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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
/*
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* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
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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 <AK/HashMap.h>
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#include <AK/MappedFile.h>
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#include <AK/Noncopyable.h>
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#include <AK/OwnPtr.h>
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#include <LibELF/CoreDump.h>
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#include <LibELF/Image.h>
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namespace CoreDump {
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class Reader {
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AK_MAKE_NONCOPYABLE(Reader);
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AK_MAKE_NONMOVABLE(Reader);
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public:
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static OwnPtr<Reader> create(const String&);
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~Reader();
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template<typename Func>
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void for_each_memory_region_info(Func func) const;
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template<typename Func>
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void for_each_thread_info(Func func) const;
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const ELF::Image& image() const { return m_coredump_image; }
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Optional<uint32_t> peek_memory(FlatPtr address) const;
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const ELF::Core::MemoryRegionInfo* region_containing(FlatPtr address) const;
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struct LibraryData {
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String name;
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FlatPtr base_address { 0 };
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NonnullRefPtr<MappedFile> file;
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ELF::Image lib_elf;
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};
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const LibraryData* library_containing(FlatPtr address) const;
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int process_pid() const;
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u8 process_termination_signal() const;
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String process_executable_path() const;
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Vector<String> process_arguments() const;
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Vector<String> process_environment() const;
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HashMap<String, String> metadata() const;
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private:
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Reader(ReadonlyBytes);
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static ByteBuffer decompress_coredump(const ReadonlyBytes&);
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class NotesEntryIterator {
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public:
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NotesEntryIterator(const u8* notes_data);
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ELF::Core::NotesEntryHeader::Type type() const;
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const ELF::Core::NotesEntry* current() const;
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void next();
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bool at_end() const;
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private:
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const ELF::Core::NotesEntry* m_current { nullptr };
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const u8* start { nullptr };
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};
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// Private as we don't need anyone poking around in this JsonObject
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// manually - we know very well what should be included and expose that
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// as getters with the appropriate (non-JsonValue) types.
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const JsonObject process_info() const;
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ByteBuffer m_coredump_buffer;
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ELF::Image m_coredump_image;
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ssize_t m_notes_segment_index { -1 };
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};
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template<typename Func>
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void Reader::for_each_memory_region_info(Func func) const
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{
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for (NotesEntryIterator it((const u8*)m_coredump_image.program_header(m_notes_segment_index).raw_data()); !it.at_end(); it.next()) {
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if (it.type() != ELF::Core::NotesEntryHeader::Type::MemoryRegionInfo)
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continue;
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auto& memory_region_info = reinterpret_cast<const ELF::Core::MemoryRegionInfo&>(*it.current());
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IterationDecision decision = func(memory_region_info);
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if (decision == IterationDecision::Break)
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return;
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}
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}
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template<typename Func>
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void Reader::for_each_thread_info(Func func) const
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{
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for (NotesEntryIterator it((const u8*)m_coredump_image.program_header(m_notes_segment_index).raw_data()); !it.at_end(); it.next()) {
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if (it.type() != ELF::Core::NotesEntryHeader::Type::ThreadInfo)
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continue;
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auto& thread_info = reinterpret_cast<const ELF::Core::ThreadInfo&>(*it.current());
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IterationDecision decision = func(thread_info);
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if (decision == IterationDecision::Break)
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return;
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}
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}
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}
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