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Kernel: Embed a Metadata notes entry in coredumps

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Linus Groh 2020-12-30 15:20:30 +01:00 • committed by Andreas Kling
parent 91332515a6
commit d84b96bddc
2 changed files with 20 additions and 0 deletions
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19
Kernel/CoreDump.cpp
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@ -26,6 +26,7 @@
*/
#include <AK/ByteBuffer.h>
#include <AK/JsonObject.h>
#include <Kernel/CoreDump.h>
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/FileDescription.h>
@ -273,6 +274,23 @@ ByteBuffer CoreDump::create_notes_regions_data() const
return regions_data;
}
ByteBuffer CoreDump::create_notes_metadata_data() const
{
ByteBuffer metadata_data;
ELF::Core::Metadata metadata {};
metadata.header.type = ELF::Core::NotesEntryHeader::Type::Metadata;
metadata_data.append((void*)&metadata, sizeof(metadata));
JsonObject metadata_obj;
for (auto& it : m_process->coredump_metadata())
metadata_obj.set(it.key, it.value);
auto json_data = metadata_obj.to_string();
metadata_data.append(json_data.characters(), json_data.length() + 1);
return metadata_data;
}
ByteBuffer CoreDump::create_notes_segment_data() const
{
ByteBuffer notes_buffer;
@ -280,6 +298,7 @@ ByteBuffer CoreDump::create_notes_segment_data() const
notes_buffer += create_notes_process_data();
notes_buffer += create_notes_threads_data();
notes_buffer += create_notes_regions_data();
notes_buffer += create_notes_metadata_data();
ELF::Core::NotesEntryHeader null_entry {};
null_entry.type = ELF::Core::NotesEntryHeader::Type::Null;

1
Kernel/CoreDump.h
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@ -57,6 +57,7 @@ private:
ByteBuffer create_notes_process_data() const;
ByteBuffer create_notes_threads_data() const;
ByteBuffer create_notes_regions_data() const;
ByteBuffer create_notes_metadata_data() const;
NonnullRefPtr<Process> m_process;
NonnullRefPtr<FileDescription> m_fd;