add version API

Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>

src/hyper.h

@@ -14,8 +14,10 @@
 #include "container.h"
 #include "portmapping.h"
 
+#define APIVERSION 4242
+
 enum {
-	RESERVED,
+	GETVERSION,
 	STARTPOD,
 	GETPOD,
 	STOPPOD,

src/init.c

@@ -1059,6 +1059,11 @@ static int hyper_channel_handle(struct hyper_event *de, uint32_t len)
 
 	pod->type = type;
 	switch (type) {
+	case GETVERSION:
+		data = malloc(4);
+		datalen = 4;
+		hyper_set_be32(data, APIVERSION);
+		break;
 	case STARTPOD:
 		ret = hyper_start_pod((char *)buf->data + 8, len - 8);
 		hyper_print_uptime();