xv6-riscv-kernel/kernel/stat.h

#pragma once

#include "types.h"

#define T_DIR    1 // Directory
#define T_FILE   2 // File
#define T_DEVICE 3 // Device

struct stat {
  int   dev;   // File system's disk device
  u32   ino;   // Inode number
  short type;  // Type of file
  short nlink; // Number of links to file
  u64   size;  // Size of file in bytes
};