pkg os, type FileInfo interface, Size() int64
pkg os, type FileInfo interface, Sys() interface{}
pkg os, type FileMode uint32
pkg os, type PathError struct
pkg os, type PathError struct, Err error
pkg os, type PathError struct, Op string
pkg os, type PathError struct, Path string
pkg syscall (darwin-amd64), const ImplementsGetwd = false
pkg syscall (darwin-amd64), func Fchflags(string, int) error

		pathErr = &os.PathError{Err: syscall.ENOTEMPTY}
		ok = isSysErrNotEmpty(pathErr)
		if !ok {
			t.Fatalf("Unexpected error expecting %s", syscall.ENOTEMPTY)
		}
	} else {
		pathErr = &os.PathError{Err: syscall.Errno(0x91)}
		ok = isSysErrNotEmpty(pathErr)
		if !ok {
			t.Fatal("Unexpected error expecting 0x91")
		}
	}
	if runtime.GOOS == globalWindowsOSName {
		pathErr = &os.PathError{Err: syscall.Errno(0x03)}

func isSysErrPathNotFound(err error) bool {
	if runtime.GOOS != globalWindowsOSName {
		var pathErr *os.PathError
		if errors.As(err, &pathErr) {
			return pathErr.Err == syscall.ENOENT
		}
		return false
	}
	var pathErr *os.PathError
	if errors.As(err, &pathErr) {
		var errno syscall.Errno
		if errors.As(pathErr.Err, &errno) {
			// ERROR_PATH_NOT_FOUND
			return errno == 0x03

	for ; ; err = syscall.FindNextFile(handle, data) {
		if err != nil {
			if err == syscall.ERROR_NO_MORE_FILES {
				break
			}
			if isSysErrPathNotFound(err) {
				return nil
			}
			err = osErrToFileErr(&os.PathError{
				Op:   "FindNextFile",
				Path: dirPath,
				Err:  err,
			})
			if err == errFileNotFound {
				return nil
			}
			return err
		}
		name := syscall.UTF16ToString(data.FileName[0:])

		fallthrough
	case syscall.O_RDWR:
		fallthrough
	case syscall.O_WRONLY | syscall.O_CREAT:
		fallthrough
	case syscall.O_RDWR | syscall.O_CREAT:
		lockType = syscall.F_WRLCK
	default:
		return nil, &os.PathError{
			Op:   "open",
			Path: path,
			Err:  syscall.EINVAL,
		}
	}

	lock := syscall.Flock_t{
		Start:  0,
		Len:    0,
		Pid:    0,
		Type:   lockType,
		Whence: 0,
	}

		fallthrough
	case syscall.O_RDWR:
		fallthrough
	case syscall.O_WRONLY | syscall.O_CREAT:
		fallthrough
	case syscall.O_RDWR | syscall.O_CREAT:
		lockType |= syscall.LOCK_EX
	default:
		return nil, &os.PathError{
			Op:   "open",
			Path: path,
			Err:  syscall.EINVAL,
		}
	}

	f, err := os.OpenFile(path, flag|syscall.O_SYNC, perm)
	if err != nil {
		return nil, err
	}

pkg os, func IsTimeout(error) bool
pkg os, method (*File) SetDeadline(time.Time) error
pkg os, method (*File) SetReadDeadline(time.Time) error
pkg os, method (*File) SetWriteDeadline(time.Time) error
pkg os, method (*PathError) Timeout() bool
pkg os, method (*SyscallError) Timeout() bool
pkg os, var ErrNoDeadline error
pkg strings, method (*Builder) Grow(int)
pkg strings, method (*Builder) Len() int
pkg strings, method (*Builder) Reset()

	"strings"
	"syscall"
	"unsafe"

	"github.com/minio/minio/internal/bpool"
	"golang.org/x/sys/unix"
)

func access(name string) error {
	if err := unix.Access(name, unix.F_OK); err != nil {
		return &os.PathError{Op: "lstat", Path: name, Err: err}
	}
	return nil
}

// openFileWithFD return 'fd' based file descriptor
func openFileWithFD(name string, flag int, perm os.FileMode) (fd int, err error) {
	switch flag & writeMode {

// leading / or ../ elements.
func (r *Reader) Open(name string) (fs.File, error) {
	r.initFileList()

	if !fs.ValidPath(name) {
		return nil, &fs.PathError{Op: "open", Path: name, Err: fs.ErrInvalid}
	}
	e := r.openLookup(name)
	if e == nil {
		return nil, &fs.PathError{Op: "open", Path: name, Err: fs.ErrNotExist}
	}
	if e.isDir {
		return &openDir{e, r.openReadDir(name), 0}, nil
	}
	rc, err := e.file.Open()

// Collection of basic errors.
var baseErrs = []error{
	errDiskNotFound,
	errFaultyDisk,
	errFaultyRemoteDisk,
}

var baseIgnoredErrs = baseErrs

// Is a one place function which converts all os.PathError
// into a more FS object layer friendly form, converts
// known errors into their typed form for top level
// interpretation.
func osErrToFileErr(err error) error {
	if err == nil {
		return nil
	}