func (fs *fileStat) loadFileId() error {
fs.Lock()
defer fs.Unlock()
if fs.path == "" {
// already done
return nil
}
pathp, err := syscall.UTF16PtrFromString(fs.path)
if err != nil {
return err
}
h, err := syscall.CreateFile(pathp, 0, 0, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_BACKUP_SEMANTICS, 0)
if err != nil {
return err
}
defer syscall.CloseHandle(h)
var i syscall.ByHandleFileInformation
err = syscall.GetFileInformationByHandle(syscall.Handle(h), &i)
if err != nil {
return err
}
fs.path = ""
fs.vol = i.VolumeSerialNumber
fs.idxhi = i.FileIndexHigh
fs.idxlo = i.FileIndexLow
return nil
}
// Stat returns the FileInfo structure describing file.
// If there is an error, it will be of type *PathError.
func (file *File) Stat() (fi FileInfo, err error) {
if file == nil || file.fd < 0 {
return nil, syscall.EINVAL
}
if file.isdir() {
// I don't know any better way to do that for directory
return Stat(file.name)
}
if file.name == DevNull {
return &devNullStat, nil
}
var d syscall.ByHandleFileInformation
e := syscall.GetFileInformationByHandle(syscall.Handle(file.fd), &d)
if e != nil {
return nil, &PathError{"GetFileInformationByHandle", file.name, e}
}
return &fileStat{
name: basename(file.name),
sys: syscall.Win32FileAttributeData{
FileAttributes: d.FileAttributes,
CreationTime: d.CreationTime,
LastAccessTime: d.LastAccessTime,
LastWriteTime: d.LastWriteTime,
FileSizeHigh: d.FileSizeHigh,
FileSizeLow: d.FileSizeLow,
},
vol: d.VolumeSerialNumber,
idxhi: d.FileIndexHigh,
idxlo: d.FileIndexLow,
}, nil
}
func (s *winSys) loadFileId() error {
if s.path == "" {
// already done
return nil
}
s.Lock()
defer s.Unlock()
pathp, e := syscall.UTF16PtrFromString(s.path)
if e != nil {
return e
}
h, e := syscall.CreateFile(pathp, 0, 0, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_BACKUP_SEMANTICS, 0)
if e != nil {
return e
}
defer syscall.CloseHandle(h)
var i syscall.ByHandleFileInformation
e = syscall.GetFileInformationByHandle(syscall.Handle(h), &i)
if e != nil {
return e
}
s.path = ""
s.vol = i.VolumeSerialNumber
s.idxhi = i.FileIndexHigh
s.idxlo = i.FileIndexLow
return nil
}
func (file *File) statFile(name string) (fi *FileInfo, err Error) {
var stat syscall.ByHandleFileInformation
if ok, e := syscall.GetFileInformationByHandle(int32(file.fd), &stat); !ok {
return nil, &PathError{"stat", file.name, Errno(e)}
}
return fileInfoFromByHandleInfo(new(FileInfo), file.name, &stat), nil
}
func getIno(path string) (ino *inode, err error) {
pathp, e := syscall.UTF16PtrFromString(path)
if e != nil {
return nil, e
}
h, e := syscall.CreateFile(pathp,
syscall.FILE_LIST_DIRECTORY,
syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
nil, syscall.OPEN_EXISTING,
syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OVERLAPPED, 0)
if e != nil {
return nil, os.NewSyscallError("CreateFile", e)
}
var fi syscall.ByHandleFileInformation
if e = syscall.GetFileInformationByHandle(h, &fi); e != nil {
syscall.CloseHandle(h)
return nil, os.NewSyscallError("GetFileInformationByHandle", e)
}
ino = &inode{
handle: h,
volume: fi.VolumeSerialNumber,
index: uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow),
}
return ino, nil
}
// Stat returns the FileInfo structure describing file.
// It returns the FileInfo and an error, if any.
func (file *File) Stat() (fi FileInfo, err error) {
if file == nil || file.fd < 0 {
return nil, EINVAL
}
if file.isdir() {
// I don't know any better way to do that for directory
return Stat(file.name)
}
var d syscall.ByHandleFileInformation
e := syscall.GetFileInformationByHandle(syscall.Handle(file.fd), &d)
if e != nil {
return nil, &PathError{"GetFileInformationByHandle", file.name, e}
}
return toFileInfo(basename(file.name), d.FileAttributes, d.FileSizeHigh, d.FileSizeLow, d.CreationTime, d.LastAccessTime, d.LastWriteTime), nil
}
func loadFileId(filepath string) (string, error) {
pathp, err := syscall.UTF16PtrFromString(filepath)
if err != nil {
return "", err
}
h, err := syscall.CreateFile(pathp, 0, 0, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_BACKUP_SEMANTICS, 0)
if err != nil {
return "", err
}
defer syscall.CloseHandle(h)
var i syscall.ByHandleFileInformation
err = syscall.GetFileInformationByHandle(syscall.Handle(h), &i)
if err != nil {
return "", err
}
return fmt.Sprintf("%x-%x-%x", i.VolumeSerialNumber, i.FileIndexHigh, i.FileIndexLow), nil
}
// Stat returns the FileInfo structure describing file.
// If there is an error, it will be of type *PathError.
func (file *File) Stat() (FileInfo, error) {
if file == nil {
return nil, ErrInvalid
}
if file == nil || file.fd < 0 {
return nil, syscall.EINVAL
}
if file.isdir() {
// I don't know any better way to do that for directory
return Stat(file.dirinfo.path)
}
if file.name == DevNull {
return &devNullStat, nil
}
ft, err := syscall.GetFileType(file.fd)
if err != nil {
return nil, &PathError{"GetFileType", file.name, err}
}
if ft == syscall.FILE_TYPE_PIPE {
return &fileStat{name: basename(file.name), pipe: true}, nil
}
var d syscall.ByHandleFileInformation
err = syscall.GetFileInformationByHandle(file.fd, &d)
if err != nil {
return nil, &PathError{"GetFileInformationByHandle", file.name, err}
}
return &fileStat{
name: basename(file.name),
sys: syscall.Win32FileAttributeData{
FileAttributes: d.FileAttributes,
CreationTime: d.CreationTime,
LastAccessTime: d.LastAccessTime,
LastWriteTime: d.LastWriteTime,
FileSizeHigh: d.FileSizeHigh,
FileSizeLow: d.FileSizeLow,
},
vol: d.VolumeSerialNumber,
idxhi: d.FileIndexHigh,
idxlo: d.FileIndexLow,
pipe: false,
}, nil
}
// Stat returns the FileInfo structure describing file.
// If there is an error, it will be of type *PathError.
func (file *File) Stat() (fi FileInfo, err error) {
if file == nil || file.fd < 0 {
return nil, syscall.EINVAL
}
if file.isdir() {
// I don't know any better way to do that for directory
return Stat(file.name)
}
if file.name == DevNull {
return statDevNull()
}
var d syscall.ByHandleFileInformation
e := syscall.GetFileInformationByHandle(syscall.Handle(file.fd), &d)
if e != nil {
return nil, &PathError{"GetFileInformationByHandle", file.name, e}
}
return &fileStat{
name: basename(file.name),
size: mkSize(d.FileSizeHigh, d.FileSizeLow),
modTime: mkModTime(d.LastWriteTime),
mode: mkMode(d.FileAttributes),
sys: mkSysFromFI(&d),
}, nil
}
