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https://github.com/RGBCube/serenity
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7c87891c06
Instead of copying a Vector everytime we need to enumerate a Process' file descriptions, we can just temporarily lock so it won't change.
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/FileDescription.h>
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#include <Kernel/Net/LocalSocket.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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KResultOr<FlatPtr> Process::sys$sendfd(int sockfd, int fd)
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{
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REQUIRE_PROMISE(sendfd);
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auto socket_description = fds().file_description(sockfd);
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if (!socket_description)
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return EBADF;
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if (!socket_description->is_socket())
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return ENOTSOCK;
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auto& socket = *socket_description->socket();
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if (!socket.is_local())
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return EAFNOSUPPORT;
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if (!socket.is_connected())
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return ENOTCONN;
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auto passing_descriptor = fds().file_description(fd);
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if (!passing_descriptor)
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return EBADF;
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auto& local_socket = static_cast<LocalSocket&>(socket);
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return local_socket.sendfd(*socket_description, *passing_descriptor);
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}
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KResultOr<FlatPtr> Process::sys$recvfd(int sockfd, int options)
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{
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REQUIRE_PROMISE(recvfd);
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auto socket_description = fds().file_description(sockfd);
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if (!socket_description)
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return EBADF;
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if (!socket_description->is_socket())
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return ENOTSOCK;
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auto& socket = *socket_description->socket();
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if (!socket.is_local())
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return EAFNOSUPPORT;
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int new_fd = m_fds.allocate();
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if (new_fd < 0)
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return new_fd;
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auto& local_socket = static_cast<LocalSocket&>(socket);
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auto received_descriptor_or_error = local_socket.recvfd(*socket_description);
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if (received_descriptor_or_error.is_error())
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return received_descriptor_or_error.error();
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u32 fd_flags = 0;
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if (options & O_CLOEXEC)
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fd_flags |= FD_CLOEXEC;
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m_fds[new_fd].set(*received_descriptor_or_error.value(), fd_flags);
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return new_fd;
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}
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}
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