Gettin own IP address thorugh ioctl in kernel space.

From: Parag N(àààà)
Date: Wed Jul 19 2006 - 05:50:51 EST

On 7/19/06, Chinmaya Mishra <chinmaya4@xxxxxxxxx> wrote:

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

How to port this in keernel space.
Check point 29 from
Modify that source code according to your needs.
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