The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005 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 | |
Jason Parks | dcd3958 | 2009-11-03 12:14:38 -0800 | [diff] [blame] | 17 | #define LOG_TAG "IPCThreadState" |
| 18 | |
Mathias Agopian | c5b2c0b | 2009-05-19 19:08:10 -0700 | [diff] [blame] | 19 | #include <binder/IPCThreadState.h> |
Jayant Chowdhary | dac6dc8 | 2018-10-01 22:52:44 +0000 | [diff] [blame] | 20 | #include <binderthreadstate/IPCThreadStateBase.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | |
Mathias Agopian | c5b2c0b | 2009-05-19 19:08:10 -0700 | [diff] [blame] | 22 | #include <binder/Binder.h> |
| 23 | #include <binder/BpBinder.h> |
Mathias Agopian | 002e1e5 | 2013-05-06 20:20:50 -0700 | [diff] [blame] | 24 | #include <binder/TextOutput.h> |
| 25 | |
Steven Moreland | 7732a09 | 2019-01-02 17:54:16 -0800 | [diff] [blame] | 26 | #include <android-base/macros.h> |
Glenn Kasten | a26e1cf | 2012-03-16 07:15:23 -0700 | [diff] [blame] | 27 | #include <cutils/sched_policy.h> |
Steven Moreland | 7732a09 | 2019-01-02 17:54:16 -0800 | [diff] [blame] | 28 | #include <utils/CallStack.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 29 | #include <utils/Log.h> |
Colin Cross | 96e8322 | 2016-04-15 14:29:55 -0700 | [diff] [blame] | 30 | #include <utils/SystemClock.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 31 | #include <utils/threads.h> |
| 32 | |
Mathias Agopian | 208059f | 2009-05-18 15:08:03 -0700 | [diff] [blame] | 33 | #include <private/binder/binder_module.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 34 | |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 35 | #include <atomic> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 36 | #include <errno.h> |
Colin Cross | 96e8322 | 2016-04-15 14:29:55 -0700 | [diff] [blame] | 37 | #include <inttypes.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 38 | #include <pthread.h> |
| 39 | #include <sched.h> |
Yabin Cui | 8fb2d25 | 2015-01-26 19:45:47 -0800 | [diff] [blame] | 40 | #include <signal.h> |
| 41 | #include <stdio.h> |
| 42 | #include <sys/ioctl.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 43 | #include <sys/resource.h> |
Yabin Cui | 8fb2d25 | 2015-01-26 19:45:47 -0800 | [diff] [blame] | 44 | #include <unistd.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 45 | |
Steven Moreland | a4853cd | 2019-07-12 15:44:37 -0700 | [diff] [blame] | 46 | #include "Static.h" |
| 47 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 48 | #if LOG_NDEBUG |
| 49 | |
| 50 | #define IF_LOG_TRANSACTIONS() if (false) |
| 51 | #define IF_LOG_COMMANDS() if (false) |
| 52 | #define LOG_REMOTEREFS(...) |
| 53 | #define IF_LOG_REMOTEREFS() if (false) |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 54 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 55 | #define LOG_THREADPOOL(...) |
| 56 | #define LOG_ONEWAY(...) |
| 57 | |
| 58 | #else |
| 59 | |
Steve Block | 9f76015 | 2011-10-12 17:27:03 +0100 | [diff] [blame] | 60 | #define IF_LOG_TRANSACTIONS() IF_ALOG(LOG_VERBOSE, "transact") |
| 61 | #define IF_LOG_COMMANDS() IF_ALOG(LOG_VERBOSE, "ipc") |
| 62 | #define LOG_REMOTEREFS(...) ALOG(LOG_DEBUG, "remoterefs", __VA_ARGS__) |
| 63 | #define IF_LOG_REMOTEREFS() IF_ALOG(LOG_DEBUG, "remoterefs") |
| 64 | #define LOG_THREADPOOL(...) ALOG(LOG_DEBUG, "threadpool", __VA_ARGS__) |
| 65 | #define LOG_ONEWAY(...) ALOG(LOG_DEBUG, "ipc", __VA_ARGS__) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 66 | |
| 67 | #endif |
| 68 | |
| 69 | // --------------------------------------------------------------------------- |
| 70 | |
| 71 | namespace android { |
| 72 | |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 73 | // Static const and functions will be optimized out if not used, |
| 74 | // when LOG_NDEBUG and references in IF_LOG_COMMANDS() are optimized out. |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 75 | static const char *kReturnStrings[] = { |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 76 | "BR_ERROR", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 77 | "BR_OK", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 78 | "BR_TRANSACTION", |
| 79 | "BR_REPLY", |
| 80 | "BR_ACQUIRE_RESULT", |
| 81 | "BR_DEAD_REPLY", |
| 82 | "BR_TRANSACTION_COMPLETE", |
| 83 | "BR_INCREFS", |
| 84 | "BR_ACQUIRE", |
| 85 | "BR_RELEASE", |
| 86 | "BR_DECREFS", |
| 87 | "BR_ATTEMPT_ACQUIRE", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 88 | "BR_NOOP", |
| 89 | "BR_SPAWN_LOOPER", |
| 90 | "BR_FINISHED", |
| 91 | "BR_DEAD_BINDER", |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 92 | "BR_CLEAR_DEATH_NOTIFICATION_DONE", |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 93 | "BR_FAILED_REPLY", |
| 94 | "BR_TRANSACTION_SEC_CTX", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 95 | }; |
| 96 | |
| 97 | static const char *kCommandStrings[] = { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 98 | "BC_TRANSACTION", |
| 99 | "BC_REPLY", |
| 100 | "BC_ACQUIRE_RESULT", |
| 101 | "BC_FREE_BUFFER", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 102 | "BC_INCREFS", |
| 103 | "BC_ACQUIRE", |
| 104 | "BC_RELEASE", |
| 105 | "BC_DECREFS", |
| 106 | "BC_INCREFS_DONE", |
| 107 | "BC_ACQUIRE_DONE", |
| 108 | "BC_ATTEMPT_ACQUIRE", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 109 | "BC_REGISTER_LOOPER", |
| 110 | "BC_ENTER_LOOPER", |
| 111 | "BC_EXIT_LOOPER", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 112 | "BC_REQUEST_DEATH_NOTIFICATION", |
| 113 | "BC_CLEAR_DEATH_NOTIFICATION", |
| 114 | "BC_DEAD_BINDER_DONE" |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 115 | }; |
| 116 | |
songjinshi | 73a7dde | 2016-10-18 21:05:56 +0800 | [diff] [blame] | 117 | static const char* getReturnString(uint32_t cmd) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 118 | { |
songjinshi | 8e486c6 | 2019-04-04 11:22:52 +0800 | [diff] [blame] | 119 | size_t idx = cmd & _IOC_NRMASK; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 120 | if (idx < sizeof(kReturnStrings) / sizeof(kReturnStrings[0])) |
| 121 | return kReturnStrings[idx]; |
| 122 | else |
| 123 | return "unknown"; |
| 124 | } |
| 125 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 126 | static const void* printBinderTransactionData(TextOutput& out, const void* data) |
| 127 | { |
| 128 | const binder_transaction_data* btd = |
| 129 | (const binder_transaction_data*)data; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 130 | if (btd->target.handle < 1024) { |
| 131 | /* want to print descriptors in decimal; guess based on value */ |
| 132 | out << "target.desc=" << btd->target.handle; |
| 133 | } else { |
| 134 | out << "target.ptr=" << btd->target.ptr; |
| 135 | } |
| 136 | out << " (cookie " << btd->cookie << ")" << endl |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 137 | << "code=" << TypeCode(btd->code) << ", flags=" << (void*)(long)btd->flags << endl |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 138 | << "data=" << btd->data.ptr.buffer << " (" << (void*)btd->data_size |
| 139 | << " bytes)" << endl |
| 140 | << "offsets=" << btd->data.ptr.offsets << " (" << (void*)btd->offsets_size |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 141 | << " bytes)"; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 142 | return btd+1; |
| 143 | } |
| 144 | |
| 145 | static const void* printReturnCommand(TextOutput& out, const void* _cmd) |
| 146 | { |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 147 | static const size_t N = sizeof(kReturnStrings)/sizeof(kReturnStrings[0]); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 148 | const int32_t* cmd = (const int32_t*)_cmd; |
Bernhard RosenkrƤnzer | 74debb0 | 2014-11-25 21:55:33 +0100 | [diff] [blame] | 149 | uint32_t code = (uint32_t)*cmd++; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 150 | size_t cmdIndex = code & 0xff; |
Bernhard RosenkrƤnzer | 74debb0 | 2014-11-25 21:55:33 +0100 | [diff] [blame] | 151 | if (code == BR_ERROR) { |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 152 | out << "BR_ERROR: " << (void*)(long)(*cmd++) << endl; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 153 | return cmd; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 154 | } else if (cmdIndex >= N) { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 155 | out << "Unknown reply: " << code << endl; |
| 156 | return cmd; |
| 157 | } |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 158 | out << kReturnStrings[cmdIndex]; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 159 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 160 | switch (code) { |
| 161 | case BR_TRANSACTION: |
| 162 | case BR_REPLY: { |
| 163 | out << ": " << indent; |
| 164 | cmd = (const int32_t *)printBinderTransactionData(out, cmd); |
| 165 | out << dedent; |
| 166 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 167 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 168 | case BR_ACQUIRE_RESULT: { |
| 169 | const int32_t res = *cmd++; |
| 170 | out << ": " << res << (res ? " (SUCCESS)" : " (FAILURE)"); |
| 171 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 172 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 173 | case BR_INCREFS: |
| 174 | case BR_ACQUIRE: |
| 175 | case BR_RELEASE: |
| 176 | case BR_DECREFS: { |
| 177 | const int32_t b = *cmd++; |
| 178 | const int32_t c = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 179 | out << ": target=" << (void*)(long)b << " (cookie " << (void*)(long)c << ")"; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 180 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 181 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 182 | case BR_ATTEMPT_ACQUIRE: { |
| 183 | const int32_t p = *cmd++; |
| 184 | const int32_t b = *cmd++; |
| 185 | const int32_t c = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 186 | out << ": target=" << (void*)(long)b << " (cookie " << (void*)(long)c |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 187 | << "), pri=" << p; |
| 188 | } break; |
| 189 | |
| 190 | case BR_DEAD_BINDER: |
| 191 | case BR_CLEAR_DEATH_NOTIFICATION_DONE: { |
| 192 | const int32_t c = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 193 | out << ": death cookie " << (void*)(long)c; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 194 | } break; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 195 | |
| 196 | default: |
| 197 | // no details to show for: BR_OK, BR_DEAD_REPLY, |
| 198 | // BR_TRANSACTION_COMPLETE, BR_FINISHED |
| 199 | break; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 200 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 201 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 202 | out << endl; |
| 203 | return cmd; |
| 204 | } |
| 205 | |
| 206 | static const void* printCommand(TextOutput& out, const void* _cmd) |
| 207 | { |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 208 | static const size_t N = sizeof(kCommandStrings)/sizeof(kCommandStrings[0]); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 209 | const int32_t* cmd = (const int32_t*)_cmd; |
Bernhard RosenkrƤnzer | 74debb0 | 2014-11-25 21:55:33 +0100 | [diff] [blame] | 210 | uint32_t code = (uint32_t)*cmd++; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 211 | size_t cmdIndex = code & 0xff; |
| 212 | |
| 213 | if (cmdIndex >= N) { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 214 | out << "Unknown command: " << code << endl; |
| 215 | return cmd; |
| 216 | } |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 217 | out << kCommandStrings[cmdIndex]; |
| 218 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 219 | switch (code) { |
| 220 | case BC_TRANSACTION: |
| 221 | case BC_REPLY: { |
| 222 | out << ": " << indent; |
| 223 | cmd = (const int32_t *)printBinderTransactionData(out, cmd); |
| 224 | out << dedent; |
| 225 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 226 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 227 | case BC_ACQUIRE_RESULT: { |
| 228 | const int32_t res = *cmd++; |
| 229 | out << ": " << res << (res ? " (SUCCESS)" : " (FAILURE)"); |
| 230 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 231 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 232 | case BC_FREE_BUFFER: { |
| 233 | const int32_t buf = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 234 | out << ": buffer=" << (void*)(long)buf; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 235 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 236 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 237 | case BC_INCREFS: |
| 238 | case BC_ACQUIRE: |
| 239 | case BC_RELEASE: |
| 240 | case BC_DECREFS: { |
| 241 | const int32_t d = *cmd++; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 242 | out << ": desc=" << d; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 243 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 244 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 245 | case BC_INCREFS_DONE: |
| 246 | case BC_ACQUIRE_DONE: { |
| 247 | const int32_t b = *cmd++; |
| 248 | const int32_t c = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 249 | out << ": target=" << (void*)(long)b << " (cookie " << (void*)(long)c << ")"; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 250 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 251 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 252 | case BC_ATTEMPT_ACQUIRE: { |
| 253 | const int32_t p = *cmd++; |
| 254 | const int32_t d = *cmd++; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 255 | out << ": desc=" << d << ", pri=" << p; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 256 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 257 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 258 | case BC_REQUEST_DEATH_NOTIFICATION: |
| 259 | case BC_CLEAR_DEATH_NOTIFICATION: { |
| 260 | const int32_t h = *cmd++; |
| 261 | const int32_t c = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 262 | out << ": handle=" << h << " (death cookie " << (void*)(long)c << ")"; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 263 | } break; |
| 264 | |
| 265 | case BC_DEAD_BINDER_DONE: { |
| 266 | const int32_t c = *cmd++; |
Chih-Hung Hsieh | 8e5337d | 2014-10-24 14:10:09 -0700 | [diff] [blame] | 267 | out << ": death cookie " << (void*)(long)c; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 268 | } break; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 269 | |
| 270 | default: |
| 271 | // no details to show for: BC_REGISTER_LOOPER, BC_ENTER_LOOPER, |
| 272 | // BC_EXIT_LOOPER |
| 273 | break; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 274 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 275 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 276 | out << endl; |
| 277 | return cmd; |
| 278 | } |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 279 | |
| 280 | static pthread_mutex_t gTLSMutex = PTHREAD_MUTEX_INITIALIZER; |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 281 | static std::atomic<bool> gHaveTLS(false); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 282 | static pthread_key_t gTLS = 0; |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 283 | static std::atomic<bool> gShutdown = false; |
| 284 | static std::atomic<bool> gDisableBackgroundScheduling = false; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 285 | |
| 286 | IPCThreadState* IPCThreadState::self() |
| 287 | { |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 288 | if (gHaveTLS.load(std::memory_order_acquire)) { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 289 | restart: |
| 290 | const pthread_key_t k = gTLS; |
| 291 | IPCThreadState* st = (IPCThreadState*)pthread_getspecific(k); |
| 292 | if (st) return st; |
| 293 | return new IPCThreadState; |
| 294 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 295 | |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 296 | // Racey, heuristic test for simultaneous shutdown. |
| 297 | if (gShutdown.load(std::memory_order_relaxed)) { |
Andreas Gampe | f31a3eb | 2016-02-01 13:21:56 -0800 | [diff] [blame] | 298 | ALOGW("Calling IPCThreadState::self() during shutdown is dangerous, expect a crash.\n"); |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 299 | return nullptr; |
Andreas Gampe | f31a3eb | 2016-02-01 13:21:56 -0800 | [diff] [blame] | 300 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 301 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 302 | pthread_mutex_lock(&gTLSMutex); |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 303 | if (!gHaveTLS.load(std::memory_order_relaxed)) { |
Andreas Gampe | f31a3eb | 2016-02-01 13:21:56 -0800 | [diff] [blame] | 304 | int key_create_value = pthread_key_create(&gTLS, threadDestructor); |
| 305 | if (key_create_value != 0) { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 306 | pthread_mutex_unlock(&gTLSMutex); |
Andreas Gampe | f31a3eb | 2016-02-01 13:21:56 -0800 | [diff] [blame] | 307 | ALOGW("IPCThreadState::self() unable to create TLS key, expect a crash: %s\n", |
| 308 | strerror(key_create_value)); |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 309 | return nullptr; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 310 | } |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 311 | gHaveTLS.store(true, std::memory_order_release); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 312 | } |
| 313 | pthread_mutex_unlock(&gTLSMutex); |
| 314 | goto restart; |
| 315 | } |
| 316 | |
Brad Fitzpatrick | 1b60843 | 2010-12-13 16:52:35 -0800 | [diff] [blame] | 317 | IPCThreadState* IPCThreadState::selfOrNull() |
| 318 | { |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 319 | if (gHaveTLS.load(std::memory_order_acquire)) { |
Brad Fitzpatrick | 1b60843 | 2010-12-13 16:52:35 -0800 | [diff] [blame] | 320 | const pthread_key_t k = gTLS; |
| 321 | IPCThreadState* st = (IPCThreadState*)pthread_getspecific(k); |
| 322 | return st; |
| 323 | } |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 324 | return nullptr; |
Brad Fitzpatrick | 1b60843 | 2010-12-13 16:52:35 -0800 | [diff] [blame] | 325 | } |
| 326 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 327 | void IPCThreadState::shutdown() |
| 328 | { |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 329 | gShutdown.store(true, std::memory_order_relaxed); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 330 | |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 331 | if (gHaveTLS.load(std::memory_order_acquire)) { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 332 | // XXX Need to wait for all thread pool threads to exit! |
| 333 | IPCThreadState* st = (IPCThreadState*)pthread_getspecific(gTLS); |
| 334 | if (st) { |
| 335 | delete st; |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 336 | pthread_setspecific(gTLS, nullptr); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 337 | } |
zhongjie | ff40578 | 2016-03-09 15:05:04 +0800 | [diff] [blame] | 338 | pthread_key_delete(gTLS); |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 339 | gHaveTLS.store(false, std::memory_order_release); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 340 | } |
| 341 | } |
| 342 | |
Dianne Hackborn | 8c6cedc | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 343 | void IPCThreadState::disableBackgroundScheduling(bool disable) |
| 344 | { |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 345 | gDisableBackgroundScheduling.store(disable, std::memory_order_relaxed); |
Dianne Hackborn | 8c6cedc | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 346 | } |
| 347 | |
Martijn Coenen | 2b63174 | 2017-05-05 11:16:59 -0700 | [diff] [blame] | 348 | bool IPCThreadState::backgroundSchedulingDisabled() |
| 349 | { |
Hans Boehm | a997b23 | 2019-04-12 16:59:00 -0700 | [diff] [blame] | 350 | return gDisableBackgroundScheduling.load(std::memory_order_relaxed); |
Martijn Coenen | 2b63174 | 2017-05-05 11:16:59 -0700 | [diff] [blame] | 351 | } |
| 352 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 353 | sp<ProcessState> IPCThreadState::process() |
| 354 | { |
| 355 | return mProcess; |
| 356 | } |
| 357 | |
| 358 | status_t IPCThreadState::clearLastError() |
| 359 | { |
| 360 | const status_t err = mLastError; |
| 361 | mLastError = NO_ERROR; |
| 362 | return err; |
| 363 | } |
| 364 | |
Dan Stoza | 9c634fd | 2014-11-26 12:23:23 -0800 | [diff] [blame] | 365 | pid_t IPCThreadState::getCallingPid() const |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 366 | { |
| 367 | return mCallingPid; |
| 368 | } |
| 369 | |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 370 | const char* IPCThreadState::getCallingSid() const |
| 371 | { |
| 372 | return mCallingSid; |
| 373 | } |
| 374 | |
Dan Stoza | 9c634fd | 2014-11-26 12:23:23 -0800 | [diff] [blame] | 375 | uid_t IPCThreadState::getCallingUid() const |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 376 | { |
| 377 | return mCallingUid; |
| 378 | } |
| 379 | |
| 380 | int64_t IPCThreadState::clearCallingIdentity() |
| 381 | { |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 382 | // ignore mCallingSid for legacy reasons |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 383 | int64_t token = ((int64_t)mCallingUid<<32) | mCallingPid; |
| 384 | clearCaller(); |
| 385 | return token; |
| 386 | } |
| 387 | |
Brad Fitzpatrick | 702ea9d | 2010-06-18 13:07:53 -0700 | [diff] [blame] | 388 | void IPCThreadState::setStrictModePolicy(int32_t policy) |
| 389 | { |
| 390 | mStrictModePolicy = policy; |
| 391 | } |
| 392 | |
Brad Fitzpatrick | a877cd8 | 2010-07-07 16:06:39 -0700 | [diff] [blame] | 393 | int32_t IPCThreadState::getStrictModePolicy() const |
| 394 | { |
Brad Fitzpatrick | 702ea9d | 2010-06-18 13:07:53 -0700 | [diff] [blame] | 395 | return mStrictModePolicy; |
| 396 | } |
| 397 | |
Brad Fitzpatrick | 5273603 | 2010-08-30 16:01:16 -0700 | [diff] [blame] | 398 | void IPCThreadState::setLastTransactionBinderFlags(int32_t flags) |
| 399 | { |
| 400 | mLastTransactionBinderFlags = flags; |
| 401 | } |
| 402 | |
| 403 | int32_t IPCThreadState::getLastTransactionBinderFlags() const |
| 404 | { |
| 405 | return mLastTransactionBinderFlags; |
| 406 | } |
| 407 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 408 | void IPCThreadState::restoreCallingIdentity(int64_t token) |
| 409 | { |
| 410 | mCallingUid = (int)(token>>32); |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 411 | mCallingSid = nullptr; // not enough data to restore |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 412 | mCallingPid = (int)token; |
| 413 | } |
| 414 | |
| 415 | void IPCThreadState::clearCaller() |
| 416 | { |
Marco Nelissen | d43b194 | 2009-07-17 07:59:17 -0700 | [diff] [blame] | 417 | mCallingPid = getpid(); |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 418 | mCallingSid = nullptr; // expensive to lookup |
Marco Nelissen | d43b194 | 2009-07-17 07:59:17 -0700 | [diff] [blame] | 419 | mCallingUid = getuid(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | void IPCThreadState::flushCommands() |
| 423 | { |
Alexandre BaiĆ£o | c60c4fc | 2019-07-31 12:29:31 -0200 | [diff] [blame^] | 424 | if (mProcess->mDriverFD < 0) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 425 | return; |
| 426 | talkWithDriver(false); |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 427 | // The flush could have caused post-write refcount decrements to have |
| 428 | // been executed, which in turn could result in BC_RELEASE/BC_DECREFS |
| 429 | // being queued in mOut. So flush again, if we need to. |
| 430 | if (mOut.dataSize() > 0) { |
| 431 | talkWithDriver(false); |
| 432 | } |
| 433 | if (mOut.dataSize() > 0) { |
| 434 | ALOGW("mOut.dataSize() > 0 after flushCommands()"); |
| 435 | } |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 436 | } |
| 437 | |
Wale Ogunwale | 376b822 | 2015-04-13 16:16:10 -0700 | [diff] [blame] | 438 | void IPCThreadState::blockUntilThreadAvailable() |
| 439 | { |
| 440 | pthread_mutex_lock(&mProcess->mThreadCountLock); |
| 441 | while (mProcess->mExecutingThreadsCount >= mProcess->mMaxThreads) { |
Wale Ogunwale | a3206e6 | 2015-04-21 12:29:50 -0700 | [diff] [blame] | 442 | ALOGW("Waiting for thread to be free. mExecutingThreadsCount=%lu mMaxThreads=%lu\n", |
| 443 | static_cast<unsigned long>(mProcess->mExecutingThreadsCount), |
| 444 | static_cast<unsigned long>(mProcess->mMaxThreads)); |
Wale Ogunwale | 376b822 | 2015-04-13 16:16:10 -0700 | [diff] [blame] | 445 | pthread_cond_wait(&mProcess->mThreadCountDecrement, &mProcess->mThreadCountLock); |
| 446 | } |
| 447 | pthread_mutex_unlock(&mProcess->mThreadCountLock); |
| 448 | } |
| 449 | |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 450 | status_t IPCThreadState::getAndExecuteCommand() |
| 451 | { |
| 452 | status_t result; |
| 453 | int32_t cmd; |
| 454 | |
| 455 | result = talkWithDriver(); |
| 456 | if (result >= NO_ERROR) { |
| 457 | size_t IN = mIn.dataAvail(); |
| 458 | if (IN < sizeof(int32_t)) return result; |
| 459 | cmd = mIn.readInt32(); |
| 460 | IF_LOG_COMMANDS() { |
| 461 | alog << "Processing top-level Command: " |
| 462 | << getReturnString(cmd) << endl; |
| 463 | } |
| 464 | |
Wale Ogunwale | 376b822 | 2015-04-13 16:16:10 -0700 | [diff] [blame] | 465 | pthread_mutex_lock(&mProcess->mThreadCountLock); |
| 466 | mProcess->mExecutingThreadsCount++; |
Colin Cross | 96e8322 | 2016-04-15 14:29:55 -0700 | [diff] [blame] | 467 | if (mProcess->mExecutingThreadsCount >= mProcess->mMaxThreads && |
| 468 | mProcess->mStarvationStartTimeMs == 0) { |
| 469 | mProcess->mStarvationStartTimeMs = uptimeMillis(); |
| 470 | } |
Wale Ogunwale | 376b822 | 2015-04-13 16:16:10 -0700 | [diff] [blame] | 471 | pthread_mutex_unlock(&mProcess->mThreadCountLock); |
| 472 | |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 473 | result = executeCommand(cmd); |
| 474 | |
Wale Ogunwale | 376b822 | 2015-04-13 16:16:10 -0700 | [diff] [blame] | 475 | pthread_mutex_lock(&mProcess->mThreadCountLock); |
| 476 | mProcess->mExecutingThreadsCount--; |
Colin Cross | 96e8322 | 2016-04-15 14:29:55 -0700 | [diff] [blame] | 477 | if (mProcess->mExecutingThreadsCount < mProcess->mMaxThreads && |
| 478 | mProcess->mStarvationStartTimeMs != 0) { |
| 479 | int64_t starvationTimeMs = uptimeMillis() - mProcess->mStarvationStartTimeMs; |
| 480 | if (starvationTimeMs > 100) { |
| 481 | ALOGE("binder thread pool (%zu threads) starved for %" PRId64 " ms", |
| 482 | mProcess->mMaxThreads, starvationTimeMs); |
| 483 | } |
| 484 | mProcess->mStarvationStartTimeMs = 0; |
| 485 | } |
Wale Ogunwale | 376b822 | 2015-04-13 16:16:10 -0700 | [diff] [blame] | 486 | pthread_cond_broadcast(&mProcess->mThreadCountDecrement); |
| 487 | pthread_mutex_unlock(&mProcess->mThreadCountLock); |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | return result; |
| 491 | } |
| 492 | |
| 493 | // When we've cleared the incoming command queue, process any pending derefs |
| 494 | void IPCThreadState::processPendingDerefs() |
| 495 | { |
| 496 | if (mIn.dataPosition() >= mIn.dataSize()) { |
Martijn Coenen | 0791fbf | 2017-08-08 15:36:16 +0200 | [diff] [blame] | 497 | /* |
| 498 | * The decWeak()/decStrong() calls may cause a destructor to run, |
| 499 | * which in turn could have initiated an outgoing transaction, |
| 500 | * which in turn could cause us to add to the pending refs |
| 501 | * vectors; so instead of simply iterating, loop until they're empty. |
| 502 | * |
| 503 | * We do this in an outer loop, because calling decStrong() |
| 504 | * may result in something being added to mPendingWeakDerefs, |
| 505 | * which could be delayed until the next incoming command |
| 506 | * from the driver if we don't process it now. |
| 507 | */ |
| 508 | while (mPendingWeakDerefs.size() > 0 || mPendingStrongDerefs.size() > 0) { |
| 509 | while (mPendingWeakDerefs.size() > 0) { |
| 510 | RefBase::weakref_type* refs = mPendingWeakDerefs[0]; |
| 511 | mPendingWeakDerefs.removeAt(0); |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 512 | refs->decWeak(mProcess.get()); |
| 513 | } |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 514 | |
Martijn Coenen | 0791fbf | 2017-08-08 15:36:16 +0200 | [diff] [blame] | 515 | if (mPendingStrongDerefs.size() > 0) { |
| 516 | // We don't use while() here because we don't want to re-order |
| 517 | // strong and weak decs at all; if this decStrong() causes both a |
| 518 | // decWeak() and a decStrong() to be queued, we want to process |
| 519 | // the decWeak() first. |
| 520 | BBinder* obj = mPendingStrongDerefs[0]; |
| 521 | mPendingStrongDerefs.removeAt(0); |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 522 | obj->decStrong(mProcess.get()); |
| 523 | } |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 524 | } |
| 525 | } |
| 526 | } |
| 527 | |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 528 | void IPCThreadState::processPostWriteDerefs() |
| 529 | { |
| 530 | for (size_t i = 0; i < mPostWriteWeakDerefs.size(); i++) { |
| 531 | RefBase::weakref_type* refs = mPostWriteWeakDerefs[i]; |
| 532 | refs->decWeak(mProcess.get()); |
| 533 | } |
| 534 | mPostWriteWeakDerefs.clear(); |
| 535 | |
| 536 | for (size_t i = 0; i < mPostWriteStrongDerefs.size(); i++) { |
| 537 | RefBase* obj = mPostWriteStrongDerefs[i]; |
| 538 | obj->decStrong(mProcess.get()); |
| 539 | } |
| 540 | mPostWriteStrongDerefs.clear(); |
| 541 | } |
| 542 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 543 | void IPCThreadState::joinThreadPool(bool isMain) |
| 544 | { |
| 545 | LOG_THREADPOOL("**** THREAD %p (PID %d) IS JOINING THE THREAD POOL\n", (void*)pthread_self(), getpid()); |
| 546 | |
| 547 | mOut.writeInt32(isMain ? BC_ENTER_LOOPER : BC_REGISTER_LOOPER); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 548 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 549 | status_t result; |
| 550 | do { |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 551 | processPendingDerefs(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 552 | // now get the next command to be processed, waiting if necessary |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 553 | result = getAndExecuteCommand(); |
Jason Parks | dcd3958 | 2009-11-03 12:14:38 -0800 | [diff] [blame] | 554 | |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 555 | if (result < NO_ERROR && result != TIMED_OUT && result != -ECONNREFUSED && result != -EBADF) { |
| 556 | ALOGE("getAndExecuteCommand(fd=%d) returned unexpected error %d, aborting", |
Jeff Tinker | ef07386 | 2013-06-11 11:30:21 -0700 | [diff] [blame] | 557 | mProcess->mDriverFD, result); |
| 558 | abort(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 559 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 560 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 561 | // Let this thread exit the thread pool if it is no longer |
| 562 | // needed and it is not the main process thread. |
| 563 | if(result == TIMED_OUT && !isMain) { |
| 564 | break; |
| 565 | } |
| 566 | } while (result != -ECONNREFUSED && result != -EBADF); |
| 567 | |
Wei Wang | c734143 | 2016-10-19 10:23:59 -0700 | [diff] [blame] | 568 | LOG_THREADPOOL("**** THREAD %p (PID %d) IS LEAVING THE THREAD POOL err=%d\n", |
| 569 | (void*)pthread_self(), getpid(), result); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 570 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 571 | mOut.writeInt32(BC_EXIT_LOOPER); |
| 572 | talkWithDriver(false); |
| 573 | } |
| 574 | |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 575 | int IPCThreadState::setupPolling(int* fd) |
| 576 | { |
Alexandre BaiĆ£o | c60c4fc | 2019-07-31 12:29:31 -0200 | [diff] [blame^] | 577 | if (mProcess->mDriverFD < 0) { |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 578 | return -EBADF; |
| 579 | } |
| 580 | |
| 581 | mOut.writeInt32(BC_ENTER_LOOPER); |
| 582 | *fd = mProcess->mDriverFD; |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | status_t IPCThreadState::handlePolledCommands() |
| 587 | { |
| 588 | status_t result; |
| 589 | |
| 590 | do { |
| 591 | result = getAndExecuteCommand(); |
| 592 | } while (mIn.dataPosition() < mIn.dataSize()); |
| 593 | |
| 594 | processPendingDerefs(); |
| 595 | flushCommands(); |
| 596 | return result; |
| 597 | } |
| 598 | |
Colin Cross | 6f4f3ab | 2014-02-05 17:42:44 -0800 | [diff] [blame] | 599 | void IPCThreadState::stopProcess(bool /*immediate*/) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 600 | { |
Steve Block | a19954a | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 601 | //ALOGI("**** STOPPING PROCESS"); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 602 | flushCommands(); |
| 603 | int fd = mProcess->mDriverFD; |
| 604 | mProcess->mDriverFD = -1; |
| 605 | close(fd); |
| 606 | //kill(getpid(), SIGKILL); |
| 607 | } |
| 608 | |
| 609 | status_t IPCThreadState::transact(int32_t handle, |
| 610 | uint32_t code, const Parcel& data, |
| 611 | Parcel* reply, uint32_t flags) |
| 612 | { |
Ganesh Mahendran | 58e5daa | 2017-10-11 18:05:13 +0800 | [diff] [blame] | 613 | status_t err; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 614 | |
| 615 | flags |= TF_ACCEPT_FDS; |
| 616 | |
| 617 | IF_LOG_TRANSACTIONS() { |
| 618 | TextOutput::Bundle _b(alog); |
| 619 | alog << "BC_TRANSACTION thr " << (void*)pthread_self() << " / hand " |
| 620 | << handle << " / code " << TypeCode(code) << ": " |
| 621 | << indent << data << dedent << endl; |
| 622 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 623 | |
Ganesh Mahendran | 58e5daa | 2017-10-11 18:05:13 +0800 | [diff] [blame] | 624 | LOG_ONEWAY(">>>> SEND from pid %d uid %d %s", getpid(), getuid(), |
| 625 | (flags & TF_ONE_WAY) == 0 ? "READ REPLY" : "ONE WAY"); |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 626 | err = writeTransactionData(BC_TRANSACTION, flags, handle, code, data, nullptr); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 627 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 628 | if (err != NO_ERROR) { |
| 629 | if (reply) reply->setError(err); |
| 630 | return (mLastError = err); |
| 631 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 632 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 633 | if ((flags & TF_ONE_WAY) == 0) { |
Steven Moreland | 7732a09 | 2019-01-02 17:54:16 -0800 | [diff] [blame] | 634 | if (UNLIKELY(mCallRestriction != ProcessState::CallRestriction::NONE)) { |
| 635 | if (mCallRestriction == ProcessState::CallRestriction::ERROR_IF_NOT_ONEWAY) { |
Steven Moreland | 8cb34fc | 2019-05-13 11:44:55 -0700 | [diff] [blame] | 636 | ALOGE("Process making non-oneway call (code: %u) but is restricted.", code); |
Steven Moreland | 7732a09 | 2019-01-02 17:54:16 -0800 | [diff] [blame] | 637 | CallStack::logStack("non-oneway call", CallStack::getCurrent(10).get(), |
| 638 | ANDROID_LOG_ERROR); |
| 639 | } else /* FATAL_IF_NOT_ONEWAY */ { |
Steven Moreland | 8cb34fc | 2019-05-13 11:44:55 -0700 | [diff] [blame] | 640 | LOG_ALWAYS_FATAL("Process may not make oneway calls (code: %u).", code); |
Steven Moreland | 7732a09 | 2019-01-02 17:54:16 -0800 | [diff] [blame] | 641 | } |
| 642 | } |
| 643 | |
Dianne Hackborn | 67f78c4 | 2010-09-24 11:16:23 -0700 | [diff] [blame] | 644 | #if 0 |
| 645 | if (code == 4) { // relayout |
Steve Block | a19954a | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 646 | ALOGI(">>>>>> CALLING transaction 4"); |
Dianne Hackborn | 67f78c4 | 2010-09-24 11:16:23 -0700 | [diff] [blame] | 647 | } else { |
Steve Block | a19954a | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 648 | ALOGI(">>>>>> CALLING transaction %d", code); |
Dianne Hackborn | 67f78c4 | 2010-09-24 11:16:23 -0700 | [diff] [blame] | 649 | } |
| 650 | #endif |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 651 | if (reply) { |
| 652 | err = waitForResponse(reply); |
| 653 | } else { |
| 654 | Parcel fakeReply; |
| 655 | err = waitForResponse(&fakeReply); |
| 656 | } |
Dianne Hackborn | 67f78c4 | 2010-09-24 11:16:23 -0700 | [diff] [blame] | 657 | #if 0 |
| 658 | if (code == 4) { // relayout |
Steve Block | a19954a | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 659 | ALOGI("<<<<<< RETURNING transaction 4"); |
Dianne Hackborn | 67f78c4 | 2010-09-24 11:16:23 -0700 | [diff] [blame] | 660 | } else { |
Steve Block | a19954a | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 661 | ALOGI("<<<<<< RETURNING transaction %d", code); |
Dianne Hackborn | 67f78c4 | 2010-09-24 11:16:23 -0700 | [diff] [blame] | 662 | } |
| 663 | #endif |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 664 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 665 | IF_LOG_TRANSACTIONS() { |
| 666 | TextOutput::Bundle _b(alog); |
| 667 | alog << "BR_REPLY thr " << (void*)pthread_self() << " / hand " |
| 668 | << handle << ": "; |
| 669 | if (reply) alog << indent << *reply << dedent << endl; |
| 670 | else alog << "(none requested)" << endl; |
| 671 | } |
| 672 | } else { |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 673 | err = waitForResponse(nullptr, nullptr); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 674 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 675 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 676 | return err; |
| 677 | } |
| 678 | |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 679 | void IPCThreadState::incStrongHandle(int32_t handle, BpBinder *proxy) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 680 | { |
| 681 | LOG_REMOTEREFS("IPCThreadState::incStrongHandle(%d)\n", handle); |
| 682 | mOut.writeInt32(BC_ACQUIRE); |
| 683 | mOut.writeInt32(handle); |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 684 | // Create a temp reference until the driver has handled this command. |
| 685 | proxy->incStrong(mProcess.get()); |
| 686 | mPostWriteStrongDerefs.push(proxy); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | void IPCThreadState::decStrongHandle(int32_t handle) |
| 690 | { |
| 691 | LOG_REMOTEREFS("IPCThreadState::decStrongHandle(%d)\n", handle); |
| 692 | mOut.writeInt32(BC_RELEASE); |
| 693 | mOut.writeInt32(handle); |
| 694 | } |
| 695 | |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 696 | void IPCThreadState::incWeakHandle(int32_t handle, BpBinder *proxy) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 697 | { |
| 698 | LOG_REMOTEREFS("IPCThreadState::incWeakHandle(%d)\n", handle); |
| 699 | mOut.writeInt32(BC_INCREFS); |
| 700 | mOut.writeInt32(handle); |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 701 | // Create a temp reference until the driver has handled this command. |
| 702 | proxy->getWeakRefs()->incWeak(mProcess.get()); |
| 703 | mPostWriteWeakDerefs.push(proxy->getWeakRefs()); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | void IPCThreadState::decWeakHandle(int32_t handle) |
| 707 | { |
| 708 | LOG_REMOTEREFS("IPCThreadState::decWeakHandle(%d)\n", handle); |
| 709 | mOut.writeInt32(BC_DECREFS); |
| 710 | mOut.writeInt32(handle); |
| 711 | } |
| 712 | |
| 713 | status_t IPCThreadState::attemptIncStrongHandle(int32_t handle) |
| 714 | { |
Arve HjĆønnevĆ„g | 11cfdcc | 2014-02-14 20:14:02 -0800 | [diff] [blame] | 715 | #if HAS_BC_ATTEMPT_ACQUIRE |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 716 | LOG_REMOTEREFS("IPCThreadState::attemptIncStrongHandle(%d)\n", handle); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 717 | mOut.writeInt32(BC_ATTEMPT_ACQUIRE); |
| 718 | mOut.writeInt32(0); // xxx was thread priority |
| 719 | mOut.writeInt32(handle); |
| 720 | status_t result = UNKNOWN_ERROR; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 721 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 722 | waitForResponse(NULL, &result); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 723 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 724 | #if LOG_REFCOUNTS |
liangweikang | a43ee15 | 2016-10-25 16:37:54 +0800 | [diff] [blame] | 725 | ALOGV("IPCThreadState::attemptIncStrongHandle(%ld) = %s\n", |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 726 | handle, result == NO_ERROR ? "SUCCESS" : "FAILURE"); |
| 727 | #endif |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 728 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 729 | return result; |
Arve HjĆønnevĆ„g | 11cfdcc | 2014-02-14 20:14:02 -0800 | [diff] [blame] | 730 | #else |
| 731 | (void)handle; |
| 732 | ALOGE("%s(%d): Not supported\n", __func__, handle); |
| 733 | return INVALID_OPERATION; |
| 734 | #endif |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | void IPCThreadState::expungeHandle(int32_t handle, IBinder* binder) |
| 738 | { |
| 739 | #if LOG_REFCOUNTS |
liangweikang | a43ee15 | 2016-10-25 16:37:54 +0800 | [diff] [blame] | 740 | ALOGV("IPCThreadState::expungeHandle(%ld)\n", handle); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 741 | #endif |
Manoj Gupta | 9cec85b | 2017-09-19 16:34:29 -0700 | [diff] [blame] | 742 | self()->mProcess->expungeHandle(handle, binder); // NOLINT |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | status_t IPCThreadState::requestDeathNotification(int32_t handle, BpBinder* proxy) |
| 746 | { |
| 747 | mOut.writeInt32(BC_REQUEST_DEATH_NOTIFICATION); |
| 748 | mOut.writeInt32((int32_t)handle); |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 749 | mOut.writePointer((uintptr_t)proxy); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 750 | return NO_ERROR; |
| 751 | } |
| 752 | |
| 753 | status_t IPCThreadState::clearDeathNotification(int32_t handle, BpBinder* proxy) |
| 754 | { |
| 755 | mOut.writeInt32(BC_CLEAR_DEATH_NOTIFICATION); |
| 756 | mOut.writeInt32((int32_t)handle); |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 757 | mOut.writePointer((uintptr_t)proxy); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 758 | return NO_ERROR; |
| 759 | } |
| 760 | |
| 761 | IPCThreadState::IPCThreadState() |
Brad Fitzpatrick | 5273603 | 2010-08-30 16:01:16 -0700 | [diff] [blame] | 762 | : mProcess(ProcessState::self()), |
Brad Fitzpatrick | 5273603 | 2010-08-30 16:01:16 -0700 | [diff] [blame] | 763 | mStrictModePolicy(0), |
Steven Moreland | 7732a09 | 2019-01-02 17:54:16 -0800 | [diff] [blame] | 764 | mLastTransactionBinderFlags(0), |
| 765 | mCallRestriction(mProcess->mCallRestriction) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 766 | { |
| 767 | pthread_setspecific(gTLS, this); |
Dianne Hackborn | 8c6cedc | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 768 | clearCaller(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 769 | mIn.setDataCapacity(256); |
| 770 | mOut.setDataCapacity(256); |
Jayant Chowdhary | dac6dc8 | 2018-10-01 22:52:44 +0000 | [diff] [blame] | 771 | mIPCThreadStateBase = IPCThreadStateBase::self(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | IPCThreadState::~IPCThreadState() |
| 775 | { |
| 776 | } |
| 777 | |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 778 | status_t IPCThreadState::sendReply(const Parcel& reply, uint32_t flags) |
| 779 | { |
| 780 | status_t err; |
| 781 | status_t statusBuffer; |
| 782 | err = writeTransactionData(BC_REPLY, flags, -1, 0, reply, &statusBuffer); |
| 783 | if (err < NO_ERROR) return err; |
| 784 | |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 785 | return waitForResponse(nullptr, nullptr); |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 786 | } |
| 787 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 788 | status_t IPCThreadState::waitForResponse(Parcel *reply, status_t *acquireResult) |
| 789 | { |
Bernhard RosenkrƤnzer | 74debb0 | 2014-11-25 21:55:33 +0100 | [diff] [blame] | 790 | uint32_t cmd; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 791 | int32_t err; |
| 792 | |
| 793 | while (1) { |
| 794 | if ((err=talkWithDriver()) < NO_ERROR) break; |
| 795 | err = mIn.errorCheck(); |
| 796 | if (err < NO_ERROR) break; |
| 797 | if (mIn.dataAvail() == 0) continue; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 798 | |
Bernhard RosenkrƤnzer | 74debb0 | 2014-11-25 21:55:33 +0100 | [diff] [blame] | 799 | cmd = (uint32_t)mIn.readInt32(); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 800 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 801 | IF_LOG_COMMANDS() { |
| 802 | alog << "Processing waitForResponse Command: " |
| 803 | << getReturnString(cmd) << endl; |
| 804 | } |
| 805 | |
| 806 | switch (cmd) { |
| 807 | case BR_TRANSACTION_COMPLETE: |
| 808 | if (!reply && !acquireResult) goto finish; |
| 809 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 810 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 811 | case BR_DEAD_REPLY: |
| 812 | err = DEAD_OBJECT; |
| 813 | goto finish; |
| 814 | |
| 815 | case BR_FAILED_REPLY: |
| 816 | err = FAILED_TRANSACTION; |
| 817 | goto finish; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 818 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 819 | case BR_ACQUIRE_RESULT: |
| 820 | { |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 821 | ALOG_ASSERT(acquireResult != NULL, "Unexpected brACQUIRE_RESULT"); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 822 | const int32_t result = mIn.readInt32(); |
| 823 | if (!acquireResult) continue; |
| 824 | *acquireResult = result ? NO_ERROR : INVALID_OPERATION; |
| 825 | } |
| 826 | goto finish; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 827 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 828 | case BR_REPLY: |
| 829 | { |
| 830 | binder_transaction_data tr; |
| 831 | err = mIn.read(&tr, sizeof(tr)); |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 832 | ALOG_ASSERT(err == NO_ERROR, "Not enough command data for brREPLY"); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 833 | if (err != NO_ERROR) goto finish; |
| 834 | |
| 835 | if (reply) { |
| 836 | if ((tr.flags & TF_STATUS_CODE) == 0) { |
| 837 | reply->ipcSetDataReference( |
| 838 | reinterpret_cast<const uint8_t*>(tr.data.ptr.buffer), |
| 839 | tr.data_size, |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 840 | reinterpret_cast<const binder_size_t*>(tr.data.ptr.offsets), |
| 841 | tr.offsets_size/sizeof(binder_size_t), |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 842 | freeBuffer, this); |
| 843 | } else { |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 844 | err = *reinterpret_cast<const status_t*>(tr.data.ptr.buffer); |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 845 | freeBuffer(nullptr, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 846 | reinterpret_cast<const uint8_t*>(tr.data.ptr.buffer), |
| 847 | tr.data_size, |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 848 | reinterpret_cast<const binder_size_t*>(tr.data.ptr.offsets), |
| 849 | tr.offsets_size/sizeof(binder_size_t), this); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 850 | } |
| 851 | } else { |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 852 | freeBuffer(nullptr, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 853 | reinterpret_cast<const uint8_t*>(tr.data.ptr.buffer), |
| 854 | tr.data_size, |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 855 | reinterpret_cast<const binder_size_t*>(tr.data.ptr.offsets), |
| 856 | tr.offsets_size/sizeof(binder_size_t), this); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 857 | continue; |
| 858 | } |
| 859 | } |
| 860 | goto finish; |
| 861 | |
| 862 | default: |
| 863 | err = executeCommand(cmd); |
| 864 | if (err != NO_ERROR) goto finish; |
| 865 | break; |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | finish: |
| 870 | if (err != NO_ERROR) { |
| 871 | if (acquireResult) *acquireResult = err; |
| 872 | if (reply) reply->setError(err); |
| 873 | mLastError = err; |
| 874 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 875 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 876 | return err; |
| 877 | } |
| 878 | |
| 879 | status_t IPCThreadState::talkWithDriver(bool doReceive) |
| 880 | { |
Alexandre BaiĆ£o | c60c4fc | 2019-07-31 12:29:31 -0200 | [diff] [blame^] | 881 | if (mProcess->mDriverFD < 0) { |
Johannes Carlsson | db1597a | 2011-02-17 14:06:53 +0100 | [diff] [blame] | 882 | return -EBADF; |
| 883 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 884 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 885 | binder_write_read bwr; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 886 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 887 | // Is the read buffer empty? |
| 888 | const bool needRead = mIn.dataPosition() >= mIn.dataSize(); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 889 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 890 | // We don't want to write anything if we are still reading |
| 891 | // from data left in the input buffer and the caller |
| 892 | // has requested to read the next data. |
| 893 | const size_t outAvail = (!doReceive || needRead) ? mOut.dataSize() : 0; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 894 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 895 | bwr.write_size = outAvail; |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 896 | bwr.write_buffer = (uintptr_t)mOut.data(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 897 | |
| 898 | // This is what we'll read. |
| 899 | if (doReceive && needRead) { |
| 900 | bwr.read_size = mIn.dataCapacity(); |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 901 | bwr.read_buffer = (uintptr_t)mIn.data(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 902 | } else { |
| 903 | bwr.read_size = 0; |
Ben Cheng | d640f89 | 2011-12-01 17:11:32 -0800 | [diff] [blame] | 904 | bwr.read_buffer = 0; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 905 | } |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 906 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 907 | IF_LOG_COMMANDS() { |
| 908 | TextOutput::Bundle _b(alog); |
| 909 | if (outAvail != 0) { |
| 910 | alog << "Sending commands to driver: " << indent; |
| 911 | const void* cmds = (const void*)bwr.write_buffer; |
| 912 | const void* end = ((const uint8_t*)cmds)+bwr.write_size; |
| 913 | alog << HexDump(cmds, bwr.write_size) << endl; |
| 914 | while (cmds < end) cmds = printCommand(alog, cmds); |
| 915 | alog << dedent; |
| 916 | } |
| 917 | alog << "Size of receive buffer: " << bwr.read_size |
| 918 | << ", needRead: " << needRead << ", doReceive: " << doReceive << endl; |
| 919 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 920 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 921 | // Return immediately if there is nothing to do. |
| 922 | if ((bwr.write_size == 0) && (bwr.read_size == 0)) return NO_ERROR; |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 923 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 924 | bwr.write_consumed = 0; |
| 925 | bwr.read_consumed = 0; |
| 926 | status_t err; |
| 927 | do { |
| 928 | IF_LOG_COMMANDS() { |
| 929 | alog << "About to read/write, write size = " << mOut.dataSize() << endl; |
| 930 | } |
Elliott Hughes | 6071da7 | 2015-08-12 15:27:47 -0700 | [diff] [blame] | 931 | #if defined(__ANDROID__) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 932 | if (ioctl(mProcess->mDriverFD, BINDER_WRITE_READ, &bwr) >= 0) |
| 933 | err = NO_ERROR; |
| 934 | else |
| 935 | err = -errno; |
| 936 | #else |
| 937 | err = INVALID_OPERATION; |
| 938 | #endif |
Alexandre BaiĆ£o | c60c4fc | 2019-07-31 12:29:31 -0200 | [diff] [blame^] | 939 | if (mProcess->mDriverFD < 0) { |
Johannes Carlsson | db1597a | 2011-02-17 14:06:53 +0100 | [diff] [blame] | 940 | err = -EBADF; |
| 941 | } |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 942 | IF_LOG_COMMANDS() { |
| 943 | alog << "Finished read/write, write size = " << mOut.dataSize() << endl; |
| 944 | } |
| 945 | } while (err == -EINTR); |
Andy McFadden | aefc9cd | 2011-08-31 07:43:40 -0700 | [diff] [blame] | 946 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 947 | IF_LOG_COMMANDS() { |
Colin Cross | 6f4f3ab | 2014-02-05 17:42:44 -0800 | [diff] [blame] | 948 | alog << "Our err: " << (void*)(intptr_t)err << ", write consumed: " |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 949 | << bwr.write_consumed << " (of " << mOut.dataSize() |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 950 | << "), read consumed: " << bwr.read_consumed << endl; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 951 | } |
| 952 | |
| 953 | if (err >= NO_ERROR) { |
| 954 | if (bwr.write_consumed > 0) { |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 955 | if (bwr.write_consumed < mOut.dataSize()) |
Steven Moreland | 80afc6f | 2019-07-15 13:28:44 -0700 | [diff] [blame] | 956 | LOG_ALWAYS_FATAL("Driver did not consume write buffer"); |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 957 | else { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 958 | mOut.setDataSize(0); |
Martijn Coenen | 7c170bb | 2018-05-04 17:28:55 -0700 | [diff] [blame] | 959 | processPostWriteDerefs(); |
| 960 | } |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 961 | } |
| 962 | if (bwr.read_consumed > 0) { |
| 963 | mIn.setDataSize(bwr.read_consumed); |
| 964 | mIn.setDataPosition(0); |
| 965 | } |
| 966 | IF_LOG_COMMANDS() { |
| 967 | TextOutput::Bundle _b(alog); |
| 968 | alog << "Remaining data size: " << mOut.dataSize() << endl; |
| 969 | alog << "Received commands from driver: " << indent; |
| 970 | const void* cmds = mIn.data(); |
| 971 | const void* end = mIn.data() + mIn.dataSize(); |
| 972 | alog << HexDump(cmds, mIn.dataSize()) << endl; |
| 973 | while (cmds < end) cmds = printReturnCommand(alog, cmds); |
| 974 | alog << dedent; |
| 975 | } |
| 976 | return NO_ERROR; |
| 977 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 978 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 979 | return err; |
| 980 | } |
| 981 | |
| 982 | status_t IPCThreadState::writeTransactionData(int32_t cmd, uint32_t binderFlags, |
| 983 | int32_t handle, uint32_t code, const Parcel& data, status_t* statusBuffer) |
| 984 | { |
| 985 | binder_transaction_data tr; |
| 986 | |
Arve HjĆønnevĆ„g | 07fd0f1 | 2014-02-18 21:10:29 -0800 | [diff] [blame] | 987 | tr.target.ptr = 0; /* Don't pass uninitialized stack data to a remote process */ |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 988 | tr.target.handle = handle; |
| 989 | tr.code = code; |
| 990 | tr.flags = binderFlags; |
Evgeniy Stepanov | d547432 | 2011-04-21 14:15:00 +0400 | [diff] [blame] | 991 | tr.cookie = 0; |
| 992 | tr.sender_pid = 0; |
| 993 | tr.sender_euid = 0; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 994 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 995 | const status_t err = data.errorCheck(); |
| 996 | if (err == NO_ERROR) { |
| 997 | tr.data_size = data.ipcDataSize(); |
| 998 | tr.data.ptr.buffer = data.ipcData(); |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 999 | tr.offsets_size = data.ipcObjectsCount()*sizeof(binder_size_t); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1000 | tr.data.ptr.offsets = data.ipcObjects(); |
| 1001 | } else if (statusBuffer) { |
| 1002 | tr.flags |= TF_STATUS_CODE; |
| 1003 | *statusBuffer = err; |
| 1004 | tr.data_size = sizeof(status_t); |
Arve HjĆønnevĆ„g | 87b30d0 | 2014-02-18 21:04:31 -0800 | [diff] [blame] | 1005 | tr.data.ptr.buffer = reinterpret_cast<uintptr_t>(statusBuffer); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1006 | tr.offsets_size = 0; |
Arve HjĆønnevĆ„g | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 1007 | tr.data.ptr.offsets = 0; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1008 | } else { |
| 1009 | return (mLastError = err); |
| 1010 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1011 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1012 | mOut.writeInt32(cmd); |
| 1013 | mOut.write(&tr, sizeof(tr)); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1014 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1015 | return NO_ERROR; |
| 1016 | } |
| 1017 | |
| 1018 | sp<BBinder> the_context_object; |
| 1019 | |
| 1020 | void setTheContextObject(sp<BBinder> obj) |
| 1021 | { |
| 1022 | the_context_object = obj; |
| 1023 | } |
| 1024 | |
| 1025 | status_t IPCThreadState::executeCommand(int32_t cmd) |
| 1026 | { |
| 1027 | BBinder* obj; |
| 1028 | RefBase::weakref_type* refs; |
| 1029 | status_t result = NO_ERROR; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1030 | |
Bernhard RosenkrƤnzer | 74debb0 | 2014-11-25 21:55:33 +0100 | [diff] [blame] | 1031 | switch ((uint32_t)cmd) { |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1032 | case BR_ERROR: |
| 1033 | result = mIn.readInt32(); |
| 1034 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1035 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1036 | case BR_OK: |
| 1037 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1038 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1039 | case BR_ACQUIRE: |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1040 | refs = (RefBase::weakref_type*)mIn.readPointer(); |
| 1041 | obj = (BBinder*)mIn.readPointer(); |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 1042 | ALOG_ASSERT(refs->refBase() == obj, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1043 | "BR_ACQUIRE: object %p does not match cookie %p (expected %p)", |
| 1044 | refs, obj, refs->refBase()); |
| 1045 | obj->incStrong(mProcess.get()); |
| 1046 | IF_LOG_REMOTEREFS() { |
| 1047 | LOG_REMOTEREFS("BR_ACQUIRE from driver on %p", obj); |
| 1048 | obj->printRefs(); |
| 1049 | } |
| 1050 | mOut.writeInt32(BC_ACQUIRE_DONE); |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1051 | mOut.writePointer((uintptr_t)refs); |
| 1052 | mOut.writePointer((uintptr_t)obj); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1053 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1054 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1055 | case BR_RELEASE: |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1056 | refs = (RefBase::weakref_type*)mIn.readPointer(); |
| 1057 | obj = (BBinder*)mIn.readPointer(); |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 1058 | ALOG_ASSERT(refs->refBase() == obj, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1059 | "BR_RELEASE: object %p does not match cookie %p (expected %p)", |
| 1060 | refs, obj, refs->refBase()); |
| 1061 | IF_LOG_REMOTEREFS() { |
| 1062 | LOG_REMOTEREFS("BR_RELEASE from driver on %p", obj); |
| 1063 | obj->printRefs(); |
| 1064 | } |
| 1065 | mPendingStrongDerefs.push(obj); |
| 1066 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1067 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1068 | case BR_INCREFS: |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1069 | refs = (RefBase::weakref_type*)mIn.readPointer(); |
| 1070 | obj = (BBinder*)mIn.readPointer(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1071 | refs->incWeak(mProcess.get()); |
| 1072 | mOut.writeInt32(BC_INCREFS_DONE); |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1073 | mOut.writePointer((uintptr_t)refs); |
| 1074 | mOut.writePointer((uintptr_t)obj); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1075 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1076 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1077 | case BR_DECREFS: |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1078 | refs = (RefBase::weakref_type*)mIn.readPointer(); |
| 1079 | obj = (BBinder*)mIn.readPointer(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1080 | // NOTE: This assertion is not valid, because the object may no |
| 1081 | // longer exist (thus the (BBinder*)cast above resulting in a different |
| 1082 | // memory address). |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 1083 | //ALOG_ASSERT(refs->refBase() == obj, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1084 | // "BR_DECREFS: object %p does not match cookie %p (expected %p)", |
| 1085 | // refs, obj, refs->refBase()); |
| 1086 | mPendingWeakDerefs.push(refs); |
| 1087 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1088 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1089 | case BR_ATTEMPT_ACQUIRE: |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1090 | refs = (RefBase::weakref_type*)mIn.readPointer(); |
| 1091 | obj = (BBinder*)mIn.readPointer(); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1092 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1093 | { |
| 1094 | const bool success = refs->attemptIncStrong(mProcess.get()); |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 1095 | ALOG_ASSERT(success && refs->refBase() == obj, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1096 | "BR_ATTEMPT_ACQUIRE: object %p does not match cookie %p (expected %p)", |
| 1097 | refs, obj, refs->refBase()); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1098 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1099 | mOut.writeInt32(BC_ACQUIRE_RESULT); |
| 1100 | mOut.writeInt32((int32_t)success); |
| 1101 | } |
| 1102 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1103 | |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1104 | case BR_TRANSACTION_SEC_CTX: |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1105 | case BR_TRANSACTION: |
| 1106 | { |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1107 | binder_transaction_data_secctx tr_secctx; |
| 1108 | binder_transaction_data& tr = tr_secctx.transaction_data; |
| 1109 | |
| 1110 | if (cmd == (int) BR_TRANSACTION_SEC_CTX) { |
| 1111 | result = mIn.read(&tr_secctx, sizeof(tr_secctx)); |
| 1112 | } else { |
| 1113 | result = mIn.read(&tr, sizeof(tr)); |
| 1114 | tr_secctx.secctx = 0; |
| 1115 | } |
| 1116 | |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 1117 | ALOG_ASSERT(result == NO_ERROR, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1118 | "Not enough command data for brTRANSACTION"); |
| 1119 | if (result != NO_ERROR) break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1120 | |
Jayant Chowdhary | dac6dc8 | 2018-10-01 22:52:44 +0000 | [diff] [blame] | 1121 | //Record the fact that we're in a binder call. |
| 1122 | mIPCThreadStateBase->pushCurrentState( |
| 1123 | IPCThreadStateBase::CallState::BINDER); |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1124 | Parcel buffer; |
| 1125 | buffer.ipcSetDataReference( |
| 1126 | reinterpret_cast<const uint8_t*>(tr.data.ptr.buffer), |
| 1127 | tr.data_size, |
| 1128 | reinterpret_cast<const binder_size_t*>(tr.data.ptr.offsets), |
| 1129 | tr.offsets_size/sizeof(binder_size_t), freeBuffer, this); |
| 1130 | |
| 1131 | const pid_t origPid = mCallingPid; |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1132 | const char* origSid = mCallingSid; |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1133 | const uid_t origUid = mCallingUid; |
| 1134 | const int32_t origStrictModePolicy = mStrictModePolicy; |
| 1135 | const int32_t origTransactionBinderFlags = mLastTransactionBinderFlags; |
| 1136 | |
| 1137 | mCallingPid = tr.sender_pid; |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1138 | mCallingSid = reinterpret_cast<const char*>(tr_secctx.secctx); |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1139 | mCallingUid = tr.sender_euid; |
| 1140 | mLastTransactionBinderFlags = tr.flags; |
| 1141 | |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1142 | // ALOGI(">>>> TRANSACT from pid %d sid %s uid %d\n", mCallingPid, |
| 1143 | // (mCallingSid ? mCallingSid : "<N/A>"), mCallingUid); |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1144 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1145 | Parcel reply; |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1146 | status_t error; |
| 1147 | IF_LOG_TRANSACTIONS() { |
| 1148 | TextOutput::Bundle _b(alog); |
| 1149 | alog << "BR_TRANSACTION thr " << (void*)pthread_self() |
| 1150 | << " / obj " << tr.target.ptr << " / code " |
| 1151 | << TypeCode(tr.code) << ": " << indent << buffer |
| 1152 | << dedent << endl |
| 1153 | << "Data addr = " |
| 1154 | << reinterpret_cast<const uint8_t*>(tr.data.ptr.buffer) |
| 1155 | << ", offsets addr=" |
| 1156 | << reinterpret_cast<const size_t*>(tr.data.ptr.offsets) << endl; |
| 1157 | } |
| 1158 | if (tr.target.ptr) { |
| 1159 | // We only have a weak reference on the target object, so we must first try to |
| 1160 | // safely acquire a strong reference before doing anything else with it. |
| 1161 | if (reinterpret_cast<RefBase::weakref_type*>( |
| 1162 | tr.target.ptr)->attemptIncStrong(this)) { |
| 1163 | error = reinterpret_cast<BBinder*>(tr.cookie)->transact(tr.code, buffer, |
| 1164 | &reply, tr.flags); |
| 1165 | reinterpret_cast<BBinder*>(tr.cookie)->decStrong(this); |
Dianne Hackborn | c111461 | 2016-03-21 10:36:54 -0700 | [diff] [blame] | 1166 | } else { |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1167 | error = UNKNOWN_TRANSACTION; |
Dianne Hackborn | c111461 | 2016-03-21 10:36:54 -0700 | [diff] [blame] | 1168 | } |
Brad Fitzpatrick | 5273603 | 2010-08-30 16:01:16 -0700 | [diff] [blame] | 1169 | |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1170 | } else { |
| 1171 | error = the_context_object->transact(tr.code, buffer, &reply, tr.flags); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1172 | } |
Dianne Hackborn | 5ee2c9d | 2014-09-30 11:30:03 -0700 | [diff] [blame] | 1173 | |
Jayant Chowdhary | dac6dc8 | 2018-10-01 22:52:44 +0000 | [diff] [blame] | 1174 | mIPCThreadStateBase->popCurrentState(); |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1175 | //ALOGI("<<<< TRANSACT from pid %d restore pid %d sid %s uid %d\n", |
| 1176 | // mCallingPid, origPid, (origSid ? origSid : "<N/A>"), origUid); |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1177 | |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1178 | if ((tr.flags & TF_ONE_WAY) == 0) { |
| 1179 | LOG_ONEWAY("Sending reply to %d!", mCallingPid); |
| 1180 | if (error < NO_ERROR) reply.setError(error); |
| 1181 | sendReply(reply, 0); |
| 1182 | } else { |
| 1183 | LOG_ONEWAY("NOT sending reply to %d!", mCallingPid); |
| 1184 | } |
| 1185 | |
| 1186 | mCallingPid = origPid; |
Steven Moreland | 3085a47 | 2018-12-26 13:59:23 -0800 | [diff] [blame] | 1187 | mCallingSid = origSid; |
Martijn Coenen | ea0090a | 2017-11-02 18:54:40 +0000 | [diff] [blame] | 1188 | mCallingUid = origUid; |
| 1189 | mStrictModePolicy = origStrictModePolicy; |
| 1190 | mLastTransactionBinderFlags = origTransactionBinderFlags; |
Christopher Tate | 440fd87 | 2010-03-18 17:55:03 -0700 | [diff] [blame] | 1191 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1192 | IF_LOG_TRANSACTIONS() { |
| 1193 | TextOutput::Bundle _b(alog); |
| 1194 | alog << "BC_REPLY thr " << (void*)pthread_self() << " / obj " |
| 1195 | << tr.target.ptr << ": " << indent << reply << dedent << endl; |
| 1196 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1197 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1198 | } |
| 1199 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1200 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1201 | case BR_DEAD_BINDER: |
| 1202 | { |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1203 | BpBinder *proxy = (BpBinder*)mIn.readPointer(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1204 | proxy->sendObituary(); |
| 1205 | mOut.writeInt32(BC_DEAD_BINDER_DONE); |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1206 | mOut.writePointer((uintptr_t)proxy); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1207 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1208 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1209 | case BR_CLEAR_DEATH_NOTIFICATION_DONE: |
| 1210 | { |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1211 | BpBinder *proxy = (BpBinder*)mIn.readPointer(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1212 | proxy->getWeakRefs()->decWeak(proxy); |
| 1213 | } break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1214 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1215 | case BR_FINISHED: |
| 1216 | result = TIMED_OUT; |
| 1217 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1218 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1219 | case BR_NOOP: |
| 1220 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1221 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1222 | case BR_SPAWN_LOOPER: |
| 1223 | mProcess->spawnPooledThread(false); |
| 1224 | break; |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1225 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1226 | default: |
liangweikang | a43ee15 | 2016-10-25 16:37:54 +0800 | [diff] [blame] | 1227 | ALOGE("*** BAD COMMAND %d received from Binder driver\n", cmd); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1228 | result = UNKNOWN_ERROR; |
| 1229 | break; |
| 1230 | } |
| 1231 | |
| 1232 | if (result != NO_ERROR) { |
| 1233 | mLastError = result; |
| 1234 | } |
Tim Murray | d429f4a | 2017-03-07 09:31:09 -0800 | [diff] [blame] | 1235 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1236 | return result; |
| 1237 | } |
| 1238 | |
Jayant Chowdhary | dac6dc8 | 2018-10-01 22:52:44 +0000 | [diff] [blame] | 1239 | bool IPCThreadState::isServingCall() const { |
| 1240 | return mIPCThreadStateBase->getCurrentBinderCallState() == IPCThreadStateBase::CallState::BINDER; |
| 1241 | } |
| 1242 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1243 | void IPCThreadState::threadDestructor(void *st) |
| 1244 | { |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 1245 | IPCThreadState* const self = static_cast<IPCThreadState*>(st); |
| 1246 | if (self) { |
| 1247 | self->flushCommands(); |
Elliott Hughes | 6071da7 | 2015-08-12 15:27:47 -0700 | [diff] [blame] | 1248 | #if defined(__ANDROID__) |
Alexandre BaiĆ£o | c60c4fc | 2019-07-31 12:29:31 -0200 | [diff] [blame^] | 1249 | if (self->mProcess->mDriverFD >= 0) { |
Johannes Carlsson | db1597a | 2011-02-17 14:06:53 +0100 | [diff] [blame] | 1250 | ioctl(self->mProcess->mDriverFD, BINDER_THREAD_EXIT, 0); |
| 1251 | } |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1252 | #endif |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 1253 | delete self; |
| 1254 | } |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1255 | } |
| 1256 | |
| 1257 | |
Colin Cross | 6f4f3ab | 2014-02-05 17:42:44 -0800 | [diff] [blame] | 1258 | void IPCThreadState::freeBuffer(Parcel* parcel, const uint8_t* data, |
| 1259 | size_t /*dataSize*/, |
| 1260 | const binder_size_t* /*objects*/, |
| 1261 | size_t /*objectsSize*/, void* /*cookie*/) |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1262 | { |
Steve Block | a19954a | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 1263 | //ALOGI("Freeing parcel %p", &parcel); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1264 | IF_LOG_COMMANDS() { |
| 1265 | alog << "Writing BC_FREE_BUFFER for " << data << endl; |
| 1266 | } |
Steve Block | 6726347 | 2012-01-09 18:35:44 +0000 | [diff] [blame] | 1267 | ALOG_ASSERT(data != NULL, "Called with NULL data"); |
Yi Kong | fdd8da9 | 2018-06-07 17:52:27 -0700 | [diff] [blame] | 1268 | if (parcel != nullptr) parcel->closeFileDescriptors(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1269 | IPCThreadState* state = self(); |
| 1270 | state->mOut.writeInt32(BC_FREE_BUFFER); |
Serban Constantinescu | f683e01 | 2013-11-05 16:53:55 +0000 | [diff] [blame] | 1271 | state->mOut.writePointer((uintptr_t)data); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1272 | } |
| 1273 | |
| 1274 | }; // namespace android |