diff options
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netlink.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h index 9522a0bf1f3a..f1db8e594847 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -373,6 +373,9 @@ int nla_validate(const struct nlattr *head, int len, int maxtype, int nla_parse(struct nlattr **tb, int maxtype, const struct nlattr *head, int len, const struct nla_policy *policy, struct netlink_ext_ack *extack); +int nla_parse_strict(struct nlattr **tb, int maxtype, const struct nlattr *head, + int len, const struct nla_policy *policy, + struct netlink_ext_ack *extack); int nla_policy_len(const struct nla_policy *, int); struct nlattr *nla_find(const struct nlattr *head, int len, int attrtype); size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize); @@ -525,6 +528,20 @@ static inline int nlmsg_parse(const struct nlmsghdr *nlh, int hdrlen, nlmsg_attrlen(nlh, hdrlen), policy, extack); } +static inline int nlmsg_parse_strict(const struct nlmsghdr *nlh, int hdrlen, + struct nlattr *tb[], int maxtype, + const struct nla_policy *policy, + struct netlink_ext_ack *extack) +{ + if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) { + NL_SET_ERR_MSG(extack, "Invalid header length"); + return -EINVAL; + } + + return nla_parse_strict(tb, maxtype, nlmsg_attrdata(nlh, hdrlen), + nlmsg_attrlen(nlh, hdrlen), policy, extack); +} + /** * nlmsg_find_attr - find a specific attribute in a netlink message * @nlh: netlink message header |