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https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
36 lines
951 B
C++
36 lines
951 B
C++
/*
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* Copyright (c) 2021, 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/AnonymousFile.h>
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#include <Kernel/Memory/AnonymousVMObject.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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AnonymousFile::AnonymousFile(NonnullRefPtr<Memory::AnonymousVMObject> vmobject)
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: m_vmobject(move(vmobject))
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{
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}
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AnonymousFile::~AnonymousFile() = default;
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ErrorOr<Memory::Region*> AnonymousFile::mmap(Process& process, OpenFileDescription&, Memory::VirtualRange const& range, u64 offset, int prot, bool shared)
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{
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if (offset != 0)
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return EINVAL;
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if (range.size() != m_vmobject->size())
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return EINVAL;
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return process.address_space().allocate_region_with_vmobject(range, m_vmobject, offset, {}, prot, shared);
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}
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ErrorOr<NonnullOwnPtr<KString>> AnonymousFile::pseudo_path(const OpenFileDescription&) const
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{
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return KString::try_create(":anonymous-file:"sv);
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}
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}
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