inet: dump actual states of tcp sockets

We get sockets from task_diag, then we block network and dump sockets.

A socket state can be changed between first two steps, so lets get
a socket state on the third step and dump it.

travis-ci: success for series starting with [01/21] build: install libnet-dev
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/sk-inet.c

@@ -304,7 +304,6 @@ static int do_dump_one_inet_fd(int lfd, u32 id, const struct fd_parms *p, int fa
 	ie.family	= family;
 	ie.proto	= proto;
 	ie.type		= sk->type;
-	ie.state	= sk->state;
 	ie.src_port	= sk->src_port;
 	ie.dst_port	= sk->dst_port;
 	ie.backlog	= sk->wqlen;
@@ -365,9 +364,6 @@ static int do_dump_one_inet_fd(int lfd, u32 id, const struct fd_parms *p, int fa
 	if (dump_socket_opts(lfd, &skopts))
 		goto err;
 
-	if (pb_write_one(img_from_set(glob_imgset, CR_FD_INETSK), &ie, PB_INET_SK))
-		goto err;
-
 	pr_info("Dumping inet socket at %d\n", p->fd);
 	show_one_inet("Dumping", sk);
 	show_one_inet_img("Dumped", &ie);
@@ -382,6 +378,11 @@ static int do_dump_one_inet_fd(int lfd, u32 id, const struct fd_parms *p, int fa
 		err = 0;
 		break;
 	}
+
+	ie.state = sk->state;
+
+	if (pb_write_one(img_from_set(glob_imgset, CR_FD_INETSK), &ie, PB_INET_SK))
+		goto err;
 err:
 	release_skopts(&skopts);
 	xfree(ie.src_addr);

criu/sk-tcp.c

@@ -132,6 +132,8 @@ static int dump_tcp_conn_state(struct inet_sk_desc *sk)
 		goto err_r;
 	}
 
+	sk->state = data.state;
+
 	tse.inq_len = data.inq_len;
 	tse.inq_seq = data.inq_seq;
 	tse.outq_len = data.outq_len;