func (BasicFilesystem) ReadSymlink(path string) (string, LinkTargetType, error) {
ptr, err := syscall.UTF16PtrFromString(path)
if err != nil {
return "", LinkTargetUnknown, err
}
handle, err := syscall.CreateFile(ptr, 0, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_BACKUP_SEMANTICS|win32FileFlagOpenReparsePoint, 0)
if err != nil || handle == syscall.InvalidHandle {
return "", LinkTargetUnknown, err
}
defer syscall.Close(handle)
var ret uint16
var data reparseData
r1, _, err := syscall.Syscall9(procDeviceIoControl.Addr(), 8, uintptr(handle), win32FsctlGetReparsePoint, 0, 0, uintptr(unsafe.Pointer(&data)), unsafe.Sizeof(data), uintptr(unsafe.Pointer(&ret)), 0, 0)
if r1 == 0 {
return "", LinkTargetUnknown, err
}
tt := LinkTargetUnknown
if attr, err := syscall.GetFileAttributes(ptr); err == nil {
if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
tt = LinkTargetDirectory
} else {
tt = LinkTargetFile
}
}
return osutil.NormalizedFilename(data.printName()), tt, nil
}
// Remove removes the named file or directory.
// If there is an error, it will be of type *PathError.
func Remove(name string) error {
p, e := syscall.UTF16PtrFromString(name)
if e != nil {
return &PathError{"remove", name, e}
}
// Go file interface forces us to know whether
// name is a file or directory. Try both.
e = syscall.DeleteFile(p)
if e == nil {
return nil
}
e1 := syscall.RemoveDirectory(p)
if e1 == nil {
return nil
}
// Both failed: figure out which error to return.
if e1 != e {
a, e2 := syscall.GetFileAttributes(p)
if e2 != nil {
e = e2
} else {
if a&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
e = e1
}
}
}
return &PathError{"remove", name, e}
}
func Read(path string) (string, uint32, error) {
ptr, err := syscall.UTF16PtrFromString(path)
if err != nil {
return "", protocol.FlagSymlinkMissingTarget, err
}
handle, err := syscall.CreateFile(ptr, 0, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_BACKUP_SEMANTICS|Win32FileFlagOpenReparsePoint, 0)
if err != nil || handle == syscall.InvalidHandle {
return "", protocol.FlagSymlinkMissingTarget, err
}
defer syscall.Close(handle)
var ret uint16
var data reparseData
r1, _, err := syscall.Syscall9(procDeviceIoControl.Addr(), 8, uintptr(handle), Win32FsctlGetReparsePoint, 0, 0, uintptr(unsafe.Pointer(&data)), unsafe.Sizeof(data), uintptr(unsafe.Pointer(&ret)), 0, 0)
if r1 == 0 {
return "", protocol.FlagSymlinkMissingTarget, err
}
var flags uint32
attr, err := syscall.GetFileAttributes(ptr)
if err != nil {
flags = protocol.FlagSymlinkMissingTarget
} else if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
flags = protocol.FlagDirectory
}
return osutil.NormalizedFilename(data.PrintName()), flags, nil
}
func GetFileAttributes(path string) (uint32, error) {
cpath, cpathErr := syscall.UTF16PtrFromString(path)
if cpathErr != nil {
return 0, cpathErr
}
return syscall.GetFileAttributes(cpath)
}
func IsSymlink(path string) (bool, error) {
ptr, err := syscall.UTF16PtrFromString(path)
if err != nil {
return false, err
}
attr, err := syscall.GetFileAttributes(ptr)
if err != nil {
return false, err
}
return attr&FILE_ATTRIBUTE_REPARSE_POINT != 0, nil
}
func getDir(pathname string) (dir string, err error) {
attr, e := syscall.GetFileAttributes(syscall.StringToUTF16Ptr(pathname))
if e != nil {
return "", os.NewSyscallError("GetFileAttributes", e)
}
if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
dir = pathname
} else {
dir, _ = filepath.Split(pathname)
dir = filepath.Clean(dir)
}
return
}
func (t tempNamer) Show(path string) error {
p, err := syscall.UTF16PtrFromString(path)
if err != nil {
return err
}
attrs, err := syscall.GetFileAttributes(p)
if err != nil {
return err
}
attrs &^= syscall.FILE_ATTRIBUTE_HIDDEN
return syscall.SetFileAttributes(p, attrs)
}
func HideFile(path string) error {
p, err := syscall.UTF16PtrFromString(path)
if err != nil {
return err
}
attrs, err := syscall.GetFileAttributes(p)
if err != nil {
return err
}
attrs |= syscall.FILE_ATTRIBUTE_HIDDEN
return syscall.SetFileAttributes(p, attrs)
}
func IsHidden(f File) bool {
fName := filepath.Base(f.FileName())
if strings.HasPrefix(fName, ".") && len(fName) > 1 {
return true
}
p, e := syscall.UTF16PtrFromString(f.FileName())
if e != nil {
return false
}
attrs, e := syscall.GetFileAttributes(p)
if e != nil {
return false
}
return attrs&syscall.FILE_ATTRIBUTE_HIDDEN != 0
}
func (dp DiskPersistor) makeDirectory() error {
dir := filepath.Dir(dp.filePath)
err := os.MkdirAll(dir, dirPermissions)
if err != nil {
return err
}
p, err := syscall.UTF16PtrFromString(dir)
if err != nil {
return err
}
attrs, err := syscall.GetFileAttributes(p)
if err != nil {
return err
}
return syscall.SetFileAttributes(p, attrs|syscall.FILE_ATTRIBUTE_HIDDEN)
}
