Copy Crashpad into the Chrome tree instead of importing it via DEPS

third_party/crashpad/crashpad/util/mach/mach_extensions.cc

Index: third_party/crashpad/crashpad/util/mach/mach_extensions.cc
diff --git a/third_party/crashpad/crashpad/util/mach/mach_extensions.cc b/third_party/crashpad/crashpad/util/mach/mach_extensions.cc
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index 0000000000000000000000000000000000000000..64552f1cba65ce1d7edad926e40cc58dc289b379
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util/mach/mach_extensions.h"
+
+#include <AvailabilityMacros.h>
+#include <pthread.h>
+#include <servers/bootstrap.h>
+
+#include "base/mac/mach_logging.h"
+#include "util/mac/mac_util.h"
+
+namespace {
+
+// This forms the internal implementation for BootstrapCheckIn() and
+// BootstrapLookUp(), which follow the same logic aside from the routine called
+// and the right type returned.
+
+struct BootstrapCheckInTraits {
+  using Type = base::mac::ScopedMachReceiveRight;
+  static kern_return_t Call(mach_port_t bootstrap_port,
+                            const char* service_name,
+                            mach_port_t* service_port) {
+    return bootstrap_check_in(bootstrap_port, service_name, service_port);
+  }
+  static const char kName[];
+};
+const char BootstrapCheckInTraits::kName[] = "bootstrap_check_in";
+
+struct BootstrapLookUpTraits {
+  using Type = base::mac::ScopedMachSendRight;
+  static kern_return_t Call(mach_port_t bootstrap_port,
+                            const char* service_name,
+                            mach_port_t* service_port) {
+    return bootstrap_look_up(bootstrap_port, service_name, service_port);
+  }
+  static const char kName[];
+};
+const char BootstrapLookUpTraits::kName[] = "bootstrap_look_up";
+
+template <typename Traits>
+typename Traits::Type BootstrapCheckInOrLookUp(
+    const std::string& service_name) {
+  // bootstrap_check_in() and bootstrap_look_up() silently truncate service
+  // names longer than BOOTSTRAP_MAX_NAME_LEN. This check ensures that the name
+  // will not be truncated.
+  if (service_name.size() >= BOOTSTRAP_MAX_NAME_LEN) {
+    LOG(ERROR) << Traits::kName << " " << service_name << ": name too long";
+    return typename Traits::Type(MACH_PORT_NULL);
+  }
+
+  mach_port_t service_port;
+  kern_return_t kr = Traits::Call(bootstrap_port,
+                                  service_name.c_str(),
+                                  &service_port);
+  if (kr != BOOTSTRAP_SUCCESS) {
+    BOOTSTRAP_LOG(ERROR, kr) << Traits::kName << " " << service_name;
+    service_port = MACH_PORT_NULL;
+  }
+
+  return typename Traits::Type(service_port);
+}
+
+}  // namespace
+
+namespace crashpad {
+
+thread_t MachThreadSelf() {
+  // The pthreads library keeps its own copy of the thread port. Using it does
+  // not increment its reference count.
+  return pthread_mach_thread_np(pthread_self());
+}
+
+mach_port_t NewMachPort(mach_port_right_t right) {
+  mach_port_t port = MACH_PORT_NULL;
+  kern_return_t kr = mach_port_allocate(mach_task_self(), right, &port);
+  MACH_LOG_IF(ERROR, kr != KERN_SUCCESS, kr) << "mach_port_allocate";
+  return port;
+}
+
+exception_mask_t ExcMaskAll() {
+  // This is necessary because of the way that the kernel validates
+  // exception_mask_t arguments to
+  // {host,task,thread}_{get,set,swap}_exception_ports(). It is strict,
+  // rejecting attempts to operate on any bits that it does not recognize. See
+  // 10.9.4 xnu-2422.110.17/osfmk/mach/ipc_host.c and
+  // xnu-2422.110.17/osfmk/mach/ipc_tt.c.
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9
+  const int mac_os_x_minor_version = MacOSXMinorVersion();
+#endif
+
+  // See 10.6.8 xnu-1504.15.3/osfmk/mach/exception_types.h. 10.7 uses the same
+  // definition as 10.6. See 10.7.5 xnu-1699.32.7/osfmk/mach/exception_types.h
+  const exception_mask_t kExcMaskAll_10_6 =
+      EXC_MASK_BAD_ACCESS |
+      EXC_MASK_BAD_INSTRUCTION |
+      EXC_MASK_ARITHMETIC |
+      EXC_MASK_EMULATION |
+      EXC_MASK_SOFTWARE |
+      EXC_MASK_BREAKPOINT |
+      EXC_MASK_SYSCALL |
+      EXC_MASK_MACH_SYSCALL |
+      EXC_MASK_RPC_ALERT |
+      EXC_MASK_MACHINE;
+#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_8
+  if (mac_os_x_minor_version < 8) {
+    return kExcMaskAll_10_6;
+  }
+#endif
+
+  // 10.8 added EXC_MASK_RESOURCE. See 10.8.5
+  // xnu-2050.48.11/osfmk/mach/exception_types.h.
+  const exception_mask_t kExcMaskAll_10_8 =
+      kExcMaskAll_10_6 | EXC_MASK_RESOURCE;
+#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9
+  if (mac_os_x_minor_version < 9) {
+    return kExcMaskAll_10_8;
+  }
+#endif
+
+  // 10.9 added EXC_MASK_GUARD. See 10.9.4
+  // xnu-2422.110.17/osfmk/mach/exception_types.h.
+  const exception_mask_t kExcMaskAll_10_9 = kExcMaskAll_10_8 | EXC_MASK_GUARD;
+  return kExcMaskAll_10_9;
+}
+
+exception_mask_t ExcMaskValid() {
+  const exception_mask_t kExcMaskValid_10_6 = ExcMaskAll() | EXC_MASK_CRASH;
+#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_11
+  if (MacOSXMinorVersion() < 11) {
+    return kExcMaskValid_10_6;
+  }
+#endif
+
+  // 10.11 added EXC_MASK_CORPSE_NOTIFY. See 10.11 <mach/exception_types.h>.
+  const exception_mask_t kExcMaskValid_10_11 =
+      kExcMaskValid_10_6 | EXC_MASK_CORPSE_NOTIFY;
+  return kExcMaskValid_10_11;
+}
+
+base::mac::ScopedMachReceiveRight BootstrapCheckIn(
+    const std::string& service_name) {
+  return BootstrapCheckInOrLookUp<BootstrapCheckInTraits>(service_name);
+}
+
+base::mac::ScopedMachSendRight BootstrapLookUp(
+    const std::string& service_name) {
+  return BootstrapCheckInOrLookUp<BootstrapLookUpTraits>(service_name);
+}
+
+base::mac::ScopedMachSendRight SystemCrashReporterHandler() {
+  return BootstrapLookUp("com.apple.ReportCrash");
+}
+
+}  // namespace crashpad