[libvirt] [PATCH v2] lxc: Refresh capabilities if they have never been initalized

[Cole Robinson]

Adjust virLXCDriverGetCapabilities to fill in driver->caps if it is
empty, regardless of the passed 'refresh' value. This matches the
pattern used in virQEMUDriverGetCapabilities

This fixes LXC XML startup parsing for me

Signed-off-by: Cole Robinson <crobinso at redhat.com>
---
v2:
    Use the virQEMUDriverGetCapabilities like danpb suggested

 src/lxc/lxc_conf.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/lxc/lxc_conf.c b/src/lxc/lxc_conf.c
index 2df1537b22..adf7a0b66c 100644
--- a/src/lxc/lxc_conf.c
+++ b/src/lxc/lxc_conf.c
@@ -196,6 +196,14 @@ virCapsPtr virLXCDriverGetCapabilities(virLXCDriverPtr driver,
         driver->caps = caps;
     } else {
         lxcDriverLock(driver);
+
+        if (driver->caps == NULL ||
+            driver->caps->nguests == 0) {
+            VIR_DEBUG("Capabilities didn't detect any guests. Forcing a "
+                      "refresh.");
+            lxcDriverUnlock(driver);
+            return virLXCDriverGetCapabilities(driver, true);
+        }
     }
 
     ret = virObjectRef(driver->caps);
-- 
2.23.0