GptHeader.hpp

#ifndef SIMPLE_GPT_READER_GPT_HEADER_HPP
#define SIMPLE_GPT_READER_GPT_HEADER_HPP

#include <cstdint>
#include <sstream>
#include "Uuid.hpp"

/**
 * Based on https://uefi.org/sites/default/files/resources/UEFI%20Spec%202.8B%20May%202020.pdf
 */
class GptHeader {
public:
    uint64_t signature;
    // Revision consists of 4 digits
    uint8_t revision[4];
    uint32_t headerSize;
    uint32_t headerCrc32;
    uint32_t reserved;
    uint64_t myLba;
    uint64_t alternateLba;
    uint64_t firstUsableLba;
    uint64_t lastUsableLba;
    // 16 bytes
    UUID diskGuid;
    uint64_t partitionEntryLba;
    uint32_t numberOfPartitionEntries;
    uint32_t sizeOfPartitionEntry;
    uint32_t partitionEntryArrayCrc32;

    bool isValid() const;
};

std::ostream& operator<<(std::ostream &os, GptHeader &header);

#endif // SIMPLE_GPT_READER_GPT_HEADER_HPP