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  • StellarOS
  • OSKernel2026-StellarOS
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  • !6

实现完整的 FAT32 文件系统支持。新建 `drivers/block.rs` 实现 VirtIO-Blk 块设备驱动(MMIO 地址 …

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Merged StellarOS requested to merge fs into main Mar 16, 2026
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Created by: hjg0603

…0x10008000),支持块读写和容量查询。新建 fs/fat32/ 模块,包含 BPB(BIOS Parameter Block)解析、FAT 表管理(簇链遍历、分配、释放)、目录项解析(短文件名、属性判断)、文件系统核心逻辑(根目录、路径查找、簇到扇区转换)。实现 Fat32File 作为 VfsNode,支持顺序读取、lseek 定位(SEEK_SET/CUR/END)、stat 信息。新增 3 个文件系统 syscall:openat(nr=56,支持路径打开)、lseek(nr=62,文件定位)、getdents64(nr=61,目录遍历占位)。在 main.rs 启动流程中初始化块设备和 FAT32 文件系统。syscall 总数达 57 个。

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Source branch: fs