SandboxBrokerClient.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_SandboxBrokerClient_h

#define mozilla_SandboxBrokerClient_h

#include "broker/SandboxBrokerCommon.h"

#include "broker/SandboxBrokerUtils.h"

#include "mozilla/Attributes.h"

// This is the client for the sandbox broker described in

// broker/SandboxBroker.h; its constructor takes the file descriptor

// returned by SandboxBroker::Create, passed to the child over IPC.

//

// The operations exposed here can be called from any thread and in

// async signal handlers, like the corresponding system calls.  The

// intended use is from a seccomp-bpf SIGSYS handler, to transparently

// replace those syscalls, but they could also be used directly.

struct stat;

struct sockaddr_un;

namespace mozilla {

class SandboxBrokerClient final : private SandboxBrokerCommon {

 public:

  explicit SandboxBrokerClient(int aFd);

  ~SandboxBrokerClient();

  int Open(const char* aPath, int aFlags);

  int Access(const char* aPath, int aMode);

  int Stat(const char* aPath, statstruct* aStat);

  int LStat(const char* aPath, statstruct* aStat);

  int Chmod(const char* aPath, int aMode);

  int Link(const char* aPath, const char* aPath2);

  int Mkdir(const char* aPath, int aMode);

  int Symlink(const char* aOldPath, const char* aNewPath);

  int Rename(const char* aOldPath, const char* aNewPath);

  int Unlink(const char* aPath);

  int Rmdir(const char* aPath);

  int Readlink(const char* aPath, void* aBuf, size_t aBufSize);

  int Connect(const struct sockaddr_un* aAddr, size_t aLen, int aType);

 private:

  int mFileDesc;

  int DoCall(const Request* aReq, const char* aPath, const char* aPath2,

             void* aReponseBuff, bool expectFd);

};

}  // namespace mozilla

#endif  // mozilla_SandboxBrokerClient_h