// Write new environment variables.
	if envv != nil {
		for i = 0; i < len(envv); i++ {
			r1, _, _ = RawSyscall(SYS_CREATE, uintptr(unsafe.Pointer(envv[i].name)), uintptr(O_WRONLY), uintptr(0666))

			if int32(r1) == -1 {
				goto childerror
			}

			envfd = int(r1)

     */

    public static final int PIPE_TYPE_RDONLY = O_RDONLY;

    /**
     * The pipe should be opened only for writing.
     */

    public static final int PIPE_TYPE_WRONLY = O_WRONLY;

    /**
     * The pipe should be opened for both reading and writing.
     */

    public static final int PIPE_TYPE_RDWR   = O_RDWR;

    /**

	if err := f.Close(); err != nil {
		log.Fatal(err)
	}
}

func ExampleOpenFile_append() {
	// If the file doesn't exist, create it, or append to the file
	f, err := os.OpenFile("access.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
	if err != nil {
		log.Fatal(err)
	}
	if _, err := f.Write([]byte("appended some data\n")); err != nil {
		f.Close() // ignore error; Write error takes precedence
		log.Fatal(err)
	}

			return nil, fmt.Errorf("Failed to create log file: %w", err)
		}
	}

	go w.listen()

	return w, nil
}

func newFile(path string) (*os.File, error) {
	return os.OpenFile(path, os.O_WRONLY|os.O_TRUNC|os.O_CREATE|os.O_SYNC, 0o666)

		r, err := fsys.Open(path)
		if err != nil {
			return err
		}
		defer r.Close()
		info, err := r.Stat()
		if err != nil {
			return err
		}
		w, err := OpenFile(newPath, O_CREATE|O_TRUNC|O_WRONLY, 0666|info.Mode()&0777)
		if err != nil {
			return err
		}

		if _, err := io.Copy(w, r); err != nil {
			w.Close()
			return &PathError{Op: "Copy", Path: newPath, Err: err}
		}
		return w.Close()

     * represents is a communications device.
     */
    static final int TYPE_COMM = 0x40;

    /* open flags */

    static final int O_RDONLY = 0x01;
    static final int O_WRONLY = 0x02;
    static final int O_RDWR = 0x03;
    static final int O_APPEND = 0x04;

    // Open Function Encoding
    // create if the file does not exist
    static final int O_CREAT = 0x0010;

func installExe(t *testing.T, dstPath string) {
	src, err := os.Open(exePath(t))
	if err != nil {
		t.Fatal(err)
	}
	defer src.Close()

	dst, err := os.OpenFile(dstPath, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0o777)
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		if err := dst.Close(); err != nil {
			t.Fatal(err)
		}
	}()

	_, err = io.Copy(dst, src)
	if err != nil {
		t.Fatal(err)
	}

// If the file already exists, exclusiveWrite returns (false, nil).
func exclusiveWrite(filename string, content []byte) (_ bool, rerr error) {
	f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0644)
	if err != nil {
		if os.IsExist(err) {
			return false, nil
		}
		return false, err
	}
	defer func() {
		if err := f.Close(); err != nil && rerr == nil {
			rerr = err

}

func (ar *Archive) extractContents1(e *archive.Entry, out io.Writer) {
	if ar.match(e) {
		if verbose {
			listEntry(e, false)
		}
		if out == nil {
			f, err := os.OpenFile(e.Name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0444 /*e.Mode*/)
			if err != nil {
				log.Fatal(err)
			}
			defer f.Close()
			out = f
		}
		ar.output(e, out)
	}
}

	}
	return res
}

func TestMetaDataWriterReader(t *testing.T) {
	d := t.TempDir()

	// Emit a meta-file...
	mfpath := filepath.Join(d, "covmeta.hash.0")
	of, err := os.OpenFile(mfpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
	if err != nil {
		t.Fatalf("opening covmeta: %v", err)
	}
	//t.Logf("meta-file path is %s", mfpath)
	blobs := createMetaDataBlobs(t, 7)
	gran := coverage.CtrGranularityPerBlock