[CRIU] [PATCH v3] net: Add ip rule save/restore

[Pavel Emelyanov]

> @@ -657,6 +678,32 @@ static inline int restore_route(int pid)
>  	return 0;
>  }
>  
> +static inline int restore_rule(int pid)
> +{
> +	struct cr_img *img;
> +	int ret = 0;
> +
> +	img = open_image(CR_FD_RULE, O_RSTR, pid);
> +	if (!img)

Presumably in this case we should report -1.

> +		goto out;
> +	if (empty_image(img))
> +		goto close;
> +	/*
> +	 * Delete 3 default rules to prevent duplicates. See kernel's
> +	 * function fib_default_rules_init() for the details.
> +	 */
> +	run_ip_tool("rule", "delete", NULL, -1, -1);
> +	run_ip_tool("rule", "delete", NULL, -1, -1);
> +	run_ip_tool("rule", "delete", NULL, -1, -1);
> +
> +	if (restore_ip_dump(CR_FD_RULE, pid, "rule"))
> +		ret = -1;
> +close:
> +	close_image(img);
> +out:
> +	return ret;
> +}
> +