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/*
* 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/Tasks/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;
}
}
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