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net/UniqueSocketDescriptor: use AdoptTag in the constructors that adopt ownership

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This makes it a little bit harder to use the ownershop-adopting
constructors accidently.
This commit is contained in:
Max Kellermann 2025-01-23 16:36:54 +01:00 committed by Max Kellermann
parent 131263cbe3
commit 765a6a2f20
3 changed files with 8 additions and 7 deletions

2
src/Listen.cxx

@ -49,7 +49,7 @@ listen_systemd_activation(ClientListener &listener)
for (int i = SD_LISTEN_FDS_START, end = SD_LISTEN_FDS_START + n;
i != end; ++i)
listener.AddFD(UniqueSocketDescriptor(i));
listener.AddFD(UniqueSocketDescriptor{AdoptTag{}, i});
return true;
}

2
src/event/ServerSocket.cxx

@ -130,7 +130,7 @@ inline void
ServerSocket::OneServerSocket::Accept() noexcept
{
StaticSocketAddress peer_address;
UniqueSocketDescriptor peer_fd(event.GetSocket().AcceptNonBlock(peer_address));
UniqueSocketDescriptor peer_fd{AdoptTag{}, event.GetSocket().AcceptNonBlock(peer_address)};
if (!peer_fd.IsDefined()) {
const SocketErrorMessage msg;
FmtError(server_socket_domain,

11
src/net/UniqueSocketDescriptor.hxx

@ -4,6 +4,7 @@
#pragma once
#include "SocketDescriptor.hxx"
#include "util/TagStructs.hxx"
#ifndef _WIN32
#include "io/UniqueFileDescriptor.hxx"
@ -21,17 +22,17 @@ public:
UniqueSocketDescriptor() noexcept
:SocketDescriptor(SocketDescriptor::Undefined()) {}
explicit UniqueSocketDescriptor(SocketDescriptor _fd) noexcept
explicit UniqueSocketDescriptor(AdoptTag, SocketDescriptor _fd) noexcept
:SocketDescriptor(_fd) {}
#ifndef _WIN32
explicit UniqueSocketDescriptor(FileDescriptor _fd) noexcept
explicit UniqueSocketDescriptor(AdoptTag, FileDescriptor _fd) noexcept
:SocketDescriptor(_fd) {}
explicit UniqueSocketDescriptor(UniqueFileDescriptor &&_fd) noexcept
:SocketDescriptor(_fd.Release()) {}
#endif // !_WIN32
explicit UniqueSocketDescriptor(int _fd) noexcept
explicit UniqueSocketDescriptor(AdoptTag, int _fd) noexcept
:SocketDescriptor(_fd) {}
#ifdef _WIN32
@ -75,14 +76,14 @@ public:
* @return an "undefined" instance on error
*/
UniqueSocketDescriptor AcceptNonBlock() const noexcept {
return UniqueSocketDescriptor(SocketDescriptor::AcceptNonBlock());
return UniqueSocketDescriptor{AdoptTag{}, SocketDescriptor::AcceptNonBlock()};
}
/**
* @return an "undefined" instance on error
*/
UniqueSocketDescriptor AcceptNonBlock(StaticSocketAddress &address) const noexcept {
return UniqueSocketDescriptor(SocketDescriptor::AcceptNonBlock(address));
return UniqueSocketDescriptor{AdoptTag{}, SocketDescriptor::AcceptNonBlock(address)};
}
#ifndef _WIN32