1 files changed, 101 insertions, 0 deletions
diff --git a/include/utils.h b/include/utils.h
new file mode 100644
index 0000000..8af5a8e
--- /dev/null
+++ b/include/utils.h
@@ -0,0 +1,101 @@
+#ifndef LIBNFTNL_UTILS_H
+#define LIBNFTNL_UTILS_H 1
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <libnftnl/common.h>
+
+#include "config.h"
+#ifdef HAVE_VISIBILITY_HIDDEN
+#	define __visible	__attribute__((visibility("default")))
+#	define EXPORT_SYMBOL(x)	typeof(x) (x) __visible;
+#else
+#	define __visible
+#	define EXPORT_SYMBOL
+#endif
+
+#define __noreturn	__attribute__((__noreturn__))
+
+#define xfree(ptr)	free((void *)ptr);
+
+#define div_round_up(n, d)	(((n) + (d) - 1) / (d))
+
+void __noreturn __abi_breakage(const char *file, int line, const char *reason);
+
+#define abi_breakage()	\
+	__abi_breakage(__FILE__, __LINE__, strerror(errno));
+
+void __nftnl_assert_fail(uint16_t attr, const char *filename, int line);
+
+#define nftnl_assert(val, attr, expr)			\
+  ((!val || expr)					\
+   ? (void)0						\
+   : __nftnl_assert_fail(attr, __FILE__, __LINE__))
+
+#define nftnl_assert_validate(data, _validate_array, _attr, _data_len)		\
+({										\
+	if (!data)								\
+		__nftnl_assert_fail(attr, __FILE__, __LINE__);			\
+	if (_validate_array[_attr])						\
+		nftnl_assert(data, attr, _validate_array[_attr] == _data_len);	\
+})
+
+void __nftnl_assert_attr_exists(uint16_t attr, uint16_t attr_max,
+				const char *filename, int line);
+
+#define nftnl_assert_attr_exists(_attr, _attr_max)					\
+({											\
+	if (_attr > _attr_max)								\
+		__nftnl_assert_attr_exists(_attr, _attr_max, __FILE__, __LINE__);	\
+})
+
+#define SNPRINTF_BUFFER_SIZE(ret, remain, offset)	\
+	if (ret < 0)					\
+		ret = 0;				\
+	offset += ret;					\
+	if (ret > remain)				\
+		ret = remain;				\
+	remain -= ret;					\
+
+
+#define BUILD_BUG_ON_ZERO(e)	(sizeof(char[1 - 2 * !!(e)]) - 1)
+
+#define __must_be_array(a) \
+	BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0])))
+
+#define array_size(arr)		(sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
+
+const char *nftnl_family2str(uint32_t family);
+int nftnl_str2family(const char *family);
+
+enum nftnl_type {
+	NFTNL_TYPE_U8,
+	NFTNL_TYPE_U16,
+	NFTNL_TYPE_U32,
+	NFTNL_TYPE_U64,
+	NFTNL_TYPE_S8,
+	NFTNL_TYPE_S16,
+	NFTNL_TYPE_S32,
+	NFTNL_TYPE_S64,
+};
+
+int nftnl_strtoi(const char *string, int base, void *number, enum nftnl_type type);
+int nftnl_get_value(enum nftnl_type type, void *val, void *out);
+
+const char *nftnl_verdict2str(uint32_t verdict);
+int nftnl_str2verdict(const char *verdict, int *verdict_num);
+
+const char *nftnl_cmd2tag(enum nftnl_cmd_type cmd);
+uint32_t nftnl_str2cmd(const char *cmd);
+
+enum nftnl_cmd_type nftnl_flag2cmd(uint32_t flags);
+
+int nftnl_fprintf(FILE *fpconst, const void *obj, uint32_t cmd, uint32_t type,
+		  uint32_t flags,
+		  int (*snprintf_cb)(char *buf, size_t bufsiz, const void *obj,
+			  	     uint32_t cmd, uint32_t type,
+				     uint32_t flags));
+
+#endif