libxl: Export libxl__qmp_ev_qemu_compare_version

We are going to want to check QEMU's version in other places where we
can use libxl__ev_qmp_send.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Jason Andryuk <jandryuk@gmail.com>

diff --git a/tools/libs/light/libxl_internal.h b/tools/libs/light/libxl_internal.h
index 44a2f3c8fe3bfe9ae66863e559fa8038cbfb995b..0b4671318c82db779c369153dc2f3a844a901bb6 100644 (file)
--- a/tools/libs/light/libxl_internal.h
+++ b/tools/libs/light/libxl_internal.h
@@ -492,6 +492,14 @@ _hidden int libxl__ev_qmp_send(libxl__egc *egc, libxl__ev_qmp *ev,
                                const char *cmd, libxl__json_object *args);
 _hidden void libxl__ev_qmp_dispose(libxl__gc *gc, libxl__ev_qmp *ev);
 
+/* return values:
+ *   < 0  if qemu's version <  asked version
+ *   = 0  if qemu's version == asked version
+ *   > 0  if qemu's version >  asked version
+ */
+_hidden int libxl__qmp_ev_qemu_compare_version(libxl__ev_qmp *ev, int major,
+                                               int minor, int micro);
+
 typedef enum {
     /* initial state */
     qmp_state_disconnected = 1,

diff --git a/tools/libs/light/libxl_qmp.c b/tools/libs/light/libxl_qmp.c
index d0967c9f029f0d8ef5694a6b4477903d49f1320e..fb146a54cb9c9ee5185701bbea052e2a84c8d295 100644 (file)
--- a/tools/libs/light/libxl_qmp.c
+++ b/tools/libs/light/libxl_qmp.c
@@ -289,7 +289,7 @@ static int qmp_handle_response(libxl__gc *gc, libxl__qmp_handler *qmp,
  *   = 0  if qemu's version == asked version
  *   > 0  if qemu's version >  asked version
  */
-static int qmp_ev_qemu_compare_version(libxl__ev_qmp *ev, int major,
+int libxl__qmp_ev_qemu_compare_version(libxl__ev_qmp *ev, int major,
                                        int minor, int micro)
 {
     assert(ev->state == qmp_state_connected);
@@ -1073,7 +1073,7 @@ static void dm_state_save_to_fdset(libxl__egc *egc, libxl__ev_qmp *ev, int fdset
     /* The `live` parameter was added to QEMU 2.11. It signals QEMU that
      * the save operation is for a live migration rather than for taking a
      * snapshot. */
-    if (qmp_ev_qemu_compare_version(ev, 2, 11, 0) >= 0)
+    if (libxl__qmp_ev_qemu_compare_version(ev, 2, 11, 0) >= 0)
         libxl__qmp_param_add_bool(gc, &args, "live", dsps->live);
     QMP_PARAMETERS_SPRINTF(&args, "filename", "/dev/fdset/%d", fdset);
     rc = libxl__ev_qmp_send(egc, ev, "xen-save-devices-state", args);