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// Copyright (c) 2012 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.
#ifndef CHROME_APP_NACL_FORK_DELEGATE_LINUX_H_
#define CHROME_APP_NACL_FORK_DELEGATE_LINUX_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "content/public/common/zygote_fork_delegate_linux.h"
// 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();
virtual ~NaClForkDelegate();
virtual void Init(bool sandboxed,
int browserdesc,
int sandboxdesc) OVERRIDE;
virtual void InitialUMA(std::string* uma_name,
int* uma_sample,
int* uma_boundary_value) OVERRIDE;
virtual bool CanHelp(const std::string& process_type, std::string* uma_name,
int* uma_sample, int* uma_boundary_value) OVERRIDE;
virtual pid_t Fork(const std::vector<int>& fds) OVERRIDE;
virtual bool AckChild(int fd,
const std::string& channel_switch) OVERRIDE;
private:
// 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,
kNaClHelperLaunchFailed = 4,
kNaClHelperAckFailed = 5,
kNaClHelperSuccess = 6,
kNaClHelperStatusBoundary // Must be one greater than highest value used.
};
NaClHelperStatus status_;
bool sandboxed_;
int fd_;
};
#endif // CHROME_APP_NACL_FORK_DELEGATE_LINUX_H_
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