38cf698179
libnetdutils is referenced by netd.c and TrafficController.cpp, which are going to be mainlined. Therefore, move libnetdutils to a common place where both mainline module and platform code (Netd) can refer to. Bug: 202086915 Test: build; flash; cd system/netd; atest No-Typo-Check: Clean code move with no other changes. BYPASS_INCLUSIVE_LANGUAGE_REASON=Clean code move with no other changes. Merged-In: I645bfe35f6543149c9a9f894cd4158d27a481abe Change-Id: I645bfe35f6543149c9a9f894cd4158d27a481abe
79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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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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#include <ios>
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#include <linux/netlink.h>
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#include "netdutils/Math.h"
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#include "netdutils/Netlink.h"
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namespace android {
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namespace netdutils {
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void forEachNetlinkMessage(const Slice buf,
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const std::function<void(const nlmsghdr&, const Slice)>& onMsg) {
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Slice tail = buf;
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while (tail.size() >= sizeof(nlmsghdr)) {
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nlmsghdr hdr = {};
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extract(tail, hdr);
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const auto len = std::max<size_t>(hdr.nlmsg_len, sizeof(hdr));
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onMsg(hdr, drop(take(tail, len), sizeof(hdr)));
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tail = drop(tail, align(len, 2));
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}
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}
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void forEachNetlinkAttribute(const Slice buf,
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const std::function<void(const nlattr&, const Slice)>& onAttr) {
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Slice tail = buf;
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while (tail.size() >= sizeof(nlattr)) {
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nlattr hdr = {};
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extract(tail, hdr);
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const auto len = std::max<size_t>(hdr.nla_len, sizeof(hdr));
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onAttr(hdr, drop(take(tail, len), sizeof(hdr)));
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tail = drop(tail, align(len, 2));
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}
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}
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} // namespace netdutils
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} // namespace android
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bool operator==(const sockaddr_nl& lhs, const sockaddr_nl& rhs) {
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return (lhs.nl_family == rhs.nl_family) && (lhs.nl_pid == rhs.nl_pid) &&
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(lhs.nl_groups == rhs.nl_groups);
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}
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bool operator!=(const sockaddr_nl& lhs, const sockaddr_nl& rhs) {
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return !(lhs == rhs);
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}
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std::ostream& operator<<(std::ostream& os, const nlmsghdr& hdr) {
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return os << std::hex << "nlmsghdr["
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<< "len: 0x" << hdr.nlmsg_len << ", type: 0x" << hdr.nlmsg_type << ", flags: 0x"
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<< hdr.nlmsg_flags << ", seq: 0x" << hdr.nlmsg_seq << ", pid: 0x" << hdr.nlmsg_pid
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<< "]" << std::dec;
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}
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std::ostream& operator<<(std::ostream& os, const nlattr& attr) {
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return os << std::hex << "nlattr["
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<< "len: 0x" << attr.nla_len << ", type: 0x" << attr.nla_type << "]" << std::dec;
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}
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std::ostream& operator<<(std::ostream& os, const sockaddr_nl& addr) {
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return os << std::hex << "sockaddr_nl["
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<< "family: " << addr.nl_family << ", pid: " << addr.nl_pid
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<< ", groups: " << addr.nl_groups << "]" << std::dec;
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}
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