Record errno for SyncParent.

third_party/leveldatabase/env_chromium.cc

 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
 #include <errno.h>
 #include <stdio.h>
 
 #include <deque>
 
 #include "base/at_exit.h"
@@ skipping 434 matching lines @@
   }
 }
 
 Status ChromiumWritableFile::SyncParent() {
   Status s;
 #if !defined(OS_WIN)
   TRACE_EVENT0("leveldb", "SyncParent");
 
   int parent_fd =
       HANDLE_EINTR(open(parent_dir_.c_str(), O_RDONLY));
-  if (parent_fd < 0)
-    return MakeIOError(parent_dir_, strerror(errno), kSyncParent);
+  if (parent_fd < 0) {
+    int saved_errno = errno;
+    return MakeIOError(
+        parent_dir_, strerror(saved_errno), kSyncParent, saved_errno);
+  }
   if (HANDLE_EINTR(fsync(parent_fd)) != 0) {
-    s = MakeIOError(parent_dir_, strerror(errno), kSyncParent);
+    int saved_errno = errno;
+    s = MakeIOError(
+        parent_dir_, strerror(saved_errno), kSyncParent, saved_errno);
   };
   HANDLE_EINTR(close(parent_fd));
 #endif
   return s;
 }
 
 Status ChromiumWritableFile::Append(const Slice& data) {
   if (is_manifest_ && tracker_->DoesDirNeedSync(filename_)) {
     Status s = SyncParent();
     if (!s.ok())
@@ skipping 488 matching lines @@
 Env* IDBEnv() {
   return leveldb_env::idb_env.Pointer();
 }
 
 Env* Env::Default() {
   return leveldb_env::default_env.Pointer();
 }
 
 }  // namespace leveldb