630 lines
24 KiB
C++
630 lines
24 KiB
C++
/*
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* Copyright (C) 2022 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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#define LOG_TAG "TrafficController"
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#include <inttypes.h>
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#include <linux/if_ether.h>
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#include <linux/in.h>
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#include <linux/inet_diag.h>
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#include <linux/netlink.h>
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#include <linux/sock_diag.h>
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#include <linux/unistd.h>
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#include <net/if.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/utsname.h>
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#include <sys/wait.h>
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#include <map>
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#include <mutex>
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#include <unordered_set>
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#include <vector>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include <android-base/unique_fd.h>
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#include <netdutils/StatusOr.h>
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#include <netdutils/Syscalls.h>
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#include <netdutils/UidConstants.h>
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#include <netdutils/Utils.h>
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#include <private/android_filesystem_config.h>
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#include "TrafficController.h"
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#include "bpf/BpfMap.h"
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#include "netdutils/DumpWriter.h"
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namespace android {
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namespace net {
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using base::StringPrintf;
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using base::unique_fd;
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using bpf::BpfMap;
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using bpf::synchronizeKernelRCU;
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using netdutils::DumpWriter;
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using netdutils::NetlinkListener;
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using netdutils::NetlinkListenerInterface;
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using netdutils::ScopedIndent;
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using netdutils::Slice;
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using netdutils::sSyscalls;
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using netdutils::Status;
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using netdutils::statusFromErrno;
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using netdutils::StatusOr;
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constexpr int kSockDiagMsgType = SOCK_DIAG_BY_FAMILY;
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constexpr int kSockDiagDoneMsgType = NLMSG_DONE;
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const char* TrafficController::LOCAL_DOZABLE = "fw_dozable";
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const char* TrafficController::LOCAL_STANDBY = "fw_standby";
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const char* TrafficController::LOCAL_POWERSAVE = "fw_powersave";
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const char* TrafficController::LOCAL_RESTRICTED = "fw_restricted";
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const char* TrafficController::LOCAL_LOW_POWER_STANDBY = "fw_low_power_standby";
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const char* TrafficController::LOCAL_OEM_DENY_1 = "fw_oem_deny_1";
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const char* TrafficController::LOCAL_OEM_DENY_2 = "fw_oem_deny_2";
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const char* TrafficController::LOCAL_OEM_DENY_3 = "fw_oem_deny_3";
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static_assert(BPF_PERMISSION_INTERNET == INetd::PERMISSION_INTERNET,
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"Mismatch between BPF and AIDL permissions: PERMISSION_INTERNET");
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static_assert(BPF_PERMISSION_UPDATE_DEVICE_STATS == INetd::PERMISSION_UPDATE_DEVICE_STATS,
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"Mismatch between BPF and AIDL permissions: PERMISSION_UPDATE_DEVICE_STATS");
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#define FLAG_MSG_TRANS(result, flag, value) \
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do { \
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if ((value) & (flag)) { \
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(result).append(" " #flag); \
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(value) &= ~(flag); \
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} \
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} while (0)
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const std::string uidMatchTypeToString(uint32_t match) {
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std::string matchType;
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FLAG_MSG_TRANS(matchType, HAPPY_BOX_MATCH, match);
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FLAG_MSG_TRANS(matchType, PENALTY_BOX_MATCH, match);
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FLAG_MSG_TRANS(matchType, DOZABLE_MATCH, match);
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FLAG_MSG_TRANS(matchType, STANDBY_MATCH, match);
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FLAG_MSG_TRANS(matchType, POWERSAVE_MATCH, match);
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FLAG_MSG_TRANS(matchType, RESTRICTED_MATCH, match);
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FLAG_MSG_TRANS(matchType, LOW_POWER_STANDBY_MATCH, match);
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FLAG_MSG_TRANS(matchType, IIF_MATCH, match);
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FLAG_MSG_TRANS(matchType, LOCKDOWN_VPN_MATCH, match);
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FLAG_MSG_TRANS(matchType, OEM_DENY_1_MATCH, match);
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FLAG_MSG_TRANS(matchType, OEM_DENY_2_MATCH, match);
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FLAG_MSG_TRANS(matchType, OEM_DENY_3_MATCH, match);
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if (match) {
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return StringPrintf("Unknown match: %u", match);
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}
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return matchType;
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}
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const std::string UidPermissionTypeToString(int permission) {
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if (permission == INetd::PERMISSION_NONE) {
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return "PERMISSION_NONE";
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}
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if (permission == INetd::PERMISSION_UNINSTALLED) {
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// This should never appear in the map, complain loudly if it does.
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return "PERMISSION_UNINSTALLED error!";
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}
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std::string permissionType;
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FLAG_MSG_TRANS(permissionType, BPF_PERMISSION_INTERNET, permission);
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FLAG_MSG_TRANS(permissionType, BPF_PERMISSION_UPDATE_DEVICE_STATS, permission);
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if (permission) {
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return StringPrintf("Unknown permission: %u", permission);
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}
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return permissionType;
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}
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StatusOr<std::unique_ptr<NetlinkListenerInterface>> TrafficController::makeSkDestroyListener() {
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const auto& sys = sSyscalls.get();
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ASSIGN_OR_RETURN(auto event, sys.eventfd(0, EFD_CLOEXEC));
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const int domain = AF_NETLINK;
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const int type = SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK;
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const int protocol = NETLINK_INET_DIAG;
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ASSIGN_OR_RETURN(auto sock, sys.socket(domain, type, protocol));
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// TODO: if too many sockets are closed too quickly, we can overflow the socket buffer, and
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// some entries in mCookieTagMap will not be freed. In order to fix this we would need to
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// periodically dump all sockets and remove the tag entries for sockets that have been closed.
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// For now, set a large-enough buffer that we can close hundreds of sockets without getting
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// ENOBUFS and leaking mCookieTagMap entries.
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int rcvbuf = 512 * 1024;
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auto ret = sys.setsockopt(sock, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf));
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if (!ret.ok()) {
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ALOGW("Failed to set SkDestroyListener buffer size to %d: %s", rcvbuf, ret.msg().c_str());
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}
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sockaddr_nl addr = {
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.nl_family = AF_NETLINK,
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.nl_groups = 1 << (SKNLGRP_INET_TCP_DESTROY - 1) | 1 << (SKNLGRP_INET_UDP_DESTROY - 1) |
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1 << (SKNLGRP_INET6_TCP_DESTROY - 1) | 1 << (SKNLGRP_INET6_UDP_DESTROY - 1)};
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RETURN_IF_NOT_OK(sys.bind(sock, addr));
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const sockaddr_nl kernel = {.nl_family = AF_NETLINK};
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RETURN_IF_NOT_OK(sys.connect(sock, kernel));
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std::unique_ptr<NetlinkListenerInterface> listener =
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std::make_unique<NetlinkListener>(std::move(event), std::move(sock), "SkDestroyListen");
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return listener;
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}
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Status TrafficController::initMaps() {
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std::lock_guard guard(mMutex);
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RETURN_IF_NOT_OK(mCookieTagMap.init(COOKIE_TAG_MAP_PATH));
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RETURN_IF_NOT_OK(mUidCounterSetMap.init(UID_COUNTERSET_MAP_PATH));
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RETURN_IF_NOT_OK(mAppUidStatsMap.init(APP_UID_STATS_MAP_PATH));
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RETURN_IF_NOT_OK(mStatsMapA.init(STATS_MAP_A_PATH));
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RETURN_IF_NOT_OK(mStatsMapB.init(STATS_MAP_B_PATH));
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RETURN_IF_NOT_OK(mIfaceIndexNameMap.init(IFACE_INDEX_NAME_MAP_PATH));
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RETURN_IF_NOT_OK(mIfaceStatsMap.init(IFACE_STATS_MAP_PATH));
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RETURN_IF_NOT_OK(mConfigurationMap.init(CONFIGURATION_MAP_PATH));
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RETURN_IF_NOT_OK(mUidOwnerMap.init(UID_OWNER_MAP_PATH));
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RETURN_IF_NOT_OK(mUidPermissionMap.init(UID_PERMISSION_MAP_PATH));
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ALOGI("%s successfully", __func__);
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return netdutils::status::ok;
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}
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Status TrafficController::start(bool startSkDestroyListener) {
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RETURN_IF_NOT_OK(initMaps());
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if (!startSkDestroyListener) {
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return netdutils::status::ok;
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}
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auto result = makeSkDestroyListener();
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if (!isOk(result)) {
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ALOGE("Unable to create SkDestroyListener: %s", toString(result).c_str());
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} else {
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mSkDestroyListener = std::move(result.value());
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}
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// Rx handler extracts nfgenmsg looks up and invokes registered dispatch function.
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const auto rxHandler = [this](const nlmsghdr&, const Slice msg) {
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std::lock_guard guard(mMutex);
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inet_diag_msg diagmsg = {};
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if (extract(msg, diagmsg) < sizeof(inet_diag_msg)) {
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ALOGE("Unrecognized netlink message: %s", toString(msg).c_str());
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return;
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}
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uint64_t sock_cookie = static_cast<uint64_t>(diagmsg.id.idiag_cookie[0]) |
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(static_cast<uint64_t>(diagmsg.id.idiag_cookie[1]) << 32);
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Status s = mCookieTagMap.deleteValue(sock_cookie);
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if (!isOk(s) && s.code() != ENOENT) {
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ALOGE("Failed to delete cookie %" PRIx64 ": %s", sock_cookie, toString(s).c_str());
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return;
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}
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};
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expectOk(mSkDestroyListener->subscribe(kSockDiagMsgType, rxHandler));
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// In case multiple netlink message comes in as a stream, we need to handle the rxDone message
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// properly.
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const auto rxDoneHandler = [](const nlmsghdr&, const Slice msg) {
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// Ignore NLMSG_DONE messages
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inet_diag_msg diagmsg = {};
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extract(msg, diagmsg);
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};
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expectOk(mSkDestroyListener->subscribe(kSockDiagDoneMsgType, rxDoneHandler));
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return netdutils::status::ok;
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}
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Status TrafficController::updateOwnerMapEntry(UidOwnerMatchType match, uid_t uid, FirewallRule rule,
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FirewallType type) {
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std::lock_guard guard(mMutex);
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if ((rule == ALLOW && type == ALLOWLIST) || (rule == DENY && type == DENYLIST)) {
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RETURN_IF_NOT_OK(addRule(uid, match));
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} else if ((rule == ALLOW && type == DENYLIST) || (rule == DENY && type == ALLOWLIST)) {
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RETURN_IF_NOT_OK(removeRule(uid, match));
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} else {
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//Cannot happen.
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return statusFromErrno(EINVAL, "");
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}
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return netdutils::status::ok;
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}
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Status TrafficController::removeRule(uint32_t uid, UidOwnerMatchType match) {
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auto oldMatch = mUidOwnerMap.readValue(uid);
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if (oldMatch.ok()) {
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UidOwnerValue newMatch = {
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.iif = (match == IIF_MATCH) ? 0 : oldMatch.value().iif,
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.rule = oldMatch.value().rule & ~match,
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};
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if (newMatch.rule == 0) {
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RETURN_IF_NOT_OK(mUidOwnerMap.deleteValue(uid));
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} else {
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RETURN_IF_NOT_OK(mUidOwnerMap.writeValue(uid, newMatch, BPF_ANY));
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}
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} else {
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return statusFromErrno(ENOENT, StringPrintf("uid: %u does not exist in map", uid));
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}
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return netdutils::status::ok;
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}
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Status TrafficController::addRule(uint32_t uid, UidOwnerMatchType match, uint32_t iif) {
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if (match != IIF_MATCH && iif != 0) {
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return statusFromErrno(EINVAL, "Non-interface match must have zero interface index");
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}
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auto oldMatch = mUidOwnerMap.readValue(uid);
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if (oldMatch.ok()) {
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UidOwnerValue newMatch = {
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.iif = (match == IIF_MATCH) ? iif : oldMatch.value().iif,
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.rule = oldMatch.value().rule | match,
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};
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RETURN_IF_NOT_OK(mUidOwnerMap.writeValue(uid, newMatch, BPF_ANY));
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} else {
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UidOwnerValue newMatch = {
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.iif = iif,
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.rule = match,
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};
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RETURN_IF_NOT_OK(mUidOwnerMap.writeValue(uid, newMatch, BPF_ANY));
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}
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return netdutils::status::ok;
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}
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Status TrafficController::updateUidOwnerMap(const uint32_t uid,
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UidOwnerMatchType matchType, IptOp op) {
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std::lock_guard guard(mMutex);
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if (op == IptOpDelete) {
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RETURN_IF_NOT_OK(removeRule(uid, matchType));
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} else if (op == IptOpInsert) {
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RETURN_IF_NOT_OK(addRule(uid, matchType));
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} else {
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// Cannot happen.
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return statusFromErrno(EINVAL, StringPrintf("invalid IptOp: %d, %d", op, matchType));
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}
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return netdutils::status::ok;
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}
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FirewallType TrafficController::getFirewallType(ChildChain chain) {
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switch (chain) {
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case DOZABLE:
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return ALLOWLIST;
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case STANDBY:
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return DENYLIST;
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case POWERSAVE:
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return ALLOWLIST;
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case RESTRICTED:
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return ALLOWLIST;
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case LOW_POWER_STANDBY:
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return ALLOWLIST;
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case OEM_DENY_1:
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return DENYLIST;
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case OEM_DENY_2:
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return DENYLIST;
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case OEM_DENY_3:
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return DENYLIST;
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case NONE:
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default:
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return DENYLIST;
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}
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}
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int TrafficController::changeUidOwnerRule(ChildChain chain, uid_t uid, FirewallRule rule,
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FirewallType type) {
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Status res;
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switch (chain) {
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case DOZABLE:
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res = updateOwnerMapEntry(DOZABLE_MATCH, uid, rule, type);
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break;
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case STANDBY:
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res = updateOwnerMapEntry(STANDBY_MATCH, uid, rule, type);
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break;
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case POWERSAVE:
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res = updateOwnerMapEntry(POWERSAVE_MATCH, uid, rule, type);
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break;
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case RESTRICTED:
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res = updateOwnerMapEntry(RESTRICTED_MATCH, uid, rule, type);
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break;
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case LOW_POWER_STANDBY:
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res = updateOwnerMapEntry(LOW_POWER_STANDBY_MATCH, uid, rule, type);
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break;
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case OEM_DENY_1:
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res = updateOwnerMapEntry(OEM_DENY_1_MATCH, uid, rule, type);
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break;
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case OEM_DENY_2:
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res = updateOwnerMapEntry(OEM_DENY_2_MATCH, uid, rule, type);
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break;
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case OEM_DENY_3:
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res = updateOwnerMapEntry(OEM_DENY_3_MATCH, uid, rule, type);
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break;
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case NONE:
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default:
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ALOGW("Unknown child chain: %d", chain);
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return -EINVAL;
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}
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if (!isOk(res)) {
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ALOGE("change uid(%u) rule of %d failed: %s, rule: %d, type: %d", uid, chain,
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res.msg().c_str(), rule, type);
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return -res.code();
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}
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return 0;
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}
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Status TrafficController::replaceRulesInMap(const UidOwnerMatchType match,
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const std::vector<int32_t>& uids) {
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std::lock_guard guard(mMutex);
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std::set<int32_t> uidSet(uids.begin(), uids.end());
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std::vector<uint32_t> uidsToDelete;
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auto getUidsToDelete = [&uidsToDelete, &uidSet](const uint32_t& key,
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const BpfMap<uint32_t, UidOwnerValue>&) {
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if (uidSet.find((int32_t) key) == uidSet.end()) {
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uidsToDelete.push_back(key);
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}
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return base::Result<void>();
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};
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RETURN_IF_NOT_OK(mUidOwnerMap.iterate(getUidsToDelete));
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for(auto uid : uidsToDelete) {
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RETURN_IF_NOT_OK(removeRule(uid, match));
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}
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for (auto uid : uids) {
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RETURN_IF_NOT_OK(addRule(uid, match));
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}
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return netdutils::status::ok;
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}
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Status TrafficController::addUidInterfaceRules(const int iif,
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const std::vector<int32_t>& uidsToAdd) {
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std::lock_guard guard(mMutex);
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for (auto uid : uidsToAdd) {
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netdutils::Status result = addRule(uid, IIF_MATCH, iif);
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if (!isOk(result)) {
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ALOGW("addRule failed(%d): uid=%d iif=%d", result.code(), uid, iif);
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}
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}
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return netdutils::status::ok;
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}
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Status TrafficController::removeUidInterfaceRules(const std::vector<int32_t>& uidsToDelete) {
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std::lock_guard guard(mMutex);
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for (auto uid : uidsToDelete) {
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netdutils::Status result = removeRule(uid, IIF_MATCH);
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if (!isOk(result)) {
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ALOGW("removeRule failed(%d): uid=%d", result.code(), uid);
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}
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}
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return netdutils::status::ok;
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}
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Status TrafficController::updateUidLockdownRule(const uid_t uid, const bool add) {
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std::lock_guard guard(mMutex);
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netdutils::Status result = add ? addRule(uid, LOCKDOWN_VPN_MATCH)
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: removeRule(uid, LOCKDOWN_VPN_MATCH);
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if (!isOk(result)) {
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ALOGW("%s Lockdown rule failed(%d): uid=%d",
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(add ? "add": "remove"), result.code(), uid);
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}
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return result;
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}
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int TrafficController::replaceUidOwnerMap(const std::string& name, bool isAllowlist __unused,
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const std::vector<int32_t>& uids) {
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// FirewallRule rule = isAllowlist ? ALLOW : DENY;
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// FirewallType type = isAllowlist ? ALLOWLIST : DENYLIST;
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Status res;
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if (!name.compare(LOCAL_DOZABLE)) {
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res = replaceRulesInMap(DOZABLE_MATCH, uids);
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} else if (!name.compare(LOCAL_STANDBY)) {
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res = replaceRulesInMap(STANDBY_MATCH, uids);
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} else if (!name.compare(LOCAL_POWERSAVE)) {
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res = replaceRulesInMap(POWERSAVE_MATCH, uids);
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} else if (!name.compare(LOCAL_RESTRICTED)) {
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res = replaceRulesInMap(RESTRICTED_MATCH, uids);
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} else if (!name.compare(LOCAL_LOW_POWER_STANDBY)) {
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res = replaceRulesInMap(LOW_POWER_STANDBY_MATCH, uids);
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} else if (!name.compare(LOCAL_OEM_DENY_1)) {
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res = replaceRulesInMap(OEM_DENY_1_MATCH, uids);
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} else if (!name.compare(LOCAL_OEM_DENY_2)) {
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res = replaceRulesInMap(OEM_DENY_2_MATCH, uids);
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} else if (!name.compare(LOCAL_OEM_DENY_3)) {
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res = replaceRulesInMap(OEM_DENY_3_MATCH, uids);
|
|
} else {
|
|
ALOGE("unknown chain name: %s", name.c_str());
|
|
return -EINVAL;
|
|
}
|
|
if (!isOk(res)) {
|
|
ALOGE("Failed to clean up chain: %s: %s", name.c_str(), res.msg().c_str());
|
|
return -res.code();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int TrafficController::toggleUidOwnerMap(ChildChain chain, bool enable) {
|
|
std::lock_guard guard(mMutex);
|
|
uint32_t key = UID_RULES_CONFIGURATION_KEY;
|
|
auto oldConfigure = mConfigurationMap.readValue(key);
|
|
if (!oldConfigure.ok()) {
|
|
ALOGE("Cannot read the old configuration from map: %s",
|
|
oldConfigure.error().message().c_str());
|
|
return -oldConfigure.error().code();
|
|
}
|
|
uint32_t match;
|
|
switch (chain) {
|
|
case DOZABLE:
|
|
match = DOZABLE_MATCH;
|
|
break;
|
|
case STANDBY:
|
|
match = STANDBY_MATCH;
|
|
break;
|
|
case POWERSAVE:
|
|
match = POWERSAVE_MATCH;
|
|
break;
|
|
case RESTRICTED:
|
|
match = RESTRICTED_MATCH;
|
|
break;
|
|
case LOW_POWER_STANDBY:
|
|
match = LOW_POWER_STANDBY_MATCH;
|
|
break;
|
|
case OEM_DENY_1:
|
|
match = OEM_DENY_1_MATCH;
|
|
break;
|
|
case OEM_DENY_2:
|
|
match = OEM_DENY_2_MATCH;
|
|
break;
|
|
case OEM_DENY_3:
|
|
match = OEM_DENY_3_MATCH;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
BpfConfig newConfiguration =
|
|
enable ? (oldConfigure.value() | match) : (oldConfigure.value() & ~match);
|
|
Status res = mConfigurationMap.writeValue(key, newConfiguration, BPF_EXIST);
|
|
if (!isOk(res)) {
|
|
ALOGE("Failed to toggleUidOwnerMap(%d): %s", chain, res.msg().c_str());
|
|
}
|
|
return -res.code();
|
|
}
|
|
|
|
Status TrafficController::swapActiveStatsMap() {
|
|
std::lock_guard guard(mMutex);
|
|
|
|
uint32_t key = CURRENT_STATS_MAP_CONFIGURATION_KEY;
|
|
auto oldConfigure = mConfigurationMap.readValue(key);
|
|
if (!oldConfigure.ok()) {
|
|
ALOGE("Cannot read the old configuration from map: %s",
|
|
oldConfigure.error().message().c_str());
|
|
return Status(oldConfigure.error().code(), oldConfigure.error().message());
|
|
}
|
|
|
|
// Write to the configuration map to inform the kernel eBPF program to switch
|
|
// from using one map to the other. Use flag BPF_EXIST here since the map should
|
|
// be already populated in initMaps.
|
|
uint32_t newConfigure = (oldConfigure.value() == SELECT_MAP_A) ? SELECT_MAP_B : SELECT_MAP_A;
|
|
auto res = mConfigurationMap.writeValue(CURRENT_STATS_MAP_CONFIGURATION_KEY, newConfigure,
|
|
BPF_EXIST);
|
|
if (!res.ok()) {
|
|
ALOGE("Failed to toggle the stats map: %s", strerror(res.error().code()));
|
|
return res;
|
|
}
|
|
// After changing the config, we need to make sure all the current running
|
|
// eBPF programs are finished and all the CPUs are aware of this config change
|
|
// before we modify the old map. So we do a special hack here to wait for
|
|
// the kernel to do a synchronize_rcu(). Once the kernel called
|
|
// synchronize_rcu(), the config we just updated will be available to all cores
|
|
// and the next eBPF programs triggered inside the kernel will use the new
|
|
// map configuration. So once this function returns we can safely modify the
|
|
// old stats map without concerning about race between the kernel and
|
|
// userspace.
|
|
int ret = synchronizeKernelRCU();
|
|
if (ret) {
|
|
ALOGE("map swap synchronize_rcu() ended with failure: %s", strerror(-ret));
|
|
return statusFromErrno(-ret, "map swap synchronize_rcu() failed");
|
|
}
|
|
return netdutils::status::ok;
|
|
}
|
|
|
|
void TrafficController::setPermissionForUids(int permission, const std::vector<uid_t>& uids) {
|
|
std::lock_guard guard(mMutex);
|
|
if (permission == INetd::PERMISSION_UNINSTALLED) {
|
|
for (uid_t uid : uids) {
|
|
// Clean up all permission information for the related uid if all the
|
|
// packages related to it are uninstalled.
|
|
mPrivilegedUser.erase(uid);
|
|
Status ret = mUidPermissionMap.deleteValue(uid);
|
|
if (!isOk(ret) && ret.code() != ENOENT) {
|
|
ALOGE("Failed to clean up the permission for %u: %s", uid, strerror(ret.code()));
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
bool privileged = (permission & INetd::PERMISSION_UPDATE_DEVICE_STATS);
|
|
|
|
for (uid_t uid : uids) {
|
|
if (privileged) {
|
|
mPrivilegedUser.insert(uid);
|
|
} else {
|
|
mPrivilegedUser.erase(uid);
|
|
}
|
|
|
|
// The map stores all the permissions that the UID has, except if the only permission
|
|
// the UID has is the INTERNET permission, then the UID should not appear in the map.
|
|
if (permission != INetd::PERMISSION_INTERNET) {
|
|
Status ret = mUidPermissionMap.writeValue(uid, permission, BPF_ANY);
|
|
if (!isOk(ret)) {
|
|
ALOGE("Failed to set permission: %s of uid(%u) to permission map: %s",
|
|
UidPermissionTypeToString(permission).c_str(), uid, strerror(ret.code()));
|
|
}
|
|
} else {
|
|
Status ret = mUidPermissionMap.deleteValue(uid);
|
|
if (!isOk(ret) && ret.code() != ENOENT) {
|
|
ALOGE("Failed to remove uid %u from permission map: %s", uid, strerror(ret.code()));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
std::string getMapStatus(const base::unique_fd& map_fd, const char* path) {
|
|
if (map_fd.get() < 0) {
|
|
return StringPrintf("map fd lost");
|
|
}
|
|
if (access(path, F_OK) != 0) {
|
|
return StringPrintf("map not pinned to location: %s", path);
|
|
}
|
|
return StringPrintf("OK");
|
|
}
|
|
|
|
// NOLINTNEXTLINE(google-runtime-references): grandfathered pass by non-const reference
|
|
void dumpBpfMap(const std::string& mapName, DumpWriter& dw, const std::string& header) {
|
|
dw.blankline();
|
|
dw.println("%s:", mapName.c_str());
|
|
if (!header.empty()) {
|
|
dw.println(header);
|
|
}
|
|
}
|
|
|
|
void TrafficController::dump(int fd, bool verbose __unused) {
|
|
std::lock_guard guard(mMutex);
|
|
DumpWriter dw(fd);
|
|
|
|
ScopedIndent indentTop(dw);
|
|
dw.println("TrafficController");
|
|
|
|
ScopedIndent indentPreBpfModule(dw);
|
|
|
|
dw.blankline();
|
|
dw.println("mCookieTagMap status: %s",
|
|
getMapStatus(mCookieTagMap.getMap(), COOKIE_TAG_MAP_PATH).c_str());
|
|
dw.println("mUidCounterSetMap status: %s",
|
|
getMapStatus(mUidCounterSetMap.getMap(), UID_COUNTERSET_MAP_PATH).c_str());
|
|
dw.println("mAppUidStatsMap status: %s",
|
|
getMapStatus(mAppUidStatsMap.getMap(), APP_UID_STATS_MAP_PATH).c_str());
|
|
dw.println("mStatsMapA status: %s",
|
|
getMapStatus(mStatsMapA.getMap(), STATS_MAP_A_PATH).c_str());
|
|
dw.println("mStatsMapB status: %s",
|
|
getMapStatus(mStatsMapB.getMap(), STATS_MAP_B_PATH).c_str());
|
|
dw.println("mIfaceIndexNameMap status: %s",
|
|
getMapStatus(mIfaceIndexNameMap.getMap(), IFACE_INDEX_NAME_MAP_PATH).c_str());
|
|
dw.println("mIfaceStatsMap status: %s",
|
|
getMapStatus(mIfaceStatsMap.getMap(), IFACE_STATS_MAP_PATH).c_str());
|
|
dw.println("mConfigurationMap status: %s",
|
|
getMapStatus(mConfigurationMap.getMap(), CONFIGURATION_MAP_PATH).c_str());
|
|
dw.println("mUidOwnerMap status: %s",
|
|
getMapStatus(mUidOwnerMap.getMap(), UID_OWNER_MAP_PATH).c_str());
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace android
|