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https://github.com/RGBCube/serenity
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781d29a337
@bugaevc pointed out that we shouldn't be setting this flag in userspace, and he's right of course.
85 lines
3 KiB
C++
85 lines
3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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int Process::sys$sendfd(int sockfd, int fd)
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{
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REQUIRE_PROMISE(sendfd);
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auto socket_description = file_description(sockfd);
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if (!socket_description)
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return -EBADF;
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if (!socket_description->is_socket())
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return -ENOTSOCK;
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auto& socket = *socket_description->socket();
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if (!socket.is_local())
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return -EAFNOSUPPORT;
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if (!socket.is_connected())
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return -ENOTCONN;
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auto passing_descriptor = file_description(fd);
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if (!passing_descriptor)
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return -EBADF;
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auto& local_socket = static_cast<LocalSocket&>(socket);
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return local_socket.sendfd(*socket_description, *passing_descriptor);
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}
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int Process::sys$recvfd(int sockfd, int options)
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{
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REQUIRE_PROMISE(recvfd);
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auto socket_description = 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 = alloc_fd();
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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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