disk_reader.hpp

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#pragma once
 
#include <cstddef>
#include <cstdint>
#include <string>
#include <vector>
 
class DiskReader {
public:
    DiskReader();
    ~DiskReader();
 
    bool open_readonly(const std::string& path, std::string& error);
    void close();
 
    bool is_open() const;
    bool is_block_device() const;
    uint64_t size() const;
    uint32_t logical_sector_size() const;
    const std::string& path() const;
 
    bool read_at(uint64_t offset, void* buffer, size_t len);
    std::vector<std::byte> read_block(uint64_t offset, size_t len);
 
private:
    int fd_;
    bool is_block_device_;
    uint64_t size_;
    uint32_t logical_sector_size_;
    std::string path_;
};