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Kernel: Stop allowing implicit conversion from KResult to int

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This patch removes KResult::operator int() and deals with the fallout.
This forces a lot of code to be more explicit in its handling of errors,
greatly improving readability.
This commit is contained in:
Andreas Kling
2021-08-14 15:15:11 +02:00
parent d30d776ca4
commit 7676edfb9b
14 changed files with 51 additions and 52 deletions
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25
Kernel/Net/NetworkTask.cpp
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@@ -423,7 +423,6 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
socket->receive_tcp_packet(tcp_packet, ipv4_packet.payload_size());
[[maybe_unused]] int unused_rc {};
switch (socket->state()) {
case TCPSocket::State::Closed:
dbgln("handle_tcp: unexpected flags in Closed state");
@@ -431,7 +430,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
case TCPSocket::State::TimeWait:
dbgln("handle_tcp: unexpected flags in TimeWait state");
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
case TCPSocket::State::Listen:
@@ -462,12 +461,12 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
switch (tcp_packet.flags()) {
case TCPFlags::SYN:
socket->set_ack_number(tcp_packet.sequence_number() + payload_size + 1);
unused_rc = socket->send_ack(true);
(void)socket->send_ack(true);
socket->set_state(TCPSocket::State::SynReceived);
return;
case TCPFlags::ACK | TCPFlags::SYN:
socket->set_ack_number(tcp_packet.sequence_number() + payload_size + 1);
unused_rc = socket->send_ack(true);
(void)socket->send_ack(true);
socket->set_state(TCPSocket::State::Established);
socket->set_setup_state(Socket::SetupState::Completed);
socket->set_connected(true);
@@ -486,7 +485,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: unexpected flags in SynSent state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
socket->set_error(TCPSocket::Error::UnexpectedFlagsDuringConnect);
socket->set_setup_state(Socket::SetupState::Completed);
@@ -501,7 +500,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
case TCPSocket::Direction::Incoming:
if (!socket->has_originator()) {
dbgln("handle_tcp: connection doesn't have an originating socket; maybe it went away?");
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -517,7 +516,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: got ACK in SynReceived state but direction is invalid ({})", TCPSocket::to_string(socket->direction()));
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -528,7 +527,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: unexpected flags in SynReceived state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -536,7 +535,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
switch (tcp_packet.flags()) {
default:
dbgln("handle_tcp: unexpected flags in CloseWait state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -548,7 +547,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: unexpected flags in LastAck state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -564,7 +563,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: unexpected flags in FinWait1 state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -579,7 +578,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: unexpected flags in FinWait2 state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}
@@ -591,7 +590,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, Time const& packet_timestamp)
return;
default:
dbgln("handle_tcp: unexpected flags in Closing state ({:x})", tcp_packet.flags());
unused_rc = socket->send_tcp_packet(TCPFlags::RST);
(void)socket->send_tcp_packet(TCPFlags::RST);
socket->set_state(TCPSocket::State::Closed);
return;
}