jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <Kernel/FileSystem/Custody.h>
8#include <Kernel/FileSystem/FileSystem.h>
9#include <Kernel/FileSystem/Inode.h>
10#include <Kernel/FileSystem/Mount.h>
11
12namespace Kernel {
13
14Mount::Mount(FileSystem& guest_fs, Custody* host_custody, int flags)
15 : m_guest(guest_fs.root_inode())
16 , m_guest_fs(guest_fs)
17 , m_host_custody(host_custody)
18 , m_flags(flags)
19{
20}
21
22Mount::Mount(Inode& source, Custody& host_custody, int flags)
23 : m_guest(source)
24 , m_guest_fs(source.fs())
25 , m_host_custody(host_custody)
26 , m_flags(flags)
27{
28}
29
30ErrorOr<NonnullOwnPtr<KString>> Mount::absolute_path() const
31{
32 return m_host_custody.with([&](auto& host_custody) -> ErrorOr<NonnullOwnPtr<KString>> {
33 if (!host_custody)
34 return KString::try_create("/"sv);
35 return host_custody->try_serialize_absolute_path();
36 });
37}
38
39RefPtr<Inode> Mount::host()
40{
41 return m_host_custody.with([](auto& host_custody) -> RefPtr<Inode> {
42 if (!host_custody)
43 return nullptr;
44 return &host_custody->inode();
45 });
46}
47
48RefPtr<Inode const> Mount::host() const
49{
50 return m_host_custody.with([](auto& host_custody) -> RefPtr<Inode const> {
51 if (!host_custody)
52 return nullptr;
53 return &host_custody->inode();
54 });
55}
56
57}