Hi Daniel,

I have to create 10 namespaces(network), in each namespace I have to run two 
different processes.

Thanks
Mahesh

-----Original Message-----
From: Daniel Lezcano [mailto:daniel.lezc...@free.fr]
Sent: Tuesday, February 22, 2011 2:47 PM
To: Maheswara Reddy C - ERS, HCL Tech
Cc: lxc-devel@lists.sourceforge.net
Subject: Re: [lxc-devel] do pid1 and pid2 run in the same network namespace

On 02/22/2011 07:41 AM, Maheswara Reddy C - ERS, HCL Tech wrote:
> Hi All,
>
>
>
> Does this way both pid1 and pid2 run in the same network namespace? Or please 
> suggest any other way

Mahesh,

please tell us what you want to do.

If you want to create a new network namespace, it is not mandatory to
use clone. The following program will create a new network stack and all
new processes will inherit this network namespace.

#include <sched.h>
#include <stdio.h>
#include <unistd.h>

int main(int argc, char *argv[])
{

     pid_t pid;

     if (unshare(CLONE_NEWNET)) {
         perror("unshare");
         return 1;
     }

     pid = fork();
     if (pid < 0) {
         perror("fork");
         return 1;
     }

     if (!pid) {
         execl("/bin/bash", "/bin/bash", NULL);
         perror("execl");
     }

     return waitpid(pid, NULL, 0);
}

I recommand you read the documentation
http://lxc.sourceforge.net/doc/sigops/appcr.pdf

Thanks
   -- Daniel



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