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Kernel+LibC: Implement the socketpair() syscall

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This commit is contained in:
Gunnar Beutner 2021-04-28 12:39:12 +02:00 • committed by Andreas Kling
parent c841012f56
commit aa792062cb
11 changed files with 100 additions and 91 deletions
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25
Kernel/Net/LocalSocket.cpp
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@ -36,6 +36,31 @@ KResultOr<NonnullRefPtr<Socket>> LocalSocket::create(int type)
return adopt_ref(*new LocalSocket(type));
}
KResultOr<SocketPair> LocalSocket::create_connected_pair(int type)
{
auto socket = adopt_ref(*new LocalSocket(type));
auto description1_result = FileDescription::create(*socket);
if (description1_result.is_error())
return description1_result.error();
socket->m_address.sun_family = AF_LOCAL;
memcpy(socket->m_address.sun_path, "[socketpair]", 13);
auto& process = *Process::current();
socket->m_acceptor = { process.pid().value(), process.uid(), process.gid() };
socket->set_connected(true);
socket->set_connect_side_role(Role::Connected);
socket->m_role = Role::Accepted;
auto description2_result = FileDescription::create(*socket);
if (description2_result.is_error())
return description2_result.error();
return SocketPair { description1_result.release_value(), description2_result.release_value() };
}
LocalSocket::LocalSocket(int type)
: Socket(AF_LOCAL, type, 0)
{

6
Kernel/Net/LocalSocket.h
View file

@ -14,12 +14,18 @@ namespace Kernel {
class FileDescription;
struct SocketPair {
NonnullRefPtr<FileDescription> description1;
NonnullRefPtr<FileDescription> description2;
};
class LocalSocket final : public Socket
, public InlineLinkedListNode<LocalSocket> {
friend class InlineLinkedListNode<LocalSocket>;
public:
static KResultOr<NonnullRefPtr<Socket>> create(int type);
static KResultOr<SocketPair> create_connected_pair(int type);
virtual ~LocalSocket() override;
KResult sendfd(const FileDescription& socket_description, FileDescription& passing_description);