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| author | Aleksei Vetrov <vvvvvv@google.com> | 2023-01-05 15:41:32 +0000 |
|---|---|---|
| committer | Matthias Maennich <maennich@google.com> | 2023-01-06 16:33:12 +0000 |
| commit | 70423a0647994126fbdda3d2653226c65300f955 (patch) | |
| tree | 0faa9f27f38468734f5235d4c294fbb61442c3b6 /elf_loader.h | |
| parent | fa329871a6ee53d217f7396251dce54ac7b48ea4 (diff) | |
| download | stg-70423a0647994126fbdda3d2653226c65300f955.tar.gz | |
ELF loader: add support for CRC values by offset
New kernels changed the format of storing CRC values from absolute
symbol values to offsets in the `__kcrctab` or `__kcrctab_gpl` section.
Add a new method `GetElfSymbolCRC` to the ELF loader, which reads CRC
values in CRC sections by offset. It is very fast and doesn't affect the
performance of reading the ELF symbol table.
PiperOrigin-RevId: 499873253
Change-Id: Idf419369d26f51167feea4fa7c624a2d28f1239f
Diffstat (limited to 'elf_loader.h')
| -rw-r--r-- | elf_loader.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/elf_loader.h b/elf_loader.h index d0abce5..225c22b 100644 --- a/elf_loader.h +++ b/elf_loader.h @@ -63,6 +63,7 @@ struct SymbolTableEntry { SymbolType symbol_type; Binding binding; Visibility visibility; + size_t section_index; ValueType value_type; }; @@ -78,6 +79,7 @@ class ElfLoader final { std::string_view GetBtfRawData() const; std::vector<SymbolTableEntry> GetElfSymbols() const; + ElfSymbol::CRC GetElfSymbolCRC(const SymbolTableEntry& symbol) const; bool IsLinuxKernelBinary() const; private: |