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>

8 files changed, 15 insertions, 6 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);
 
 
diff --git a/src/expression.c b/src/expression.c
index c3b6fb22..3c5ea0ff 100644
--- a/src/expression.c
+++ b/src/expression.c
@@ -558,7 +558,7 @@ static void binop_arg_print(const struct expr *op, const struct expr *arg,
 		nft_print(octx, ")");
 }
 
-static bool must_print_eq_op(const struct expr *expr)
+bool must_print_eq_op(const struct expr *expr)
 {
 	return expr->left->ops->type == EXPR_BINOP;
 }
diff --git a/src/fib.c b/src/fib.c
index 21bc69a9..069411f0 100644
--- a/src/fib.c
+++ b/src/fib.c
@@ -52,7 +52,7 @@ const struct datatype fib_addr_type = {
 	.sym_tbl	= &addrtype_tbl,
 };
 
-static const char *fib_result_str(enum nft_fib_result result)
+const char *fib_result_str(enum nft_fib_result result)
 {
 	if (result <= NFT_FIB_RESULT_MAX)
 		return fib_result[result];
diff --git a/src/rule.c b/src/rule.c
index 5f73bebc..a3ed5179 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -295,7 +295,7 @@ struct print_fmt_options {
 	const char	*stmt_separator;
 };
 
-static const char *set_policy2str(uint32_t policy)
+const char *set_policy2str(uint32_t policy)
 {
 	switch (policy) {
 	case NFT_SET_POL_PERFORMANCE:
@@ -740,7 +740,7 @@ const char *hooknum2str(unsigned int family, unsigned int hooknum)
 	return "unknown";
 }
 
-static const char *chain_policy2str(uint32_t policy)
+const char *chain_policy2str(uint32_t policy)
 {
 	switch (policy) {
 	case NF_DROP:
diff --git a/src/statement.c b/src/statement.c
index a5ef7d7d..6537bbbd 100644
--- a/src/statement.c
+++ b/src/statement.c
@@ -178,7 +178,7 @@ static const char *objref_type[NFT_OBJECT_MAX + 1] = {
 	[NFT_OBJECT_LIMIT]	= "limit",
 };
 
-static const char *objref_type_name(uint32_t type)
+const char *objref_type_name(uint32_t type)
 {
 	if (type > NFT_OBJECT_MAX)
 		return "unknown";
@@ -225,7 +225,7 @@ static const char *syslog_level[LOG_DEBUG + 1] = {
 	[LOG_DEBUG]	= "debug",
 };
 
-static const char *log_level(uint32_t level)
+const char *log_level(uint32_t level)
 {
 	if (level > LOG_DEBUG)
 		return "unknown";