If ERROR_BUFFER_OVERFLOW is returned, further calls to DosFindNext start the search from the same entry.
If ERROR_EAS_DIDNT_FIT is returned, the buffer is too small to hold the extended attributes (EAs) for the first matching entry being returned. A subsequent call to DosFindNext gets the next matching entry. This enables the search to continue if the extended attributes being returned are too large for the buffer. You can use DosQueryPathInfo to retrieve the extended attributes for the matching entry by using the same EA arguments used for the call to DosFindFirst, and the name that was returned by DosFindFirst,
In the case of ERROR_EAS_DIDNT_FIT, only information for the first matching entry is returned. This is the entry whose extended attributes did not fit in the buffer. The information returned is in the format of Level 2 (FIL_QUERYEASIZE) File Information (FILEFINDBUF4). No further entries are returned in the buffer, even if they could fit in the remaining space.