linux: Implement crash reporter.
This commit is contained in:
parent
2f088c5caa
commit
4a3341e31e
5 changed files with 927 additions and 8 deletions
9
atom.gyp
9
atom.gyp
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@ -170,6 +170,8 @@
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'common/crash_reporter/crash_reporter_mac.mm',
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'common/crash_reporter/crash_reporter_win.cc',
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'common/crash_reporter/crash_reporter_win.h',
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'common/crash_reporter/linux/crash_dump_handler.cc',
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'common/crash_reporter/linux/crash_dump_handler.h',
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'common/crash_reporter/win/crash_service.cc',
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'common/crash_reporter/win/crash_service.h',
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'common/crash_reporter/win/crash_service_main.cc',
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@ -411,6 +413,13 @@
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'-rdynamic',
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],
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},
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# Required settings of using breakpad.
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'include_dirs': [
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'vendor/breakpad/src',
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],
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'cflags': [
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'-Wno-empty-body',
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],
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'dependencies': [
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'vendor/breakpad/breakpad.gyp:breakpad_client',
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],
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@ -1,28 +1,186 @@
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// Copyright (c) 2013 GitHub, Inc. All rights reserved.
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// Copyright (c) 2014 GitHub, Inc. All rights reserved.
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "common/crash_reporter/crash_reporter_linux.h"
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// #include <fcntl.h>
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// #include <poll.h>
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// #include <signal.h>
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// #include <stdlib.h>
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// #include <sys/socket.h>
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#include <sys/time.h>
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// #include <sys/types.h>
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// #include <sys/uio.h>
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// #include <sys/wait.h>
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// #include <time.h>
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#include <unistd.h>
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#include "base/debug/crash_logging.h"
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#include "base/files/file_path.h"
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#include "base/linux_util.h"
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#include "base/logging.h"
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#include "base/path_service.h"
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// #include "base/platform_file.h"
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// #include "base/posix/global_descriptors.h"
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#include "base/process/memory.h"
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#include "base/memory/singleton.h"
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// #include "base/strings/string_util.h"
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#include "common/crash_reporter/linux/crash_dump_handler.h"
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// #include "content/public/common/content_descriptors.h"
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#include "vendor/breakpad/src/client/linux/handler/exception_handler.h"
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#include "vendor/breakpad/src/common/linux/linux_libc_support.h"
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using google_breakpad::ExceptionHandler;
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using google_breakpad::MinidumpDescriptor;
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namespace crash_reporter {
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namespace {
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static const size_t kDistroSize = 128;
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// Define a preferred limit on minidump sizes, because Crash Server currently
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// throws away any larger than 1.2MB (1.2 * 1024 * 1024). A value of -1 means
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// no limit.
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static const off_t kMaxMinidumpFileSize = 1258291;
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uint64_t g_process_start_time = 0;
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pid_t g_pid = 0;
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ExceptionHandler* g_breakpad = NULL;
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CrashKeyStorage* g_crash_keys = NULL;
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// The following helper functions are for calculating uptime.
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// Converts a struct timeval to milliseconds.
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uint64_t timeval_to_ms(struct timeval *tv) {
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uint64_t ret = tv->tv_sec; // Avoid overflow by explicitly using a uint64_t.
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ret *= 1000;
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ret += tv->tv_usec / 1000;
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return ret;
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}
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void SetProcessStartTime() {
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// Set the base process start time value.
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struct timeval tv;
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if (!gettimeofday(&tv, NULL))
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g_process_start_time = timeval_to_ms(&tv);
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else
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g_process_start_time = 0;
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}
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// Populates the passed in allocated string and its size with the distro of
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// the crashing process.
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// The passed string is expected to be at least kDistroSize bytes long.
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void PopulateDistro(char* distro, size_t* distro_len_param) {
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size_t distro_len = std::min(my_strlen(base::g_linux_distro), kDistroSize);
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memcpy(distro, base::g_linux_distro, distro_len);
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if (distro_len_param)
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*distro_len_param = distro_len;
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}
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bool CrashDone(const MinidumpDescriptor& minidump,
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void* context,
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const bool succeeded) {
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// WARNING: this code runs in a compromised context. It may not call into
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// libc nor allocate memory normally.
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if (!succeeded) {
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const char msg[] = "Failed to generate minidump.";
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WriteLog(msg, sizeof(msg) - 1);
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return false;
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}
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DCHECK(!minidump.IsFD());
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BreakpadInfo info = {0};
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info.filename = minidump.path();
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info.fd = minidump.fd();
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#if defined(ADDRESS_SANITIZER)
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google_breakpad::PageAllocator allocator;
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const size_t log_path_len = my_strlen(minidump.path());
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char* log_path = reinterpret_cast<char*>(allocator.Alloc(log_path_len + 1));
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my_memcpy(log_path, minidump.path(), log_path_len);
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my_memcpy(log_path + log_path_len - 4, ".log", 4);
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log_path[log_path_len] = '\0';
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info.log_filename = log_path;
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#endif
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// TODO(zcbenz): Set the correct process_type here.
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info.process_type = "browser";
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info.process_type_length = 7;
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info.distro = base::g_linux_distro;
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info.distro_length = my_strlen(base::g_linux_distro);
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info.upload = true;
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info.process_start_time = g_process_start_time;
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info.oom_size = base::g_oom_size;
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info.pid = g_pid;
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info.crash_keys = g_crash_keys;
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HandleCrashDump(info);
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return true;
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}
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#if defined(ADDRESS_SANITIZER)
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extern "C"
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void __asan_set_error_report_callback(void (*cb)(const char*));
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extern "C"
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void AsanLinuxBreakpadCallback(const char* report) {
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// Send minidump here.
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g_breakpad->SimulateSignalDelivery(SIGKILL);
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}
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#endif
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} // namespace
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CrashReporterLinux::CrashReporterLinux() {
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SetProcessStartTime();
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g_pid = getpid();
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// Make base::g_linux_distro work.
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base::SetLinuxDistro(base::GetLinuxDistro());
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}
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CrashReporterLinux::~CrashReporterLinux() {
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}
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void CrashReporterLinux::InitBreakpad(const std::string& product_name,
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const std::string& version,
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const std::string& company_name,
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const std::string& submit_url,
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bool auto_submit,
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bool skip_system_crash_handler) {
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const std::string& version,
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const std::string& company_name,
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const std::string& submit_url,
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bool auto_submit,
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bool skip_system_crash_handler) {
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EnableCrashDumping();
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#if defined(ADDRESS_SANITIZER)
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// Register the callback for AddressSanitizer error reporting.
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__asan_set_error_report_callback(AsanLinuxBreakpadCallback);
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#endif
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}
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void CrashReporterLinux::SetUploadParameters() {
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upload_parameters_["platform"] = "linux";
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// TODO(zcbenz): Convert upload parameters to crash keys here.
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g_crash_keys = new CrashKeyStorage;
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}
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void CrashReporterLinux::EnableCrashDumping() {
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base::FilePath tmp_path("/tmp");
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PathService::Get(base::DIR_TEMP, &tmp_path);
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base::FilePath dumps_path(tmp_path);
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DCHECK(!g_breakpad);
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MinidumpDescriptor minidump_descriptor(dumps_path.value());
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minidump_descriptor.set_size_limit(kMaxMinidumpFileSize);
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g_breakpad = new ExceptionHandler(
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minidump_descriptor,
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NULL,
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CrashDone,
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this,
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true, // Install handlers.
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-1); // Server file descriptor. -1 for in-process.
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}
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// static
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@ -1,4 +1,4 @@
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// Copyright (c) 2013 GitHub, Inc. All rights reserved.
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// Copyright (c) 2014 GitHub, Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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@ -30,9 +30,10 @@ class CrashReporterLinux : public CrashReporter {
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CrashReporterLinux();
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virtual ~CrashReporterLinux();
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void EnableCrashDumping();
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DISALLOW_COPY_AND_ASSIGN(CrashReporterLinux);
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};
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} // namespace crash_reporter
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#endif // ATOM_COMMON_CRASH_REPORTER_CRASH_REPORTER_LINUX_H_
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707
common/crash_reporter/linux/crash_dump_handler.cc
Normal file
707
common/crash_reporter/linux/crash_dump_handler.cc
Normal file
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@ -0,0 +1,707 @@
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// Copyright (c) 2014 GitHub, Inc. All rights reserved.
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// For linux_syscall_support.h. This makes it safe to call embedded system
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// calls when in seccomp mode.
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#include "common/crash_reporter/linux/crash_dump_handler.h"
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#include <poll.h>
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#include <algorithm>
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#include "base/posix/eintr_wrapper.h"
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#include "vendor/breakpad/src/client/linux/minidump_writer/directory_reader.h"
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#include "vendor/breakpad/src/common/linux/linux_libc_support.h"
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#include "vendor/breakpad/src/common/memory.h"
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#include "third_party/lss/linux_syscall_support.h"
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#define STAT_STRUCT struct kernel_stat
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#define FSTAT_FUNC sys_fstat
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// Some versions of gcc are prone to warn about unused return values. In cases
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// where we either a) know the call cannot fail, or b) there is nothing we
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// can do when a call fails, we mark the return code as ignored. This avoids
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// spurious compiler warnings.
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#define IGNORE_RET(x) do { if (x); } while (0)
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namespace crash_reporter {
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namespace {
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const char kUploadURL[] = "https://clients2.google.com/cr/report";
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// String buffer size to use to convert a uint64_t to string.
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const size_t kUint64StringSize = 21;
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// Writes the value |v| as 16 hex characters to the memory pointed at by
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// |output|.
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void write_uint64_hex(char* output, uint64_t v) {
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static const char hextable[] = "0123456789abcdef";
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for (int i = 15; i >= 0; --i) {
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output[i] = hextable[v & 15];
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v >>= 4;
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}
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}
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// uint64_t version of my_int_len() from
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// breakpad/src/common/linux/linux_libc_support.h. Return the length of the
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// given, non-negative integer when expressed in base 10.
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unsigned my_uint64_len(uint64_t i) {
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if (!i)
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return 1;
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unsigned len = 0;
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while (i) {
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len++;
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i /= 10;
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}
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return len;
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}
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// uint64_t version of my_uitos() from
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// breakpad/src/common/linux/linux_libc_support.h. Convert a non-negative
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// integer to a string (not null-terminated).
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void my_uint64tos(char* output, uint64_t i, unsigned i_len) {
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for (unsigned index = i_len; index; --index, i /= 10)
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output[index - 1] = '0' + (i % 10);
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}
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// Converts a struct timeval to milliseconds.
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uint64_t kernel_timeval_to_ms(struct kernel_timeval *tv) {
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uint64_t ret = tv->tv_sec; // Avoid overflow by explicitly using a uint64_t.
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ret *= 1000;
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ret += tv->tv_usec / 1000;
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return ret;
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}
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size_t LengthWithoutTrailingSpaces(const char* str, size_t len) {
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while (len > 0 && str[len - 1] == ' ') {
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len--;
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}
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return len;
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}
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// MIME substrings.
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const char g_rn[] = "\r\n";
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const char g_form_data_msg[] = "Content-Disposition: form-data; name=\"";
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const char g_quote_msg[] = "\"";
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const char g_dashdash_msg[] = "--";
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const char g_dump_msg[] = "upload_file_minidump\"; filename=\"dump\"";
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#if defined(ADDRESS_SANITIZER)
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const char g_log_msg[] = "upload_file_log\"; filename=\"log\"";
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#endif
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const char g_content_type_msg[] = "Content-Type: application/octet-stream";
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// MimeWriter manages an iovec for writing MIMEs to a file.
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class MimeWriter {
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public:
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static const int kIovCapacity = 30;
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static const size_t kMaxCrashChunkSize = 64;
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MimeWriter(int fd, const char* const mime_boundary);
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~MimeWriter();
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// Append boundary.
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virtual void AddBoundary();
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// Append end of file boundary.
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virtual void AddEnd();
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// Append key/value pair with specified sizes.
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virtual void AddPairData(const char* msg_type,
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size_t msg_type_size,
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const char* msg_data,
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size_t msg_data_size);
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// Append key/value pair.
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void AddPairString(const char* msg_type,
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const char* msg_data) {
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AddPairData(msg_type, my_strlen(msg_type), msg_data, my_strlen(msg_data));
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}
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// Append key/value pair, splitting value into chunks no larger than
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// |chunk_size|. |chunk_size| cannot be greater than |kMaxCrashChunkSize|.
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// The msg_type string will have a counter suffix to distinguish each chunk.
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virtual void AddPairDataInChunks(const char* msg_type,
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size_t msg_type_size,
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const char* msg_data,
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size_t msg_data_size,
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size_t chunk_size,
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bool strip_trailing_spaces);
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// Add binary file contents to be uploaded with the specified filename.
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virtual void AddFileContents(const char* filename_msg,
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uint8_t* file_data,
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size_t file_size);
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// Flush any pending iovecs to the output file.
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void Flush() {
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IGNORE_RET(sys_writev(fd_, iov_, iov_index_));
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iov_index_ = 0;
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}
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protected:
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void AddItem(const void* base, size_t size);
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// Minor performance trade-off for easier-to-maintain code.
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void AddString(const char* str) {
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AddItem(str, my_strlen(str));
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}
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void AddItemWithoutTrailingSpaces(const void* base, size_t size);
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struct kernel_iovec iov_[kIovCapacity];
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int iov_index_;
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// Output file descriptor.
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int fd_;
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const char* const mime_boundary_;
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DISALLOW_COPY_AND_ASSIGN(MimeWriter);
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};
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MimeWriter::MimeWriter(int fd, const char* const mime_boundary)
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: iov_index_(0),
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fd_(fd),
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mime_boundary_(mime_boundary) {
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}
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MimeWriter::~MimeWriter() {
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}
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void MimeWriter::AddBoundary() {
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AddString(mime_boundary_);
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AddString(g_rn);
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}
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void MimeWriter::AddEnd() {
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AddString(mime_boundary_);
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AddString(g_dashdash_msg);
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AddString(g_rn);
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}
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void MimeWriter::AddPairData(const char* msg_type,
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size_t msg_type_size,
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const char* msg_data,
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size_t msg_data_size) {
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AddString(g_form_data_msg);
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AddItem(msg_type, msg_type_size);
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AddString(g_quote_msg);
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AddString(g_rn);
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AddString(g_rn);
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AddItem(msg_data, msg_data_size);
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AddString(g_rn);
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}
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void MimeWriter::AddPairDataInChunks(const char* msg_type,
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size_t msg_type_size,
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const char* msg_data,
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size_t msg_data_size,
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size_t chunk_size,
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bool strip_trailing_spaces) {
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if (chunk_size > kMaxCrashChunkSize)
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return;
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unsigned i = 0;
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size_t done = 0, msg_length = msg_data_size;
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while (msg_length) {
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char num[kUint64StringSize];
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const unsigned num_len = my_uint_len(++i);
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my_uitos(num, i, num_len);
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size_t chunk_len = std::min(chunk_size, msg_length);
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AddString(g_form_data_msg);
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AddItem(msg_type, msg_type_size);
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AddItem(num, num_len);
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AddString(g_quote_msg);
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AddString(g_rn);
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AddString(g_rn);
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if (strip_trailing_spaces) {
|
||||
AddItemWithoutTrailingSpaces(msg_data + done, chunk_len);
|
||||
} else {
|
||||
AddItem(msg_data + done, chunk_len);
|
||||
}
|
||||
AddString(g_rn);
|
||||
AddBoundary();
|
||||
Flush();
|
||||
|
||||
done += chunk_len;
|
||||
msg_length -= chunk_len;
|
||||
}
|
||||
}
|
||||
|
||||
void MimeWriter::AddFileContents(const char* filename_msg, uint8_t* file_data,
|
||||
size_t file_size) {
|
||||
AddString(g_form_data_msg);
|
||||
AddString(filename_msg);
|
||||
AddString(g_rn);
|
||||
AddString(g_content_type_msg);
|
||||
AddString(g_rn);
|
||||
AddString(g_rn);
|
||||
AddItem(file_data, file_size);
|
||||
AddString(g_rn);
|
||||
}
|
||||
|
||||
void MimeWriter::AddItem(const void* base, size_t size) {
|
||||
// Check if the iovec is full and needs to be flushed to output file.
|
||||
if (iov_index_ == kIovCapacity) {
|
||||
Flush();
|
||||
}
|
||||
iov_[iov_index_].iov_base = const_cast<void*>(base);
|
||||
iov_[iov_index_].iov_len = size;
|
||||
++iov_index_;
|
||||
}
|
||||
|
||||
void MimeWriter::AddItemWithoutTrailingSpaces(const void* base, size_t size) {
|
||||
AddItem(base, LengthWithoutTrailingSpaces(static_cast<const char*>(base),
|
||||
size));
|
||||
}
|
||||
|
||||
|
||||
|
||||
void LoadDataFromFD(google_breakpad::PageAllocator& allocator,
|
||||
int fd, bool close_fd, uint8_t** file_data, size_t* size) {
|
||||
STAT_STRUCT st;
|
||||
if (FSTAT_FUNC(fd, &st) != 0) {
|
||||
static const char msg[] = "Cannot upload crash dump: stat failed\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
if (close_fd)
|
||||
IGNORE_RET(sys_close(fd));
|
||||
return;
|
||||
}
|
||||
|
||||
*file_data = reinterpret_cast<uint8_t*>(allocator.Alloc(st.st_size));
|
||||
if (!(*file_data)) {
|
||||
static const char msg[] = "Cannot upload crash dump: cannot alloc\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
if (close_fd)
|
||||
IGNORE_RET(sys_close(fd));
|
||||
return;
|
||||
}
|
||||
my_memset(*file_data, 0xf, st.st_size);
|
||||
|
||||
*size = st.st_size;
|
||||
int byte_read = sys_read(fd, *file_data, *size);
|
||||
if (byte_read == -1) {
|
||||
static const char msg[] = "Cannot upload crash dump: read failed\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
if (close_fd)
|
||||
IGNORE_RET(sys_close(fd));
|
||||
return;
|
||||
}
|
||||
|
||||
if (close_fd)
|
||||
IGNORE_RET(sys_close(fd));
|
||||
}
|
||||
|
||||
void LoadDataFromFile(google_breakpad::PageAllocator& allocator,
|
||||
const char* filename,
|
||||
int* fd, uint8_t** file_data, size_t* size) {
|
||||
// WARNING: this code runs in a compromised context. It may not call into
|
||||
// libc nor allocate memory normally.
|
||||
*fd = sys_open(filename, O_RDONLY, 0);
|
||||
*size = 0;
|
||||
|
||||
if (*fd < 0) {
|
||||
static const char msg[] = "Cannot upload crash dump: failed to open\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
return;
|
||||
}
|
||||
|
||||
LoadDataFromFD(allocator, *fd, true, file_data, size);
|
||||
}
|
||||
|
||||
// Spawn the appropriate upload process for the current OS:
|
||||
// - generic Linux invokes wget.
|
||||
// - ChromeOS invokes crash_reporter.
|
||||
// |dumpfile| is the path to the dump data file.
|
||||
// |mime_boundary| is only used on Linux.
|
||||
// |exe_buf| is only used on CrOS and is the crashing process' name.
|
||||
void ExecUploadProcessOrTerminate(const BreakpadInfo& info,
|
||||
const char* dumpfile,
|
||||
const char* mime_boundary,
|
||||
const char* exe_buf,
|
||||
google_breakpad::PageAllocator* allocator) {
|
||||
// The --header argument to wget looks like:
|
||||
// --header=Content-Type: multipart/form-data; boundary=XYZ
|
||||
// where the boundary has two fewer leading '-' chars
|
||||
static const char header_msg[] =
|
||||
"--header=Content-Type: multipart/form-data; boundary=";
|
||||
char* const header = reinterpret_cast<char*>(allocator->Alloc(
|
||||
sizeof(header_msg) - 1 + strlen(mime_boundary) - 2 + 1));
|
||||
memcpy(header, header_msg, sizeof(header_msg) - 1);
|
||||
memcpy(header + sizeof(header_msg) - 1, mime_boundary + 2,
|
||||
strlen(mime_boundary) - 2);
|
||||
// We grab the NUL byte from the end of |mime_boundary|.
|
||||
|
||||
// The --post-file argument to wget looks like:
|
||||
// --post-file=/tmp/...
|
||||
static const char post_file_msg[] = "--post-file=";
|
||||
char* const post_file = reinterpret_cast<char*>(allocator->Alloc(
|
||||
sizeof(post_file_msg) - 1 + strlen(dumpfile) + 1));
|
||||
memcpy(post_file, post_file_msg, sizeof(post_file_msg) - 1);
|
||||
memcpy(post_file + sizeof(post_file_msg) - 1, dumpfile, strlen(dumpfile));
|
||||
|
||||
static const char kWgetBinary[] = "/usr/bin/wget";
|
||||
const char* args[] = {
|
||||
kWgetBinary,
|
||||
header,
|
||||
post_file,
|
||||
// TODO(zcbenz): Enabling custom upload url.
|
||||
kUploadURL,
|
||||
"--timeout=10", // Set a timeout so we don't hang forever.
|
||||
"--tries=1", // Don't retry if the upload fails.
|
||||
"-O", // output reply to fd 3
|
||||
"/dev/fd/3",
|
||||
NULL,
|
||||
};
|
||||
static const char msg[] = "Cannot upload crash dump: cannot exec "
|
||||
"/usr/bin/wget\n";
|
||||
execve(args[0], const_cast<char**>(args), environ);
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
sys__exit(1);
|
||||
}
|
||||
|
||||
} // namespace
|
||||
|
||||
void HandleCrashDump(const BreakpadInfo& info) {
|
||||
int dumpfd;
|
||||
bool keep_fd = false;
|
||||
size_t dump_size;
|
||||
uint8_t* dump_data;
|
||||
google_breakpad::PageAllocator allocator;
|
||||
const char* exe_buf = NULL;
|
||||
|
||||
if (info.fd != -1) {
|
||||
// Dump is provided with an open FD.
|
||||
keep_fd = true;
|
||||
dumpfd = info.fd;
|
||||
|
||||
// The FD is pointing to the end of the file.
|
||||
// Rewind, we'll read the data next.
|
||||
if (lseek(dumpfd, 0, SEEK_SET) == -1) {
|
||||
static const char msg[] = "Cannot upload crash dump: failed to "
|
||||
"reposition minidump FD\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
IGNORE_RET(sys_close(dumpfd));
|
||||
return;
|
||||
}
|
||||
LoadDataFromFD(allocator, info.fd, false, &dump_data, &dump_size);
|
||||
} else {
|
||||
// Dump is provided with a path.
|
||||
keep_fd = false;
|
||||
LoadDataFromFile(allocator, info.filename, &dumpfd, &dump_data, &dump_size);
|
||||
}
|
||||
|
||||
// TODO(jcivelli): make log work when using FDs.
|
||||
#if defined(ADDRESS_SANITIZER)
|
||||
int logfd;
|
||||
size_t log_size;
|
||||
uint8_t* log_data;
|
||||
// Load the AddressSanitizer log into log_data.
|
||||
LoadDataFromFile(allocator, info.log_filename, &logfd, &log_data, &log_size);
|
||||
#endif
|
||||
|
||||
// We need to build a MIME block for uploading to the server. Since we are
|
||||
// going to fork and run wget, it needs to be written to a temp file.
|
||||
const int ufd = sys_open("/dev/urandom", O_RDONLY, 0);
|
||||
if (ufd < 0) {
|
||||
static const char msg[] = "Cannot upload crash dump because /dev/urandom"
|
||||
" is missing\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
return;
|
||||
}
|
||||
|
||||
static const char temp_file_template[] =
|
||||
"/tmp/chromium-upload-XXXXXXXXXXXXXXXX";
|
||||
char temp_file[sizeof(temp_file_template)];
|
||||
int temp_file_fd = -1;
|
||||
if (keep_fd) {
|
||||
temp_file_fd = dumpfd;
|
||||
// Rewind the destination, we are going to overwrite it.
|
||||
if (lseek(dumpfd, 0, SEEK_SET) == -1) {
|
||||
static const char msg[] = "Cannot upload crash dump: failed to "
|
||||
"reposition minidump FD (2)\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
IGNORE_RET(sys_close(dumpfd));
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
if (info.upload) {
|
||||
memcpy(temp_file, temp_file_template, sizeof(temp_file_template));
|
||||
|
||||
for (unsigned i = 0; i < 10; ++i) {
|
||||
uint64_t t;
|
||||
sys_read(ufd, &t, sizeof(t));
|
||||
write_uint64_hex(temp_file + sizeof(temp_file) - (16 + 1), t);
|
||||
|
||||
temp_file_fd = sys_open(temp_file, O_WRONLY | O_CREAT | O_EXCL, 0600);
|
||||
if (temp_file_fd >= 0)
|
||||
break;
|
||||
}
|
||||
|
||||
if (temp_file_fd < 0) {
|
||||
static const char msg[] = "Failed to create temporary file in /tmp: "
|
||||
"cannot upload crash dump\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
IGNORE_RET(sys_close(ufd));
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
temp_file_fd = sys_open(info.filename, O_WRONLY, 0600);
|
||||
if (temp_file_fd < 0) {
|
||||
static const char msg[] = "Failed to save crash dump: failed to open\n";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
IGNORE_RET(sys_close(ufd));
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// The MIME boundary is 28 hyphens, followed by a 64-bit nonce and a NUL.
|
||||
char mime_boundary[28 + 16 + 1];
|
||||
my_memset(mime_boundary, '-', 28);
|
||||
uint64_t boundary_rand;
|
||||
sys_read(ufd, &boundary_rand, sizeof(boundary_rand));
|
||||
write_uint64_hex(mime_boundary + 28, boundary_rand);
|
||||
mime_boundary[28 + 16] = 0;
|
||||
IGNORE_RET(sys_close(ufd));
|
||||
|
||||
// The MIME block looks like this:
|
||||
// BOUNDARY \r\n
|
||||
// Content-Disposition: form-data; name="prod" \r\n \r\n
|
||||
// Chrome_Linux \r\n
|
||||
// BOUNDARY \r\n
|
||||
// Content-Disposition: form-data; name="ver" \r\n \r\n
|
||||
// 1.2.3.4 \r\n
|
||||
// BOUNDARY \r\n
|
||||
//
|
||||
// zero or one:
|
||||
// Content-Disposition: form-data; name="ptime" \r\n \r\n
|
||||
// abcdef \r\n
|
||||
// BOUNDARY \r\n
|
||||
//
|
||||
// zero or one:
|
||||
// Content-Disposition: form-data; name="ptype" \r\n \r\n
|
||||
// abcdef \r\n
|
||||
// BOUNDARY \r\n
|
||||
//
|
||||
// zero or one:
|
||||
// Content-Disposition: form-data; name="lsb-release" \r\n \r\n
|
||||
// abcdef \r\n
|
||||
// BOUNDARY \r\n
|
||||
//
|
||||
// zero or one:
|
||||
// Content-Disposition: form-data; name="oom-size" \r\n \r\n
|
||||
// 1234567890 \r\n
|
||||
// BOUNDARY \r\n
|
||||
//
|
||||
// zero or more (up to CrashKeyStorage::num_entries = 64):
|
||||
// Content-Disposition: form-data; name=crash-key-name \r\n
|
||||
// crash-key-value \r\n
|
||||
// BOUNDARY \r\n
|
||||
//
|
||||
// Content-Disposition: form-data; name="dump"; filename="dump" \r\n
|
||||
// Content-Type: application/octet-stream \r\n \r\n
|
||||
// <dump contents>
|
||||
// \r\n BOUNDARY -- \r\n
|
||||
|
||||
MimeWriter writer(temp_file_fd, mime_boundary);
|
||||
{
|
||||
// TODO(zcbenz): Set version and product_name from JS API.
|
||||
std::string product_name("Atom-Shell");
|
||||
std::string version("0.1.0");
|
||||
|
||||
writer.AddBoundary();
|
||||
writer.AddPairString("prod", product_name.c_str());
|
||||
writer.AddBoundary();
|
||||
writer.AddPairString("ver", version.c_str());
|
||||
writer.AddBoundary();
|
||||
if (info.pid > 0) {
|
||||
char pid_value_buf[kUint64StringSize];
|
||||
uint64_t pid_value_len = my_uint64_len(info.pid);
|
||||
my_uint64tos(pid_value_buf, info.pid, pid_value_len);
|
||||
static const char pid_key_name[] = "pid";
|
||||
writer.AddPairData(pid_key_name, sizeof(pid_key_name) - 1,
|
||||
pid_value_buf, pid_value_len);
|
||||
writer.AddBoundary();
|
||||
}
|
||||
writer.Flush();
|
||||
}
|
||||
|
||||
if (info.process_start_time > 0) {
|
||||
struct kernel_timeval tv;
|
||||
if (!sys_gettimeofday(&tv, NULL)) {
|
||||
uint64_t time = kernel_timeval_to_ms(&tv);
|
||||
if (time > info.process_start_time) {
|
||||
time -= info.process_start_time;
|
||||
char time_str[kUint64StringSize];
|
||||
const unsigned time_len = my_uint64_len(time);
|
||||
my_uint64tos(time_str, time, time_len);
|
||||
|
||||
static const char process_time_msg[] = "ptime";
|
||||
writer.AddPairData(process_time_msg, sizeof(process_time_msg) - 1,
|
||||
time_str, time_len);
|
||||
writer.AddBoundary();
|
||||
writer.Flush();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (info.process_type_length) {
|
||||
writer.AddPairString("ptype", info.process_type);
|
||||
writer.AddBoundary();
|
||||
writer.Flush();
|
||||
}
|
||||
|
||||
if (info.distro_length) {
|
||||
static const char distro_msg[] = "lsb-release";
|
||||
writer.AddPairString(distro_msg, info.distro);
|
||||
writer.AddBoundary();
|
||||
writer.Flush();
|
||||
}
|
||||
|
||||
if (info.oom_size) {
|
||||
char oom_size_str[kUint64StringSize];
|
||||
const unsigned oom_size_len = my_uint64_len(info.oom_size);
|
||||
my_uint64tos(oom_size_str, info.oom_size, oom_size_len);
|
||||
static const char oom_size_msg[] = "oom-size";
|
||||
writer.AddPairData(oom_size_msg, sizeof(oom_size_msg) - 1,
|
||||
oom_size_str, oom_size_len);
|
||||
writer.AddBoundary();
|
||||
writer.Flush();
|
||||
}
|
||||
|
||||
if (info.crash_keys) {
|
||||
CrashKeyStorage::Iterator crash_key_iterator(*info.crash_keys);
|
||||
const CrashKeyStorage::Entry* entry;
|
||||
while ((entry = crash_key_iterator.Next())) {
|
||||
writer.AddPairString(entry->key, entry->value);
|
||||
writer.AddBoundary();
|
||||
writer.Flush();
|
||||
}
|
||||
}
|
||||
|
||||
writer.AddFileContents(g_dump_msg, dump_data, dump_size);
|
||||
#if defined(ADDRESS_SANITIZER)
|
||||
// Append a multipart boundary and the contents of the AddressSanitizer log.
|
||||
writer.AddBoundary();
|
||||
writer.AddFileContents(g_log_msg, log_data, log_size);
|
||||
#endif
|
||||
writer.AddEnd();
|
||||
writer.Flush();
|
||||
|
||||
IGNORE_RET(sys_close(temp_file_fd));
|
||||
|
||||
if (!info.upload)
|
||||
return;
|
||||
|
||||
const pid_t child = sys_fork();
|
||||
if (!child) {
|
||||
// Spawned helper process.
|
||||
//
|
||||
// This code is called both when a browser is crashing (in which case,
|
||||
// nothing really matters any more) and when a renderer/plugin crashes, in
|
||||
// which case we need to continue.
|
||||
//
|
||||
// Since we are a multithreaded app, if we were just to fork(), we might
|
||||
// grab file descriptors which have just been created in another thread and
|
||||
// hold them open for too long.
|
||||
//
|
||||
// Thus, we have to loop and try and close everything.
|
||||
const int fd = sys_open("/proc/self/fd", O_DIRECTORY | O_RDONLY, 0);
|
||||
if (fd < 0) {
|
||||
for (unsigned i = 3; i < 8192; ++i)
|
||||
IGNORE_RET(sys_close(i));
|
||||
} else {
|
||||
google_breakpad::DirectoryReader reader(fd);
|
||||
const char* name;
|
||||
while (reader.GetNextEntry(&name)) {
|
||||
int i;
|
||||
if (my_strtoui(&i, name) && i > 2 && i != fd)
|
||||
IGNORE_RET(sys_close(i));
|
||||
reader.PopEntry();
|
||||
}
|
||||
|
||||
IGNORE_RET(sys_close(fd));
|
||||
}
|
||||
|
||||
IGNORE_RET(sys_setsid());
|
||||
|
||||
// Leave one end of a pipe in the upload process and watch for it getting
|
||||
// closed by the upload process exiting.
|
||||
int fds[2];
|
||||
if (sys_pipe(fds) >= 0) {
|
||||
const pid_t upload_child = sys_fork();
|
||||
if (!upload_child) {
|
||||
// Upload process.
|
||||
IGNORE_RET(sys_close(fds[0]));
|
||||
IGNORE_RET(sys_dup2(fds[1], 3));
|
||||
ExecUploadProcessOrTerminate(info, temp_file, mime_boundary, exe_buf,
|
||||
&allocator);
|
||||
}
|
||||
|
||||
// Helper process.
|
||||
if (upload_child > 0) {
|
||||
IGNORE_RET(sys_close(fds[1]));
|
||||
char id_buf[17]; // Crash report IDs are expected to be 16 chars.
|
||||
ssize_t len = -1;
|
||||
// Upload should finish in about 10 seconds. Add a few more 500 ms
|
||||
// internals to account for process startup time.
|
||||
for (size_t wait_count = 0; wait_count < 24; ++wait_count) {
|
||||
struct kernel_pollfd poll_fd;
|
||||
poll_fd.fd = fds[0];
|
||||
poll_fd.events = POLLIN | POLLPRI | POLLERR;
|
||||
int ret = sys_poll(&poll_fd, 1, 500);
|
||||
if (ret < 0) {
|
||||
// Error
|
||||
break;
|
||||
} else if (ret > 0) {
|
||||
// There is data to read.
|
||||
len = HANDLE_EINTR(sys_read(fds[0], id_buf, sizeof(id_buf) - 1));
|
||||
break;
|
||||
}
|
||||
// ret == 0 -> timed out, continue waiting.
|
||||
}
|
||||
if (len > 0) {
|
||||
// Write crash dump id to stderr.
|
||||
id_buf[len] = 0;
|
||||
static const char msg[] = "\nCrash dump id: ";
|
||||
WriteLog(msg, sizeof(msg) - 1);
|
||||
WriteLog(id_buf, my_strlen(id_buf));
|
||||
WriteLog("\n", 1);
|
||||
}
|
||||
if (sys_waitpid(upload_child, NULL, WNOHANG) == 0) {
|
||||
// Upload process is still around, kill it.
|
||||
sys_kill(upload_child, SIGKILL);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Helper process.
|
||||
IGNORE_RET(sys_unlink(info.filename));
|
||||
#if defined(ADDRESS_SANITIZER)
|
||||
IGNORE_RET(sys_unlink(info.log_filename));
|
||||
#endif
|
||||
IGNORE_RET(sys_unlink(temp_file));
|
||||
sys__exit(0);
|
||||
}
|
||||
|
||||
// Main browser process.
|
||||
if (child <= 0)
|
||||
return;
|
||||
(void) HANDLE_EINTR(sys_waitpid(child, NULL, 0));
|
||||
}
|
||||
|
||||
size_t WriteLog(const char* buf, size_t nbytes) {
|
||||
return sys_write(2, buf, nbytes);
|
||||
}
|
||||
|
||||
} // namespace crash_reporter
|
44
common/crash_reporter/linux/crash_dump_handler.h
Normal file
44
common/crash_reporter/linux/crash_dump_handler.h
Normal file
|
@ -0,0 +1,44 @@
|
|||
// Copyright (c) 2014 GitHub, Inc. All rights reserved.
|
||||
// Copyright (c) 2013 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.
|
||||
|
||||
#ifndef ATOM_COMMON_CRASH_REPORTER_LINUX_CRASH_DUMP_HANDLER_H_
|
||||
#define ATOM_COMMON_CRASH_REPORTER_LINUX_CRASH_DUMP_HANDLER_H_
|
||||
|
||||
#include "base/basictypes.h"
|
||||
#include "vendor/breakpad/src/common/simple_string_dictionary.h"
|
||||
|
||||
namespace crash_reporter {
|
||||
|
||||
typedef google_breakpad::NonAllocatingMap<256, 256, 64> CrashKeyStorage;
|
||||
|
||||
// BreakpadInfo describes a crash report.
|
||||
// The minidump information can either be contained in a file descriptor (fd) or
|
||||
// in a file (whose path is in filename).
|
||||
struct BreakpadInfo {
|
||||
int fd; // File descriptor to the Breakpad dump data.
|
||||
const char* filename; // Path to the Breakpad dump data.
|
||||
#if defined(ADDRESS_SANITIZER)
|
||||
const char* log_filename; // Path to the ASan log file.
|
||||
const char* asan_report_str; // ASan report.
|
||||
unsigned asan_report_length; // Length of |asan_report_length|.
|
||||
#endif
|
||||
const char* process_type; // Process type, e.g. "renderer".
|
||||
unsigned process_type_length; // Length of |process_type|.
|
||||
const char* distro; // Linux distro string.
|
||||
unsigned distro_length; // Length of |distro|.
|
||||
bool upload; // Whether to upload or save crash dump.
|
||||
uint64_t process_start_time; // Uptime of the crashing process.
|
||||
size_t oom_size; // Amount of memory requested if OOM.
|
||||
uint64_t pid; // PID where applicable.
|
||||
CrashKeyStorage* crash_keys;
|
||||
};
|
||||
|
||||
void HandleCrashDump(const BreakpadInfo& info);
|
||||
|
||||
size_t WriteLog(const char* buf, size_t nbytes);
|
||||
|
||||
} // namespace crash_reporter
|
||||
|
||||
#endif // ATOM_COMMON_CRASH_REPORTER_LINUX_CRASH_DUMP_HANDLER_H_
|
Loading…
Reference in a new issue