s3: Fix bug opening streams with truncating disposition

Do not attempt to delete streams on a truncating open, if the name
we're opening is itself a stream.

Port 176e8857203944bc332844b700749120ce90c891 to standard open path

diff --git a/source3/smbd/open.c b/source3/smbd/open.c
index f7a52d7bd2bb55d2ea3bfa114618e68654725254..9971ffa6798287c106124b578cceced3476dca99 100644 (file)
--- a/source3/smbd/open.c
+++ b/source3/smbd/open.c
@@ -1975,7 +1975,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
        SMB_ASSERT(lck != NULL);
 
        /* Delete streams if create_disposition requires it */
        SMB_ASSERT(lck != NULL);
 
        /* Delete streams if create_disposition requires it */

-       if (file_existed && clear_ads) {
+       if (file_existed && clear_ads && !is_ntfs_stream_name(fname)) {

                status = delete_all_streams(conn, fname);
                if (!NT_STATUS_IS_OK(status)) {
                        TALLOC_FREE(lck);
                status = delete_all_streams(conn, fname);
                if (!NT_STATUS_IS_OK(status)) {
                        TALLOC_FREE(lck);