diff --git a/src/fs/file.h b/src/fs/file.h
index 97eec9f..1cb605d 100644
--- a/src/fs/file.h
+++ b/src/fs/file.h
@@ -55,6 +55,13 @@
 #define ACL_OP_UPDATE_ERASE     0x05
 #define ACL_OP_READ_SEARCH      0x06
 
+#define ACL_NONE    { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
+#define ACL_ALL     { 0 }
+#define ACL_RO      { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 }
+#define ACL_RW      { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 }
+#define ACL_R_WP    { 0xff, 0xff, 0xff, 0xff, 0x90, 0x90, 0x00 }
+#define ACL_WP      { 0xff, 0xff, 0xff, 0xff, 0x90, 0x90, 0xff }
+
 #define SPECIFY_EF 0x1
 #define SPECIFY_DF 0x2
 #define SPECIFY_ANY 0x3