mirror of
https://github.com/qemu/qemu.git
synced 2025-10-31 04:06:46 +00:00
7c47752608
Use the program search path to find the Python 3 interpreter.
Patch created mechanically by running:
$ sed -i "s,^#\!/usr/bin/\(env\ \)\?python$,#\!/usr/bin/env python3," \
$(git grep -lF '#!/usr/bin/env python' \
| xargs grep -L 'if __name__.*__main__')
Reported-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Suggested-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200130163232.10446-11-philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
107 lines
3.3 KiB
Python
Executable File
107 lines
3.3 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
#
|
|
# Test for qcow2 bitmap printed information
|
|
#
|
|
# Copyright (c) 2019 Virtuozzo International GmbH
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
import iotests
|
|
import json
|
|
import struct
|
|
from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \
|
|
file_path, img_info_log, log, filter_qemu_io
|
|
|
|
iotests.verify_image_format(supported_fmts=['qcow2'])
|
|
|
|
disk = file_path('disk')
|
|
chunk = 256 * 1024
|
|
bitmap_flag_unknown = 1 << 2
|
|
# flag_offset = 5*cluster_size + flag_offset_in_bitmap_directory_entry
|
|
flag_offset = 0x5000f
|
|
|
|
|
|
def print_bitmap(extra_args):
|
|
log('qemu-img info dump:\n')
|
|
img_info_log(disk, extra_args=extra_args)
|
|
result = json.loads(qemu_img_pipe('info', '--force-share',
|
|
'--output=json', disk))
|
|
if 'bitmaps' in result['format-specific']['data']:
|
|
bitmaps = result['format-specific']['data']['bitmaps']
|
|
log('The same bitmaps in JSON format:')
|
|
log(bitmaps, indent=2)
|
|
else:
|
|
log('No bitmap in JSON format output')
|
|
|
|
|
|
def add_bitmap(bitmap_number, persistent, disabled):
|
|
granularity = 1 << (13 + bitmap_number)
|
|
bitmap_name = 'bitmap-' + str(bitmap_number-1)
|
|
vm = iotests.VM().add_drive(disk)
|
|
vm.launch()
|
|
vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name,
|
|
granularity=granularity, persistent=persistent,
|
|
disabled=disabled)
|
|
vm.shutdown()
|
|
|
|
|
|
def write_to_disk(offset, size):
|
|
write = 'write {} {}'.format(offset, size)
|
|
log(qemu_io('-c', write, disk), filters=[filter_qemu_io])
|
|
|
|
|
|
def toggle_flag(offset):
|
|
with open(disk, "r+b") as f:
|
|
f.seek(offset, 0)
|
|
# Read one byte in a way compatible with Python 2
|
|
flags = struct.unpack("B", f.read(1))
|
|
toggled = flags[0] ^ bitmap_flag_unknown
|
|
f.seek(-1, 1)
|
|
f.write(struct.pack("B", toggled))
|
|
|
|
|
|
qemu_img_create('-f', iotests.imgfmt, disk, '1M')
|
|
|
|
for num in range(1, 4):
|
|
disabled = False
|
|
if num == 2:
|
|
disabled = True
|
|
log('Test {}'.format(num))
|
|
add_bitmap(num, num > 1, disabled)
|
|
write_to_disk((num-1) * chunk, chunk)
|
|
print_bitmap([])
|
|
log('')
|
|
|
|
vm = iotests.VM().add_drive(disk)
|
|
vm.launch()
|
|
num += 1
|
|
log('Test {}\nChecking "in-use" flag...'.format(num))
|
|
print_bitmap(['--force-share'])
|
|
vm.shutdown()
|
|
|
|
num += 1
|
|
log('\nTest {}'.format(num))
|
|
qemu_img_create('-f', iotests.imgfmt, disk, '1M')
|
|
add_bitmap(1, True, False)
|
|
log('Write an unknown bitmap flag \'{}\' into a new QCOW2 image at offset {}'
|
|
.format(hex(bitmap_flag_unknown), flag_offset))
|
|
toggle_flag(flag_offset)
|
|
img_info_log(disk)
|
|
toggle_flag(flag_offset)
|
|
log('Unset the unknown bitmap flag \'{}\' in the bitmap directory entry:\n'
|
|
.format(hex(bitmap_flag_unknown)))
|
|
img_info_log(disk)
|
|
log('Test complete')
|