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From f65ef16bd01c14e252e262ec24ff3ac16e0e335d Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Sat, 13 Jun 2015 16:21:59 +0200
Subject: [PATCH 05/42] iotests: Add test for image header overlap

Message-id: <1434212556-3927-6-git-send-email-mreitz@redhat.com>
Patchwork-id: 66024
O-Subject: [RHEL-7.2 qemu-kvm PATCH 05/42] iotests: Add test for image header overlap
Bugzilla: 1129893
RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
RH-Acked-by: Fam Zheng <famz@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>

BZ: 1129893

Add a test for an image with an unallocated image header; instead of an
assertion, this should result in the image being marked corrupt.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit a42f8a3d05c5598cee893c9cf5ffeee48bacb83e)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 tests/qemu-iotests/060     | 9 +++++++++
 tests/qemu-iotests/060.out | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index 2abd566..5180e23 100644
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -164,6 +164,15 @@ wait_break 0
 write 64k 64k
 resume 0" | $QEMU_IO | _filter_qemu_io
 
+echo
+echo "=== Testing unallocated image header ==="
+echo
+_make_test_img 64M
+# Create L1/L2
+$QEMU_IO -c "$OPEN_RW" -c "write 0 64k" | _filter_qemu_io
+poke_file "$TEST_IMG" "$rb_offset" "\x00\x00"
+$QEMU_IO -c "$OPEN_RW" -c "write 64k 64k" | _filter_qemu_io
+
 # success, all done
 echo "*** done"
 rm -f $seq.full
diff --git a/tests/qemu-iotests/060.out b/tests/qemu-iotests/060.out
index a517948..c27c952 100644
--- a/tests/qemu-iotests/060.out
+++ b/tests/qemu-iotests/060.out
@@ -93,4 +93,12 @@ blkdebug: Suspended request '0'
 write failed: Input/output error
 blkdebug: Resuming request '0'
 aio_write failed: No medium found
+
+=== Testing unallocated image header ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 
+wrote 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qcow2: Preventing invalid write on metadata (overlaps with qcow2_header); image marked as corrupt.
+write failed: Input/output error
 *** done
-- 
1.8.3.1