Collect and send kernel crash diagnostics

kernel_collector.h

Index: kernel_collector.h
diff --git a/kernel_collector.h b/kernel_collector.h
new file mode 100644
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+// 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.
+
+#ifndef _CRASH_REPORTER_KERNEL_COLLECTOR_H_
+#define _CRASH_REPORTER_KERNEL_COLLECTOR_H_
+
+#include <string>
+
+#include "base/file_path.h"
+#include "crash-reporter/crash_collector.h"
+#include "gtest/gtest_prod.h"  // for FRIEND_TEST
+
+class FilePath;
+
+// Kernel crash collector.
+class KernelCollector : public CrashCollector {
+ public:
+  KernelCollector();
+
+  virtual ~KernelCollector();
+
+  void OverridePreservedDumpPath(const FilePath &file_path);
+
+  // Enable collection.
+  bool Enable();
+
+  // Returns true if the kernel collection currently enabled.
+  bool IsEnabled() {
+    return is_enabled_;
+  }
+
+  // Collect any preserved kernel crash dump. Returns true if there was
+  // a dump (even if there were problems storing the dump), false otherwise.
+  bool Collect();
+
+ private:
+  friend class KernelCollectorTest;
+  FRIEND_TEST(KernelCollectorTest, ClearPreservedDump);
+  FRIEND_TEST(KernelCollectorTest, GetKernelCrashPath);
+  FRIEND_TEST(KernelCollectorTest, LoadPreservedDump);
+  FRIEND_TEST(KernelCollectorTest, CollectOK);
+
+  bool LoadPreservedDump(std::string *contents);
+  bool ClearPreservedDump();
+  FilePath GetKernelCrashPath(const FilePath &root_crash_path,
+                              time_t timestamp);
+
+  bool is_enabled_;
+  FilePath preserved_dump_path_;
+  static const char kClearingSequence[];
+};
+
+#endif  // _CRASH_REPORTER_KERNEL_COLLECTOR_H_