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| 1 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <string> | |
| 6 | |
| 7 #include "base/file_util.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "base/string_util.h" | |
| 10 #include "crash/system_logging.h" | |
| 11 #include "crash/user_collector.h" | |
| 12 #include "gflags/gflags.h" | |
| 13 #include "metrics/metrics_library.h" | |
| 14 | |
| 15 #pragma GCC diagnostic ignored "-Wstrict-aliasing" | |
| 16 DEFINE_bool(init, false, "Initialize crash logging"); | |
| 17 DEFINE_bool(clean_shutdown, false, "Signal clean shutdown"); | |
| 18 DEFINE_bool(crash_test, false, "Crash test"); | |
| 19 DEFINE_string(exec, "", "Executable name crashed"); | |
| 20 DEFINE_int32(pid, -1, "Crashing PID"); | |
| 21 DEFINE_int32(signal, -1, "Signal causing crash"); | |
| 22 DEFINE_bool(unclean_check, true, "Check for unclean shutdown"); | |
| 23 #pragma GCC diagnostic error "-Wstrict-aliasing" | |
| 24 | |
| 25 static const char kCrashCounterHistogram[] = "Logging.CrashCounter"; | |
| 26 static const char kUncleanShutdownFile[] = | |
| 27 "/var/lib/crash_reporter/pending_clean_shutdown"; | |
| 28 | |
| 29 // Enumeration of kinds of crashes to be used in the CrashCounter histogram. | |
| 30 enum CrashKinds { | |
| 31 CRASH_KIND_KERNEL = 1, | |
| 32 CRASH_KIND_USER = 2, | |
| 33 CRASH_KIND_MAX | |
| 34 }; | |
| 35 | |
| 36 static MetricsLibrary s_metrics_lib; | |
| 37 static SystemLoggingImpl s_system_log; | |
| 38 | |
| 39 static bool IsMetricsCollectionAllowed() { | |
| 40 // TODO(kmixter): Eventually check system tainted state and | |
| 41 // move this down in metrics library where it would be explicitly | |
| 42 // checked when asked to send stats. | |
| 43 return true; | |
| 44 } | |
| 45 | |
| 46 static void CheckUncleanShutdown() { | |
| 47 FilePath unclean_file_path(kUncleanShutdownFile); | |
| 48 if (!file_util::PathExists(unclean_file_path)) { | |
| 49 return; | |
| 50 } | |
| 51 s_system_log.LogWarning("Last shutdown was not clean"); | |
| 52 if (IsMetricsCollectionAllowed()) { | |
| 53 s_metrics_lib.SendEnumToUMA(std::string(kCrashCounterHistogram), | |
| 54 CRASH_KIND_KERNEL, | |
| 55 CRASH_KIND_MAX); | |
| 56 } | |
| 57 if (!file_util::Delete(unclean_file_path, false)) { | |
| 58 s_system_log.LogError("Failed to delete unclean shutdown file %s", | |
| 59 kUncleanShutdownFile); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 static bool PrepareUncleanShutdownCheck() { | |
| 64 static const char empty[] = ""; | |
| 65 FilePath file_path(kUncleanShutdownFile); | |
| 66 file_util::CreateDirectory(file_path.DirName()); | |
| 67 return file_util::WriteFile(file_path, empty, 0) == 0; | |
| 68 } | |
| 69 | |
| 70 static void SignalCleanShutdown() { | |
| 71 s_system_log.LogInfo("Clean shutdown signalled"); | |
| 72 file_util::Delete(FilePath(kUncleanShutdownFile), false); | |
| 73 } | |
| 74 | |
| 75 static void CountUserCrash() { | |
| 76 CHECK(IsMetricsCollectionAllowed()); | |
| 77 s_metrics_lib.SendEnumToUMA(std::string(kCrashCounterHistogram), | |
| 78 CRASH_KIND_USER, | |
| 79 CRASH_KIND_MAX); | |
| 80 | |
| 81 // Announce through D-Bus whenever a user crash happens. This is | |
| 82 // used by the metrics daemon to log active use time between | |
| 83 // crashes. | |
| 84 // | |
| 85 // This could be done more efficiently by explicit fork/exec or | |
| 86 // using a dbus library directly. However, this should run | |
| 87 // relatively rarely and longer term we may need to implement a | |
| 88 // better way to do this that doesn't rely on D-Bus. | |
| 89 int status __attribute__((unused)) = | |
| 90 system("/usr/bin/dbus-send --type=signal --system / " | |
| 91 "org.chromium.CrashReporter.UserCrash"); | |
| 92 } | |
| 93 | |
| 94 int main(int argc, char *argv[]) { | |
| 95 google::ParseCommandLineFlags(&argc, &argv, true); | |
| 96 FilePath my_path(argv[0]); | |
| 97 file_util::AbsolutePath(&my_path); | |
| 98 s_metrics_lib.Init(); | |
| 99 s_system_log.Initialize(my_path.BaseName().value().c_str()); | |
| 100 UserCollector user_collector; | |
| 101 user_collector.Initialize(CountUserCrash, | |
| 102 my_path.value(), | |
| 103 IsMetricsCollectionAllowed, | |
| 104 &s_system_log); | |
| 105 | |
| 106 if (FLAGS_init) { | |
| 107 CHECK(!FLAGS_clean_shutdown) << "Incompatible options"; | |
| 108 user_collector.Enable(); | |
| 109 if (FLAGS_unclean_check) { | |
| 110 CheckUncleanShutdown(); | |
| 111 if (!PrepareUncleanShutdownCheck()) { | |
| 112 s_system_log.LogError("Unable to create shutdown check file"); | |
| 113 } | |
| 114 } | |
| 115 return 0; | |
| 116 } | |
| 117 | |
| 118 if (FLAGS_clean_shutdown) { | |
| 119 SignalCleanShutdown(); | |
| 120 user_collector.Disable(); | |
| 121 return 0; | |
| 122 } | |
| 123 | |
| 124 // Handle a specific user space crash. | |
| 125 CHECK(FLAGS_signal != -1) << "Signal must be set"; | |
| 126 CHECK(FLAGS_pid != -1) << "PID must be set"; | |
| 127 CHECK(FLAGS_exec != "") << "Executable name must be set"; | |
| 128 | |
| 129 // Make it possible to test what happens when we crash while | |
| 130 // handling a crash. | |
| 131 if (FLAGS_crash_test) { | |
| 132 *(char *)0 = 0; | |
| 133 return 0; | |
| 134 } | |
| 135 | |
| 136 user_collector.HandleCrash(FLAGS_signal, FLAGS_pid, FLAGS_exec); | |
| 137 | |
| 138 return 0; | |
| 139 } | |
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Chromium Code Reviews
Issue 2868032:
Remove source from crash-reporter and crash-dumper as they are no longer necessary. (Closed)
Base URL: ssh://git@chromiumos-git//crash.git