3bea3908b2
Add IPC::TransportHandle as an abstraction for passing IPC transports through .ipc messages. This replaces IPC::File at all sites where a transport (not a generic file) is being transferred between processes. TransportHandle provides from_transport(), clone_from_transport(), and create_transport() methods that encapsulate the fd-to-socket-to-transport conversion in one place. This is preparatory work for Mach port support on macOS -- when that lands, only TransportHandle's internals need to change while all .ipc definitions and call sites remain untouched.
63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
/*
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* Copyright (c) 2026, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/Socket.h>
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#include <LibIPC/Decoder.h>
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#include <LibIPC/Encoder.h>
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#include <LibIPC/File.h>
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#include <LibIPC/Transport.h>
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#include <LibIPC/TransportHandle.h>
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namespace IPC {
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TransportHandle::TransportHandle(File file)
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: m_file(move(file))
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{
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}
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ErrorOr<TransportHandle> TransportHandle::from_transport(Transport& transport)
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{
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auto fd = TRY(transport.release_underlying_transport_for_transfer());
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return TransportHandle { File::adopt_fd(fd) };
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}
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ErrorOr<TransportHandle> TransportHandle::clone_from_transport(Transport& transport)
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{
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auto file = TRY(transport.clone_for_transfer());
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return TransportHandle { move(file) };
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}
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ErrorOr<NonnullOwnPtr<Transport>> TransportHandle::create_transport() const
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{
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auto socket = TRY(Core::LocalSocket::adopt_fd(m_file.take_fd()));
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TRY(socket->set_blocking(true));
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return make<Transport>(move(socket));
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}
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int TransportHandle::fd() const
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{
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return m_file.fd();
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}
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ErrorOr<void> TransportHandle::clear_close_on_exec()
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{
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return m_file.clear_close_on_exec();
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}
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template<>
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ErrorOr<void> encode(Encoder& encoder, TransportHandle const& handle)
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{
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return encoder.encode(handle.m_file);
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}
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template<>
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ErrorOr<TransportHandle> decode(Decoder& decoder)
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{
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auto file = TRY(decoder.decode<File>());
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return TransportHandle { move(file) };
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}
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}
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