diff -r f33974f0dce0 -r aa8393527b1e src/server/public/vfs.h
--- a/src/server/public/vfs.h	Thu Aug 31 16:29:49 2017 +0200
+++ b/src/server/public/vfs.h	Sat Jan 13 19:01:00 2018 +0100
@@ -36,6 +36,8 @@
 extern "C" {
 #endif
 
+#define VFS_CHECKS_ACL 0x0001  
+    
 typedef struct VFS_IO     VFS_IO;
 typedef struct VFS_DIRIO  VFS_DIRIO;
 typedef struct VFSFile    VFSFile;
@@ -52,6 +54,7 @@
     VFS_DIR (*opendir)(VFSContext *ctx, char *path);
     int (*mkdir)(VFSContext *ctx, char *path);
     int (*unlink)(VFSContext *ctx, char *path);
+    uint32_t flags;
 };
 
 struct VFSContext {
@@ -89,8 +92,12 @@
 struct VFS_IO {
     ssize_t (*read)(SYS_FILE fd, void *buf, size_t nbyte);
     ssize_t (*write)(SYS_FILE fd, const void *buf, size_t nbyte);
+    ssize_t (*pread)(SYS_FILE fd, void *buf, size_t nbyte, off_t offset);
+    ssize_t (*pwrite)(SYS_FILE fd, const void *buf, size_t nbyte, off_t offset);
     off_t (*seek)(SYS_FILE fd, off_t offset, int whence);
     void (*close)(SYS_FILE fd);
+    int (*opt_aioread)(aiocb_s *aiocb);
+    int (*opt_aiowrite)(aiocb_s *aiocb);
 };
 
 struct VFS_DIRIO {