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52 lines
2.3 KiB
C++
52 lines
2.3 KiB
C++
/*
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* Copyright (c) 2018-2020, 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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#pragma once
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#include <Kernel/FileSystem/ProcFS/ProcessAssociatedInode.h>
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#include <Kernel/Forward.h>
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#include <Kernel/KBufferBuilder.h>
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#include <Kernel/Locking/Mutex.h>
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#include <Kernel/ProcessExposed.h>
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#include <Kernel/UnixTypes.h>
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namespace Kernel {
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class ProcFSProcessPropertyInode final : public ProcFSProcessAssociatedInode {
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friend class ProcFS;
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public:
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static ErrorOr<NonnullLockRefPtr<ProcFSProcessPropertyInode>> try_create_for_file_description_link(ProcFS const&, unsigned, ProcessID);
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static ErrorOr<NonnullLockRefPtr<ProcFSProcessPropertyInode>> try_create_for_thread_stack(ProcFS const&, ThreadID, ProcessID);
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static ErrorOr<NonnullLockRefPtr<ProcFSProcessPropertyInode>> try_create_for_pid_property(ProcFS const&, SegmentedProcFSIndex::MainProcessProperty, ProcessID);
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static ErrorOr<NonnullLockRefPtr<ProcFSProcessPropertyInode>> try_create_for_child_process_link(ProcFS const&, ProcessID, ProcessID);
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private:
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ProcFSProcessPropertyInode(ProcFS const&, SegmentedProcFSIndex::MainProcessProperty, ProcessID);
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ProcFSProcessPropertyInode(ProcFS const&, ThreadID, ProcessID);
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ProcFSProcessPropertyInode(ProcFS const&, unsigned, ProcessID);
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ProcFSProcessPropertyInode(ProcFS const&, ProcessID, ProcessID);
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// ^Inode
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virtual ErrorOr<void> attach(OpenFileDescription& description) override;
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virtual void did_seek(OpenFileDescription&, off_t) override;
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virtual InodeMetadata metadata() const override;
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virtual ErrorOr<void> traverse_as_directory(Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
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virtual ErrorOr<size_t> read_bytes_locked(off_t, size_t, UserOrKernelBuffer& buffer, OpenFileDescription*) const override final;
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virtual ErrorOr<NonnullLockRefPtr<Inode>> lookup(StringView name) override final;
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ErrorOr<void> refresh_data(OpenFileDescription& description);
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ErrorOr<void> try_to_acquire_data(Process& process, KBufferBuilder& builder) const;
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const SegmentedProcFSIndex::ProcessSubDirectory m_parent_sub_directory_type;
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union {
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SegmentedProcFSIndex::MainProcessProperty property_type;
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unsigned property_index;
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} m_possible_data;
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mutable Mutex m_refresh_lock;
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};
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}
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