[NaCl SDK] Remove syscalls wrappers for chmod and unlink.

native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <sys/types.h>  // Include something that will define __GLIBC__.
 
 // The entire file is wrapped in this #if. We do this so this .cc file can be
 // compiled, even on a non-newlib build.
 #if defined(__native_client__) && !defined(__GLIBC__) && !defined(__BIONIC__)
 
@@ skipping 254 matching lines @@
     __libnacl_irt_dev_fdio_init();
     EXPAND_SYMBOL_LIST_OPERATION(ASSIGN_REAL_PTR)
     assigned = true;
   }
 }
 
 #define CHECK_REAL(func)    \
   if (!REAL(func))          \
     assign_real_pointers();
 
+#define CHECK_REAL_NOSYS(func)  \
+  CHECK_REAL(func)              \
+  if (!REAL(func))              \
+    return ENOSYS;
+
 // "real" functions, i.e. the unwrapped original functions.
 
 int _real_close(int fd) {
   CHECK_REAL(close);
   return REAL(close)(fd);
 }
 
 void _real_exit(int status) {
   CHECK_REAL(exit);
   REAL(exit)(status);
@@ skipping 62 matching lines @@
 int _real_rmdir(const char* pathname) {
   CHECK_REAL(rmdir);
   return REAL(rmdir)(pathname);
 }
 
 int _real_write(int fd, const void* buf, size_t count, size_t* nwrote) {
   CHECK_REAL(write);
   return REAL(write)(fd, buf, count, nwrote);
 }
 
+int _real_getcwd(char* pathname, size_t len) {

[binji, 2014/08/20 18:13:35]

bionic too?

[Sam Clegg, 2014/08/21 10:19:34]

Done..   looks like we don't have a trybot that even builds the bionic SDK do
we?

+  CHECK_REAL_NOSYS(getcwd);
+  return REAL(getcwd)(pathname, len);
+}
+
 static bool s_wrapped = false;
 
 void kernel_wrap_init() {
   if (!s_wrapped) {
     LOG_TRACE("kernel_wrap_init");
     assign_real_pointers();
     EXPAND_SYMBOL_LIST_OPERATION(USE_WRAP)
     s_wrapped = true;
   }
 }
 
 void kernel_wrap_uninit() {
   if (s_wrapped) {
     LOG_TRACE("kernel_wrap_uninit");
     EXPAND_SYMBOL_LIST_OPERATION(USE_REAL)
     s_wrapped = false;
   }
 }
 
 EXTERN_C_END
 
 #endif  // defined(__native_client__) && !defined(__GLIBC__) ...