1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _NETD_CONSTANTS_H 18 #define _NETD_CONSTANTS_H 19 20 #include <string> 21 #include <list> 22 #include <stdarg.h> 23 24 #include <chrono> 25 26 #include <private/android_filesystem_config.h> 27 28 #include "utils/RWLock.h" 29 30 const int PROTECT_MARK = 0x1; 31 const int MAX_SYSTEM_UID = AID_APP - 1; 32 33 extern const char * const IPTABLES_PATH; 34 extern const char * const IP6TABLES_PATH; 35 extern const char * const IP_PATH; 36 extern const char * const TC_PATH; 37 extern const char * const OEM_SCRIPT_PATH; 38 extern const char * const ADD; 39 extern const char * const DEL; 40 41 enum IptablesTarget { V4, V6, V4V6 }; 42 43 int execIptables(IptablesTarget target, ...); 44 int execIptablesSilently(IptablesTarget target, ...); 45 int execIptablesRestore(IptablesTarget target, const std::string& commands); 46 bool isIfaceName(const char *name); 47 int parsePrefix(const char *prefix, uint8_t *family, void *address, int size, uint8_t *prefixlen); 48 49 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a))) 50 51 #define __INT_STRLEN(i) sizeof(#i) 52 #define _INT_STRLEN(i) __INT_STRLEN(i) 53 #define INT32_STRLEN _INT_STRLEN(INT32_MIN) 54 #define UINT32_STRLEN _INT_STRLEN(UINT32_MAX) 55 #define UINT32_HEX_STRLEN sizeof("0x12345678") 56 57 #define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__)) 58 59 const uid_t INVALID_UID = static_cast<uid_t>(-1); 60 61 class Stopwatch { 62 public: Stopwatch()63 Stopwatch() : mStart(std::chrono::steady_clock::now()) {} ~Stopwatch()64 virtual ~Stopwatch() {}; 65 timeTaken()66 float timeTaken() const { 67 using ms = std::chrono::duration<float, std::ratio<1, 1000>>; 68 return (std::chrono::duration_cast<ms>( 69 std::chrono::steady_clock::now() - mStart)).count(); 70 } 71 72 private: 73 std::chrono::time_point<std::chrono::steady_clock> mStart; 74 }; 75 76 namespace android { 77 namespace net { 78 79 /** 80 * This lock exists to make NetdNativeService RPCs (which come in on multiple Binder threads) 81 * coexist with the commands in CommandListener.cpp. These are presumed not thread-safe because 82 * CommandListener has only one user (NetworkManagementService), which is connected through a 83 * FrameworkListener that passes in commands one at a time. 84 */ 85 extern android::RWLock gBigNetdLock; 86 87 } // namespace net 88 } // namespace android 89 90 #endif // _NETD_CONSTANTS_H 91