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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Bitmap.h>
#include <Kernel/UnixTypes.h>
#include <Kernel/VM/VMObject.h>
namespace Kernel {
class InodeVMObject : public VMObject {
public:
virtual ~InodeVMObject() override;
Inode& inode() { return *m_inode; }
const Inode& inode() const { return *m_inode; }
void inode_contents_changed(Badge<Inode>, off_t, ssize_t, const UserOrKernelBuffer&);
void inode_size_changed(Badge<Inode>, size_t old_size, size_t new_size);
size_t amount_dirty() const;
size_t amount_clean() const;
int release_all_clean_pages();
u32 writable_mappings() const;
u32 executable_mappings() const;
protected:
explicit InodeVMObject(Inode&, size_t);
explicit InodeVMObject(const InodeVMObject&);
InodeVMObject& operator=(const InodeVMObject&) = delete;
InodeVMObject& operator=(InodeVMObject&&) = delete;
InodeVMObject(InodeVMObject&&) = delete;
virtual bool is_inode() const final { return true; }
int release_all_clean_pages_impl();
NonnullRefPtr<Inode> m_inode;
Bitmap m_dirty_pages;
};
}
AK_BEGIN_TYPE_TRAITS(Kernel::InodeVMObject)
static bool is_type(const Kernel::VMObject& vmobject) { return vmobject.is_inode(); }
AK_END_TYPE_TRAITS()
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