diff options
| -rw-r--r-- | src/attr.c | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -74,6 +74,9 @@ void *mnl_attr_get_data(const struct nlattr *attr) * has enough room for the attribute that it stores, ie. this function can * be used to verify that an attribute is neither malformed nor truncated. * + * This function does not set errno in case of error since it is intended + * for iterations. Thus, it returns 1 on success and 0 on error. + * * The @len parameter may become negative in malformed messages during * attribute iteration, that is why we use a signed integer. */ @@ -90,7 +93,8 @@ int mnl_attr_ok(const struct nlattr *attr, int len) * @len: pointer to the current remaining bytes in the buffer * * This function returns a pointer to the next attribute that is in the - * payload of a netlink message. + * payload of a netlink message. You have to use mnl_attr_ok() to ensure that + * the next attribute is valid. */ struct nlattr *mnl_attr_next(const struct nlattr *attr, int *len) { |