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4a9c18afb9
Dr. POSIX really calls these "open file description", not just "file description", so let's call them exactly that. :^)
34 lines
794 B
C++
34 lines
794 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()
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{
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}
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KResultOr<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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}
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