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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_NACL_ZYGOTE_NACL_FORK_DELEGATE_LINUX_H_
#define COMPONENTS_NACL_ZYGOTE_NACL_FORK_DELEGATE_LINUX_H_
#include <memory>
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "content/public/common/zygote/zygote_fork_delegate_linux.h"
namespace base {
struct LaunchOptions;
}
namespace nacl {
// Appends any ZygoteForkDelegate instances needed by NaCl to |*delegates|.
void AddNaClZygoteForkDelegates(
std::vector<std::unique_ptr<content::ZygoteForkDelegate>>* delegates);
// The NaClForkDelegate is created during Chrome linux zygote initialization,
// and provides "fork()" functionality with NaCl specific process
// characteristics (specifically address space layout) as an alternative to
// forking the zygote. A new delegate is passed in as an argument to
// ZygoteMain().
class NaClForkDelegate : public content::ZygoteForkDelegate {
public:
NaClForkDelegate();
NaClForkDelegate(const NaClForkDelegate&) = delete;
NaClForkDelegate& operator=(const NaClForkDelegate&) = delete;
~NaClForkDelegate() override;
void Init(int sandboxdesc, bool enable_layer1_sandbox) override;
void InitialUMA(std::string* uma_name,
int* uma_sample,
int* uma_boundary_value) override;
bool CanHelp(const std::string& process_type,
std::string* uma_name,
int* uma_sample,
int* uma_boundary_value) override;
pid_t Fork(const std::string& process_type,
const std::vector<std::string>& args,
const std::vector<int>& fds,
const std::string& channel_id) override;
bool GetTerminationStatus(pid_t pid,
bool known_dead,
base::TerminationStatus* status,
int* exit_code) override;
private:
static void AddPassthroughEnvToOptions(base::LaunchOptions* options);
// These values are reported via UMA and hence they become permanent
// constants. Old values cannot be reused, only new ones added.
enum NaClHelperStatus {
kNaClHelperUnused = 0,
kNaClHelperMissing = 1,
kNaClHelperBootstrapMissing = 2,
// kNaClHelperValgrind = 3, // Running in valgrind no longer supported.
kNaClHelperLaunchFailed = 4,
kNaClHelperAckFailed = 5,
kNaClHelperSuccess = 6,
kNaClHelperStatusBoundary // Must be one greater than highest value used.
};
NaClHelperStatus status_;
int fd_;
FRIEND_TEST_ALL_PREFIXES(NaClForkDelegateLinuxTest, EnvPassthrough);
};
} // namespace nacl
#endif // COMPONENTS_NACL_ZYGOTE_NACL_FORK_DELEGATE_LINUX_H_
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