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qemu-iotests: add qcow2.py set-feature-bit command 

This new command sets feature bits in the image file header:

  qcow2.py set-feature-bit incompatible|compatible|autoclear <bit>

The bit number must be in the range [0, 64).

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
master
Stefan Hajnoczi 2012-06-14 13:58:17 +01:00 committed by Kevin Wolf
parent 8b9ef60de0
commit 1b2eff62fc
1 changed files with 23 additions and 0 deletions
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23
tests/qemu-iotests/qcow2.py
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@ -181,10 +181,33 @@ def cmd_del_header_ext(fd, magic):
h.update(fd)
def cmd_set_feature_bit(fd, group, bit):
try:
bit = int(bit, 0)
if bit < 0 or bit >= 64:
raise ValueError
except:
print "'%s' is not a valid bit number in range [0, 64)" % bit
sys.exit(1)
h = QcowHeader(fd)
if group == 'incompatible':
h.incompatible_features |= 1 << bit
elif group == 'compatible':
h.compatible_features |= 1 << bit
elif group == 'autoclear':
h.autoclear_features |= 1 << bit
else:
print "'%s' is not a valid group, try 'incompatible', 'compatible', or 'autoclear'" % group
sys.exit(1)
h.update(fd)
cmds = [
[ 'dump-header', cmd_dump_header, 0, 'Dump image header and header extensions' ],
[ 'add-header-ext', cmd_add_header_ext, 2, 'Add a header extension' ],
[ 'del-header-ext', cmd_del_header_ext, 1, 'Delete a header extension' ],
[ 'set-feature-bit', cmd_set_feature_bit, 2, 'Set a feature bit'],
]
def main(filename, cmd, args):