security: Grab a reference to virSecurityManager for transactions

This shouldn't be needed per-se. Security manager shouldn't
disappear during transactions - it's immutable. However, it
doesn't hurt to grab a reference either - transaction code uses
it after all.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NMarc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

src/security/security_dac.c

@@ -141,6 +141,7 @@ virSecurityDACChownListFree(void *opaque)
         VIR_FREE(list->items[i]);
     }
     VIR_FREE(list->items);
+    virObjectUnref(list->manager);
     VIR_FREE(list);
 }
 
@@ -511,12 +512,12 @@ virSecurityDACTransactionStart(virSecurityManagerPtr mgr)
     if (VIR_ALLOC(list) < 0)
         return -1;
 
-    list->manager = mgr;
+    list->manager = virObjectRef(mgr);
 
     if (virThreadLocalSet(&chownList, list) < 0) {
         virReportSystemError(errno, "%s",
                              _("Unable to set thread local variable"));
-        VIR_FREE(list);
+        virSecurityDACChownListFree(list);
         return -1;
     }
 

src/security/security_selinux.c

@@ -157,6 +157,7 @@ virSecuritySELinuxContextListFree(void *opaque)
         virSecuritySELinuxContextItemFree(list->items[i]);
 
     VIR_FREE(list->items);
+    virObjectUnref(list->manager);
     VIR_FREE(list);
 }
 
@@ -1055,12 +1056,12 @@ virSecuritySELinuxTransactionStart(virSecurityManagerPtr mgr)
     if (VIR_ALLOC(list) < 0)
         return -1;
 
-    list->manager = mgr;
+    list->manager = virObjectRef(mgr);
 
     if (virThreadLocalSet(&contextList, list) < 0) {
         virReportSystemError(errno, "%s",
                              _("Unable to set thread local variable"));
-        VIR_FREE(list);
+        virSecuritySELinuxContextListFree(list);
         return -1;
     }