diff options
| author | Jacek Tomasiak <jacek.tomasiak@gmail.com> | 2023-06-19 13:46:36 +0200 |
|---|---|---|
| committer | Phil Sutter <phil@nwl.cc> | 2023-06-21 13:47:17 +0200 |
| commit | 82ccfb488eeac5507471099b9b4e6d136cc06e3b (patch) | |
| tree | 2f5de8053a9dce851231c0e1e223c83611df7d72 /iptables/nft.c | |
| parent | ed839159edf8bda8e9196f1056c4038c22d78bfd (diff) | |
iptables: Fix handling of non-existent chains
Since 694612adf87 the "compatibility" check considers non-existent
chains as "incompatible". This broke some scripts which used calls
like `iptables -L CHAIN404` to test for chain existence and expect
"No chain/target/match by that name." in the output.
This patch changes the logic of `nft_is_table_compatible()` to
report non-existent chains as "compatible" which restores the old
behavior.
Fixes: 694612adf87 ("nft: Fix selective chain compatibility checks")
Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1648
Signed-off-by: Jacek Tomasiak <jtomasiak@arista.com>
Signed-off-by: Jacek Tomasiak <jacek.tomasiak@gmail.com>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Diffstat (limited to 'iptables/nft.c')
| -rw-r--r-- | iptables/nft.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/iptables/nft.c b/iptables/nft.c index 1cb104e7..020553a4 100644 --- a/iptables/nft.c +++ b/iptables/nft.c @@ -3860,7 +3860,7 @@ bool nft_is_table_compatible(struct nft_handle *h, if (chain) { struct nft_chain *c = nft_chain_find(h, table, chain); - return c && !nft_is_chain_compatible(c, h); + return !c || !nft_is_chain_compatible(c, h); } return !nft_chain_foreach(h, table, nft_is_chain_compatible, h); |