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authorPablo Neira Ayuso <pablo@netfilter.org>2021-02-20 16:18:03 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2021-03-02 11:08:49 +0100
commit6d085b22a8b5165406b5727ccf21a91ac5b97136 (patch)
tree6f343e53b5a6da34ee05a665b8bfd7c84605534f /src/netlink.c
parent4722cfeed34c2333989aa88d9e0b5e4ed89f3280 (diff)
table: support for the table owner flag
Add new flag to allow userspace process to own tables: Tables that have an owner can only be updated/destroyed by the owner. The table is destroyed either if the owner process calls nft_ctx_free() or owner process is terminated (implicit table release). The ruleset listing includes the program name that owns the table: nft> list ruleset table ip x { # progname nft flags owner chain y { type filter hook input priority filter; policy accept; counter packets 1 bytes 309 } } Original code to pretty print the netlink portID to program name has been extracted from the conntrack userspace utility. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/netlink.c')
-rw-r--r--src/netlink.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/netlink.c b/src/netlink.c
index c3887d5b..8c86789b 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -614,6 +614,7 @@ struct table *netlink_delinearize_table(struct netlink_ctx *ctx,
table->handle.table.name = xstrdup(nftnl_table_get_str(nlt, NFTNL_TABLE_NAME));
table->flags = nftnl_table_get_u32(nlt, NFTNL_TABLE_FLAGS);
table->handle.handle.id = nftnl_table_get_u64(nlt, NFTNL_TABLE_HANDLE);
+ table->owner = nftnl_table_get_u32(nlt, NFTNL_TABLE_OWNER);
if (nftnl_table_is_set(nlt, NFTNL_TABLE_USERDATA)) {
udata = nftnl_table_get_data(nlt, NFTNL_TABLE_USERDATA, &ulen);