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authorWillem de Bruijn <willemb@google.com>2017-01-02 17:19:46 -0500
committerPablo Neira Ayuso <pablo@netfilter.org>2017-01-09 17:24:55 +0100
commitec23189049651b16dc2ffab35a4371dc1f491aca (patch)
treeabf3c783fb73b147f463fa686715a08fd2a969c1 /net/netfilter/xt_limit.c
parent4915f7bbc402071539ec0cb8c75aad878c982402 (diff)
xtables: extend matches and targets with .usersize
In matches and targets that define a kernel-only tail to their xt_match and xt_target data structs, add a field .usersize that specifies up to where data is to be shared with userspace. Performed a search for comment "Used internally by the kernel" to find relevant matches and targets. Manually inspected the structs to derive a valid offsetof. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/xt_limit.c')
-rw-r--r--net/netfilter/xt_limit.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/netfilter/xt_limit.c b/net/netfilter/xt_limit.c
index bef850596558..dab962df1787 100644
--- a/net/netfilter/xt_limit.c
+++ b/net/netfilter/xt_limit.c
@@ -192,6 +192,8 @@ static struct xt_match limit_mt_reg __read_mostly = {
.compatsize = sizeof(struct compat_xt_rateinfo),
.compat_from_user = limit_mt_compat_from_user,
.compat_to_user = limit_mt_compat_to_user,
+#else
+ .usersize = offsetof(struct xt_rateinfo, prev),
#endif
.me = THIS_MODULE,
};