+#ifndef Y_LOFF_T
+#define Y_LOFF_T loff_t
+#endif
+
+/* Some RTOSs (eg. VxWorks) need strnlen. */
+size_t strnlen(const char *s, size_t maxlen);
+
+#define yaffs_strcat(a, b) strcat(a, b)
+#define yaffs_strcpy(a, b) strcpy(a, b)
+#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
+#define yaffs_strnlen(s, m) strnlen(s, m)
+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+#define yaffs_strcmp(a, b) strcasecmp(a, b)
+#define yaffs_strncmp(a, b, c) strncasecmp(a, b, c)
+#else
+#define yaffs_strcmp(a, b) strcmp(a, b)
+#define yaffs_strncmp(a, b, c) strncmp(a, b, c)
+#endif