Collect and send kernel crash diagnostics

unclean_shutdown_collector.cc

+// Copyright (c) 2010 The Chromium OS 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 "crash-reporter/unclean_shutdown_collector.h"
+
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "crash-reporter/system_logging.h"
+
+static const char kUncleanShutdownFile[] =
+    "/var/lib/crash_reporter/pending_clean_shutdown";
+
+UncleanShutdownCollector::UncleanShutdownCollector()
+    : unclean_shutdown_file_(kUncleanShutdownFile) {
+}
+
+UncleanShutdownCollector::~UncleanShutdownCollector() {
+}
+
+bool UncleanShutdownCollector::Enable() {
+  FilePath file_path(unclean_shutdown_file_);
+  file_util::CreateDirectory(file_path.DirName());
+  if (file_util::WriteFile(file_path, "", 0) != 0) {
+    logger_->LogError("Unable to create shutdown check file");
+    return false;
+  }
+  return true;
+}
+
+bool UncleanShutdownCollector::DeleteUncleanShutdownFile() {
+  if (!file_util::Delete(FilePath(unclean_shutdown_file_), false)) {
+    logger_->LogError("Failed to delete unclean shutdown file %s",
+                      unclean_shutdown_file_);
+    return false;
+  }
+  return true;
+}
+
+bool UncleanShutdownCollector::Collect() {
+  FilePath unclean_file_path(unclean_shutdown_file_);
+  if (!file_util::PathExists(unclean_file_path)) {
+    return false;
+  }
+  logger_->LogWarning("Last shutdown was not clean");
+  DeleteUncleanShutdownFile();
+
+  if (is_feedback_allowed_function_()) {
+    count_crash_function_();
+  }
+  return true;
+}
+
+bool UncleanShutdownCollector::Disable() {
+  logger_->LogInfo("Clean shutdown signalled");
+  return DeleteUncleanShutdownFile();
+}