diff options
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/genetlink.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 23cc12639ba7..01291b7a27bb 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -1096,6 +1096,25 @@ problem: subsys_initcall(genl_init); +/** + * genl_family_attrbuf - return family's attrbuf + * @family: the family + * + * Return the family's attrbuf, while validating that it's + * actually valid to access it. + * + * You cannot use this function with a family that has parallel_ops + * and you can only use it within (pre/post) doit/dumpit callbacks. + */ +struct nlattr **genl_family_attrbuf(struct genl_family *family) +{ + if (!WARN_ON(family->parallel_ops)) + lockdep_assert_held(&genl_mutex); + + return family->attrbuf; +} +EXPORT_SYMBOL(genl_family_attrbuf); + static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group, gfp_t flags) { |