From: Marco Bettini <marco.bettini@open-xchange.com>
Date: Fri, 21 Jul 2023 10:41:59 +0000 (+0000)
Subject: virtual: struct virtual_mailbox_vfuncs - Add get_virtual_backend_last_uid()
X-Git-Tag: 2.4.0~2540
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d517c337ab6f0d175adc62b56d798151843d6b3b;p=thirdparty%2Fdovecot%2Fcore.git

virtual: struct virtual_mailbox_vfuncs - Add get_virtual_backend_last_uid()
---

diff --git a/src/lib-storage/mail-storage-private.h b/src/lib-storage/mail-storage-private.h
index 2d40b97c2c..1438ff8e6d 100644
--- a/src/lib-storage/mail-storage-private.h
+++ b/src/lib-storage/mail-storage-private.h
@@ -226,6 +226,8 @@ struct virtual_mailbox_vfuncs {
 	void (*get_virtual_backend_boxes)(struct mailbox *box,
 					  ARRAY_TYPE(mailboxes) *mailboxes,
 					  bool only_with_msgs);
+	uint32_t (*get_virtual_backend_last_uid)(struct mailbox *box,
+						 struct mailbox *bbox);
 };
 
 struct mailbox_vfuncs {
diff --git a/src/plugins/virtual/virtual-storage.c b/src/plugins/virtual/virtual-storage.c
index 33c38b9fed..6217327395 100644
--- a/src/plugins/virtual/virtual-storage.c
+++ b/src/plugins/virtual/virtual-storage.c
@@ -861,6 +861,27 @@ virtual_get_virtual_backend_boxes(struct mailbox *box,
 	}
 }
 
+/* This function is meant to be called only with mailboxes retrieved from
+   virtual_get_virtual_backend_boxes() and to be invoked with the same box
+   argument as used in that function. */
+static uint32_t
+virtual_get_virtual_backend_last_uid(struct mailbox *box, struct mailbox *bbox)
+{
+	struct virtual_mailbox *mbox =
+		container_of(box, struct virtual_mailbox, box);
+
+	struct virtual_backend_box *vbox;
+	array_foreach_elem(&mbox->backend_boxes, vbox) {
+		if (vbox->box == bbox) {
+			i_assert(vbox->sync_next_uid > 0);
+			return vbox->sync_next_uid - 1;
+		}
+	}
+
+	i_panic("Backend box '%s' unexpectedly not found in virtual box '%s's backends",
+		bbox->name, box->name);
+}
+
 static bool virtual_is_inconsistent(struct mailbox *box)
 {
 	struct virtual_mailbox *mbox =
@@ -965,4 +986,5 @@ struct virtual_mailbox_vfuncs virtual_mailbox_vfuncs = {
 	.get_virtual_uids = virtual_get_virtual_uids,
 	.get_virtual_uid_map = virtual_get_virtual_uid_map,
 	.get_virtual_backend_boxes = virtual_get_virtual_backend_boxes,
+	.get_virtual_backend_last_uid = virtual_get_virtual_backend_last_uid,
 };