#ifndef _SYS_STAT_H #define _SYS_STAT_H typedef unsigned int _dev_t; typedef unsigned short _ino_t; typedef unsigned short _mode_t; typedef long _off_t; #define dev_t _dev_t #define ino_t _ino_t #define mode_t _mode_t #define off_t _off_t int mkdir(const char *path, mode_t mode); int remove(const char *pathname); int rename(const char *oldpath, const char *newpath); #endif