On 02/22/2011 12:47 PM, Maheswara Reddy C - ERS, HCL Tech wrote:
> Hi,
> Shall I program this way to create 10 namespaces, with each namespace run 2
> different processes or any better way.
>
> #include<sched.h>
> #include<stdio.h>
> #include<unistd.h>
>
> int main(int argc, char *argv[])
> {
>
> for(i=0;i<10;i++)
> {
> pid_t pid1[10],pid2[10];
>
> int flag1= CLONE_NEWNS|CLONE_NETNET, flag2=0;
>
> int(*fun1[10]( ); // initialize statically
> int(*fun2[10]( );
>
>
> Pid1[i] = clone(fun1[i],0,flag1,0); // process 1
Process Pid1[i] will have its own network namespace.
> Pid2[i] = clone(fun2[i],0,flag2,0); // process 2
>
Process Pid2[i] will inherit the initial network namespace... I guess
that isn't what you want. If you want Pid2[i] to be in the same network
namespace as Pid1[i], then Pid2[i] should be a child of Pid1[i]. Or as
Daniel suggests in another mail, consider using unshare().
> }
>
> }
>
>
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