return RenameSys(src, dst)
}

// OpenFile captures time taken to call os.OpenFile
func OpenFile(name string, flag int, perm os.FileMode) (f *os.File, err error) {
	switch flag & writeMode {
	case writeMode:
		defer updateOSMetrics(osMetricOpenFileW, name)(err)
	default:
		defer updateOSMetrics(osMetricOpenFileR, name)(err)
	}
	return os.OpenFile(name, flag, perm)
}

		if err := syscall.Mkfifo(name, 0o600); err != nil {
			t.Fatal(err)
		}
		// The problem only occurs if we use O_NONBLOCK here.
		rd, err := os.OpenFile(name, os.O_RDONLY|syscall.O_NONBLOCK, 0o600)
		if err != nil {
			t.Fatal(err)
		}
		wr, err := os.OpenFile(name, os.O_WRONLY|syscall.O_NONBLOCK, 0o600)
		if err != nil {
			t.Fatal(err)
		}
		const msg = "message"

	"testing"
)

func TestLookPathUnixEmptyPath(t *testing.T) {
	// Not parallel: uses Chdir and Setenv.

	tmp := t.TempDir()
	chdir(t, tmp)

	f, err := os.OpenFile("exec_me", os.O_CREATE|os.O_EXCL, 0700)
	if err != nil {
		t.Fatal("OpenFile failed: ", err)
	}
	err = f.Close()
	if err != nil {
		t.Fatal("Close failed: ", err)
	}

	t.Setenv("PATH", "")

	path, err := exec.LookPath("exec_me")

	}
	ofile, ok := file.(*openFile)
	if !ok {
		return nil, &fs.PathError{Op: "read", Path: name, Err: errors.New("is a directory")}
	}
	return []byte(ofile.f.data), nil
}

// An openFile is a regular file open for reading.
type openFile struct {
	f      *file // the file itself
	offset int64 // current read offset
}

var (
	_ io.Seeker   = (*openFile)(nil)
	_ io.ReaderAt = (*openFile)(nil)

	certPath := filepath.Join(tmpdir, constants.APIServerCertName)
	certFile, err := os.OpenFile(certPath, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
	if err != nil {
		t.Fatalf("Failed to create cert file %s: %v", certPath, err)
	}
	certFile.Close()

	keyPath := filepath.Join(tmpdir, constants.APIServerKeyName)
	keyFile, err := os.OpenFile(keyPath, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
	if err != nil {

// see this ZFS-on-Linux commit message:
// https://github.com/openzfs/zfs/commit/a584ef26053065f486d46a7335bea222cb03eeea

// OpenFileDirectIO wrapper around os.OpenFile nothing special
func OpenFileDirectIO(filePath string, flag int, perm os.FileMode) (*os.File, error) {
	return os.OpenFile(filePath, flag, perm)
}

// DisableDirectIO is a no-op
func DisableDirectIO(f *os.File) error {
	return nil
}

	n, err := listen.Read(buf[:])
	if err != nil {
		listen.Close()
		return nil, err
	}
	name := string(buf[:n])
	ctl, err := os.OpenFile(netdir+"/"+fd.net+"/"+name+"/ctl", os.O_RDWR, 0)
	if err != nil {
		listen.Close()
		return nil, err
	}
	data, err := os.OpenFile(netdir+"/"+fd.net+"/"+name+"/data", os.O_RDWR, 0)
	if err != nil {
		listen.Close()
		ctl.Close()
		return nil, err
	}

	if target != "wasip1/wasm" {
		t.Skip()
	}

	switch os.Getenv("GOWASIRUNTIME") {
	case "wasmer":
		t.Skip("wasmer does not support non-blocking I/O")
	}

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

			fifos := make([]*fifo, 8)
			for i := range fifos {

package main

import (
	"fmt"
	"log"
	"os"
)

func main() {
	if os.Geteuid() == os.Getuid() {
		os.Exit(99)
	}

	fmt.Fprintf(os.Stdout, "GOTRACEBACK=%s\n", os.Getenv("GOTRACEBACK"))
	f, err := os.OpenFile(os.Getenv("TEST_OUTPUT"), os.O_CREATE|os.O_RDWR, 0600)
	if err != nil {
		log.Fatalf("os.Open failed: %s", err)
	}
	defer f.Close()
	fmt.Fprintf(os.Stderr, "hello\n")

	if err != nil {
		t.Fatalf("open ErrPathNUL tempfile: %s", err)
	}
	defer os.Remove(f.Name())
	defer f.Close()
	f2, err := os.OpenFile(f.Name(), os.O_RDWR, 0600)
	if err != nil {
		t.Fatalf("open ErrPathNUL: %s", err)
	}
	f2.Close()
	f2, err = os.OpenFile(f.Name()+"\x00", os.O_RDWR, 0600)
	if err == nil {
		f2.Close()
		t.Fatal("Open should have failed")
	}
}