[libvirt] [PATCH] Fix up connection reference counting.

[Chris Lalancette]

Currently the reference counting for connections is busted.  I
first noticed it while trying to use virConnectRef; it would
eventually cause a crash in the remote_internal driver, although
that was really just a victim.  Really, we should only call the
close callbacks on the methods when the references drop to 0.  To
accomplish this, move all of the close callbacks into
virUnrefConnect (since there are lots of internal users of that
function), and arrange for virConnectClose to call that.

Signed-off-by: Chris Lalancette <clalance at redhat.com>
---
 src/datatypes.c |   10 ++++++++++
 src/libvirt.c   |   14 +-------------
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/src/datatypes.c b/src/datatypes.c
index 9d556c8..83260c1 100644
--- a/src/datatypes.c
+++ b/src/datatypes.c
@@ -237,6 +237,16 @@ virUnrefConnect(virConnectPtr conn)
     conn->refs--;
     refs = conn->refs;
     if (refs == 0) {
+        if (conn->networkDriver)
+            conn->networkDriver->close (conn);
+        if (conn->interfaceDriver)
+            conn->interfaceDriver->close (conn);
+        if (conn->storageDriver)
+            conn->storageDriver->close (conn);
+        if (conn->deviceMonitor)
+            conn->deviceMonitor->close (conn);
+        conn->driver->close (conn);
+
         virReleaseConnect(conn);
         /* Already unlocked mutex */
         return (0);
diff --git a/src/libvirt.c b/src/libvirt.c
index 5aa7f83..472c19b 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -1231,19 +1231,7 @@ virConnectClose(virConnectPtr conn)
         return (-1);
     }
 
-    if (conn->networkDriver)
-        conn->networkDriver->close (conn);
-    if (conn->interfaceDriver)
-        conn->interfaceDriver->close (conn);
-    if (conn->storageDriver)
-        conn->storageDriver->close (conn);
-    if (conn->deviceMonitor)
-        conn->deviceMonitor->close (conn);
-    conn->driver->close (conn);
-
-    if (virUnrefConnect(conn) < 0)
-        return (-1);
-    return (0);
+    return virUnrefConnect(conn);
 }
 
 /**
-- 
1.6.0.6