t.Run(mode, func(t *testing.T) {
			args := []string{"run", "./testdata/nonblock.go", mode}

			fifos := make([]*fifo, 8)
			for i := range fifos {
				path := filepath.Join(t.TempDir(), fmt.Sprintf("wasip1-nonblock-fifo-%d-%d", rand.Uint32(), i))
				if err := syscall.Mkfifo(path, 0666); err != nil {
					t.Fatal(err)
				}

				file, err := os.OpenFile(path, os.O_RDWR, 0)
				if err != nil {
					t.Fatal(err)

func TestFIFONonBlockingEOF(t *testing.T) {
	fifoName := filepath.Join(t.TempDir(), "issue-66239-fifo")
	if err := syscall.Mkfifo(fifoName, 0600); err != nil {
		t.Fatalf("Error creating fifo: %v", err)
	}

	r, err := os.OpenFile(fifoName, os.O_RDONLY|syscall.O_NONBLOCK, os.ModeNamedPipe)
	if err != nil {
		t.Fatalf("Error opening fifo for read: %v", err)
	}
	defer r.Close()

        clearCanonCaches();
        return this;
    }

    public TestFile createNamedPipe() {
        try {
            Process mkfifo = new ProcessBuilder("mkfifo", getAbsolutePath())
                .redirectErrorStream(true)
                .start();
            assert mkfifo.waitFor() == 0; // assert the exit value signals success
            return this;
        } catch (IOException | InterruptedException e) {

//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)
//sys	Lstat(path string, stat *Stat_t) (err error)
//sys	Mkdir(path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)
//sys	Mknod(path string, mode uint32, dev int) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys	Open(path string, mode int, perm uint32) (fd int, err error)

//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)
//sys	Lstat(path string, stat *Stat_t) (err error)
//sys	Mkdir(path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)
//sys	Mknod(path string, mode uint32, dev int) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys	Open(path string, mode int, perm uint32) (fd int, err error)

//sys	Lchown(path string, uid int, gid int) (err error)
//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)
//sys	Mkdir(path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)
//sys	mknodat(fd int, path string, mode uint32, dev uint64) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)

//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)
//sys	Lstat(path string, stat *Stat_t) (err error)
//sys	Mkdir(path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)
//sys	Mknod(path string, mode uint32, dev int) (err error)
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys	Open(path string, mode int, perm uint32) (fd int, err error)

//sys	Lstat(path string, stat *Stat_t) (err error)
//sys	Mkdir(path string, mode uint32) (err error)
//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)
//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
//sys	Mknod(path string, mode uint32, dev int) (err error)
//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)

//sys	Lchown(path string, uid int, gid int) (err error)
//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)
//sys	Mkdir(path string, mode uint32) (err error)
//sys	Mkfifo(path string, mode uint32) (err error)
//sys	Mknod(path string, mode uint32, dev int) (err error)
//sys	Mlock(b []byte) (err error)
//sys	Mlockall(flags int) (err error)
//sys	Mprotect(b []byte, prot int) (err error)

			"test/directory",
			"",
			[]string{"test", "directory"},
			false,
		},
		{
			"with-fifo-in-middle",
			func(base string) error {
				testFifo := filepath.Join(base, "mount_test.fifo")
				return syscall.Mkfifo(testFifo, 0)
			},
			"mount_test.fifo/directory",
			"",
			nil,
			true,
		},
	}

	for _, test := range tests {