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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/HashMap.h>
8#include <AK/Singleton.h>
9#include <AK/StringView.h>
10#include <Kernel/FileSystem/FileSystem.h>
11#include <Kernel/FileSystem/Inode.h>
12#include <Kernel/FileSystem/VirtualFileSystem.h>
13#include <Kernel/InterruptDisabler.h>
14#include <Kernel/Memory/MemoryManager.h>
15#include <Kernel/Net/LocalSocket.h>
16
17namespace Kernel {
18
19static u32 s_lastFileSystemID;
20
21FileSystem::FileSystem()
22 : m_fsid(++s_lastFileSystemID)
23{
24}
25
26FileSystem::~FileSystem()
27{
28}
29
30ErrorOr<void> FileSystem::prepare_to_unmount()
31{
32 return m_attach_count.with([&](auto& attach_count) -> ErrorOr<void> {
33 if (attach_count == 1)
34 return prepare_to_clear_last_mount();
35 return {};
36 });
37}
38
39FileSystem::DirectoryEntryView::DirectoryEntryView(StringView n, InodeIdentifier i, u8 ft)
40 : name(n)
41 , inode(i)
42 , file_type(ft)
43{
44}
45
46void FileSystem::sync()
47{
48 Inode::sync_all();
49 VirtualFileSystem::the().sync_filesystems();
50}
51
52void FileSystem::lock_all()
53{
54 VirtualFileSystem::the().lock_all_filesystems();
55}
56
57}