X-Git-Url: http://git.archive.openwrt.org/?p=project%2Flibubox.git;a=blobdiff_plain;f=blobmsg.h;h=4619643e27d6c97b19878d3cfcaee65fef4e68fa;hp=3eeec9b035ea63aca99b2a7f9e609d7b9d6df958;hb=e8b26ce48d9a423507d2cb6b98094fe5adb1ed9c;hpb=af2f52a37bdbb34835da08b518a5f5a950d87a77

diff --git a/blobmsg.h b/blobmsg.h
index 3eeec9b..4619643 100644
--- a/blobmsg.h
+++ b/blobmsg.h
@@ -78,6 +78,11 @@ static inline int blobmsg_data_len(const struct blob_attr *attr)
 	return blob_len(attr) - (end - start);
 }
 
+static inline int blobmsg_len(const struct blob_attr *attr)
+{
+	return blobmsg_data_len(attr);
+}
+
 bool blobmsg_check_attr(const struct blob_attr *attr, bool name);
 bool blobmsg_check_attr_list(const struct blob_attr *attr, int type);
 int blobmsg_parse(const struct blobmsg_policy *policy, int policy_len,
@@ -204,9 +209,10 @@ void blobmsg_printf(struct blob_buf *buf, const char *name, const char *format,
 /* blobmsg to json formatting */
 
 #define blobmsg_for_each_attr(pos, attr, rem) \
-	for (rem = blobmsg_data_len(attr), pos = blobmsg_data(attr); \
-		 rem > 0 && (blob_pad_len(pos) <= rem) && \
-		 (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
-		 rem -= blob_pad_len(pos), pos = blob_next(pos))
+	for (rem = attr ? blobmsg_data_len(attr) : 0, \
+	     pos = attr ? blobmsg_data(attr) : 0; \
+	     rem > 0 && (blob_pad_len(pos) <= rem) && \
+	     (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
+	     rem -= blob_pad_len(pos), pos = blob_next(pos))
 
 #endif