libnftables: Make some functions globally accessible

This removes static flag and adds header prototype for the following
functions:

* must_print_eq_op() from src/expression.c
* fib_result_str() from src/fib.c
* set_policy2str() and chain_policy2str from src/rule.c

In fib.h, include linux/netfilter/nf_tables.h to make sure enum
nft_fib_result is known when including this file.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

4 files changed, 9 insertions, 0 deletions

diff --git a/include/expression.h b/include/expression.h
index f0ba6fc1..23d6bd23 100644
--- a/include/expression.h
+++ b/include/expression.h
@@ -366,6 +366,8 @@ extern struct expr *unary_expr_alloc(const struct location *loc,
 extern struct expr *binop_expr_alloc(const struct location *loc, enum ops op,
 				     struct expr *left, struct expr *right);
 
+extern bool must_print_eq_op(const struct expr *expr);
+
 extern struct expr *relational_expr_alloc(const struct location *loc, enum ops op,
 					  struct expr *left, struct expr *right);
 
diff --git a/include/fib.h b/include/fib.h
index 9ce681cc..67edccfe 100644
--- a/include/fib.h
+++ b/include/fib.h
@@ -1,6 +1,9 @@
 #ifndef NFTABLES_FIB_H
 #define NFTABLES_FIB_H
 
+#include <linux/netfilter/nf_tables.h>
+
+extern const char *fib_result_str(enum nft_fib_result result);
 extern struct expr *fib_expr_alloc(const struct location *loc,
 				   unsigned int flags,
 				   unsigned int result);
diff --git a/include/rule.h b/include/rule.h
index 2c44ccea..cfecf7ff 100644
--- a/include/rule.h
+++ b/include/rule.h
@@ -204,6 +204,7 @@ extern struct chain *chain_lookup(const struct table *table,
 
 extern const char *family2str(unsigned int family);
 extern const char *hooknum2str(unsigned int family, unsigned int hooknum);
+extern const char *chain_policy2str(uint32_t policy);
 extern void chain_print_plain(const struct chain *chain,
 			      struct output_ctx *octx);
 
@@ -284,6 +285,7 @@ extern void set_add_hash(struct set *set, struct table *table);
 extern struct set *set_lookup(const struct table *table, const char *name);
 extern struct set *set_lookup_global(uint32_t family, const char *table,
 				     const char *name, struct nft_cache *cache);
+extern const char *set_policy2str(uint32_t policy);
 extern void set_print(const struct set *set, struct output_ctx *octx);
 extern void set_print_plain(const struct set *s, struct output_ctx *octx);
 
diff --git a/include/statement.h b/include/statement.h
index 5987b181..fc80dbd5 100644
--- a/include/statement.h
+++ b/include/statement.h
@@ -21,6 +21,7 @@ struct objref_stmt {
 	struct expr		*expr;
 };
 
+const char *objref_type_name(uint32_t type);
 struct stmt *objref_stmt_alloc(const struct location *loc);
 
 struct counter_stmt {
@@ -75,6 +76,7 @@ struct log_stmt {
 	uint32_t		flags;
 };
 
+extern const char *log_level(uint32_t level);
 extern struct stmt *log_stmt_alloc(const struct location *loc);