58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <sys/types.h>
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#include <string>
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#include <folly/portability/Sockets.h>
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namespace folly {
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namespace detail {
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std::string familyNameStrDefault(sa_family_t family);
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inline std::string familyNameStr(sa_family_t family) {
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switch (family) {
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case AF_INET:
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return "AF_INET";
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case AF_INET6:
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return "AF_INET6";
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case AF_UNSPEC:
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return "AF_UNSPEC";
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case AF_UNIX:
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return "AF_UNIX";
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default:
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return familyNameStrDefault(family);
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}
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}
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[[noreturn]] void getNthMSBitImplThrow(size_t bitCount, sa_family_t family);
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template <typename IPAddrType>
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inline bool
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getNthMSBitImpl(const IPAddrType& ip, size_t bitIndex, sa_family_t family) {
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if (bitIndex >= ip.bitCount()) {
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getNthMSBitImplThrow(ip.bitCount(), family);
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}
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// Underlying bytes are in n/w byte order
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return (ip.getNthMSByte(bitIndex / 8) & (0x80 >> (bitIndex % 8))) != 0;
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}
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} // namespace detail
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} // namespace folly
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