qcow2_format.py: dump bitmap flags in human readable way.
Introduce the class BitmapFlags that parses a bitmap flags mask. Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <1596742557-320265-5-git-send-email-andrey.shinkevich@virtuozzo.com> Signed-off-by: Eric Blake <eblake@redhat.com>
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@ -40,6 +40,22 @@ class Flags64(Qcow2Field):
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return str(bits)
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class BitmapFlags(Qcow2Field):
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flags = {
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0x1: 'in-use',
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0x2: 'auto'
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}
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def __str__(self):
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bits = []
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for bit in range(64):
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flag = self.value & (1 << bit)
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if flag:
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bits.append(self.flags.get(flag, f'bit-{bit}'))
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return f'{self.value:#x} ({bits})'
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class Enum(Qcow2Field):
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def __str__(self):
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