O_NONBLOCK 326 maint/gnulib/lib/fcntl.in.h # define O_NONBLOCK O_NDELAY O_NONBLOCK 337 maint/gnulib/lib/fcntl.in.h # undef O_NONBLOCK O_NONBLOCK 338 maint/gnulib/lib/fcntl.in.h # define O_NONBLOCK 0x40000000