From: Timo Sirainen <tss@iki.fi>
Date: Thu, 15 Oct 2009 19:56:06 +0000 (-0400)
Subject: lib-index: Give nicer error if index's log position suddenly goes backwards.
X-Git-Tag: 2.0.alpha2~92
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1da9587dfb6632ac6446ad12b09fdf77c8542e2c;p=thirdparty%2Fdovecot%2Fcore.git

lib-index: Give nicer error if index's log position suddenly goes backwards.

--HG--
branch : HEAD
---

diff --git a/src/lib-index/mail-index-view-sync.c b/src/lib-index/mail-index-view-sync.c
index 79e5cabab6..1899b62872 100644
--- a/src/lib-index/mail-index-view-sync.c
+++ b/src/lib-index/mail-index-view-sync.c
@@ -55,6 +55,17 @@ view_sync_set_log_view_range(struct mail_index_view *view, bool sync_expunges,
 	end_seq = hdr->log_file_seq;
 	end_offset = hdr->log_file_head_offset;
 
+	if (end_seq < view->log_file_head_seq ||
+	    (end_seq == view->log_file_head_seq &&
+	     end_offset < view->log_file_head_offset)) {
+		mail_index_set_error(view->index,
+			"%s log position went backwards "
+			"(%u,%"PRIuUOFF_T" < %u,%"PRIuUOFF_T")",
+			view->index->filepath, end_seq, end_offset,
+			view->log_file_head_seq, view->log_file_head_offset);
+		return -1;
+	}
+
 	for (;;) {
 		/* the view begins from the first non-synced transaction */
 		ret = mail_transaction_log_view_set(view->log_view,