Create Jail fail by c language

[Dirk Engling]

On 18.04.15 17:34, freekai wrote:

>  18     j.ip4s=inet_addr(cp);

>From the man page:

> The “ip4s” and “ip6s” give the numbers of IPv4 and IPv6 addresses
> that will be passed via their respective pointers.

so it should rather read:

>  18     j.ip4s=1;
>  19     j.ip6s=0;
>  20 
>  21     if(1!=inet_aton(cp,&ip4))
>  22         printf("the address is invalid\r\n");
>  23 
>  24     j.ip4=&ip4;

>  The problem is it will print `einval`,it means `The version number of the argument is not correct.`
>  How to solve it?

Also, the man pages states several other reasons for the EINVAL return
code (scroll further down), one of them being

[EINVAL]           A supplied parameter is the wrong size.

Regards

  erdgeist