[Libguestfs] [PATCH 1/2] launch: libvirt: Store libvirt version number in the backend data.

[Richard W.M. Jones]

This lets us generate XML conditionally based on libvirt version.
---
 src/launch-libvirt.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/launch-libvirt.c b/src/launch-libvirt.c
index e4563f8..7653bf9 100644
--- a/src/launch-libvirt.c
+++ b/src/launch-libvirt.c
@@ -100,6 +100,7 @@ xmlBufferDetach (xmlBufferPtr buf)
 
 /* Per-handle data. */
 struct backend_libvirt_data {
+  unsigned long version;        /* libvirt version */
   virConnectPtr conn;           /* libvirt connection */
   virDomainPtr dom;             /* libvirt domain */
   char *selinux_label;
@@ -208,7 +209,6 @@ launch_libvirt (guestfs_h *g, void *datav, const char *libvirt_uri)
 {
   struct backend_libvirt_data *data = datav;
   int daemon_accept_sock = -1, console_sock = -1;
-  unsigned long version;
   virConnectPtr conn = NULL;
   virDomainPtr dom = NULL;
   CLEANUP_FREE char *capabilities_xml = NULL;
@@ -234,11 +234,13 @@ launch_libvirt (guestfs_h *g, void *datav, const char *libvirt_uri)
     return -1;
   }
 
-  virGetVersion (&version, NULL, NULL);
+  virGetVersion (&data->version, NULL, NULL);
   debug (g, "libvirt version = %lu (%lu.%lu.%lu)",
-         version,
-         version / 1000000UL, version / 1000UL % 1000UL, version % 1000UL);
-  if (version < MIN_LIBVIRT_VERSION) {
+         data->version,
+         data->version / 1000000UL,
+         data->version / 1000UL % 1000UL,
+         data->version % 1000UL);
+  if (data->version < MIN_LIBVIRT_VERSION) {
     error (g, _("you must have libvirt >= %d.%d.%d "
                 "to use the 'libvirt' backend"),
            MIN_LIBVIRT_MAJOR, MIN_LIBVIRT_MINOR, MIN_LIBVIRT_MICRO);
-- 
1.8.5.3