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xdrgen: XDR width for variable-length opaque

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The byte size of a variable-length opaque is conveyed in an unsigned
integer. If there is a specified maximum size, that is included in
the type's widths list.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2024-10-03 14:54:36 -04:00
parent 16c98ce04a
commit b0b85ef754
1 changed files with 15 additions and 0 deletions
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15
tools/net/sunrpc/xdrgen/xdr_ast.py
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@ -148,6 +148,21 @@ class _XdrVariableLengthOpaque(_XdrDeclaration):
maxsize: str
template: str = "variable_length_opaque"
def max_width(self) -> int:
"""Return width of type in XDR_UNITS"""
return 1 + xdr_quadlen(self.maxsize)
def symbolic_width(self) -> List:
"""Return list containing XDR width of type's components"""
widths = ["XDR_unsigned_int"]
if self.maxsize != "0":
widths.append("XDR_QUADLEN(" + self.maxsize + ")")
return widths
def __post_init__(self):
max_widths[self.name] = self.max_width()
symbolic_widths[self.name] = self.symbolic_width()
@dataclass
class _XdrString(_XdrDeclaration):