lib-storage: Add storage_class_flag for secondary index

diff --git a/src/lib-storage/mail-storage-private.h b/src/lib-storage/mail-storage-private.h
index 6761ab436d3cc2d078c5e01f5a3bbbb98ac81f1e..bdea31d0d2ab1e5844a490f10f1cf1c285a8a73f 100644 (file)
--- a/src/lib-storage/mail-storage-private.h
+++ b/src/lib-storage/mail-storage-private.h
@@ -109,6 +109,8 @@ enum mail_storage_class_flags {
        /* Storage deletes all files internally - mailbox list's
           delete_mailbox() shouldn't delete anything itself. */
        MAIL_STORAGE_CLASS_FLAG_NO_LIST_DELETES = 0x400,
+       /* Storage creates a secondary index */
+       MAIL_STORAGE_CLASS_FLAG_SECONDARY_INDEX = 0x800,
 };
 
 struct mail_binary_cache {