const syscall.O_NONBLOCK

4 uses

	syscall (current package)
		exec_unix.go#L112: 		flag |= O_NONBLOCK
		exec_unix.go#L114: 		flag &^= O_NONBLOCK
		zerrors_darwin_arm64.go#L752: 	O_NONBLOCK                        = 0x4

	internal/syscall/unix
		nonblocking_libc.go#L19: 	return flag&syscall.O_NONBLOCK != 0, nil