tools/helpers: make gen_stub_json_config accept an UUID argument

If that's set, the stub is going to contain that UUID.

No functional change.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

tools/helpers/init-dom-json.c

@@ -7,7 +7,7 @@
 #include <xenctrl.h>
 #include <libxl.h>
 
-int gen_stub_json_config(uint32_t domid)
+int gen_stub_json_config(uint32_t domid, libxl_uuid *uuid)
 {
     int rc = 1;
     xentoollog_logger_stdiostream *logger;
@@ -40,6 +40,9 @@ int gen_stub_json_config(uint32_t domid)
     libxl_domain_build_info_init_type(&dom_config.b_info,
                                       dom_config.c_info.type);
 
+    if (uuid && !libxl_uuid_is_nil(uuid))
+        libxl_uuid_copy(ctx, &dom_config.c_info.uuid, uuid);
+
     json = libxl_domain_config_to_json(ctx, &dom_config);
     /* libxl-json format requires the string ends with '\0'. Code
      * snippet taken from libxl.

tools/helpers/init-dom-json.h

@@ -1,10 +1,11 @@
 #ifndef __INIT_DOM_JSON_H
 #define __INIT_DOM_JSON_H
 
+#include <libxl.h>
 /*
  * Generate a stub JSON config for a domain with the given domid.
  */
-int gen_stub_json_config(uint32_t domid);
+int gen_stub_json_config(uint32_t domid, libxl_uuid *uuid);
 
 #endif
 /*

tools/helpers/init-xenstore-domain.c

@@ -382,7 +382,7 @@ int main(int argc, char** argv)
     if ( rv )
         return 1;
 
-    rv = gen_stub_json_config(domid);
+    rv = gen_stub_json_config(domid, NULL);
     if ( rv )
         return 3;
 

tools/helpers/xen-init-dom0.c

@@ -31,7 +31,7 @@ int main(int argc, char **argv)
         goto out;
     }
 
-    rc = gen_stub_json_config(0);
+    rc = gen_stub_json_config(0, NULL);
     if (rc)
         goto out;