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| author | Max Reitz | 2018-05-09 23:53:36 +0200 |
|---|---|---|
| committer | Max Reitz | 2018-06-11 16:18:45 +0200 |
| commit | f45b638f9f967cdbea4e24704bd16a858ddcde03 (patch) | |
| tree | c55ad38826998619b3768fa17339b783f0104b49 /tests/qemu-iotests | |
| parent | block/file-posix: File locking during creation (diff) | |
| download | qemu-f45b638f9f967cdbea4e24704bd16a858ddcde03.tar.gz qemu-f45b638f9f967cdbea4e24704bd16a858ddcde03.tar.xz qemu-f45b638f9f967cdbea4e24704bd16a858ddcde03.zip | |
iotests: Add creation test to 153
This patch adds a test case to 153 which tries to overwrite an image
(using qemu-img create) while it is in use. Without the original user
explicitly sharing the necessary permissions (writing and truncation),
this should not be allowed.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20180509215336.31304-4-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'tests/qemu-iotests')
| -rwxr-xr-x | tests/qemu-iotests/153 | 18 | ||||
| -rw-r--r-- | tests/qemu-iotests/153.out | 13 |
2 files changed, 31 insertions, 0 deletions
diff --git a/tests/qemu-iotests/153 b/tests/qemu-iotests/153 index ec508c758f..673813cd39 100755 --- a/tests/qemu-iotests/153 +++ b/tests/qemu-iotests/153 @@ -137,6 +137,24 @@ for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do _run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1 _run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}" _run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}" + + # qemu-img create does not support -U + if [ -z "$L" ]; then + _run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \ + -b ${TEST_IMG}.base + # Read the file format. It used to be the case that + # file-posix simply truncated the file, but the qcow2 + # driver then failed to format it because it was unable + # to acquire the necessary WRITE permission. However, the + # truncation was already wrong, and the whole process + # resulted in the file being completely empty and thus its + # format would be detected to be raw. + # So we read it here to see that creation either completed + # successfully (thus the format is qcow2) or it aborted + # before the file was changed at all (thus the format stays + # qcow2). + _img_info -U | grep 'file format' + fi done _send_qemu_cmd $h "{ 'execute': 'quit', }" "" echo diff --git a/tests/qemu-iotests/153.out b/tests/qemu-iotests/153.out index 2510762ba1..3492ba7a29 100644 --- a/tests/qemu-iotests/153.out +++ b/tests/qemu-iotests/153.out @@ -92,6 +92,11 @@ _qemu_img_wrapper bench -w -c 1 TEST_DIR/t.qcow2 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock Is another process using the image? +_qemu_img_wrapper create -f qcow2 TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base +qemu-img: TEST_DIR/t.qcow2: Failed to get "write" lock +Is another process using the image? +file format: IMGFMT + == Running utility commands -U == _qemu_io_wrapper -U -c read 0 512 TEST_DIR/t.qcow2 @@ -209,6 +214,11 @@ _qemu_img_wrapper bench -w -c 1 TEST_DIR/t.qcow2 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock Is another process using the image? +_qemu_img_wrapper create -f qcow2 TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base +qemu-img: TEST_DIR/t.qcow2: Failed to get "write" lock +Is another process using the image? +file format: IMGFMT + == Running utility commands -U == _qemu_io_wrapper -U -c read 0 512 TEST_DIR/t.qcow2 @@ -309,6 +319,9 @@ _qemu_img_wrapper bench -c 1 TEST_DIR/t.qcow2 _qemu_img_wrapper bench -w -c 1 TEST_DIR/t.qcow2 +_qemu_img_wrapper create -f qcow2 TEST_DIR/t.qcow2 -b TEST_DIR/t.qcow2.base +file format: IMGFMT + == Running utility commands -U == _qemu_io_wrapper -U -c read 0 512 TEST_DIR/t.qcow2 |