diff --git a/fs_functions.h b/fs_functions.h
index 78e979e..eeec621 100644
--- a/fs_functions.h
+++ b/fs_functions.h
@@ -28,7 +28,57 @@
 extern "C" {
 #endif
 
-#include "common/fs_defs.h"
+#include <gctypes.h>
+
+/* FS defines and types */
+#define FS_MAX_LOCALPATH_SIZE           511
+#define FS_MAX_MOUNTPATH_SIZE           128
+#define FS_MAX_FULLPATH_SIZE            (FS_MAX_LOCALPATH_SIZE + FS_MAX_MOUNTPATH_SIZE)
+#define FS_MAX_ARGPATH_SIZE             FS_MAX_FULLPATH_SIZE
+
+#define FS_STATUS_OK                    0
+#define FS_RET_UNSUPPORTED_CMD          0x0400
+#define FS_RET_NO_ERROR                 0x0000
+#define FS_RET_ALL_ERROR                (unsigned int)(-1)
+
+#define FS_STAT_FLAG_IS_DIRECTORY       0x80000000
+
+/* max length of file/dir name */
+#define FS_MAX_ENTNAME_SIZE             256
+
+#define FS_SOURCETYPE_EXTERNAL          0
+#define FS_SOURCETYPE_HFIO              1
+#define FS_SOURCETYPE_HFIO              1
+
+#define FS_STATUS_OK                    0
+#define FS_STATUS_EXISTS	            -5
+#define FS_STATUS_STORAGE_FULL			-12
+#define FS_STATUS_JOURNAL_FULL			-13
+
+#define FS_MOUNT_SOURCE_SIZE            0x300
+#define FS_CLIENT_SIZE                  0x1700
+#define FS_CMD_BLOCK_SIZE               0xA80
+
+typedef struct
+{
+    uint32_t flag;
+    uint32_t permission;
+    uint32_t owner_id;
+    uint32_t group_id;
+    uint32_t size;
+    uint32_t alloc_size;
+    uint64_t quota_size;
+    uint32_t ent_id;
+    uint64_t ctime;
+    uint64_t mtime;
+    uint8_t attributes[48];
+} __attribute__((packed)) FSStat;
+
+typedef struct
+{
+    FSStat      stat;
+    char        name[FS_MAX_ENTNAME_SIZE];
+} FSDirEntry;
 
 void InitFSFunctionPointers(void);