O_NDELAY           92 lib/unixcompat.h #ifdef O_NDELAY  // SYSV
O_NDELAY           93 lib/unixcompat.h #define O_NONBLOCK O_NDELAY
O_NDELAY           32 lib/vfs/vfs.h  #define O_ALL               (O_CREAT | O_EXCL | O_NOCTTY | O_NDELAY | O_SYNC | O_WRONLY | O_RDWR | O_RDONLY)