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| author | Max Reitz <mreitz@redhat.com> | 2018-02-24 16:40:32 +0100 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2018-03-19 14:58:36 -0500 |
| commit | e59a0cf17b1b9932b65e6fc25d6856976f5e4831 (patch) | |
| tree | f303124257a396e0705ad0231d29c1d428adcbb3 /tests/qemu-iotests/089 | |
| parent | 532fb532847365f61a9c6e1291b6588a43bc1cc4 (diff) | |
block: Handle null backing link
Instead of converting all "backing": null instances into "backing": "",
handle a null value directly in bdrv_open_inherit().
This enables explicitly null backing links for json:{} filenames.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20180224154033.29559-7-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: rebase to qobject_to() parameter order and qapi headers split]
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'tests/qemu-iotests/089')
| -rwxr-xr-x | tests/qemu-iotests/089 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/qemu-iotests/089 b/tests/qemu-iotests/089 index 0b059aba90..aa1ba4a98e 100755 --- a/tests/qemu-iotests/089 +++ b/tests/qemu-iotests/089 @@ -82,6 +82,26 @@ $QEMU_IO_PROG --cache $CACHEMODE \ $QEMU_IO -c 'read -P 42 0 512' "$TEST_IMG" | _filter_qemu_io +echo +echo "=== Testing correct handling of 'backing':null ===" +echo + +_make_test_img -b "$TEST_IMG.base" $IMG_SIZE + +# This should read 42 +$QEMU_IO -c 'read -P 42 0 512' "$TEST_IMG" | _filter_qemu_io + +# This should read 0 +$QEMU_IO -c 'read -P 0 0 512' "json:{\ + 'driver': '$IMGFMT', + 'file': { + 'driver': 'file', + 'filename': '$TEST_IMG' + }, + 'backing': null +}" | _filter_qemu_io + + # Taken from test 071 echo echo "=== Testing blkdebug ===" |