"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")

// license that can be found in the LICENSE file.

package main

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

func main() {
	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()
	b, err := io.ReadAll(os.Stdin)
	if err != nil {
		log.Fatalf("io.ReadAll(os.Stdin) failed: %s", err)
	}

import (
	"os"
	"os/exec"
	"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", "")

	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 {

	logFile *os.File
)

func TestMain(m *testing.M) {
	flag.Parse()
	var err error
	logFile, err = os.OpenFile(*logPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
	if os.IsExist(err) {
		*logPath += ".worker"
		logFile, err = os.OpenFile(*logPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
	}
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
	os.Exit(m.Run())
}

func FuzzA(f *testing.F) {

package ioutil

import (
	"io"
	"os"
)

// AppendFile - appends the file "src" to the file "dst"
func AppendFile(dst string, src string, osync bool) error {
	flags := os.O_WRONLY | os.O_APPEND | os.O_CREATE
	if osync {
		flags |= os.O_SYNC
	}
	appendFile, err := os.OpenFile(dst, flags, 0o666)
	if err != nil {
		return err
	}
	defer appendFile.Close()

	srcFile, err := os.Open(src)
	if err != nil {

func Open(name string) (*File, error) {
	return OpenFile(name, os.O_RDONLY, 0)
}

// Create is like os.Create, but returns a write-locked file.
func Create(name string) (*File, error) {
	return OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
}

// Edit creates the named file with mode 0666 (before umask),
// but does not truncate existing contents.
//
// If Edit succeeds, methods on the returned File can be used for I/O.

	switch op {
	case 'p':
		ar = openArchive(os.Args[2], os.O_RDONLY, os.Args[3:])
		ar.scan(ar.printContents)
	case 'r':
		ar = openArchive(os.Args[2], os.O_RDWR|os.O_CREATE, os.Args[3:])
		ar.addFiles()
	case 'c':
		ar = openArchive(os.Args[2], os.O_RDWR|os.O_TRUNC|os.O_CREATE, os.Args[3:])
		ar.addPkgdef()
		ar.addFiles()
	case 't':
		ar = openArchive(os.Args[2], os.O_RDONLY, os.Args[3:])
		ar.scan(ar.tableOfContents)
	case 'x':

	return
}

func createTempFile(exampleName string) *os.File {
	for i := 0; ; i++ {
		name := fmt.Sprintf("%s/go-example-stdout-%s-%d.txt", os.TempDir(), exampleName, i)
		f, err := os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
		if err != nil {
			if os.IsExist(err) {
				continue
			}
			fmt.Fprintf(os.Stderr, "testing: open temp file: %v\n", err)
			os.Exit(1)
		}
		return f
	}

func newTempFile(dir, prefix, suffix string) (*os.File, error) {
	for index := 1; index < 10000; index++ {
		switch f, err := os.OpenFile(filepath.Join(dir, fmt.Sprintf("%s%03d%s", prefix, index, suffix)), os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666); {
		case err == nil:
			return f, nil
		case !os.IsExist(err):
			return nil, err
		}
	}
	// Give up
	return nil, fmt.Errorf("could not create file of the form %s%03d%s", prefix, 1, suffix)