move_attachments.go RawHistoryFolder

1package daemon
2
3// sameMoveAttachmentsLocked reports whether the source membership is unchanged
4// since admission. Caller holds the source session lock.
5func sameMoveAttachmentsLocked(sess *session, admitted []*attachedClient) bool {
6	if sess == nil || len(sess.attachments) != len(admitted) {
7		return false
8	}
9	for _, ac := range admitted {
10		if !attachmentRegisteredLocked(sess, ac) {
11			return false
12		}
13	}
14	return true
15}
16
17// detachMoveAttachmentsLocked invalidates every attachment of a source session
18// that became empty. Moves never transfer attachment ownership to the target;
19// each connection is retired independently after the shared content move.
20// Caller holds the source session lock and the affected attachment gates are
21// frozen.
22func detachMoveAttachmentsLocked(sess *session, transports map[*attachedClient]transportSnapshot) []detachedAttachmentSnapshot {
23	if sess == nil || len(sess.attachments) == 0 {
24		return nil
25	}
26	attachments := sess.snapshotAttachmentsLocked()
27	retired := make([]detachedAttachmentSnapshot, 0, len(attachments))
28	for _, ac := range attachments {
29		retired = append(retired, detachedAttachmentSnapshot{ac: ac, transport: transports[ac]})
30		ac.setSession(nil)
31		ac.invalidateFrozenAttachmentCapability()
32	}
33	clear(sess.attachments)
34	return retired
35}