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[Qemu-devel] [PATCH v2 5/7] qcow2: Add iotest for an image with header.r
From: |
Alberto Garcia |
Subject: |
[Qemu-devel] [PATCH v2 5/7] qcow2: Add iotest for an image with header.refcount_table_offset == 0 |
Date: |
Fri, 3 Nov 2017 16:18:54 +0200 |
This patch adds a simple iotest in which we try to write to an image
with the refcount table offset set to 0.
This scenario was already handled by the existing consistency checks,
but we add an explicit test case for completeness.
Signed-off-by: Alberto Garcia <address@hidden>
---
tests/qemu-iotests/060 | 7 +++++++
tests/qemu-iotests/060.out | 6 ++++++
2 files changed, 13 insertions(+)
diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index 656af50883..dc5a517673 100755
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -277,6 +277,13 @@ _make_test_img 64M
poke_file "$TEST_IMG" "56" "\x00\x00\x00\x00"
$QEMU_IO -c "write 0 64k" "$TEST_IMG" 2>&1 | _filter_testdir | _filter_imgfmt
+echo
+echo "=== Testing incorrect refcount table offset ==="
+echo
+_make_test_img 64M
+poke_file "$TEST_IMG" "48" "\x00\x00\x00\x00\x00\x00\x00\x00"
+$QEMU_IO -c "write 0 64k" "$TEST_IMG" | _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 58456e8487..98f314c16d 100644
--- a/tests/qemu-iotests/060.out
+++ b/tests/qemu-iotests/060.out
@@ -208,4 +208,10 @@ write failed: Input/output error
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
can't open device TEST_DIR/t.IMGFMT: Image does not contain a reference count
table
+
+=== Testing incorrect refcount table offset ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+qcow2: Marking image as corrupt: Preventing invalid allocation of L2 table at
offset 0; further corruption events will be suppressed
+write failed: Input/output error
*** done
--
2.11.0
- Re: [Qemu-devel] [PATCH v2 3/7] qcow2: Prevent allocating compressed clusters at offset 0, (continued)
[Qemu-devel] [PATCH v2 1/7] qcow2: Prevent allocating refcount blocks at offset 0, Alberto Garcia, 2017/11/03
[Qemu-devel] [PATCH v2 7/7] qcow2: Assert that the crypto header does not overlap other metadata, Alberto Garcia, 2017/11/03
[Qemu-devel] [PATCH v2 2/7] qcow2: Prevent allocating L2 tables at offset 0, Alberto Garcia, 2017/11/03
[Qemu-devel] [PATCH v2 6/7] qcow2: Add iotest for an empty refcount table, Alberto Garcia, 2017/11/03
[Qemu-devel] [PATCH v2 5/7] qcow2: Add iotest for an image with header.refcount_table_offset == 0,
Alberto Garcia <=
[Qemu-devel] [PATCH v2 4/7] qcow2: Don't open images with header.refcount_table_clusters == 0, Alberto Garcia, 2017/11/03
Re: [Qemu-devel] [PATCH v2 0/7] Misc qcow2 corruption checks, Max Reitz, 2017/11/03