qom: add new dynamic property infrastructure based on Visitors (v2)

qdev properties are settable only during construction and static to classes.
This isn't flexible enough for QOM.

This patch introduces a property interface for qdev that provides dynamic
properties that are tied to objects, instead of classes.  These properties are
Visitor based instead of string based too.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/qerror.c b/qerror.c
index 830c9c3ddf..adde8a5859 100644
--- a/qerror.c
+++ b/qerror.c
@@ -186,6 +186,10 @@ static const QErrorStringTable qerror_table[] = {
         .desc      = "Could not open '%(filename)'",
     },
     {
+        .error_fmt = QERR_PERMISSION_DENIED,
+        .desc      = "Insufficient permission to perform this operation",
+    },
+    {
         .error_fmt = QERR_PROPERTY_NOT_FOUND,
         .desc      = "Property '%(device).%(property)' not found",
     },