posix: don't complain when stat() fails with ENOENT

base/file_util_posix.cc

 // Copyright (c) 2006-2008 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 "base/file_util.h"
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <fnmatch.h>
@@ skipping 627 matching lines @@
     return false;
 
 #if !defined(OS_LINUX) && !defined(OS_MACOSX)
   #error Depending on the definition of struct dirent, additional space for \
       pathname may be needed
 #endif
   struct dirent dent_buf;
   struct dirent* dent;
   while (readdir_r(dir, &dent_buf, &dent) == 0 && dent) {
     DirectoryEntryInfo info;
-    FilePath full_name;
-    int stat_value;
+    info.filename = FilePath(dent->d_name);
 
-    info.filename = FilePath(dent->d_name);
-    full_name = source.Append(dent->d_name);
+    FilePath full_name = source.Append(dent->d_name);
+    int ret;
     if (show_links)
-      stat_value = lstat(full_name.value().c_str(), &info.stat);
+      ret = lstat(full_name.value().c_str(), &info.stat);
     else
-      stat_value = stat(full_name.value().c_str(), &info.stat);
-    if (stat_value < 0) {
-      LOG(ERROR) << "Couldn't stat file: " <<
-          source.Append(dent->d_name).value().c_str() << " errno = " << errno;
+      ret = stat(full_name.value().c_str(), &info.stat);
+    if (ret < 0) {
+      // Print the stat() error message unless it was ENOENT and we're
+      // following symlinks.
+      if (!(ret == ENOENT && !show_links)) {
+        LOG(ERROR) << "Couldn't stat "
+                   << source.Append(dent->d_name).value() << ": "
+                   << strerror(errno);
+      }
       memset(&info.stat, 0, sizeof(info.stat));
     }
     entries->push_back(info);
   }
 
   closedir(dir);
   return true;
 }
 
 bool FileEnumerator::CompareFiles(const DirectoryEntryInfo& a,
@@ skipping 50 matching lines @@
     munmap(data_, length_);
   if (file_ != -1)
     close(file_);
 
   data_ = NULL;
   length_ = 0;
   file_ = -1;
 }
 
 } // namespace file_util