parasite: the type of the communication socket must be SOCK_SEQPACKET

We use unix socket to communicate with parasite. Before we used
SOCK_STREAM, but it doesn't guaranty that the message boundaries will be
save.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

parasite-syscall.c

@@ -348,7 +348,7 @@ static int prepare_tsock(struct parasite_ctl *ctl, pid_t pid,
 				return -1;
 		}
 
-		ssock = socket(PF_UNIX, SOCK_STREAM, 0);
+		ssock = socket(PF_UNIX, SOCK_SEQPACKET, 0);
 		if (ssock < 0)
 			pr_perror("Can't create socket");
 

pie/parasite.c

@@ -499,7 +499,7 @@ static noinline __used int parasite_init_daemon(void *data)
 
 	sigframe = args->sigframe;
 
-	tsock = sys_socket(PF_UNIX, SOCK_STREAM, 0);
+	tsock = sys_socket(PF_UNIX, SOCK_SEQPACKET, 0);
 	if (tsock < 0) {
 		pr_err("Can't create socket: %d\n", tsock);
 		goto err;