diff options
| author | David S. Miller <davem@davemloft.net> | 2012-05-10 10:44:03 +0200 |
|---|---|---|
| committer | Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> | 2012-05-10 10:44:03 +0200 |
| commit | 1a3d302abd9ac4eae735a843eecb1e0fb028d722 (patch) | |
| tree | f00e9edbd8b5df276c030ee1ba35c5640ac1e36e /kernel/net/netfilter/ipset/ip_set_list_set.c | |
| parent | 633aaaf0f30a6eb8d59eb066d3e9e9e92bce4fd1 (diff) | |
ipset: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/net/netfilter/ipset/ip_set_list_set.c')
| -rw-r--r-- | kernel/net/netfilter/ipset/ip_set_list_set.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/kernel/net/netfilter/ipset/ip_set_list_set.c b/kernel/net/netfilter/ipset/ip_set_list_set.c index 7e095f9..6cb1225 100644 --- a/kernel/net/netfilter/ipset/ip_set_list_set.c +++ b/kernel/net/netfilter/ipset/ip_set_list_set.c @@ -402,12 +402,13 @@ list_set_head(struct ip_set *set, struct sk_buff *skb) nested = ipset_nest_start(skb, IPSET_ATTR_DATA); if (!nested) goto nla_put_failure; - NLA_PUT_NET32(skb, IPSET_ATTR_SIZE, htonl(map->size)); - if (with_timeout(map->timeout)) - NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout)); - NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)); - NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, - htonl(sizeof(*map) + map->size * map->dsize)); + if (nla_put_net32(skb, IPSET_ATTR_SIZE, htonl(map->size)) || + (with_timeout(map->timeout) && + nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout))) || + nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)) || + nla_put_net32(skb, IPSET_ATTR_MEMSIZE, + htonl(sizeof(*map) + map->size * map->dsize))) + goto nla_put_failure; ipset_nest_end(skb, nested); return 0; @@ -442,13 +443,15 @@ list_set_list(const struct ip_set *set, } else goto nla_put_failure; } - NLA_PUT_STRING(skb, IPSET_ATTR_NAME, - ip_set_name_byindex(e->id)); + if (nla_put_string(skb, IPSET_ATTR_NAME, + ip_set_name_byindex(e->id))) + goto nla_put_failure; if (with_timeout(map->timeout)) { const struct set_telem *te = (const struct set_telem *) e; - NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, - htonl(ip_set_timeout_get(te->timeout))); + __be32 to = htonl(ip_set_timeout_get(te->timeout)); + if (nla_put_net32(skb, IPSET_ATTR_TIMEOUT, to)) + goto nla_put_failure; } ipset_nest_end(skb, nested); } |