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LibCoreDump+CrashDaemon: Compress coredumps

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Most coredumps contain large amounts of consecutive null bytes and as
such are a prime candidate for compression.

This commit makes CrashDaemon compress files once the kernel finishes
emitting them, as well as adds the functionality needed in LibCoreDump
to then parse them.
This commit is contained in:
Idan Horowitz 2021-03-26 18:46:20 +03:00 • committed by Andreas Kling
commit 9f656b6fa9
Notes: sideshowbarker 2024-07-18 20:59:27 +09:00
8 changed files with 70 additions and 15 deletions
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6
Userland/Libraries/LibCoreDump/Reader.h
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@ -70,7 +70,9 @@ public:
HashMap<String, String> metadata() const;
private:
Reader(NonnullRefPtr<MappedFile>);
Reader(ReadonlyBytes);
static ByteBuffer decompress_coredump(const ReadonlyBytes&);
class NotesEntryIterator {
public:
@ -92,7 +94,7 @@ private:
// as getters with the appropriate (non-JsonValue) types.
const JsonObject process_info() const;
NonnullRefPtr<MappedFile> m_coredump_file;
ByteBuffer m_coredump_buffer;
ELF::Image m_coredump_image;
ssize_t m_notes_segment_index { -1 };
};