Improve logging of shutdown inhibitor

The log category for virnetdaemon.c was mistakenly set
to rpc.netserver. Some useful info about the inhibitor
file descriptor was also never logged.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

src/rpc/virnetdaemon.c

@@ -47,7 +47,7 @@
 
 #define VIR_FROM_THIS VIR_FROM_RPC
 
-VIR_LOG_INIT("rpc.netserver");
+VIR_LOG_INIT("rpc.netdaemon");
 
 typedef struct _virNetDaemonSignal virNetDaemonSignal;
 typedef virNetDaemonSignal *virNetDaemonSignalPtr;
@@ -460,8 +460,10 @@ virNetDaemonGotInhibitReply(DBusPendingCall *pending,
                               DBUS_TYPE_INVALID)) {
         if (dmn->autoShutdownInhibitions) {
             dmn->autoShutdownInhibitFd = fd;
+            VIR_DEBUG("Got inhibit FD %d", fd);
         } else {
             /* We stopped the last VM since we made the inhibit call */
+            VIR_DEBUG("Closing inhibit FD %d", fd);
             VIR_FORCE_CLOSE(fd);
         }
     }
@@ -550,8 +552,10 @@ virNetDaemonRemoveShutdownInhibition(virNetDaemonPtr dmn)
 
     VIR_DEBUG("dmn=%p inhibitions=%zu", dmn, dmn->autoShutdownInhibitions);
 
-    if (dmn->autoShutdownInhibitions == 0)
+    if (dmn->autoShutdownInhibitions == 0) {
+        VIR_DEBUG("Closing inhibit FD %d", dmn->autoShutdownInhibitFd);
         VIR_FORCE_CLOSE(dmn->autoShutdownInhibitFd);
+    }
 
     virObjectUnlock(dmn);
 }