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serenity/Kernel/FileSystem/Custody.h

53 lines
1.3 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <Kernel/Forward.h>
#include <Kernel/Heap/SlabAllocator.h>
#include <Kernel/KResult.h>
namespace Kernel {
// FIXME: Custody needs some locking.
class Custody : public RefCounted<Custody> {
MAKE_SLAB_ALLOCATED(Custody)
public:
static KResultOr<NonnullRefPtr<Custody>> create(Custody* parent, const StringView& name, Inode& inode, int mount_flags)
{
auto custody = adopt_ref_if_nonnull(new Custody(parent, name, inode, mount_flags));
if (!custody)
return ENOMEM;
return custody.release_nonnull();
}
~Custody();
Custody* parent() { return m_parent.ptr(); }
const Custody* parent() const { return m_parent.ptr(); }
Inode& inode() { return *m_inode; }
const Inode& inode() const { return *m_inode; }
const String& name() const { return m_name; }
String absolute_path() const;
int mount_flags() const { return m_mount_flags; }
bool is_readonly() const;
private:
Custody(Custody* parent, const StringView& name, Inode&, int mount_flags);
RefPtr<Custody> m_parent;
String m_name;
NonnullRefPtr<Inode> m_inode;
int m_mount_flags { 0 };
};
}