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Re: [Qemu-devel] [PATCH v4 1/2] qom: Detect attempts to add a property t
From: |
Anthony Liguori |
Subject: |
Re: [Qemu-devel] [PATCH v4 1/2] qom: Detect attempts to add a property that already exists |
Date: |
Thu, 25 Oct 2012 13:39:04 -0500 |
User-agent: |
Notmuch/0.13.2+93~ged93d79 (http://notmuchmail.org) Emacs/23.3.1 (x86_64-pc-linux-gnu) |
Peter Maydell <address@hidden> writes:
> Detect attempts to add a property to an object if one of
> that name already exists, and report them as critical
> errors. In particular, for static properties (eg qdev
> Property arrays) this will manifest as an abort() with
> a useful error message.
>
> Signed-off-by: Peter Maydell <address@hidden>
Reviewed-by: Anthony Liguori <address@hidden>
Regards,
Anthony Liguori
> ---
> qom/object.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/qom/object.c b/qom/object.c
> index e3e9242..a9dfc8c 100644
> --- a/qom/object.c
> +++ b/qom/object.c
> @@ -620,7 +620,18 @@ void object_property_add(Object *obj, const char *name,
> const char *type,
> ObjectPropertyRelease *release,
> void *opaque, Error **errp)
> {
> - ObjectProperty *prop = g_malloc0(sizeof(*prop));
> + ObjectProperty *prop;
> +
> + QTAILQ_FOREACH(prop, &obj->properties, node) {
> + if (strcmp(prop->name, name) == 0) {
> + error_setg(errp, "attempt to add duplicate property '%s'"
> + " to object (type '%s')\n", name,
> + object_get_typename(obj));
> + return;
> + }
> + }
> +
> + prop = g_malloc0(sizeof(*prop));
>
> prop->name = g_strdup(name);
> prop->type = g_strdup(type);
> --
> 1.7.9.5