diff --git a/include/xfuncs.h b/include/xfuncs.h
index 7885a6e..e3f120a 100644
--- a/include/xfuncs.h
+++ b/include/xfuncs.h
@@ -3,6 +3,7 @@
 
 #include <linux/types.h>
 #include <stdarg.h>
+#include <wchar.h>
 
 void *xmalloc(size_t size);
 void *xrealloc(void *ptr, size_t size);
@@ -14,4 +15,8 @@
 char *xasprintf(const char *fmt, ...) __attribute__ ((format(__printf__, 1, 2)));
 char *xvasprintf(const char *fmt, va_list ap);
 
+wchar_t *xstrdup_wchar(const wchar_t *src);
+wchar_t *xstrdup_char_to_wchar(const char *src);
+char *xstrdup_wchar_to_char(const wchar_t *src);
+
 #endif /* __XFUNCS_H */
diff --git a/lib/xfuncs.c b/lib/xfuncs.c
index 6111f6d..152081c 100644
--- a/lib/xfuncs.c
+++ b/lib/xfuncs.c
@@ -22,6 +22,7 @@
 #include <common.h>
 #include <malloc.h>
 #include <module.h>
+#include <wchar.h>
 
 void *xmalloc(size_t size)
 {
@@ -127,3 +128,33 @@
 	return p;
 }
 EXPORT_SYMBOL(xasprintf);
+
+wchar_t *xstrdup_wchar(const wchar_t *s)
+{
+	wchar_t *p = strdup_wchar(s);
+
+	if (!p)
+		panic("ERROR: out of memory\n");
+	return p;
+}
+EXPORT_SYMBOL(xstrdup_wchar);
+
+wchar_t *xstrdup_char_to_wchar(const char *s)
+{
+	wchar_t *p = strdup_char_to_wchar(s);
+
+	if (!p)
+		panic("ERROR: out of memory\n");
+	return p;
+}
+EXPORT_SYMBOL(xstrdup_char_to_wchar);
+
+char *xstrdup_wchar_to_char(const wchar_t *s)
+{
+	char *p = strdup_wchar_to_char(s);
+
+	if (!p)
+		panic("ERROR: out of memory\n");
+	return p;
+}
+EXPORT_SYMBOL(xstrdup_wchar_to_char);