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https://github.com/mudita/MuditaOS.git
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9267e2d871
Add ability to change an image name in the vfs code by decoupling vfs from a so-called board code. Introduce platforms as a hardware and os abstraction layer for product code. Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
// Copyright (c) 2017-2021, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
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#pragma once
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#include <purefs/blkdev/disk.hpp>
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#include <mutex>
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#include <vector>
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namespace purefs::blkdev
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{
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class disk_image final : public disk
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{
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static constexpr auto invalid_fd = -1;
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static constexpr auto syspart_size = 32 * 1024UL * 1024UL;
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public:
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explicit disk_image(std::string_view image_filename, std::size_t sector_size = 512, hwpart_t num_parts = 8);
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virtual ~disk_image()
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{}
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private:
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auto probe(unsigned flags) -> int override;
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auto cleanup() -> int override;
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auto write(const void *buf, sector_t lba, std::size_t count, hwpart_t hwpart) -> int override;
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auto read(void *buf, sector_t lba, std::size_t count, hwpart_t hwpart) -> int override;
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auto sync() -> int override;
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auto status() const -> media_status override;
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auto get_info(info_type what, hwpart_t hwpart) const -> scount_t override;
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auto erase(sector_t lba, std::size_t count, hwpart_t hwpart) -> int override;
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auto pm_control(pm_state target_state) -> int override;
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auto pm_read(pm_state ¤t_state) -> int override;
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auto range_valid(sector_t lba, std::size_t count, hwpart_t hwpart) const -> bool;
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auto open_and_truncate(hwpart_t hwpart) -> int;
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private:
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pm_state pmState{pm_state::active};
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std::vector<int> m_filedes;
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std::vector<std::size_t> m_sectors;
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const std::string m_image_name;
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const std::size_t m_sector_size;
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const std::size_t m_syspart_sectors;
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const hwpart_t m_sysparts;
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mutable std::recursive_mutex m_mtx;
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};
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} // namespace purefs::blkdev
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