Fix for ntfsclone crash (RHBZ#1601146).

(cherry picked from commit b581507257543d3228a3cb8f4e08d4a67f2c3e64)

libguestfs-winsupport.spec

@@ -5,7 +5,7 @@
 
 Name:           libguestfs-winsupport
 Version:        8.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Add support for Windows guests to virt-v2v and virt-p2v
 
 URL:            http://www.ntfs-3g.org/
@@ -21,6 +21,10 @@ Source0:        http://tuxera.com/opensource/ntfs-3g_ntfsprogs-%{ntfs_version}.t
 Patch0:         ntfs-3g_ntfsprogs-2011.10.9-RC-ntfsck-unsupported-return-0.patch
 Patch1:         check-mftmirr.patch
 Patch2:         ntfs-3g-big-sectors.patch
+# Fix for ntfsclone crash.
+# Discussed with upstream developer but not upstream yet, see:
+# https://bugzilla.redhat.com/show_bug.cgi?id=1601146#c4
+Patch3:         ntfsclone-full-clusters-bz1601146.patch
 BuildRequires:  libtool, libattr-devel
 BuildRequires:  libconfig-devel, libgcrypt-devel, gnutls-devel, libuuid-devel
 
@@ -35,6 +39,7 @@ virt-v2v and virt-p2v programs.
 %patch0 -p1 -b .unsupported
 %patch1 -p0 -b .check-mftmirr
 %patch2 -p0 -b .big-sectors
+%patch3 -p0 -b .ntfsclone
 
 
 %build
@@ -98,6 +103,9 @@ popd
 
 
 %changelog
+* Mon Jul 16 2018 Richard W.M. Jones <rjones@redhat.com> - 8.0-2
+- Fix for ntfsclone crash (RHBZ#1601146).
+
 * Wed Jul 11 2018 Richard W.M. Jones <rjones@redhat.com> - 8.0-1
 - Rebase to 2017.3.23.
 - Remove patches which are now upstream.

ntfsclone-full-clusters-bz1601146.patch

@@ -0,0 +1,81 @@
+--- ntfsprogs/ntfsclone.c	2018-05-16 18:46:47.114964000 +0200
++++ ntfsprogs/ntfsclone.c	2018-07-16 14:03:20.273809100 +0200
+@@ -776,6 +776,10 @@ 
+ 
+ 		/* possible partial cluster holding the backup boot sector */
+ 	backup_bootsector = (lcn + 1)*csize >= full_device_size;
++	buff = (char*)ntfs_malloc(csize);
++	if (!buff)
++		err_exit("Not enough memory");
++
+ 	if (backup_bootsector) {
+ 		csize = full_device_size - lcn*csize;
+ 		if (csize < 0) {
+@@ -783,10 +787,6 @@ 
+ 		}
+ 	}
+ 
+-	buff = (char*)ntfs_malloc(csize);
+-	if (!buff)
+-		err_exit("Not enough memory");
+-
+ // need reading when not about to write ?
+ 	if (read_all(fd, buff, csize) == -1) {
+ 
+@@ -1507,6 +1507,7 @@ 
+ 	s64 mft_no;
+ 	u32 mft_record_size;
+ 	u32 csize;
++	u32 buff_size;
+ 	u32 bytes_per_sector;
+ 	u32 records_per_set;
+ 	u32 clusters_per_set;
+@@ -1524,15 +1525,18 @@ 
+ 		/*
+ 		 * Depending on the sizes, there may be several records
+ 		 * per cluster, or several clusters per record.
++		 * Anyway, full clusters are needed for rescuing bad ones.
+ 		 */
+ 	if (csize >= mft_record_size) {
+ 		records_per_set = csize/mft_record_size;
+ 		clusters_per_set = 1;
++		buff_size = csize;
+ 	} else {
+ 		clusters_per_set = mft_record_size/csize;
+ 		records_per_set = 1;
++		buff_size = mft_record_size;
+ 	}
+-	buff = (char*)ntfs_malloc(mft_record_size);
++	buff = (char*)ntfs_malloc(buff_size);
+ 	if (!buff)
+ 		err_exit("Not enough memory");
+ 
+@@ -1585,6 +1589,7 @@ 
+ 	void *fd;
+ 	u32 indx_record_size;
+ 	u32 csize;
++	u32 buff_size;
+ 	u32 bytes_per_sector;
+ 	u32 records_per_set;
+ 	u32 clusters_per_set;
+@@ -1601,16 +1606,19 @@ 
+ 		/*
+ 		 * Depending on the sizes, there may be several records
+ 		 * per cluster, or several clusters per record.
++		 * Anyway, full clusters are needed for rescuing bad ones.
+ 		 */
+ 	indx_record_size = image->ni->vol->indx_record_size;
+ 	if (csize >= indx_record_size) {
+ 		records_per_set = csize/indx_record_size;
+ 		clusters_per_set = 1;
++		buff_size = csize;
+ 	} else {
+ 		clusters_per_set = indx_record_size/csize;
+ 		records_per_set = 1;
++		buff_size = indx_record_size;
+ 	}
+-	buff = (char*)ntfs_malloc(indx_record_size);
++	buff = (char*)ntfs_malloc(buff_size);
+ 	if (!buff)
+ 		err_exit("Not enough memory");
+