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qcow2_format.py: use tuples instead of lists for fields

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No need in lists: it's a constant variable.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Message-Id: <20200606081806.23897-6-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-06-06 11:17:58 +03:00 committed by Eric Blake
parent eeafed5f6e
commit b2f1415444
1 changed files with 20 additions and 20 deletions
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40
tests/qemu-iotests/qcow2_format.py
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@ -39,29 +39,29 @@ class QcowHeader:
uint32_t = 'I' uint32_t = 'I'
uint64_t = 'Q' uint64_t = 'Q'
fields = [ fields = (
# Version 2 header fields # Version 2 header fields
[uint32_t, '%#x', 'magic'], (uint32_t, '%#x', 'magic'),
[uint32_t, '%d', 'version'], (uint32_t, '%d', 'version'),
[uint64_t, '%#x', 'backing_file_offset'], (uint64_t, '%#x', 'backing_file_offset'),
[uint32_t, '%#x', 'backing_file_size'], (uint32_t, '%#x', 'backing_file_size'),
[uint32_t, '%d', 'cluster_bits'], (uint32_t, '%d', 'cluster_bits'),
[uint64_t, '%d', 'size'], (uint64_t, '%d', 'size'),
[uint32_t, '%d', 'crypt_method'], (uint32_t, '%d', 'crypt_method'),
[uint32_t, '%d', 'l1_size'], (uint32_t, '%d', 'l1_size'),
[uint64_t, '%#x', 'l1_table_offset'], (uint64_t, '%#x', 'l1_table_offset'),
[uint64_t, '%#x', 'refcount_table_offset'], (uint64_t, '%#x', 'refcount_table_offset'),
[uint32_t, '%d', 'refcount_table_clusters'], (uint32_t, '%d', 'refcount_table_clusters'),
[uint32_t, '%d', 'nb_snapshots'], (uint32_t, '%d', 'nb_snapshots'),
[uint64_t, '%#x', 'snapshot_offset'], (uint64_t, '%#x', 'snapshot_offset'),
# Version 3 header fields # Version 3 header fields
[uint64_t, 'mask', 'incompatible_features'], (uint64_t, 'mask', 'incompatible_features'),
[uint64_t, 'mask', 'compatible_features'], (uint64_t, 'mask', 'compatible_features'),
[uint64_t, 'mask', 'autoclear_features'], (uint64_t, 'mask', 'autoclear_features'),
[uint32_t, '%d', 'refcount_order'], (uint32_t, '%d', 'refcount_order'),
[uint32_t, '%d', 'header_length'], (uint32_t, '%d', 'header_length'),
] )
fmt = '>' + ''.join(field[0] for field in fields) fmt = '>' + ''.join(field[0] for field in fields)