pie: Split parasite_daemon into pieces

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/pie/parasite.c

@@ -685,31 +685,11 @@ static int fini(void)
 	return -1;
 }
 
-static noinline __used int noinline parasite_daemon(void *args)
+static int parasite_daemon_cmd(int cmd, void *args)
 {
-	struct ctl_msg m;
-	int ret = -1;
-
-	pr_debug("Running daemon thread leader\n");
-
-	/* Reply we're alive */
-	if (__parasite_daemon_reply_ack(PARASITE_CMD_INIT_DAEMON, 0))
-		goto out;
-
-	ret = 0;
-
-	while (1) {
-		if (__parasite_daemon_wait_msg(&m))
-			break;
-
-		if (ret && m.cmd != PARASITE_CMD_FINI) {
-			pr_err("Command rejected\n");
-			continue;
-		}
+	int ret;
 
-		switch (m.cmd) {
-		case PARASITE_CMD_FINI:
-			goto out;
+	switch (cmd) {
 	case PARASITE_CMD_DUMPPAGES:
 		ret = dump_pages(args);
 		break;
@@ -750,11 +730,41 @@ static noinline __used int noinline parasite_daemon(void *args)
 		ret = parasite_dump_cgroup(args);
 		break;
 	default:
-			pr_err("Unknown command in parasite daemon thread leader: %d\n", m.cmd);
+		pr_err("Unknown command in parasite daemon thread leader: %d\n", cmd);
 		ret = -1;
 		break;
 	}
 
+	return ret;
+}
+
+static noinline __used int noinline parasite_daemon(void *args)
+{
+	struct ctl_msg m;
+	int ret = -1;
+
+	pr_debug("Running daemon thread leader\n");
+
+	/* Reply we're alive */
+	if (__parasite_daemon_reply_ack(PARASITE_CMD_INIT_DAEMON, 0))
+		goto out;
+
+	ret = 0;
+
+	while (1) {
+		if (__parasite_daemon_wait_msg(&m))
+			break;
+
+		if (ret && m.cmd != PARASITE_CMD_FINI) {
+			pr_err("Command rejected\n");
+			continue;
+		}
+
+		if (m.cmd == PARASITE_CMD_FINI)
+			goto out;
+
+		ret = parasite_daemon_cmd(m.cmd, args);
+
 		if (__parasite_daemon_reply_ack(m.cmd, ret))
 			break;