Add translation for cgroup to nft. Path parameter not supported in nft
yet.
Examples:
$ sudo iptables-translate -t filter -A INPUT -m cgroup --cgroup 0 -j ACCEPT
nft add rule ip filter INPUT meta cgroup 0 counter accept
$ sudo iptables-translate -t filter -A INPUT -m cgroup ! --cgroup 0 -j ACCEPT
nft add rule ip filter INPUT meta cgroup != 0 counter accept
Signed-off-by: Laura Garcia Liebana <nevola@xxxxxxxxx>
---
extensions/libxt_cgroup.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/extensions/libxt_cgroup.c b/extensions/libxt_cgroup.c
index 3be42ad..1191815 100644
--- a/extensions/libxt_cgroup.c
+++ b/extensions/libxt_cgroup.c
@@ -121,6 +121,32 @@ static void cgroup_save_v1(const void *ip, const struct xt_entry_match *match)
info->classid);
}
+static int cgroup_xlate_v0(const void *ip, const struct xt_entry_match *match,
+ struct xt_xlate *xl, int numeric)
+{
+ const struct xt_cgroup_info_v0 *info = (void *)match->data;
+
+ xt_xlate_add(xl, "meta cgroup %s%u ", info->invert ? "!= " : "",
+ info->id);
+ return 1;
+}
+
+static int cgroup_xlate_v1(const void *ip, const struct xt_entry_match *match,
+ struct xt_xlate *xl, int numeric)
+{
+ const struct xt_cgroup_info_v1 *info = (void *)match->data;
+
+ if (info->has_path)
+ return 0;
+
+ if (info->has_classid)
+ xt_xlate_add(xl, "meta cgroup %s%u ",
+ info->invert_classid ? "!= " : "",
+ info->classid);
+
+ return 1;
+}
+
static struct xtables_match cgroup_match[] = {
{
.family = NFPROTO_UNSPEC,
@@ -134,6 +160,7 @@ static struct xtables_match cgroup_match[] = {
.save = cgroup_save_v0,
.x6_parse = cgroup_parse_v0,
.x6_options = cgroup_opts_v0,
+ .xlate = cgroup_xlate_v0,
},
{
.family = NFPROTO_UNSPEC,
@@ -147,6 +174,7 @@ static struct xtables_match cgroup_match[] = {
.save = cgroup_save_v1,
.x6_parse = cgroup_parse_v1,
.x6_options = cgroup_opts_v1,
+ .xlate = cgroup_xlate_v1,
},
};
--
2.7.0
--
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