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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2012-06-14 13:58:17 +0100
committerKevin Wolf <kwolf@redhat.com>2012-06-15 14:03:44 +0200
commit1b2eff62fcd5c68607a239a89b1389da3db2a540 (patch)
tree35c4b9dab1848f7bcbe951eea4fb662d72af5d10 /tests/qemu-iotests/qcow2.py
parent8b9ef60de0f9d4826b46ca9488ccf478fe328796 (diff)
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>
Diffstat (limited to 'tests/qemu-iotests/qcow2.py')
-rwxr-xr-xtests/qemu-iotests/qcow2.py23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py
index e27196aa26..97f37707bc 100755
--- a/tests/qemu-iotests/qcow2.py
+++ b/tests/qemu-iotests/qcow2.py
@@ -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):