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80 lines
1.6 KiB
Python
80 lines
1.6 KiB
Python
#!/usr/local/bin/python3
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from enum import Enum
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from typing import Any
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from typing import Dict
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from typing import List
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from typing import NamedTuple
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class NlConst:
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AF_NETLINK = 38
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NETLINK_ROUTE = 0
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NETLINK_GENERIC = 16
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GENL_ID_CTRL = 16
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def roundup2(val: int, num: int) -> int:
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if val % num:
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return (val | (num - 1)) + 1
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else:
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return val
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def align4(val: int) -> int:
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return roundup2(val, 4)
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def enum_or_int(val) -> int:
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if isinstance(val, Enum):
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return val.value
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return val
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class AttrDescr(NamedTuple):
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val: Enum
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cls: "NlAttr"
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child_map: Any = None
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is_array: bool = False
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def prepare_attrs_map(attrs: List[AttrDescr]) -> Dict[str, Dict]:
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ret = {}
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for ad in attrs:
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ret[ad.val.value] = {"ad": ad}
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if ad.child_map:
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ret[ad.val.value]["child"] = prepare_attrs_map(ad.child_map)
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ret[ad.val.value]["is_array"] = ad.is_array
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return ret
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def build_propmap(cls):
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ret = {}
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for prop in dir(cls):
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if not prop.startswith("_"):
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ret[getattr(cls, prop).value] = prop
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return ret
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def get_bitmask_map(propmap, val):
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v = 1
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ret = {}
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while val:
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if v & val:
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if v in propmap:
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ret[v] = propmap[v]
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else:
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ret[v] = hex(v)
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val -= v
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v *= 2
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return ret
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def get_bitmask_str(cls, val):
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if isinstance(cls, type):
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pmap = build_propmap(cls)
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else:
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pmap = {}
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for _cls in cls:
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pmap.update(build_propmap(_cls))
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bmap = get_bitmask_map(pmap, val)
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return ",".join([v for k, v in bmap.items()])
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