jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <AK/StringView.h>
8#include <AK/Userspace.h>
9#include <Kernel/FileSystem/File.h>
10#include <Kernel/FileSystem/OpenFileDescription.h>
11#include <Kernel/Process.h>
12
13namespace Kernel {
14
15File::File() = default;
16File::~File() = default;
17
18ErrorOr<NonnullRefPtr<OpenFileDescription>> File::open(int options)
19{
20 auto description = OpenFileDescription::try_create(*this);
21 if (!description.is_error()) {
22 description.value()->set_rw_mode(options);
23 description.value()->set_file_flags(options);
24 }
25 return description;
26}
27
28ErrorOr<void> File::close()
29{
30 return {};
31}
32
33ErrorOr<void> File::ioctl(OpenFileDescription&, unsigned, Userspace<void*>)
34{
35 return ENOTTY;
36}
37
38ErrorOr<NonnullLockRefPtr<Memory::VMObject>> File::vmobject_for_mmap(Process&, Memory::VirtualRange const&, u64&, bool)
39{
40 return ENODEV;
41}
42
43ErrorOr<void> File::attach(OpenFileDescription&)
44{
45 m_attach_count++;
46 return {};
47}
48
49void File::detach(OpenFileDescription&)
50{
51 m_attach_count--;
52}
53}