[Qemu-devel] [PATCH RFC 7/7] net/filter: prevent the default filter to be deleted

[zhanghailiang]

Signed-off-by: zhanghailiang <address@hidden>
---
 net/filter.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/net/filter.c b/net/filter.c
index a126a3b..4aafff0 100644
--- a/net/filter.c
+++ b/net/filter.c
@@ -323,11 +323,19 @@ static void netfilter_finalize(Object *obj)
     g_free(nf->netdev_id);
 }
 
+static bool netfilter_can_be_deleted(UserCreatable *uc, Error **errp)
+{
+    NetFilterState *nf = NETFILTER(uc);
+    /* Forbid the default filter to be deleted */
+    return !nf->is_default;
+}
+
 static void netfilter_class_init(ObjectClass *oc, void *data)
 {
     UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
 
     ucc->complete = netfilter_complete;
+    ucc->can_be_deleted = netfilter_can_be_deleted;
 }
 
 static const TypeInfo netfilter_info = {
-- 
1.8.3.1