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// Copyright 2016 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 BASE_MAC_MACH_PORT_UTIL_H_
#define BASE_MAC_MACH_PORT_UTIL_H_
#include <mach/mach.h>
#include "base/base_export.h"
#include "base/mac/scoped_mach_port.h"
namespace base {
enum class MachCreateError {
ERROR_MAKE_RECEIVE_PORT,
ERROR_SET_ATTRIBUTES,
ERROR_EXTRACT_DEST_RIGHT,
ERROR_SEND_MACH_PORT,
};
// Sends a Mach port to |dest_port|. Assumes that |dest_port| is a send once
// right. Takes ownership of |dest_port|.
BASE_EXPORT kern_return_t SendMachPort(mach_port_t dest_port,
mach_port_t port_to_send,
int disposition);
// Receives a Mach port from |port_to_listen_on|, which should have exactly one
// queued message. Returns |MACH_PORT_NULL| on any error.
BASE_EXPORT base::mac::ScopedMachSendRight ReceiveMachPort(
mach_port_t port_to_listen_on);
// Creates an intermediate Mach port in |task_port| and sends |port_to_insert|
// as a mach_msg to the intermediate Mach port.
// |task_port| is the task port of another process.
// |port_to_insert| must be a send right in the current task's name space.
// Returns the intermediate port on success, and MACH_PORT_NULL on failure.
// On failure, |error_code| is set if not null.
// This method takes ownership of |port_to_insert|. On success, ownership is
// passed to the intermediate Mach port.
BASE_EXPORT mach_port_name_t CreateIntermediateMachPort(
mach_port_t task_port,
base::mac::ScopedMachSendRight port_to_insert,
MachCreateError* error_code);
} // namespace base
#endif // BASE_MAC_MACH_PORT_UTIL_H_
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