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https://github.com/RGBCube/serenity
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4bfd6e41b9
This makes for nicer handling of errors compared to checking whether a RefPtr is null. Additionally, this will give way to return different types of errors in the future.
39 lines
1 KiB
C++
39 lines
1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/Inode.h>
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#include <Kernel/Memory/SharedInodeVMObject.h>
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namespace Kernel::Memory {
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RefPtr<SharedInodeVMObject> SharedInodeVMObject::try_create_with_inode(Inode& inode)
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{
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size_t size = inode.size();
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if (auto shared_vmobject = inode.shared_vmobject())
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return shared_vmobject.release_nonnull();
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auto vmobject = adopt_ref_if_nonnull(new (nothrow) SharedInodeVMObject(inode, size));
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if (!vmobject)
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return nullptr;
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vmobject->inode().set_shared_vmobject(*vmobject);
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return vmobject;
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}
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KResultOr<NonnullRefPtr<VMObject>> SharedInodeVMObject::try_clone()
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{
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return adopt_nonnull_ref_or_enomem<VMObject>(new (nothrow) SharedInodeVMObject(*this));
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}
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SharedInodeVMObject::SharedInodeVMObject(Inode& inode, size_t size)
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: InodeVMObject(inode, size)
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{
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}
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SharedInodeVMObject::SharedInodeVMObject(SharedInodeVMObject const& other)
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: InodeVMObject(other)
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{
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}
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}
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