Initial commit

include/utils.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+#include <string>
+#include <cstdint>
+#include "simplefs.h"
+
+// 位图操作
+void set_bitmap_bit(std::vector<uint8_t>& bitmap_data, uint32_t bit_index);
+void clear_bitmap_bit(std::vector<uint8_t>& bitmap_data, uint32_t bit_index);
+bool is_bitmap_bit_set(const std::vector<uint8_t>& bitmap_data, uint32_t bit_index);
+
+// 路径解析
+void parse_path(const std::string& path, std::string& dirname, std::string& basename);
+
+// 目录项长度计算
+inline uint16_t calculate_dir_entry_len(uint8_t name_len) {
+    uint16_t len = 8 + name_len;
+    return (len + 3) & ~3U;
+}
+
+// 设备类型检查
+bool is_block_device(int fd);
+
+// 块组备份检查
+bool is_backup_group(uint32_t group_index);
+