Remove unused errno parsing for leveldb status codes

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 "third_party/leveldatabase/env_chromium.h"
 
 #if defined(OS_POSIX)
 #include <dirent.h>
 #include <sys/types.h>
 #endif
@@ skipping 394 matching lines @@
                    const std::string& message,
                    MethodID method) {
   char buf[512];
   snprintf(buf, sizeof(buf), "%s (ChromeMethodOnly: %d::%s)", message.c_str(),
            method, MethodIDToString(method));
   return Status::IOError(filename, buf);
 }
 
 ErrorParsingResult ParseMethodAndError(const leveldb::Status& status,
                                        MethodID* method_param,
-                                       int* error) {
+                                       base::File::Error* error) {
   const std::string status_string = status.ToString();
   int method;
   if (RE2::PartialMatch(status_string.c_str(), "ChromeMethodOnly: (\\d+)",
                         &method)) {
     *method_param = static_cast<MethodID>(method);
     return METHOD_ONLY;
   }
+  int parsed_error;
   if (RE2::PartialMatch(status_string.c_str(),
                         "ChromeMethodPFE: (\\d+)::.*::(\\d+)", &method,
-                        error)) {
-    *error = -*error;
+                        &parsed_error)) {
     *method_param = static_cast<MethodID>(method);
+    *error = static_cast<base::File::Error>(-parsed_error);
+    DCHECK_LT(*error, base::File::FILE_OK);
+    DCHECK_GT(*error, base::File::FILE_ERROR_MAX);
     return METHOD_AND_PFE;
   }
-  if (RE2::PartialMatch(status_string.c_str(),
-                        "ChromeMethodErrno: (\\d+)::.*::(\\d+)", &method,
-                        error)) {
-    *method_param = static_cast<MethodID>(method);
-    return METHOD_AND_ERRNO;
-  }
   return NONE;
 }
 
 // Keep in sync with LevelDBCorruptionTypes in histograms.xml. Also, don't
 // change the order because indices into this array have been recorded in uma
 // histograms.
 const char* patterns[] = {
   "missing files",
   "log record too small",
   "corrupted internal key",
@@ skipping 54 matching lines @@
   int code = GetCorruptionCode(status);
   if (code == 0)
     return "Unknown corruption";
   return patterns[code - 1];
 }
 
 bool IndicatesDiskFull(const leveldb::Status& status) {
   if (status.ok())
     return false;
   leveldb_env::MethodID method;
-  int error = -1;
+  base::File::Error error = base::File::FILE_OK;
   leveldb_env::ErrorParsingResult result =
       leveldb_env::ParseMethodAndError(status, &method, &error);
   return (result == leveldb_env::METHOD_AND_PFE &&
           static_cast<base::File::Error>(error) ==
-              base::File::FILE_ERROR_NO_SPACE) ||
-         (result == leveldb_env::METHOD_AND_ERRNO && error == ENOSPC);
+              base::File::FILE_ERROR_NO_SPACE);
 }
 
 bool ChromiumEnv::MakeBackup(const std::string& fname) {
   FilePath original_table_name = FilePath::FromUTF8Unsafe(fname);
   FilePath backup_table_name =
       original_table_name.ReplaceExtension(backup_table_extension);
   return base::CopyFile(original_table_name, backup_table_name);
 }
 
 ChromiumEnv::ChromiumEnv()
@@ skipping 573 matching lines @@
 
 Env* IDBEnv() {
   return leveldb_env::idb_env.Pointer();
 }
 
 Env* Env::Default() {
   return leveldb_env::default_env.Pointer();
 }
 
 }  // namespace leveldb