-#ifndef S_ISLNK
-# ifdef S_IFLNK
-# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
-# else
-# define S_ISLNK(m) 0
-# endif
-#endif
-
-#ifndef S_ISMPB /* V7 */
-# ifdef S_IFMPB
-# define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
-# define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
-# else
-# define S_ISMPB(m) 0
-# define S_ISMPC(m) 0
-# endif
-#endif
-
-#ifndef S_ISNAM /* Xenix */
-# ifdef S_IFNAM
-# define S_ISNAM(m) (((m) & S_IFMT) == S_IFNAM)
-# else
-# define S_ISNAM(m) 0
-# endif
-#endif
-
-#ifndef S_ISNWK /* HP/UX */
-# ifdef S_IFNWK
-# define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
-# else
-# define S_ISNWK(m) 0
-# endif
-#endif
-
-#ifndef S_ISREG
-# ifdef S_IFREG
-# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
-# else
-# define S_ISREG(m) 0
-# endif
-#endif
-
-#ifndef S_ISSOCK
-# ifdef S_IFSOCK
-# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
-# else
-# define S_ISSOCK(m) 0
-# endif
-#endif
-
-
-#ifndef S_TYPEISSEM
-# ifdef S_INSEM
-# define S_TYPEISSEM(p) (S_ISNAM ((p)->st_mode) && (p)->st_rdev == S_INSEM)
-# else
-# define S_TYPEISSEM(p) 0
-# endif
-#endif
-
-#ifndef S_TYPEISSHM
-# ifdef S_INSHD
-# define S_TYPEISSHM(p) (S_ISNAM ((p)->st_mode) && (p)->st_rdev == S_INSHD)
-# else
-# define S_TYPEISSHM(p) 0
-# endif
-#endif