Upstream native crash handling changes for Android.

chrome/browser/crash_handler_host_posix.cc

 // Copyright (c) 2011 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.
 
-#include "chrome/browser/crash_handler_host_linux.h"
+#include "chrome/browser/crash_handler_host_posix.h"
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <sys/socket.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/eintr_wrapper.h"
 #include "base/file_path.h"
 #include "base/format_macros.h"
 #include "base/linux_util.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/rand_util.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/threading/thread.h"
 #include "breakpad/src/client/linux/handler/exception_handler.h"
 #include "breakpad/src/client/linux/minidump_writer/linux_dumper.h"
 #include "breakpad/src/client/linux/minidump_writer/minidump_writer.h"
 #include "chrome/app/breakpad_linux.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/env_vars.h"
 #include "content/public/browser/browser_thread.h"
 
+#if defined(OS_ANDROID)
+#include <sys/linux-syscalls.h>
+
+#define SYS_read __NR_read
+#endif
+
 using content::BrowserThread;
 using google_breakpad::ExceptionHandler;
 
 namespace {
 
 // The length of the control message:
 const unsigned kControlMsgSize =
     CMSG_SPACE(2*sizeof(int)) + CMSG_SPACE(sizeof(struct ucred));
 // The length of the regular payload:
 const unsigned kCrashContextSize = sizeof(ExceptionHandler::CrashContext);
 
 // Handles the crash dump and frees the allocated BreakpadInfo struct.
-void CrashDumpTask(CrashHandlerHostLinux* handler, BreakpadInfo* info) {
+void CrashDumpTask(CrashHandlerHostPosix* handler, BreakpadInfo* info) {
   if (handler->IsShuttingDown())
     return;
 
   HandleCrashDump(*info);
   delete[] info->filename;
   delete[] info->process_type;
   delete[] info->crash_url;
   delete[] info->guid;
   delete[] info->distro;
   delete info;
 }
 
 }  // namespace
 
-// Since classes derived from CrashHandlerHostLinux are singletons, it's only
+// Since classes derived from CrashHandlerHostPosix are singletons, it's only
 // destroyed at the end of the processes lifetime, which is greater in span than
 // the lifetime of the IO message loop. Thus, all calls to base::Bind() use
 // non-refcounted pointers.
 
-CrashHandlerHostLinux::CrashHandlerHostLinux()
+CrashHandlerHostPosix::CrashHandlerHostPosix()
     : shutting_down_(false) {
   int fds[2];
   // We use SOCK_SEQPACKET rather than SOCK_DGRAM to prevent the process from
   // sending datagrams to other sockets on the system. The sandbox may prevent
   // the process from calling socket() to create new sockets, but it'll still
   // inherit some sockets. With PF_UNIX+SOCK_DGRAM, it can call sendmsg to send
   // a datagram to any (abstract) socket on the same system. With
   // SOCK_SEQPACKET, this is prevented.
   CHECK_EQ(socketpair(AF_UNIX, SOCK_SEQPACKET, 0, fds), 0);
   static const int on = 1;
 
   // Enable passcred on the server end of the socket
   CHECK_EQ(setsockopt(fds[1], SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)), 0);
 
   process_socket_ = fds[0];
   browser_socket_ = fds[1];
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      base::Bind(&CrashHandlerHostLinux::Init, base::Unretained(this)));
+      base::Bind(&CrashHandlerHostPosix::Init, base::Unretained(this)));
 }
 
-CrashHandlerHostLinux::~CrashHandlerHostLinux() {
+CrashHandlerHostPosix::~CrashHandlerHostPosix() {
   HANDLE_EINTR(close(process_socket_));
   HANDLE_EINTR(close(browser_socket_));
 }
 
-void CrashHandlerHostLinux::Init() {
+void CrashHandlerHostPosix::Init() {
   MessageLoopForIO* ml = MessageLoopForIO::current();
   CHECK(ml->WatchFileDescriptor(
       browser_socket_, true /* persistent */,
       MessageLoopForIO::WATCH_READ,
       &file_descriptor_watcher_, this));
   ml->AddDestructionObserver(this);
 }
 
-void CrashHandlerHostLinux::InitCrashUploaderThread() {
+void CrashHandlerHostPosix::InitCrashUploaderThread() {
   SetProcessType();
   uploader_thread_.reset(
       new base::Thread(std::string(process_type_ + "_crash_uploader").c_str()));
   uploader_thread_->Start();
 }
 
-void CrashHandlerHostLinux::OnFileCanWriteWithoutBlocking(int fd) {
+void CrashHandlerHostPosix::OnFileCanWriteWithoutBlocking(int fd) {
   DCHECK(false);
 }
 
-void CrashHandlerHostLinux::OnFileCanReadWithoutBlocking(int fd) {
+void CrashHandlerHostPosix::OnFileCanReadWithoutBlocking(int fd) {
   DCHECK_EQ(fd, browser_socket_);
 
   // A process has crashed and has signaled us by writing a datagram
   // to the death signal socket. The datagram contains the crash context needed
   // for writing the minidump as well as a file descriptor and a credentials
   // block so that they can't lie about their pid.
 
   const size_t kIovSize = 7;
   struct msghdr msg = {0};
   struct iovec iov[kIovSize];
@@ skipping 179 matching lines @@
   info->process_type = process_type_str;
 
   info->crash_url_length = strlen(crash_url);
   info->crash_url = crash_url;
 
   info->guid_length = strlen(guid);
   info->guid = guid;
 
   info->distro_length = strlen(distro);
   info->distro = distro;
-
+#if defined(OS_ANDROID)
+  // Nothing gets uploaded in android.
+  info->upload = false;
+#else
   info->upload = (getenv(env_vars::kHeadless) == NULL);
+#endif
   info->process_start_time = uptime;
 
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
-      base::Bind(&CrashHandlerHostLinux::WriteDumpFile,
+      base::Bind(&CrashHandlerHostPosix::WriteDumpFile,
                  base::Unretained(this),
                  info,
                  crashing_pid,
                  crash_context,
                  signal_fd));
 }
 
-void CrashHandlerHostLinux::WriteDumpFile(BreakpadInfo* info,
+void CrashHandlerHostPosix::WriteDumpFile(BreakpadInfo* info,
                                           pid_t crashing_pid,
                                           char* crash_context,
                                           int signal_fd) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   FilePath dumps_path("/tmp");
   PathService::Get(base::DIR_TEMP, &dumps_path);
   if (!info->upload)
     PathService::Get(chrome::DIR_CRASH_DUMPS, &dumps_path);
   const uint64 rand = base::RandUint64();
   const std::string minidump_filename =
       base::StringPrintf("%s/chromium-%s-minidump-%016" PRIx64 ".dmp",
                          dumps_path.value().c_str(),
                          process_type_.c_str(),
                          rand);
   if (!google_breakpad::WriteMinidump(minidump_filename.c_str(),
                                       crashing_pid, crash_context,
                                       kCrashContextSize)) {
     LOG(ERROR) << "Failed to write crash dump for pid " << crashing_pid;
   }
   delete[] crash_context;
 
   // Freed in CrashDumpTask();
-  char* minidump_filename_str = new char[minidump_filename.length() + 1];
+  unsigned minidump_filename_str_len = minidump_filename.length() + 1;
+  char* minidump_filename_str = new char[minidump_filename_str_len];
   minidump_filename.copy(minidump_filename_str, minidump_filename.length());
   minidump_filename_str[minidump_filename.length()] = '\0';
   info->filename = minidump_filename_str;
+  info->filename_length = minidump_filename_str_len;
+  info->pid = crashing_pid;
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      base::Bind(&CrashHandlerHostLinux::QueueCrashDumpTask,
+      base::Bind(&CrashHandlerHostPosix::QueueCrashDumpTask,
                  base::Unretained(this),
                  info,
                  signal_fd));
 }
 
-void CrashHandlerHostLinux::QueueCrashDumpTask(BreakpadInfo* info,
+void CrashHandlerHostPosix::QueueCrashDumpTask(BreakpadInfo* info,
                                                int signal_fd) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // Send the done signal to the process: it can exit now.
   struct msghdr msg = {0};
   struct iovec done_iov;
   done_iov.iov_base = const_cast<char*>("\x42");
   done_iov.iov_len = 1;
   msg.msg_iov = &done_iov;
   msg.msg_iovlen = 1;
 
   HANDLE_EINTR(sendmsg(signal_fd, &msg, MSG_DONTWAIT | MSG_NOSIGNAL));
   HANDLE_EINTR(close(signal_fd));
 
   uploader_thread_->message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&CrashDumpTask, base::Unretained(this), info));
 }
 
-void CrashHandlerHostLinux::WillDestroyCurrentMessageLoop() {
+void CrashHandlerHostPosix::WillDestroyCurrentMessageLoop() {
   file_descriptor_watcher_.StopWatchingFileDescriptor();
 
   // If we are quitting and there are crash dumps in the queue, turn them into
   // no-ops.
   shutting_down_ = true;
   uploader_thread_->Stop();
 }
 
-bool CrashHandlerHostLinux::IsShuttingDown() const {
+bool CrashHandlerHostPosix::IsShuttingDown() const {
   return shutting_down_;
 }
 
-ExtensionCrashHandlerHostLinux::ExtensionCrashHandlerHostLinux() {
+ExtensionCrashHandlerHostPosix::ExtensionCrashHandlerHostPosix() {
   InitCrashUploaderThread();
 }
 
-ExtensionCrashHandlerHostLinux::~ExtensionCrashHandlerHostLinux() {
+ExtensionCrashHandlerHostPosix::~ExtensionCrashHandlerHostPosix() {
 }
 
-void ExtensionCrashHandlerHostLinux::SetProcessType() {
+void ExtensionCrashHandlerHostPosix::SetProcessType() {
   process_type_ = "extension";
 }
 
 // static
-ExtensionCrashHandlerHostLinux* ExtensionCrashHandlerHostLinux::GetInstance() {
-  return Singleton<ExtensionCrashHandlerHostLinux>::get();
+ExtensionCrashHandlerHostPosix* ExtensionCrashHandlerHostPosix::GetInstance() {
+  return Singleton<ExtensionCrashHandlerHostPosix>::get();
 }
 
-GpuCrashHandlerHostLinux::GpuCrashHandlerHostLinux() {
+GpuCrashHandlerHostPosix::GpuCrashHandlerHostPosix() {
   InitCrashUploaderThread();
 }
 
-GpuCrashHandlerHostLinux::~GpuCrashHandlerHostLinux() {
+GpuCrashHandlerHostPosix::~GpuCrashHandlerHostPosix() {
 }
 
-void GpuCrashHandlerHostLinux::SetProcessType() {
+void GpuCrashHandlerHostPosix::SetProcessType() {
   process_type_ = "gpu-process";
 }
 
 // static
-GpuCrashHandlerHostLinux* GpuCrashHandlerHostLinux::GetInstance() {
-  return Singleton<GpuCrashHandlerHostLinux>::get();
+GpuCrashHandlerHostPosix* GpuCrashHandlerHostPosix::GetInstance() {
+  return Singleton<GpuCrashHandlerHostPosix>::get();
 }
 
-PluginCrashHandlerHostLinux::PluginCrashHandlerHostLinux() {
+PluginCrashHandlerHostPosix::PluginCrashHandlerHostPosix() {
   InitCrashUploaderThread();
 }
 
-PluginCrashHandlerHostLinux::~PluginCrashHandlerHostLinux() {
+PluginCrashHandlerHostPosix::~PluginCrashHandlerHostPosix() {
 }
 
-void PluginCrashHandlerHostLinux::SetProcessType() {
+void PluginCrashHandlerHostPosix::SetProcessType() {
   process_type_ = "plugin";
 }
 
 // static
-PluginCrashHandlerHostLinux* PluginCrashHandlerHostLinux::GetInstance() {
-  return Singleton<PluginCrashHandlerHostLinux>::get();
+PluginCrashHandlerHostPosix* PluginCrashHandlerHostPosix::GetInstance() {
+  return Singleton<PluginCrashHandlerHostPosix>::get();
 }
 
-PpapiCrashHandlerHostLinux::PpapiCrashHandlerHostLinux() {
+PpapiCrashHandlerHostPosix::PpapiCrashHandlerHostPosix() {
   InitCrashUploaderThread();
 }
 
-PpapiCrashHandlerHostLinux::~PpapiCrashHandlerHostLinux() {
+PpapiCrashHandlerHostPosix::~PpapiCrashHandlerHostPosix() {
 }
 
-void PpapiCrashHandlerHostLinux::SetProcessType() {
+void PpapiCrashHandlerHostPosix::SetProcessType() {
   process_type_ = "ppapi";
 }
 
 // static
-PpapiCrashHandlerHostLinux* PpapiCrashHandlerHostLinux::GetInstance() {
-  return Singleton<PpapiCrashHandlerHostLinux>::get();
+PpapiCrashHandlerHostPosix* PpapiCrashHandlerHostPosix::GetInstance() {
+  return Singleton<PpapiCrashHandlerHostPosix>::get();
 }
 
-RendererCrashHandlerHostLinux::RendererCrashHandlerHostLinux() {
+RendererCrashHandlerHostPosix::RendererCrashHandlerHostPosix() {
   InitCrashUploaderThread();
 }
 
-RendererCrashHandlerHostLinux::~RendererCrashHandlerHostLinux() {
+RendererCrashHandlerHostPosix::~RendererCrashHandlerHostPosix() {
 }
 
-void RendererCrashHandlerHostLinux::SetProcessType() {
+void RendererCrashHandlerHostPosix::SetProcessType() {
   process_type_ = "renderer";
 }
 
 // static
-RendererCrashHandlerHostLinux* RendererCrashHandlerHostLinux::GetInstance() {
-  return Singleton<RendererCrashHandlerHostLinux>::get();
+RendererCrashHandlerHostPosix* RendererCrashHandlerHostPosix::GetInstance() {
+  return Singleton<RendererCrashHandlerHostPosix>::get();
 }