blobmsg: add blobmsg_check_array, which returns the size of the array

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/blobmsg.h b/blobmsg.h
index d8f1045..082980a 100644
--- a/blobmsg.h
+++ b/blobmsg.h
@@ -90,6 +90,15 @@ static inline int blobmsg_len(const struct blob_attr *attr)
 
 bool blobmsg_check_attr(const struct blob_attr *attr, bool name);
 bool blobmsg_check_attr_list(const struct blob_attr *attr, int type);
+
+/*
+ * blobmsg_check_array: validate array/table and return size
+ *
+ * Checks if all elements of an array or table are valid and have
+ * the specified type. Returns the number of elements in the array
+ */
+int blobmsg_check_array(const struct blob_attr *attr, int type);
+
 int blobmsg_parse(const struct blobmsg_policy *policy, int policy_len,
                   struct blob_attr **tb, void *data, unsigned int len);
 int blobmsg_parse_array(const struct blobmsg_policy *policy, int policy_len,