initial version of libnftables

It adds support for table, chain and rule handling.

This also includes expression handling for each rule.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/internal.h b/src/internal.h
new file mode 100644
index 0000000..5ba7c76
--- /dev/null
+++ b/src/internal.h
@@ -0,0 +1,32 @@
+#ifndef INTERNAL_H
+#define INTERNAL_H 1
+
+#include "config.h"
+#ifdef HAVE_VISIBILITY_HIDDEN
+#	define __visible	__attribute__((visibility("default")))
+#	define EXPORT_SYMBOL(x)	typeof(x) (x) __visible
+#else
+#	define EXPORT_SYMBOL
+#endif
+
+#include "linux_list.h"
+
+#include <stdint.h>
+
+struct expr_ops;
+
+struct nft_rule_expr {
+	struct list_head head;
+	uint32_t	flags;
+	struct expr_ops	*ops;
+	uint8_t		data[];
+};
+
+#define SNPRINTF_BUFFER_SIZE(ret, size, len, offset)	\
+	size += ret;					\
+	if (ret > len)					\
+		ret = len;				\
+	offset += ret;					\
+	len -= ret;
+
+#endif