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Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>

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We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.

Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)
This commit is contained in:
Andreas Kling 2021-11-08 00:51:39 +01:00
parent 7ee10c6926
commit 79fa9765ca
262 changed files with 2415 additions and 2600 deletions
Download patch file Download diff file Expand all files Collapse all files

76
Kernel/Net/IPv4Socket.cpp
View file

@ -35,12 +35,12 @@ MutexProtected<IPv4Socket::List>& IPv4Socket::all_sockets()
return *s_all_sockets;
}
KResultOr<NonnullOwnPtr<DoubleBuffer>> IPv4Socket::try_create_receive_buffer()
ErrorOr<NonnullOwnPtr<DoubleBuffer>> IPv4Socket::try_create_receive_buffer()
{
return DoubleBuffer::try_create(256 * KiB);
}
KResultOr<NonnullRefPtr<Socket>> IPv4Socket::create(int type, int protocol)
ErrorOr<NonnullRefPtr<Socket>> IPv4Socket::create(int type, int protocol)
{
auto receive_buffer = TRY(IPv4Socket::try_create_receive_buffer());
@ -94,7 +94,7 @@ void IPv4Socket::get_peer_address(sockaddr* address, socklen_t* address_size)
*address_size = sizeof(sockaddr_in);
}
KResult IPv4Socket::bind(Userspace<const sockaddr*> user_address, socklen_t address_size)
ErrorOr<void> IPv4Socket::bind(Userspace<const sockaddr*> user_address, socklen_t address_size)
{
VERIFY(setup_state() == SetupState::Unstarted);
if (address_size != sizeof(sockaddr_in))
@ -122,12 +122,12 @@ KResult IPv4Socket::bind(Userspace<const sockaddr*> user_address, socklen_t addr
return protocol_bind();
}
KResult IPv4Socket::listen(size_t backlog)
ErrorOr<void> IPv4Socket::listen(size_t backlog)
{
MutexLocker locker(mutex());
auto result = allocate_local_port_if_needed();
if (result.error_or_port.is_error() && result.error_or_port.error() != ENOPROTOOPT)
return result.error_or_port.error();
if (result.error_or_port.is_error() && result.error_or_port.error().code() != ENOPROTOOPT)
return result.error_or_port.release_error();
set_backlog(backlog);
set_role(Role::Listener);
@ -138,7 +138,7 @@ KResult IPv4Socket::listen(size_t backlog)
return protocol_listen(result.did_allocate);
}
KResult IPv4Socket::connect(OpenFileDescription& description, Userspace<const sockaddr*> address, socklen_t address_size, ShouldBlock should_block)
ErrorOr<void> IPv4Socket::connect(OpenFileDescription& description, Userspace<const sockaddr*> address, socklen_t address_size, ShouldBlock should_block)
{
if (address_size != sizeof(sockaddr_in))
return set_so_error(EINVAL);
@ -182,12 +182,12 @@ PortAllocationResult IPv4Socket::allocate_local_port_if_needed()
return { m_local_port, false };
auto port_or_error = protocol_allocate_local_port();
if (port_or_error.is_error())
return { port_or_error.error(), false };
m_local_port = port_or_error.value();
return { port_or_error.release_error(), false };
m_local_port = port_or_error.release_value();
return { m_local_port, true };
}
KResultOr<size_t> IPv4Socket::sendto(OpenFileDescription&, const UserOrKernelBuffer& data, size_t data_length, [[maybe_unused]] int flags, Userspace<const sockaddr*> addr, socklen_t addr_length)
ErrorOr<size_t> IPv4Socket::sendto(OpenFileDescription&, const UserOrKernelBuffer& data, size_t data_length, [[maybe_unused]] int flags, Userspace<const sockaddr*> addr, socklen_t addr_length)
{
MutexLocker locker(mutex());
@ -217,8 +217,8 @@ KResultOr<size_t> IPv4Socket::sendto(OpenFileDescription&, const UserOrKernelBuf
if (m_local_address.to_u32() == 0)
m_local_address = routing_decision.adapter->ipv4_address();
if (auto result = allocate_local_port_if_needed(); result.error_or_port.is_error() && result.error_or_port.error() != ENOPROTOOPT)
return result.error_or_port.error();
if (auto result = allocate_local_port_if_needed(); result.error_or_port.is_error() && result.error_or_port.error().code() != ENOPROTOOPT)
return result.error_or_port.release_error();
dbgln_if(IPV4_SOCKET_DEBUG, "sendto: destination={}:{}", m_peer_address, m_peer_port);
@ -232,7 +232,7 @@ KResultOr<size_t> IPv4Socket::sendto(OpenFileDescription&, const UserOrKernelBuf
m_peer_address, (IPv4Protocol)protocol(), data_length, m_type_of_service, m_ttl);
if (auto result = data.read(packet->buffer->data() + ipv4_payload_offset, data_length); result.is_error()) {
routing_decision.adapter->release_packet_buffer(*packet);
return set_so_error(result);
return set_so_error(result.release_error());
}
routing_decision.adapter->send_packet(packet->bytes());
routing_decision.adapter->release_packet_buffer(*packet);
@ -245,7 +245,7 @@ KResultOr<size_t> IPv4Socket::sendto(OpenFileDescription&, const UserOrKernelBuf
return nsent_or_error;
}
KResultOr<size_t> IPv4Socket::receive_byte_buffered(OpenFileDescription& description, UserOrKernelBuffer& buffer, size_t buffer_length, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>)
ErrorOr<size_t> IPv4Socket::receive_byte_buffered(OpenFileDescription& description, UserOrKernelBuffer& buffer, size_t buffer_length, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>)
{
MutexLocker locker(mutex());
@ -271,7 +271,7 @@ KResultOr<size_t> IPv4Socket::receive_byte_buffered(OpenFileDescription& descrip
}
}
KResultOr<size_t> nreceived_or_error { 0 };
ErrorOr<size_t> nreceived_or_error { 0 };
if (flags & MSG_PEEK)
nreceived_or_error = m_receive_buffer->peek(buffer, buffer_length);
else
@ -284,7 +284,7 @@ KResultOr<size_t> IPv4Socket::receive_byte_buffered(OpenFileDescription& descrip
return nreceived_or_error;
}
KResultOr<size_t> IPv4Socket::receive_packet_buffered(OpenFileDescription& description, UserOrKernelBuffer& buffer, size_t buffer_length, int flags, Userspace<sockaddr*> addr, Userspace<socklen_t*> addr_length, Time& packet_timestamp)
ErrorOr<size_t> IPv4Socket::receive_packet_buffered(OpenFileDescription& description, UserOrKernelBuffer& buffer, size_t buffer_length, int flags, Userspace<sockaddr*> addr, Userspace<socklen_t*> addr_length, Time& packet_timestamp)
{
MutexLocker locker(mutex());
ReceivedPacket taken_packet;
@ -379,7 +379,7 @@ KResultOr<size_t> IPv4Socket::receive_packet_buffered(OpenFileDescription& descr
return protocol_receive(packet->data->bytes(), buffer, buffer_length, flags);
}
KResultOr<size_t> IPv4Socket::recvfrom(OpenFileDescription& description, UserOrKernelBuffer& buffer, size_t buffer_length, int flags, Userspace<sockaddr*> user_addr, Userspace<socklen_t*> user_addr_length, Time& packet_timestamp)
ErrorOr<size_t> IPv4Socket::recvfrom(OpenFileDescription& description, UserOrKernelBuffer& buffer, size_t buffer_length, int flags, Userspace<sockaddr*> user_addr, Userspace<socklen_t*> user_addr_length, Time& packet_timestamp)
{
if (user_addr_length) {
socklen_t addr_length;
@ -390,7 +390,7 @@ KResultOr<size_t> IPv4Socket::recvfrom(OpenFileDescription& description, UserOrK
dbgln_if(IPV4_SOCKET_DEBUG, "recvfrom: type={}, local_port={}", type(), local_port());
KResultOr<size_t> nreceived = 0;
ErrorOr<size_t> nreceived = 0;
if (buffer_mode() == BufferMode::Bytes)
nreceived = receive_byte_buffered(description, buffer, buffer_length, flags, user_addr, user_addr_length);
else
@ -456,7 +456,7 @@ bool IPv4Socket::did_receive(const IPv4Address& source_address, u16 source_port,
return true;
}
KResultOr<NonnullOwnPtr<KString>> IPv4Socket::pseudo_path(const OpenFileDescription&) const
ErrorOr<NonnullOwnPtr<KString>> IPv4Socket::pseudo_path(const OpenFileDescription&) const
{
if (m_role == Role::None)
return KString::try_create("socket"sv);
@ -488,7 +488,7 @@ KResultOr<NonnullOwnPtr<KString>> IPv4Socket::pseudo_path(const OpenFileDescript
return KString::try_create(builder.to_string());
}
KResult IPv4Socket::setsockopt(int level, int option, Userspace<const void*> user_value, socklen_t user_value_size)
ErrorOr<void> IPv4Socket::setsockopt(int level, int option, Userspace<const void*> user_value, socklen_t user_value_size)
{
if (level != IPPROTO_IP)
return Socket::setsockopt(level, option, user_value, user_value_size);
@ -502,7 +502,7 @@ KResult IPv4Socket::setsockopt(int level, int option, Userspace<const void*> use
if (value < 0 || value > 255)
return EINVAL;
m_ttl = value;
return KSuccess;
return {};
}
case IP_TOS: {
if (user_value_size < sizeof(int))
@ -512,7 +512,7 @@ KResult IPv4Socket::setsockopt(int level, int option, Userspace<const void*> use
if (value < 0 || value > 255)
return EINVAL;
m_type_of_service = value;
return KSuccess;
return {};
}
case IP_MULTICAST_LOOP: {
if (user_value_size != 1)
@ -522,7 +522,7 @@ KResult IPv4Socket::setsockopt(int level, int option, Userspace<const void*> use
if (value != 0 && value != 1)
return EINVAL;
m_multicast_loop = value;
return KSuccess;
return {};
}
case IP_ADD_MEMBERSHIP: {
if (user_value_size != sizeof(ip_mreq))
@ -534,7 +534,7 @@ KResult IPv4Socket::setsockopt(int level, int option, Userspace<const void*> use
IPv4Address address { (const u8*)&mreq.imr_multiaddr.s_addr };
if (!m_multicast_memberships.contains_slow(address))
m_multicast_memberships.append(address);
return KSuccess;
return {};
}
case IP_DROP_MEMBERSHIP: {
if (user_value_size != sizeof(ip_mreq))
@ -545,14 +545,14 @@ KResult IPv4Socket::setsockopt(int level, int option, Userspace<const void*> use
return ENOTSUP;
IPv4Address address { (const u8*)&mreq.imr_multiaddr.s_addr };
m_multicast_memberships.remove_first_matching([&address](auto& a) { return a == address; });
return KSuccess;
return {};
}
default:
return ENOPROTOOPT;
}
}
KResult IPv4Socket::getsockopt(OpenFileDescription& description, int level, int option, Userspace<void*> value, Userspace<socklen_t*> value_size)
ErrorOr<void> IPv4Socket::getsockopt(OpenFileDescription& description, int level, int option, Userspace<void*> value, Userspace<socklen_t*> value_size)
{
if (level != IPPROTO_IP)
return Socket::getsockopt(description, level, option, value, value_size);
@ -589,11 +589,11 @@ KResult IPv4Socket::getsockopt(OpenFileDescription& description, int level, int
}
}
KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg)
ErrorOr<void> IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg)
{
REQUIRE_PROMISE(inet);
auto ioctl_route = [request, arg]() -> KResult {
auto ioctl_route = [request, arg]() -> ErrorOr<void> {
auto user_route = static_ptr_cast<rtentry*>(arg);
rtentry route;
TRY(copy_from_user(&route, user_route));
@ -614,17 +614,17 @@ KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void
if ((route.rt_flags & (RTF_UP | RTF_GATEWAY)) != (RTF_UP | RTF_GATEWAY))
return EINVAL; // FIXME: Find the correct value to return
adapter->set_ipv4_gateway(IPv4Address(((sockaddr_in&)route.rt_gateway).sin_addr.s_addr));
return KSuccess;
return {};
case SIOCDELRT:
// FIXME: Support gateway deletion
return KSuccess;
return {};
}
return EINVAL;
};
auto ioctl_arp = [request, arg]() -> KResult {
auto ioctl_arp = [request, arg]() -> ErrorOr<void> {
auto user_req = static_ptr_cast<arpreq*>(arg);
arpreq arp_req;
TRY(copy_from_user(&arp_req, user_req));
@ -636,7 +636,7 @@ KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void
if (arp_req.arp_pa.sa_family != AF_INET)
return EAFNOSUPPORT;
update_arp_table(IPv4Address(((sockaddr_in&)arp_req.arp_pa).sin_addr.s_addr), *(MACAddress*)&arp_req.arp_ha.sa_data[0], UpdateArp::Set);
return KSuccess;
return {};
case SIOCDARP:
if (!Process::current().is_superuser())
@ -644,13 +644,13 @@ KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void
if (arp_req.arp_pa.sa_family != AF_INET)
return EAFNOSUPPORT;
update_arp_table(IPv4Address(((sockaddr_in&)arp_req.arp_pa).sin_addr.s_addr), *(MACAddress*)&arp_req.arp_ha.sa_data[0], UpdateArp::Delete);
return KSuccess;
return {};
}
return EINVAL;
};
auto ioctl_interface = [request, arg]() -> KResult {
auto ioctl_interface = [request, arg]() -> ErrorOr<void> {
auto user_ifr = static_ptr_cast<ifreq*>(arg);
ifreq ifr;
TRY(copy_from_user(&ifr, user_ifr));
@ -670,7 +670,7 @@ KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void
if (ifr.ifr_addr.sa_family != AF_INET)
return EAFNOSUPPORT;
adapter->set_ipv4_address(IPv4Address(((sockaddr_in&)ifr.ifr_addr).sin_addr.s_addr));
return KSuccess;
return {};
case SIOCSIFNETMASK:
if (!Process::current().is_superuser())
@ -678,7 +678,7 @@ KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void
if (ifr.ifr_addr.sa_family != AF_INET)
return EAFNOSUPPORT;
adapter->set_ipv4_netmask(IPv4Address(((sockaddr_in&)ifr.ifr_netmask).sin_addr.s_addr));
return KSuccess;
return {};
case SIOCGIFADDR: {
auto ip4_addr = adapter->ipv4_address().to_u32();
@ -770,10 +770,10 @@ KResult IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspace<void
return EINVAL;
}
KResult IPv4Socket::close()
ErrorOr<void> IPv4Socket::close()
{
[[maybe_unused]] auto rc = shutdown(SHUT_RDWR);
return KSuccess;
return {};
}
void IPv4Socket::shut_down_for_reading()