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authorPhil Sutter <phil@nwl.cc>2018-10-24 21:14:37 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2018-10-24 21:20:43 +0200
commitb849b0dfd9f3aecff5617bc60d5852ef36c3d494 (patch)
tree609019a341ba89449115d86465577495d1bbba32 /doc/libnftables-json.adoc
parent4e9c475680aff492c34845a958638c1a43906e07 (diff)
json: Work around segfault when encountering xt stmt
When trying to convert an xt stmt into JSON, print() callback was called. Though the code in src/xt.c does not respect output_fp, therefore buffer wasn't filled as expected making libjansson to puke: | # nft -j list ruleset | warning: stmt ops xt have no json callback | nft: json.c:169: stmt_print_json: Assertion `__out' failed. | Aborted (core dumped) Avoid this by detecting xt stmt ops and returning a stub. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'doc/libnftables-json.adoc')
-rw-r--r--doc/libnftables-json.adoc7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/libnftables-json.adoc b/doc/libnftables-json.adoc
index ea5fbe81..414702c7 100644
--- a/doc/libnftables-json.adoc
+++ b/doc/libnftables-json.adoc
@@ -998,6 +998,13 @@ Assign connection tracking timeout policy.
*ct timeout*::
CT timeout reference.
+=== XT
+[verse]
+*{ "xt": null }*
+
+This represents an xt statement from xtables compat interface. Sadly, at this
+point it is not possible to provide any further information about its content.
+
== EXPRESSIONS
Expressions are the building blocks of (most) statements. In their most basic
form, they are just immediate values represented as JSON string, integer or