FIONBIO           109 maint/gnulib/lib/nonblocking.c           return ioctl (desc, FIONBIO, &v);
FIONBIO           134 maint/gnulib/tests/test-poll.c       ioctl (s, FIONBIO, (char *) &iMode);
FIONBIO           123 maint/gnulib/tests/test-select.h       ioctl (s, FIONBIO, (char *) &iMode);