return 0, errno
	}

	return int(fd), nil
}

func Fstatat(dirfd int, path string, stat *syscall.Stat_t, flags int) error {
	p, err := syscall.BytePtrFromString(path)
	if err != nil {
		return err
	}

	_, _, errno := syscall6(uintptr(unsafe.Pointer(&procFstatat)), 4, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(unsafe.Pointer(stat)), uintptr(flags), 0, 0)
	if errno != 0 {
		return errno
	}

	return nil

// limitations under the License.

package nodeagent

import (
	"fmt"
	"io/fs"
	"syscall"
)

func GetInode(fi fs.FileInfo) (uint64, error) {
	if stat, ok := fi.Sys().(*syscall.Stat_t); ok {
		return stat.Ino, nil
	}
	return 0, fmt.Errorf("unable to get inode")

  const std::string path = GetURIForPath("StatFile");
  WriteString(path, "test");
  ASSERT_TF_OK(status_);

  TF_FileStatistics stat;
  tf_gcs_filesystem::Stat(filesystem_, path.c_str(), &stat, status_);
  EXPECT_TF_OK(status_);
  EXPECT_EQ(4, stat.length);
  EXPECT_FALSE(stat.is_directory);
}

TEST_F(GCSFilesystemTest, RenameFile) {
  tf_gcs_filesystem::Init(filesystem_, status_);
  ASSERT_TF_OK(status_);

	// on the file. On NFS, the Getgroups groups are
	// basically useless.
	f := newFile("TestChown", t)
	defer Remove(f.Name())
	defer f.Close()
	dir, err := f.Stat()
	if err != nil {
		t.Fatalf("stat %s: %s", f.Name(), err)
	}

	// Can't change uid unless root, but can try
	// changing the group id. First try our current group.
	gid := Getgid()
	t.Log("gid:", gid)

		t.Fatal(err)
	}

	// Set mtime of the file in the past.
	past := time.Now().Add(-time.Hour)
	if err := os.Chtimes(fn, past, past); err != nil {
		t.Fatal(err)
	}

	info, err := os.Stat(fn)
	if err != nil {
		t.Fatal(err)
	}

	defer func() { *write = false }()
	*write = true

	initParserMode()
	initRewrite()

	const maxWeight = 2 << 20
	var buf, errBuf strings.Builder

func GetOwnerLinux(pathname string) (int64, int64, error) {
	info, err := os.Stat(pathname)
	if err != nil {
		return -1, -1, err
	}
	stat := info.Sys().(*syscall.Stat_t)
	return int64(stat.Uid), int64(stat.Gid), nil
}

// GetModeLinux is shared between Linux and NsEnterMounter
func GetModeLinux(pathname string) (os.FileMode, error) {
	info, err := os.Stat(pathname)
	if err != nil {
		return 0, err
	}

	. "io/ioutil"
	"os"
	"path/filepath"
	"runtime"
	"testing"
)

func checkSize(t *testing.T, path string, size int64) {
	dir, err := os.Stat(path)
	if err != nil {
		t.Fatalf("Stat %q (looking for size %d): %s", path, size, err)
	}
	if dir.Size() != size {
		t.Errorf("Stat %q: size %d want %d", path, dir.Size(), size)
	}
}

func TestReadFile(t *testing.T) {
	filename := "rumpelstilzchen"

	"fmt"
	"os"
	"path/filepath"
)

// IsUnixDomainSocket returns whether a given file is a AF_UNIX socket file
func IsUnixDomainSocket(filePath string) (bool, error) {
	fi, err := os.Stat(filePath)
	if err != nil {
		return false, fmt.Errorf("stat file %s failed: %v", filePath, err)
	}
	if fi.Mode()&os.ModeSocket == 0 {
		return false, nil
	}
	return true, nil
}

// IsAbs is same as filepath.IsAbs on Unix.

}

type localDisk struct {
	index int
	path  string
}

func getMajorMinor(path string) (string, error) {
	var stat syscall.Stat_t
	if err := syscall.Stat(path, &stat); err != nil {
		return "", fmt.Errorf("unable to stat `%s`: %w", path, err)
	}

	devID := uint64(stat.Dev)
	major := (devID & 0x00000000000fff00) >> 8
	major |= (devID & 0xfffff00000000000) >> 32
	minor := (devID & 0x00000000000000ff) >> 0

import (
	"syscall"
	"unsafe"
)

//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
//sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
//sys	Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)