Provides some of the missing POSIX file syscalls

src/trusted/desc/nacl_desc_base.c

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * NaCl Service Runtime.  I/O Descriptor / Handle abstraction.  Memory
  * mapping using descriptors.
  */
@@ skipping 369 matching lines @@
                                 struct nacl_abi_stat    *statbuf) {
   UNREFERENCED_PARAMETER(statbuf);
 
   NaClLog(LOG_ERROR,
           "Fstat method is not implemented for object of type %s\n",
           NaClDescTypeString(((struct NaClDescVtbl const *)
                               vself->base.vtbl)->typeTag));
   return -NACL_ABI_EINVAL;
 }
 
+int NaClDescFchdirNotImplemented(struct NaClDesc *vself) {
+  NaClLog(LOG_ERROR,
+          "Fchdir method is not implemented for object of type %s\n",
+          NaClDescTypeString(((struct NaClDescVtbl const *)
+                              vself->base.vtbl)->typeTag));
+  return -NACL_ABI_EINVAL;
+}
+
+int NaClDescFchmodNotImplemented(struct NaClDesc *vself,
+                                 int             mode) {
+  UNREFERENCED_PARAMETER(mode);
+
+  NaClLog(LOG_ERROR,
+          "Fchmod method is not implemented for object of type %s\n",
+          NaClDescTypeString(((struct NaClDescVtbl const *)
+                              vself->base.vtbl)->typeTag));
+  return -NACL_ABI_EINVAL;
+}
+
+int NaClDescFsyncNotImplemented(struct NaClDesc *vself) {
+  NaClLog(LOG_ERROR,
+          "Fsync method is not implemented for object of type %s\n",
+          NaClDescTypeString(((struct NaClDescVtbl const *)
+                              vself->base.vtbl)->typeTag));
+  return -NACL_ABI_EINVAL;
+}
+
+int NaClDescFdatasyncNotImplemented(struct NaClDesc *vself) {
+  NaClLog(LOG_ERROR,
+          "Fdatasync method is not implemented for object of type %s\n",
+          NaClDescTypeString(((struct NaClDescVtbl const *)
+                              vself->base.vtbl)->typeTag));
+  return -NACL_ABI_EINVAL;
+}
+
+int NaClDescFtruncateNotImplemented(struct NaClDesc  *vself,
+                                    nacl_abi_off_t   length) {
+  UNREFERENCED_PARAMETER(length);
+
+  NaClLog(LOG_ERROR,
+          "Ftruncate method is not implemented for object of type %s\n",
+          NaClDescTypeString(((struct NaClDescVtbl const *)
+                              vself->base.vtbl)->typeTag));
+  return -NACL_ABI_EINVAL;
+}
+
 ssize_t NaClDescGetdentsNotImplemented(struct NaClDesc          *vself,
                                        void                     *dirp,
                                        size_t                   count) {
   UNREFERENCED_PARAMETER(dirp);
   UNREFERENCED_PARAMETER(count);
 
   NaClLog(LOG_ERROR,
           "Getdents method is not implemented for object of type %s\n",
           NaClDescTypeString(((struct NaClDescVtbl const *)
                               vself->base.vtbl)->typeTag));
@@ skipping 307 matching lines @@
   },
   NaClDescMapNotImplemented,
   NACL_DESC_UNMAP_NOT_IMPLEMENTED
   NaClDescReadNotImplemented,
   NaClDescWriteNotImplemented,
   NaClDescSeekNotImplemented,
   NaClDescPReadNotImplemented,
   NaClDescPWriteNotImplemented,
   NaClDescIoctlNotImplemented,
   NaClDescFstatNotImplemented,
+  NaClDescFchdirNotImplemented,
+  NaClDescFchmodNotImplemented,
+  NaClDescFsyncNotImplemented,
+  NaClDescFdatasyncNotImplemented,
+  NaClDescFtruncateNotImplemented,
   NaClDescGetdentsNotImplemented,
   NaClDescExternalizeSizeNotImplemented,
   NaClDescExternalizeNotImplemented,
   NaClDescLockNotImplemented,
   NaClDescTryLockNotImplemented,
   NaClDescUnlockNotImplemented,
   NaClDescWaitNotImplemented,
   NaClDescTimedWaitAbsNotImplemented,
   NaClDescSignalNotImplemented,
   NaClDescBroadcastNotImplemented,
   NaClDescSendMsgNotImplemented,
   NaClDescRecvMsgNotImplemented,
   NaClDescLowLevelSendMsgNotImplemented,
   NaClDescLowLevelRecvMsgNotImplemented,
   NaClDescConnectAddrNotImplemented,
   NaClDescAcceptConnNotImplemented,
   NaClDescPostNotImplemented,
   NaClDescSemWaitNotImplemented,
   NaClDescGetValueNotImplemented,
   NaClDescSetMetadata,
   NaClDescGetMetadata,
   NaClDescSetFlags,
   NaClDescGetFlags,
   (enum NaClDescTypeTag) -1,  /* NaClDesc is an abstract base class */
 };