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// Copyright 2017 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 "client/crashpad_client.h"
#include <lib/fdio/spawn.h>
#include <lib/zx/channel.h>
#include <lib/zx/job.h>
#include <lib/zx/process.h>
#include <zircon/processargs.h>
#include "base/fuchsia/fuchsia_logging.h"
#include "base/logging.h"
#include "base/strings/stringprintf.h"
#include "client/client_argv_handling.h"
namespace crashpad {
CrashpadClient::CrashpadClient() {}
CrashpadClient::~CrashpadClient() {}
bool CrashpadClient::StartHandler(
const base::FilePath& handler,
const base::FilePath& database,
const base::FilePath& metrics_dir,
const std::string& url,
const std::map<std::string, std::string>& annotations,
const std::vector<std::string>& arguments,
bool restartable,
bool asynchronous_start) {
DCHECK_EQ(restartable, false); // Not used on Fuchsia.
DCHECK_EQ(asynchronous_start, false); // Not used on Fuchsia.
std::vector<std::string> argv_strings = BuildHandlerArgvStrings(
handler, database, metrics_dir, url, annotations, arguments);
std::vector<const char*> argv;
StringVectorToCStringVector(argv_strings, &argv);
// Set up handles to send to the spawned process:
// 0. PA_USER0 job
// 1. PA_USER0 exception channel
//
// Currently it is assumed that this process's default job handle is the
// exception channel that should be monitored. In the future, it might be
// useful for this to be configurable by the client.
zx::job job;
zx_status_t status =
zx::job::default_job()->duplicate(ZX_RIGHT_SAME_RIGHTS, &job);
if (status != ZX_OK) {
ZX_LOG(ERROR, status) << "zx_handle_duplicate";
return false;
}
zx::channel exception_channel;
status = job.create_exception_channel(0, &exception_channel);
if (status != ZX_OK) {
ZX_LOG(ERROR, status) << "zx_task_create_exception_channel";
return false;
}
constexpr size_t kActionCount = 2;
fdio_spawn_action_t actions[] = {
{.action = FDIO_SPAWN_ACTION_ADD_HANDLE,
.h = {.id = PA_HND(PA_USER0, 0), .handle = job.release()}},
{.action = FDIO_SPAWN_ACTION_ADD_HANDLE,
.h = {.id = PA_HND(PA_USER0, 1), .handle = exception_channel.release()}},
};
char error_message[FDIO_SPAWN_ERR_MSG_MAX_LENGTH];
zx::process child;
// TODO(scottmg): https://crashpad.chromium.org/bug/196, FDIO_SPAWN_CLONE_ALL
// is useful during bringup, but should probably be made minimal for real
// usage.
status = fdio_spawn_etc(ZX_HANDLE_INVALID,
FDIO_SPAWN_CLONE_ALL,
argv[0],
argv.data(),
nullptr,
kActionCount,
actions,
child.reset_and_get_address(),
error_message);
if (status != ZX_OK) {
ZX_LOG(ERROR, status) << "fdio_spawn_etc: " << error_message;
return false;
}
return true;
}
} // namespace crashpad