S_ISNAM           245 lib/sys_stat.in.h #ifndef S_ISNAM /* Xenix */
S_ISNAM           293 lib/sys_stat.in.h #  define S_TYPEISSEM(p) (S_ISNAM ((p)->st_mode) && (p)->st_rdev == S_INSEM)
S_ISNAM           301 lib/sys_stat.in.h #  define S_TYPEISSHM(p) (S_ISNAM ((p)->st_mode) && (p)->st_rdev == S_INSHD)