ladybird/Kernel/Syscalls/ioctl.cpp
Andrew Kaster 100fb38c3e Kernel+Userland: Move LibC/sys/ioctl_numbers to Kernel/API/Ioctl.h
This header has always been fundamentally a Kernel API file. Move it
where it belongs. Include it directly in Kernel files, and make
Userland applications include it via sys/ioctl.h rather than directly.
2023-01-21 10:43:59 -07:00

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C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Userspace.h>
#include <Kernel/API/Ioctl.h>
#include <Kernel/FileSystem/OpenFileDescription.h>
#include <Kernel/Process.h>
namespace Kernel {
ErrorOr<FlatPtr> Process::sys$ioctl(int fd, unsigned request, FlatPtr arg)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
auto description = TRY(open_file_description(fd));
if (request == FIONBIO) {
description->set_blocking(TRY(copy_typed_from_user(Userspace<int const*>(arg))) == 0);
return 0;
}
if (request == FIOCLEX) {
m_fds.with_exclusive([&](auto& fds) {
fds[fd].set_flags(fds[fd].flags() | FD_CLOEXEC);
});
return 0;
}
if (request == FIONCLEX) {
m_fds.with_exclusive([&](auto& fds) {
fds[fd].set_flags(fds[fd].flags() & ~FD_CLOEXEC);
});
return 0;
}
TRY(description->file().ioctl(*description, request, arg));
return 0;
}
}