dmabuf: Don't crash clients by sending version inappropriate events
We need to make sure the client bound dmabuf with a high enough
version to receive modifier events before sending them or the
client will crash.
Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
diff --git a/libweston/linux-dmabuf.c b/libweston/linux-dmabuf.c
index ac219ac..d81b63d 100644
--- a/libweston/linux-dmabuf.c
+++ b/libweston/linux-dmabuf.c
@@ -483,6 +483,8 @@
wl_resource_set_implementation(resource, &linux_dmabuf_implementation,
compositor, NULL);
+ if (version < ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION)
+ return;
/*
* Use EGL_EXT_image_dma_buf_import_modifiers to query and advertise
* format/modifier codes.