Add BootstrapCheckIn and its test

util/mach/bootstrap.cc

Index: util/mach/bootstrap.cc
diff --git a/util/mach/bootstrap.cc b/util/mach/bootstrap.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c987591c61d210a4041b111c788da37f1be59c79
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+++ b/util/mach/bootstrap.cc
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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/bootstrap.h"
+
+#include <AvailabilityMacros.h>
+#include <servers/bootstrap.h>
+
+#include "base/basictypes.h"
+#include "base/mac/scoped_mach_port.h"
+#include "util/mac/mac_util.h"
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_5
+namespace {
+
+// Wraps bootstrap_register to avoid the deprecation warning. It needs to be
+// used on 10.5.
+kern_return_t BootstrapRegister(mach_port_t bp,
+                                name_t service_name,
+                                mach_port_t sp) {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+  return bootstrap_register(bp, service_name, sp);
+#pragma GCC diagnostic pop
+}
+
+}  // namespace
+#endif
+
+namespace crashpad {
+
+kern_return_t BootstrapCheckIn(mach_port_t bp,
+                               const std::string& service_name,
+                               mach_port_t* service_port) {
+  // bootstrap_check_in (until the 10.6 SDK) and bootstrap_register (all SDKs)
+  // are declared with a char* argument, but they don’t actually modify the char
+  // data, so this is safe.
+  char* service_name_mutable = const_cast<char*>(service_name.c_str());
+
+  kern_return_t kr = bootstrap_check_in(bp, service_name_mutable, service_port);
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_5
+  if (kr == BOOTSTRAP_UNKNOWN_SERVICE && MacOSXMinorVersion() <= 5) {
+    // This code path should only be entered on 10.5 or earlier.
+    mach_port_t local_service_port;
+    kr = mach_port_allocate(
+        mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &local_service_port);
+    if (kr != KERN_SUCCESS) {
+      return kr;
+    }
+    base::mac::ScopedMachReceiveRight service_port_receive_right_owner(
+        local_service_port);
+
+    kr = mach_port_insert_right(mach_task_self(),
+                                local_service_port,
+                                local_service_port,
+                                MACH_MSG_TYPE_MAKE_SEND);
+    if (kr != KERN_SUCCESS) {
+      return kr;
+    }
+    base::mac::ScopedMachSendRight service_port_send_right_owner(
+        local_service_port);
+
+    kr = BootstrapRegister(bp, service_name_mutable, local_service_port);
+    if (kr != BOOTSTRAP_SUCCESS) {
+      return kr;
+    }
+
+    ignore_result(service_port_receive_right_owner.release());
+    *service_port = local_service_port;
+  }
+#endif
+
+  return kr;
+}
+
+}  // namespace crashpad