-
-/*
- * telldir
- *
- * Returns the "position" in the "directory stream" which can be used with
- * seekdir to go back to an old entry. We simply return the value in stat.
- */
-long
-telldir (DIR * dirp)
-{
- errno = 0;
-
- if (!dirp)
- {
- errno = EFAULT;
- return -1;
- }
- return dirp->dd_stat;
-}
-
-/*
- * seekdir
- *
- * Seek to an entry previously returned by telldir. We rewind the directory
- * and call readdir repeatedly until either dd_stat is the position number
- * or -1 (off the end). This is not perfect, in that the directory may
- * have changed while we weren't looking. But that is probably the case with
- * any such system.
- */
-void
-seekdir (DIR * dirp, long lPos)
-{
- errno = 0;
-
- if (!dirp)
- {
- errno = EFAULT;
- return;
- }
-
- if (lPos < -1)
- {
- /* Seeking to an invalid position. */
- errno = EINVAL;
- return;
- }
- else if (lPos == -1)
- {
- /* Seek past end. */
- if (dirp->dd_handle != -1)
- {
- FindClose (dirp->dd_handle);
- }
- dirp->dd_handle = -1;
- dirp->dd_stat = -1;
- }
- else
- {
- /* Rewind and read forward to the appropriate index. */
- rewinddir (dirp);
-
- while ((dirp->dd_stat < lPos) && readdir (dirp))
- ;
- }
-}