serenity/Kernel/FileSystem/Mount.cpp
Andreas Kling 19084ef743 Kernel: Simplify Mount internals
- The host custody never changes after initialization, so there's no
  need to protect it with a spinlock.

- To enforce the fact that some members don't change after
  initialization, make them const.
2023-04-04 10:33:42 +02:00

52 lines
1.2 KiB
C++

/*
* Copyright (c) 2018-2023, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/FileSystem.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/FileSystem/Mount.h>
namespace Kernel {
Mount::Mount(NonnullRefPtr<FileSystem> guest_fs, RefPtr<Custody> host_custody, int flags)
: m_guest_fs(move(guest_fs))
, m_guest(m_guest_fs->root_inode())
, m_host_custody(move(host_custody))
, m_flags(flags)
{
}
Mount::Mount(NonnullRefPtr<Inode> source, NonnullRefPtr<Custody> host_custody, int flags)
: m_guest_fs(source->fs())
, m_guest(move(source))
, m_host_custody(move(host_custody))
, m_flags(flags)
{
}
ErrorOr<NonnullOwnPtr<KString>> Mount::absolute_path() const
{
if (!m_host_custody)
return KString::try_create("/"sv);
return m_host_custody->try_serialize_absolute_path();
}
RefPtr<Inode> Mount::host()
{
if (!m_host_custody)
return nullptr;
return m_host_custody->inode();
}
RefPtr<Inode const> Mount::host() const
{
if (!m_host_custody)
return nullptr;
return m_host_custody->inode();
}
}