From: Eric Biggers <ebiggers3@gmail.com>
Date: Sat, 24 Oct 2015 19:31:24 +0000 (-0500)
Subject: write.c: don't write integrity table if there is no blob table
X-Git-Tag: v1.8.3~27
X-Git-Url: https://wimlib.net/git/?p=wimlib;a=commitdiff_plain;h=35a448862fb198323481044e0d820c7c631e4dab;hp=c0f97d52b487123a1a68a6a07fa0d9be81ee1f72

write.c: don't write integrity table if there is no blob table

The following commands would produce an invalid integrity table:

	wimcapture empty empty.wim
	wimdelete delete empty.wim 1 --check
---

diff --git a/src/write.c b/src/write.c
index bc7b6ebd..9e396162 100644
--- a/src/write.c
+++ b/src/write.c
@@ -2388,7 +2388,9 @@ finish_write(WIMStruct *wim, int image, int write_flags,
 	}
 
 	/* Write integrity table if needed.  */
-	if (write_flags & WIMLIB_WRITE_FLAG_CHECK_INTEGRITY) {
+	if ((write_flags & WIMLIB_WRITE_FLAG_CHECK_INTEGRITY) &&
+	    wim->out_hdr.blob_table_reshdr.offset_in_wim != 0)
+	{
 		if (write_flags & WIMLIB_WRITE_FLAG_NO_NEW_BLOBS) {
 			/* The XML data we wrote may have overwritten part of
 			 * the old integrity table, so while calculating the new