From: "Parag N(पराग़)" <panemade@gmail.com>
To: chinmaya@innomedia.soft.net
Cc: "Linux Kernel" <linux-kernel@vger.kernel.org>
Subject: Re: Gettin own IP address thorugh ioctl in kernel space.
Date: Wed, 19 Jul 2006 15:22:33 +0530 [thread overview]
Message-ID: <f4586a2e0607190252g61e97f35o220dfde4e5401afd@mail.gmail.com> (raw)
In-Reply-To: <44BDFC64.607@innomedia.soft.net>
Hi,
On 7/19/06, Chinmaya Mishra <chinmaya4@gmail.com> wrote:
> 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.
Check point 29 from http://kasperd.net/~kasperd/comp.os.linux.development.faq.
Modify that source code according to your needs.
Regards,
Parag.
next prev parent reply other threads:[~2006-07-19 9:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-19 9:33 Chinmaya Mishra
2006-07-19 9:52 ` Parag N(पराग़) [this message]
2006-07-19 11:56 ` Erik Mouw
2006-07-19 15:07 ` Jan Engelhardt
2006-07-19 15:23 ` Valdis.Kletnieks
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