Provides some of the missing POSIX file syscalls

src/untrusted/nacl/syscall_bindings_trampoline.h

Index: src/untrusted/nacl/syscall_bindings_trampoline.h
diff --git a/src/untrusted/nacl/syscall_bindings_trampoline.h b/src/untrusted/nacl/syscall_bindings_trampoline.h
index c29a4e4a21009a14daa2cb4ffb162ec60eb93320..6ff02771ee6abc248de20f3b3d6d4fdfa85c7511 100644
--- a/src/untrusted/nacl/syscall_bindings_trampoline.h
+++ b/src/untrusted/nacl/syscall_bindings_trampoline.h
@@ -76,6 +76,35 @@ typedef int (*TYPE_nacl_lseek) (int desc,
 
 typedef int (*TYPE_nacl_stat) (const char *file, struct stat *st);
 
+typedef int (*TYPE_nacl_fchdir) (int fd);
+
+typedef int (*TYPE_nacl_fchmod) (int fd, mode_t mode);
+
+typedef int (*TYPE_nacl_fsync) (int fd);
+
+typedef int (*TYPE_nacl_fdatasync) (int fd);
+
+typedef int (*TYPE_nacl_ftruncate) (int fd, off_t length);
+
+typedef int (*TYPE_nacl_truncate) (const char *pathname, off_t length);
+
+typedef int (*TYPE_nacl_lstat) (const char *pathname, struct stat *);
+
+typedef int (*TYPE_nacl_link) (const char *oldpath, const char *newpath);
+
+typedef int (*TYPE_nacl_chmod) (const char *path, mode_t mode);
+
+typedef int (*TYPE_nacl_access) (const char *path, int amode);
+
+typedef int (*TYPE_nacl_rename) (const char *oldpath, const char *newpath);
+
+typedef int (*TYPE_nacl_readlink) (const char *path, char *buf, size_t bufsiz);
+
+typedef int (*TYPE_nacl_symlink) (const char *oldpath, const char *newpath);
+
+typedef int (*TYPE_nacl_utimes) (const char *filename,
+                                 const struct timeval *times);
+
 /* ============================================================ */
 /* imc */
 /* ============================================================ */