From: Timo Sirainen <tss@iki.fi>
Date: Sun, 30 Mar 2008 08:41:35 +0000 (+0300)
Subject: Fix to previous optimization: Don't crash if we want to read older data from
X-Git-Tag: 1.1.rc4~10
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7184b2f499d5b8977671e92310148da72170edca;p=thirdparty%2Fdovecot%2Fcore.git

Fix to previous optimization: Don't crash if we want to read older data from
transaction log.

--HG--
branch : HEAD
---

diff --git a/src/lib-index/mail-transaction-log-file.c b/src/lib-index/mail-transaction-log-file.c
index eb88fcb7c6..cb1f2dfc9a 100644
--- a/src/lib-index/mail-transaction-log-file.c
+++ b/src/lib-index/mail-transaction-log-file.c
@@ -1065,7 +1065,7 @@ mail_transaction_log_file_map_mmap(struct mail_transaction_log_file *file,
 		return 0;
 	}
 
-	if (file->buffer != NULL &&
+	if (file->buffer != NULL && file->buffer_offset <= start_offset &&
 	    (uoff_t)st.st_size == file->buffer_offset + file->buffer->used) {
 		/* we already have the whole file mapped */
 		if ((ret = mail_transaction_log_file_sync(file)) < 0)