i_filesystem.h

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#pragma once
 
#include <span>
#include <string>
#include <vector>
 
#include "contur/core/error.h"
 
#include "contur/fs/directory_entry.h"
#include "contur/fs/file_descriptor.h"
 
namespace contur {

    struct InodeInfo
    {
        InodeId id = INVALID_INODE_ID;

        InodeType type = InodeType::File;

        std::size_t size = 0;

        std::size_t blockCount = 0;

        Tick createdAt = 0;

        Tick modifiedAt = 0;
    };

    class IFileSystem
    {
        public:
        virtual ~IFileSystem() = default;

        [[nodiscard]] virtual Result<FileDescriptor> open(const std::string &path, OpenMode mode) = 0;

        [[nodiscard]] virtual Result<std::size_t> read(FileDescriptor fd, std::span<std::byte> buffer) = 0;

        [[nodiscard]] virtual Result<std::size_t> write(FileDescriptor fd, std::span<const std::byte> data) = 0;

        [[nodiscard]] virtual Result<void> close(FileDescriptor fd) = 0;

        [[nodiscard]] virtual Result<void> mkdir(const std::string &path) = 0;

        [[nodiscard]] virtual Result<void> remove(const std::string &path) = 0;

        [[nodiscard]] virtual Result<std::vector<DirectoryEntry>> listDir(const std::string &path) const = 0;

        [[nodiscard]] virtual Result<InodeInfo> stat(const std::string &path) const = 0;
    };
 
} // namespace contur