Commit 1b2eff62 authored by Stefan Hajnoczi's avatar Stefan Hajnoczi Committed by Kevin Wolf
Browse files

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: default avatarStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 8b9ef60d

tests/qemu-iotests/qcow2.py

+23 −0
Original line number Diff line number Diff line
@@ -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):