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-rw-r--r--net/ipv4/netfilter/ipt_ULOG.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index d26bbd2daaa..a2bcba70af5 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -349,12 +349,52 @@ static int ipt_ulog_checkentry(const char *tablename,
return 1;
}
+#ifdef CONFIG_COMPAT
+struct compat_ipt_ulog_info {
+ compat_uint_t nl_group;
+ compat_size_t copy_range;
+ compat_size_t qthreshold;
+ char prefix[ULOG_PREFIX_LEN];
+};
+
+static void compat_from_user(void *dst, void *src)
+{
+ struct compat_ipt_ulog_info *cl = src;
+ struct ipt_ulog_info l = {
+ .nl_group = cl->nl_group,
+ .copy_range = cl->copy_range,
+ .qthreshold = cl->qthreshold,
+ };
+
+ memcpy(l.prefix, cl->prefix, sizeof(l.prefix));
+ memcpy(dst, &l, sizeof(l));
+}
+
+static int compat_to_user(void __user *dst, void *src)
+{
+ struct ipt_ulog_info *l = src;
+ struct compat_ipt_ulog_info cl = {
+ .nl_group = l->nl_group,
+ .copy_range = l->copy_range,
+ .qthreshold = l->qthreshold,
+ };
+
+ memcpy(cl.prefix, l->prefix, sizeof(cl.prefix));
+ return copy_to_user(dst, &cl, sizeof(cl)) ? -EFAULT : 0;
+}
+#endif /* CONFIG_COMPAT */
+
static struct xt_target ipt_ulog_reg = {
.name = "ULOG",
.family = AF_INET,
.target = ipt_ulog_target,
.targetsize = sizeof(struct ipt_ulog_info),
.checkentry = ipt_ulog_checkentry,
+#ifdef CONFIG_COMPAT
+ .compatsize = sizeof(struct compat_ipt_ulog_info),
+ .compat_from_user = compat_from_user,
+ .compat_to_user = compat_to_user,
+#endif
.me = THIS_MODULE,
};