Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007-2016 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 | #include <errno.h> |
| 18 | #include <stdatomic.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <string.h> |
| 21 | #include <sys/time.h> |
| 22 | |
| 23 | #ifdef __BIONIC__ |
| 24 | #include <android/set_abort_message.h> |
| 25 | #endif |
| 26 | |
| 27 | #include <log/event_tag_map.h> |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 28 | #include <log/log_transport.h> |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 29 | #include <private/android_filesystem_config.h> |
| 30 | #include <private/android_logger.h> |
| 31 | |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 32 | #include "config_read.h" /* __android_log_config_read_close() definition */ |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 33 | #include "config_write.h" |
| 34 | #include "log_portability.h" |
| 35 | #include "logger.h" |
| 36 | |
| 37 | #define LOG_BUF_SIZE 1024 |
| 38 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 39 | static int __write_to_log_init(log_id_t, struct iovec* vec, size_t nr); |
| 40 | static int (*write_to_log)(log_id_t, struct iovec* vec, |
| 41 | size_t nr) = __write_to_log_init; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 42 | |
| 43 | /* |
| 44 | * This is used by the C++ code to decide if it should write logs through |
| 45 | * the C code. Basically, if /dev/socket/logd is available, we're running in |
| 46 | * the simulator rather than a desktop tool and want to use the device. |
| 47 | */ |
| 48 | static enum { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 49 | kLogUninitialized, |
| 50 | kLogNotAvailable, |
| 51 | kLogAvailable |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 52 | } g_log_status = kLogUninitialized; |
| 53 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 54 | static int check_log_uid_permissions() { |
Dan Willemsen | 0910d2d | 2016-11-29 13:39:55 -0800 | [diff] [blame] | 55 | #if defined(__ANDROID__) |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 56 | uid_t uid = __android_log_uid(); |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 57 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 58 | /* Matches clientHasLogCredentials() in logd */ |
| 59 | if ((uid != AID_SYSTEM) && (uid != AID_ROOT) && (uid != AID_LOG)) { |
| 60 | uid = geteuid(); |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 61 | if ((uid != AID_SYSTEM) && (uid != AID_ROOT) && (uid != AID_LOG)) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 62 | gid_t gid = getgid(); |
| 63 | if ((gid != AID_SYSTEM) && (gid != AID_ROOT) && (gid != AID_LOG)) { |
| 64 | gid = getegid(); |
| 65 | if ((gid != AID_SYSTEM) && (gid != AID_ROOT) && (gid != AID_LOG)) { |
| 66 | int num_groups; |
| 67 | gid_t* groups; |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 68 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 69 | num_groups = getgroups(0, NULL); |
| 70 | if (num_groups <= 0) { |
| 71 | return -EPERM; |
| 72 | } |
| 73 | groups = calloc(num_groups, sizeof(gid_t)); |
| 74 | if (!groups) { |
| 75 | return -ENOMEM; |
| 76 | } |
| 77 | num_groups = getgroups(num_groups, groups); |
| 78 | while (num_groups > 0) { |
| 79 | if (groups[num_groups - 1] == AID_LOG) { |
| 80 | break; |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 81 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 82 | --num_groups; |
| 83 | } |
| 84 | free(groups); |
| 85 | if (num_groups <= 0) { |
| 86 | return -EPERM; |
| 87 | } |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 88 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 89 | } |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 90 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 91 | } |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 92 | #endif |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 93 | return 0; |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | static void __android_log_cache_available( |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 97 | struct android_log_transport_write* node) { |
| 98 | size_t i; |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 99 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 100 | if (node->logMask) { |
| 101 | return; |
| 102 | } |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 103 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 104 | for (i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) { |
| 105 | if (node->write && (i != LOG_ID_KERNEL) && |
| 106 | ((i != LOG_ID_SECURITY) || (check_log_uid_permissions() == 0)) && |
| 107 | (!node->available || ((*node->available)(i) >= 0))) { |
| 108 | node->logMask |= 1 << i; |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 109 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 110 | } |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 111 | } |
| 112 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 113 | LIBLOG_ABI_PUBLIC int __android_log_dev_available() { |
| 114 | struct android_log_transport_write* node; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 115 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 116 | if (list_empty(&__android_log_transport_write)) { |
| 117 | return kLogUninitialized; |
| 118 | } |
Mark Salyzyn | c33103c | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 119 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 120 | write_transport_for_each(node, &__android_log_transport_write) { |
| 121 | __android_log_cache_available(node); |
| 122 | if (node->logMask) { |
| 123 | return kLogAvailable; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 124 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 125 | } |
| 126 | return kLogNotAvailable; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 127 | } |
Mark Salyzyn | ba1a798 | 2016-09-13 07:28:21 -0700 | [diff] [blame] | 128 | |
Dan Willemsen | 0910d2d | 2016-11-29 13:39:55 -0800 | [diff] [blame] | 129 | #if defined(__ANDROID__) |
Mark Salyzyn | ba1a798 | 2016-09-13 07:28:21 -0700 | [diff] [blame] | 130 | static atomic_uintptr_t tagMap; |
| 131 | #endif |
| 132 | |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 133 | /* |
| 134 | * Release any logger resources. A new log write will immediately re-acquire. |
| 135 | */ |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 136 | LIBLOG_ABI_PUBLIC void __android_log_close() { |
| 137 | struct android_log_transport_write* transport; |
Dan Willemsen | 0910d2d | 2016-11-29 13:39:55 -0800 | [diff] [blame] | 138 | #if defined(__ANDROID__) |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 139 | EventTagMap* m; |
Mark Salyzyn | ba1a798 | 2016-09-13 07:28:21 -0700 | [diff] [blame] | 140 | #endif |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 141 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 142 | __android_log_lock(); |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 143 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 144 | write_to_log = __write_to_log_init; |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 145 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 146 | /* |
| 147 | * Threads that are actively writing at this point are not held back |
| 148 | * by a lock and are at risk of dropping the messages with a return code |
| 149 | * -EBADF. Prefer to return error code than add the overhead of a lock to |
| 150 | * each log writing call to guarantee delivery. In addition, anyone |
| 151 | * calling this is doing so to release the logging resources and shut down, |
| 152 | * for them to do so with outstanding log requests in other threads is a |
| 153 | * disengenuous use of this function. |
| 154 | */ |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 155 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 156 | write_transport_for_each(transport, &__android_log_persist_write) { |
| 157 | if (transport->close) { |
| 158 | (*transport->close)(); |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 159 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 160 | } |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 161 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 162 | write_transport_for_each(transport, &__android_log_transport_write) { |
| 163 | if (transport->close) { |
| 164 | (*transport->close)(); |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 165 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 166 | } |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 167 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 168 | __android_log_config_write_close(); |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 169 | |
Dan Willemsen | 0910d2d | 2016-11-29 13:39:55 -0800 | [diff] [blame] | 170 | #if defined(__ANDROID__) |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 171 | /* |
| 172 | * Additional risk here somewhat mitigated by immediately unlock flushing |
| 173 | * the processor cache. The multi-threaded race that we choose to accept, |
| 174 | * to minimize locking, is an atomic_load in a writer picking up a value |
| 175 | * just prior to entering this routine. There will be an use after free. |
| 176 | * |
| 177 | * Again, anyone calling this is doing so to release the logging resources |
| 178 | * is most probably going to quiesce then shut down; or to restart after |
| 179 | * a fork so the risk should be non-existent. For this reason we |
| 180 | * choose a mitigation stance for efficiency instead of incuring the cost |
| 181 | * of a lock for every log write. |
| 182 | */ |
| 183 | m = (EventTagMap*)atomic_exchange(&tagMap, (uintptr_t)0); |
Mark Salyzyn | ba1a798 | 2016-09-13 07:28:21 -0700 | [diff] [blame] | 184 | #endif |
| 185 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 186 | __android_log_unlock(); |
Mark Salyzyn | ba1a798 | 2016-09-13 07:28:21 -0700 | [diff] [blame] | 187 | |
Dan Willemsen | 0910d2d | 2016-11-29 13:39:55 -0800 | [diff] [blame] | 188 | #if defined(__ANDROID__) |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 189 | if (m != (EventTagMap*)(uintptr_t)-1LL) android_closeEventTagMap(m); |
Mark Salyzyn | ba1a798 | 2016-09-13 07:28:21 -0700 | [diff] [blame] | 190 | #endif |
Mark Salyzyn | df7a4c6 | 2016-08-23 10:23:36 -0700 | [diff] [blame] | 191 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 192 | |
| 193 | /* log_init_lock assumed */ |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 194 | static int __write_to_log_initialize() { |
| 195 | struct android_log_transport_write* transport; |
| 196 | struct listnode* n; |
| 197 | int i = 0, ret = 0; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 198 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 199 | __android_log_config_write(); |
| 200 | write_transport_for_each_safe(transport, n, &__android_log_transport_write) { |
| 201 | __android_log_cache_available(transport); |
| 202 | if (!transport->logMask) { |
| 203 | list_remove(&transport->node); |
| 204 | continue; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 205 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 206 | if (!transport->open || ((*transport->open)() < 0)) { |
| 207 | if (transport->close) { |
| 208 | (*transport->close)(); |
| 209 | } |
| 210 | list_remove(&transport->node); |
| 211 | continue; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 212 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 213 | ++ret; |
| 214 | } |
| 215 | write_transport_for_each_safe(transport, n, &__android_log_persist_write) { |
| 216 | __android_log_cache_available(transport); |
| 217 | if (!transport->logMask) { |
| 218 | list_remove(&transport->node); |
| 219 | continue; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 220 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 221 | if (!transport->open || ((*transport->open)() < 0)) { |
| 222 | if (transport->close) { |
| 223 | (*transport->close)(); |
| 224 | } |
| 225 | list_remove(&transport->node); |
| 226 | continue; |
| 227 | } |
| 228 | ++i; |
| 229 | } |
| 230 | if (!ret && !i) { |
| 231 | return -ENODEV; |
| 232 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 233 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 234 | return ret; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Extract a 4-byte value from a byte stream. le32toh open coded |
| 239 | */ |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 240 | static inline uint32_t get4LE(const uint8_t* src) { |
| 241 | return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 242 | } |
| 243 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 244 | static int __write_to_log_daemon(log_id_t log_id, struct iovec* vec, size_t nr) { |
| 245 | struct android_log_transport_write* node; |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 246 | int ret, save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 247 | struct timespec ts; |
| 248 | size_t len, i; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 249 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 250 | for (len = i = 0; i < nr; ++i) { |
| 251 | len += vec[i].iov_len; |
| 252 | } |
| 253 | if (!len) { |
| 254 | return -EINVAL; |
| 255 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 256 | |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 257 | save_errno = errno; |
Dan Willemsen | 0910d2d | 2016-11-29 13:39:55 -0800 | [diff] [blame] | 258 | #if defined(__ANDROID__) |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 259 | clock_gettime(android_log_clockid(), &ts); |
Mark Salyzyn | 142b43d | 2016-12-28 10:30:57 -0800 | [diff] [blame] | 260 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 261 | if (log_id == LOG_ID_SECURITY) { |
| 262 | if (vec[0].iov_len < 4) { |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 263 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 264 | return -EINVAL; |
| 265 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 266 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 267 | ret = check_log_uid_permissions(); |
| 268 | if (ret < 0) { |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 269 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 270 | return ret; |
| 271 | } |
| 272 | if (!__android_log_security()) { |
| 273 | /* If only we could reset downstream logd counter */ |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 274 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 275 | return -EPERM; |
| 276 | } |
Yao Chen | 025f05a | 2017-12-01 15:48:19 -0800 | [diff] [blame] | 277 | } else if (log_id == LOG_ID_EVENTS || log_id == LOG_ID_STATS) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 278 | const char* tag; |
| 279 | size_t len; |
| 280 | EventTagMap *m, *f; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 281 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 282 | if (vec[0].iov_len < 4) { |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 283 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 284 | return -EINVAL; |
| 285 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 286 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 287 | tag = NULL; |
| 288 | len = 0; |
| 289 | f = NULL; |
| 290 | m = (EventTagMap*)atomic_load(&tagMap); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 291 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 292 | if (!m) { |
| 293 | ret = __android_log_trylock(); |
| 294 | m = (EventTagMap*)atomic_load(&tagMap); /* trylock flush cache */ |
| 295 | if (!m) { |
| 296 | m = android_openEventTagMap(NULL); |
| 297 | if (ret) { /* trylock failed, use local copy, mark for close */ |
| 298 | f = m; |
| 299 | } else { |
| 300 | if (!m) { /* One chance to open map file */ |
| 301 | m = (EventTagMap*)(uintptr_t)-1LL; |
| 302 | } |
| 303 | atomic_store(&tagMap, (uintptr_t)m); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 304 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 305 | } |
| 306 | if (!ret) { /* trylock succeeded, unlock */ |
| 307 | __android_log_unlock(); |
| 308 | } |
| 309 | } |
| 310 | if (m && (m != (EventTagMap*)(uintptr_t)-1LL)) { |
| 311 | tag = android_lookupEventTag_len(m, &len, get4LE(vec[0].iov_base)); |
| 312 | } |
| 313 | ret = __android_log_is_loggable_len(ANDROID_LOG_INFO, tag, len, |
| 314 | ANDROID_LOG_VERBOSE); |
| 315 | if (f) { /* local copy marked for close */ |
| 316 | android_closeEventTagMap(f); |
| 317 | } |
| 318 | if (!ret) { |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 319 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 320 | return -EPERM; |
| 321 | } |
| 322 | } else { |
| 323 | /* Validate the incoming tag, tag content can not split across iovec */ |
| 324 | char prio = ANDROID_LOG_VERBOSE; |
| 325 | const char* tag = vec[0].iov_base; |
| 326 | size_t len = vec[0].iov_len; |
| 327 | if (!tag) { |
| 328 | len = 0; |
| 329 | } |
| 330 | if (len > 0) { |
| 331 | prio = *tag; |
| 332 | if (len > 1) { |
| 333 | --len; |
| 334 | ++tag; |
| 335 | } else { |
| 336 | len = vec[1].iov_len; |
| 337 | tag = ((const char*)vec[1].iov_base); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 338 | if (!tag) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 339 | len = 0; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 340 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 341 | } |
| 342 | } |
| 343 | /* tag must be nul terminated */ |
| 344 | if (tag && strnlen(tag, len) >= len) { |
| 345 | tag = NULL; |
| 346 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 347 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 348 | if (!__android_log_is_loggable_len(prio, tag, len - 1, ANDROID_LOG_VERBOSE)) { |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 349 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 350 | return -EPERM; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 351 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 352 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 353 | #else |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 354 | /* simulate clock_gettime(CLOCK_REALTIME, &ts); */ |
| 355 | { |
| 356 | struct timeval tv; |
| 357 | gettimeofday(&tv, NULL); |
| 358 | ts.tv_sec = tv.tv_sec; |
| 359 | ts.tv_nsec = tv.tv_usec * 1000; |
| 360 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 361 | #endif |
| 362 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 363 | ret = 0; |
| 364 | i = 1 << log_id; |
| 365 | write_transport_for_each(node, &__android_log_transport_write) { |
| 366 | if (node->logMask & i) { |
| 367 | ssize_t retval; |
| 368 | retval = (*node->write)(log_id, &ts, vec, nr); |
| 369 | if (ret >= 0) { |
| 370 | ret = retval; |
| 371 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 372 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 373 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 374 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 375 | write_transport_for_each(node, &__android_log_persist_write) { |
| 376 | if (node->logMask & i) { |
| 377 | (void)(*node->write)(log_id, &ts, vec, nr); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 378 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 379 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 380 | |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 381 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 382 | return ret; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 383 | } |
| 384 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 385 | static int __write_to_log_init(log_id_t log_id, struct iovec* vec, size_t nr) { |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 386 | int ret, save_errno = errno; |
| 387 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 388 | __android_log_lock(); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 389 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 390 | if (write_to_log == __write_to_log_init) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 391 | ret = __write_to_log_initialize(); |
| 392 | if (ret < 0) { |
| 393 | __android_log_unlock(); |
| 394 | if (!list_empty(&__android_log_persist_write)) { |
| 395 | __write_to_log_daemon(log_id, vec, nr); |
| 396 | } |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 397 | errno = save_errno; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 398 | return ret; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 399 | } |
| 400 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 401 | write_to_log = __write_to_log_daemon; |
| 402 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 403 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 404 | __android_log_unlock(); |
| 405 | |
Mark Salyzyn | df7a622 | 2018-03-07 10:42:06 -0800 | [diff] [blame] | 406 | ret = write_to_log(log_id, vec, nr); |
| 407 | errno = save_errno; |
| 408 | return ret; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 409 | } |
| 410 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 411 | LIBLOG_ABI_PUBLIC int __android_log_write(int prio, const char* tag, |
| 412 | const char* msg) { |
| 413 | return __android_log_buf_write(LOG_ID_MAIN, prio, tag, msg); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | LIBLOG_ABI_PUBLIC int __android_log_buf_write(int bufID, int prio, |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 417 | const char* tag, const char* msg) { |
| 418 | struct iovec vec[3]; |
| 419 | char tmp_tag[32]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 420 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 421 | if (!tag) tag = ""; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 422 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 423 | /* XXX: This needs to go! */ |
Mark Salyzyn | 525b34d | 2017-03-28 09:49:53 -0700 | [diff] [blame] | 424 | if (bufID != LOG_ID_RADIO) { |
| 425 | switch (tag[0]) { |
| 426 | case 'H': |
| 427 | if (strcmp(tag + 1, "HTC_RIL" + 1)) break; |
| 428 | goto inform; |
| 429 | case 'R': |
| 430 | /* Any log tag with "RIL" as the prefix */ |
| 431 | if (strncmp(tag + 1, "RIL" + 1, strlen("RIL") - 1)) break; |
| 432 | goto inform; |
| 433 | case 'Q': |
| 434 | /* Any log tag with "QC_RIL" as the prefix */ |
| 435 | if (strncmp(tag + 1, "QC_RIL" + 1, strlen("QC_RIL") - 1)) break; |
| 436 | goto inform; |
| 437 | case 'I': |
| 438 | /* Any log tag with "IMS" as the prefix */ |
| 439 | if (strncmp(tag + 1, "IMS" + 1, strlen("IMS") - 1)) break; |
| 440 | goto inform; |
| 441 | case 'A': |
| 442 | if (strcmp(tag + 1, "AT" + 1)) break; |
| 443 | goto inform; |
| 444 | case 'G': |
| 445 | if (strcmp(tag + 1, "GSM" + 1)) break; |
| 446 | goto inform; |
| 447 | case 'S': |
| 448 | if (strcmp(tag + 1, "STK" + 1) && strcmp(tag + 1, "SMS" + 1)) break; |
| 449 | goto inform; |
| 450 | case 'C': |
| 451 | if (strcmp(tag + 1, "CDMA" + 1)) break; |
| 452 | goto inform; |
| 453 | case 'P': |
| 454 | if (strcmp(tag + 1, "PHONE" + 1)) break; |
| 455 | /* FALLTHRU */ |
| 456 | inform: |
| 457 | bufID = LOG_ID_RADIO; |
| 458 | snprintf(tmp_tag, sizeof(tmp_tag), "use-Rlog/RLOG-%s", tag); |
| 459 | tag = tmp_tag; |
| 460 | /* FALLTHRU */ |
| 461 | default: |
| 462 | break; |
| 463 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 464 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 465 | |
| 466 | #if __BIONIC__ |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 467 | if (prio == ANDROID_LOG_FATAL) { |
| 468 | android_set_abort_message(msg); |
| 469 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 470 | #endif |
| 471 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 472 | vec[0].iov_base = (unsigned char*)&prio; |
| 473 | vec[0].iov_len = 1; |
| 474 | vec[1].iov_base = (void*)tag; |
| 475 | vec[1].iov_len = strlen(tag) + 1; |
| 476 | vec[2].iov_base = (void*)msg; |
| 477 | vec[2].iov_len = strlen(msg) + 1; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 478 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 479 | return write_to_log(bufID, vec, 3); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 480 | } |
| 481 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 482 | LIBLOG_ABI_PUBLIC int __android_log_vprint(int prio, const char* tag, |
| 483 | const char* fmt, va_list ap) { |
| 484 | char buf[LOG_BUF_SIZE]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 485 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 486 | vsnprintf(buf, LOG_BUF_SIZE, fmt, ap); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 487 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 488 | return __android_log_write(prio, tag, buf); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 489 | } |
| 490 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 491 | LIBLOG_ABI_PUBLIC int __android_log_print(int prio, const char* tag, |
| 492 | const char* fmt, ...) { |
| 493 | va_list ap; |
| 494 | char buf[LOG_BUF_SIZE]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 495 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 496 | va_start(ap, fmt); |
| 497 | vsnprintf(buf, LOG_BUF_SIZE, fmt, ap); |
| 498 | va_end(ap); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 499 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 500 | return __android_log_write(prio, tag, buf); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | LIBLOG_ABI_PUBLIC int __android_log_buf_print(int bufID, int prio, |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 504 | const char* tag, const char* fmt, |
| 505 | ...) { |
| 506 | va_list ap; |
| 507 | char buf[LOG_BUF_SIZE]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 508 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 509 | va_start(ap, fmt); |
| 510 | vsnprintf(buf, LOG_BUF_SIZE, fmt, ap); |
| 511 | va_end(ap); |
| 512 | |
| 513 | return __android_log_buf_write(bufID, prio, tag, buf); |
| 514 | } |
| 515 | |
| 516 | LIBLOG_ABI_PUBLIC void __android_log_assert(const char* cond, const char* tag, |
| 517 | const char* fmt, ...) { |
| 518 | char buf[LOG_BUF_SIZE]; |
| 519 | |
| 520 | if (fmt) { |
| 521 | va_list ap; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 522 | va_start(ap, fmt); |
| 523 | vsnprintf(buf, LOG_BUF_SIZE, fmt, ap); |
| 524 | va_end(ap); |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 525 | } else { |
| 526 | /* Msg not provided, log condition. N.B. Do not use cond directly as |
| 527 | * format string as it could contain spurious '%' syntax (e.g. |
| 528 | * "%d" in "blocks%devs == 0"). |
| 529 | */ |
| 530 | if (cond) |
| 531 | snprintf(buf, LOG_BUF_SIZE, "Assertion failed: %s", cond); |
| 532 | else |
| 533 | strcpy(buf, "Unspecified assertion failed"); |
| 534 | } |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 535 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 536 | // Log assertion failures to stderr for the benefit of "adb shell" users |
| 537 | // and gtests (http://b/23675822). |
| 538 | struct iovec iov[2] = { |
| 539 | { buf, strlen(buf) }, { (char*)"\n", 1 }, |
| 540 | }; |
| 541 | TEMP_FAILURE_RETRY(writev(2, iov, 2)); |
| 542 | |
| 543 | __android_log_write(ANDROID_LOG_FATAL, tag, buf); |
| 544 | abort(); /* abort so we have a chance to debug the situation */ |
| 545 | /* NOTREACHED */ |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 546 | } |
| 547 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 548 | LIBLOG_ABI_PUBLIC int __android_log_bwrite(int32_t tag, const void* payload, |
| 549 | size_t len) { |
| 550 | struct iovec vec[2]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 551 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 552 | vec[0].iov_base = &tag; |
| 553 | vec[0].iov_len = sizeof(tag); |
| 554 | vec[1].iov_base = (void*)payload; |
| 555 | vec[1].iov_len = len; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 556 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 557 | return write_to_log(LOG_ID_EVENTS, vec, 2); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 558 | } |
| 559 | |
Stefan Lafon | 701a065 | 2017-08-24 20:14:06 -0700 | [diff] [blame] | 560 | LIBLOG_ABI_PUBLIC int __android_log_stats_bwrite(int32_t tag, |
| 561 | const void* payload, |
| 562 | size_t len) { |
| 563 | struct iovec vec[2]; |
| 564 | |
| 565 | vec[0].iov_base = &tag; |
| 566 | vec[0].iov_len = sizeof(tag); |
| 567 | vec[1].iov_base = (void*)payload; |
| 568 | vec[1].iov_len = len; |
| 569 | |
| 570 | return write_to_log(LOG_ID_STATS, vec, 2); |
| 571 | } |
| 572 | |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 573 | LIBLOG_ABI_PUBLIC int __android_log_security_bwrite(int32_t tag, |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 574 | const void* payload, |
| 575 | size_t len) { |
| 576 | struct iovec vec[2]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 577 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 578 | vec[0].iov_base = &tag; |
| 579 | vec[0].iov_len = sizeof(tag); |
| 580 | vec[1].iov_base = (void*)payload; |
| 581 | vec[1].iov_len = len; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 582 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 583 | return write_to_log(LOG_ID_SECURITY, vec, 2); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | /* |
| 587 | * Like __android_log_bwrite, but takes the type as well. Doesn't work |
| 588 | * for the general case where we're generating lists of stuff, but very |
| 589 | * handy if we just want to dump an integer into the log. |
| 590 | */ |
| 591 | LIBLOG_ABI_PUBLIC int __android_log_btwrite(int32_t tag, char type, |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 592 | const void* payload, size_t len) { |
| 593 | struct iovec vec[3]; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 594 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 595 | vec[0].iov_base = &tag; |
| 596 | vec[0].iov_len = sizeof(tag); |
| 597 | vec[1].iov_base = &type; |
| 598 | vec[1].iov_len = sizeof(type); |
| 599 | vec[2].iov_base = (void*)payload; |
| 600 | vec[2].iov_len = len; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 601 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 602 | return write_to_log(LOG_ID_EVENTS, vec, 3); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 603 | } |
| 604 | |
| 605 | /* |
| 606 | * Like __android_log_bwrite, but used for writing strings to the |
| 607 | * event log. |
| 608 | */ |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 609 | LIBLOG_ABI_PUBLIC int __android_log_bswrite(int32_t tag, const char* payload) { |
| 610 | struct iovec vec[4]; |
| 611 | char type = EVENT_TYPE_STRING; |
| 612 | uint32_t len = strlen(payload); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 613 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 614 | vec[0].iov_base = &tag; |
| 615 | vec[0].iov_len = sizeof(tag); |
| 616 | vec[1].iov_base = &type; |
| 617 | vec[1].iov_len = sizeof(type); |
| 618 | vec[2].iov_base = &len; |
| 619 | vec[2].iov_len = sizeof(len); |
| 620 | vec[3].iov_base = (void*)payload; |
| 621 | vec[3].iov_len = len; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 622 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 623 | return write_to_log(LOG_ID_EVENTS, vec, 4); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | /* |
| 627 | * Like __android_log_security_bwrite, but used for writing strings to the |
| 628 | * security log. |
| 629 | */ |
| 630 | LIBLOG_ABI_PUBLIC int __android_log_security_bswrite(int32_t tag, |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 631 | const char* payload) { |
| 632 | struct iovec vec[4]; |
| 633 | char type = EVENT_TYPE_STRING; |
| 634 | uint32_t len = strlen(payload); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 635 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 636 | vec[0].iov_base = &tag; |
| 637 | vec[0].iov_len = sizeof(tag); |
| 638 | vec[1].iov_base = &type; |
| 639 | vec[1].iov_len = sizeof(type); |
| 640 | vec[2].iov_base = &len; |
| 641 | vec[2].iov_len = sizeof(len); |
| 642 | vec[3].iov_base = (void*)payload; |
| 643 | vec[3].iov_len = len; |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 644 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 645 | return write_to_log(LOG_ID_SECURITY, vec, 4); |
Mark Salyzyn | 018a96d | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 646 | } |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 647 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 648 | static int __write_to_log_null(log_id_t log_id, struct iovec* vec, size_t nr) { |
| 649 | size_t len, i; |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 650 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 651 | if ((log_id < LOG_ID_MIN) || (log_id >= LOG_ID_MAX)) { |
| 652 | return -EINVAL; |
| 653 | } |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 654 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 655 | for (len = i = 0; i < nr; ++i) { |
| 656 | len += vec[i].iov_len; |
| 657 | } |
| 658 | if (!len) { |
| 659 | return -EINVAL; |
| 660 | } |
| 661 | return len; |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 662 | } |
| 663 | |
| 664 | /* Following functions need access to our internal write_to_log status */ |
| 665 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 666 | LIBLOG_HIDDEN int __android_log_transport; |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 667 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 668 | LIBLOG_ABI_PUBLIC int android_set_log_transport(int transport_flag) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 669 | int retval; |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 670 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 671 | if (transport_flag < 0) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 672 | return -EINVAL; |
| 673 | } |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 674 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 675 | retval = LOGGER_NULL; |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 676 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 677 | __android_log_lock(); |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 678 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 679 | if (transport_flag & LOGGER_NULL) { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 680 | write_to_log = __write_to_log_null; |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 681 | |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 682 | __android_log_unlock(); |
| 683 | |
Mark Salyzyn | 7100288 | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 684 | return retval; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 685 | } |
| 686 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 687 | __android_log_transport &= LOGGER_LOCAL | LOGGER_LOGD | LOGGER_STDERR; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 688 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 689 | transport_flag &= LOGGER_LOCAL | LOGGER_LOGD | LOGGER_STDERR; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 690 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 691 | if (__android_log_transport != transport_flag) { |
| 692 | __android_log_transport = transport_flag; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 693 | __android_log_config_write_close(); |
| 694 | __android_log_config_read_close(); |
| 695 | |
| 696 | write_to_log = __write_to_log_init; |
| 697 | /* generically we only expect these two values for write_to_log */ |
| 698 | } else if ((write_to_log != __write_to_log_init) && |
| 699 | (write_to_log != __write_to_log_daemon)) { |
| 700 | write_to_log = __write_to_log_init; |
| 701 | } |
| 702 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 703 | retval = __android_log_transport; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 704 | |
| 705 | __android_log_unlock(); |
| 706 | |
| 707 | return retval; |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 708 | } |
| 709 | |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 710 | LIBLOG_ABI_PUBLIC int android_get_log_transport() { |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 711 | int ret = LOGGER_DEFAULT; |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 712 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 713 | __android_log_lock(); |
| 714 | if (write_to_log == __write_to_log_null) { |
| 715 | ret = LOGGER_NULL; |
| 716 | } else { |
Mark Salyzyn | 81321a7 | 2017-03-09 07:28:29 -0800 | [diff] [blame] | 717 | __android_log_transport &= LOGGER_LOCAL | LOGGER_LOGD | LOGGER_STDERR; |
| 718 | ret = __android_log_transport; |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 719 | if ((write_to_log != __write_to_log_init) && |
| 720 | (write_to_log != __write_to_log_daemon)) { |
| 721 | ret = -EINVAL; |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 722 | } |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 723 | } |
| 724 | __android_log_unlock(); |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 725 | |
Mark Salyzyn | 2ed51d7 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 726 | return ret; |
Mark Salyzyn | 850d06e | 2015-02-04 12:39:57 -0800 | [diff] [blame] | 727 | } |