gecko-dev/security/sandbox/linux/SandboxBrokerClient.h

47 lines
1.5 KiB
C++

/* -*- 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 "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;
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, struct stat* aStat);
int LStat(const char* aPath, struct stat* aStat);
private:
int mFileDesc;
int DoCall(const Request* aReq, const char* aPath, struct stat* aStat,
bool expectFd);
};
} // namespace mozilla
#endif // mozilla_SandboxBrokerClient_h