state: use packed attribute for on storage structs

These structs are used for on-storage data layouts. They should be not
affected by different integer precisions and alignment optimizations of
32bit or 64bit machines. Using the architecture independent integer data
types, like uint32_t, achieves the former, using the packed attribute
the later.

Signed-off-by: Stefan Lengfeld <s.lengfeld@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/common/state/backend_bucket_direct.c b/common/state/backend_bucket_direct.c
index 08892f001e..5225433ec5 100644
--- a/common/state/backend_bucket_direct.c
+++ b/common/state/backend_bucket_direct.c
@@ -32,7 +32,7 @@ struct state_backend_storage_bucket_direct {
 	struct device_d *dev;
 };
 
-struct state_backend_storage_bucket_direct_meta {
+struct __attribute__((__packed__)) state_backend_storage_bucket_direct_meta {
 	uint32_t magic;
 	uint32_t written_length;
 };