int sys_utime(char *fname,struct utimbuf *times);
int sys_rename(char *from, char *to);
int sys_chmod(char *fname,int mode);
int sys_utime(char *fname,struct utimbuf *times);
int sys_rename(char *from, char *to);
int sys_chmod(char *fname,int mode);
int sys_chown(char *fname,int uid,int gid);
int sys_chroot(char *dname);
struct hostent *sys_gethostbyname(char *name);
int sys_chown(char *fname,int uid,int gid);
int sys_chroot(char *dname);
struct hostent *sys_gethostbyname(char *name);