void *blobmsg_alloc_string_buffer(struct blob_buf *buf, const char *name, int maxlen);
void blobmsg_add_string_buffer(struct blob_buf *buf);
void *blobmsg_alloc_string_buffer(struct blob_buf *buf, const char *name, int maxlen);
void blobmsg_add_string_buffer(struct blob_buf *buf);