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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/Net/LocalSocket.h>
#include <Kernel/Process.h>
namespace Kernel {
KResultOr<FlatPtr> Process::sys$sendfd(int sockfd, int fd)
{
REQUIRE_PROMISE(sendfd);
auto socket_description = fds().file_description(sockfd);
if (!socket_description)
return EBADF;
if (!socket_description->is_socket())
return ENOTSOCK;
auto& socket = *socket_description->socket();
if (!socket.is_local())
return EAFNOSUPPORT;
if (!socket.is_connected())
return ENOTCONN;
auto passing_descriptor = fds().file_description(fd);
if (!passing_descriptor)
return EBADF;
auto& local_socket = static_cast<LocalSocket&>(socket);
return local_socket.sendfd(*socket_description, *passing_descriptor);
}
KResultOr<FlatPtr> Process::sys$recvfd(int sockfd, int options)
{
REQUIRE_PROMISE(recvfd);
auto socket_description = fds().file_description(sockfd);
if (!socket_description)
return EBADF;
if (!socket_description->is_socket())
return ENOTSOCK;
auto& socket = *socket_description->socket();
if (!socket.is_local())
return EAFNOSUPPORT;
int new_fd = m_fds.allocate();
if (new_fd < 0)
return new_fd;
auto& local_socket = static_cast<LocalSocket&>(socket);
auto received_descriptor_or_error = local_socket.recvfd(*socket_description);
if (received_descriptor_or_error.is_error())
return received_descriptor_or_error.error();
u32 fd_flags = 0;
if (options & O_CLOEXEC)
fd_flags |= FD_CLOEXEC;
m_fds[new_fd].set(*received_descriptor_or_error.value(), fd_flags);
return new_fd;
}
}
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