Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright 2013-2014, 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 | |
Tom Cherry | f623f02 | 2019-01-10 10:37:36 -0800 | [diff] [blame] | 17 | #include "log/log_read.h" |
| 18 | |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 19 | #include <errno.h> |
| 20 | #include <fcntl.h> |
| 21 | #include <pthread.h> |
| 22 | #include <sched.h> |
| 23 | #include <stddef.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <unistd.h> |
| 27 | |
Mark Salyzyn | 5a79c7d | 2016-09-28 13:26:55 -0700 | [diff] [blame] | 28 | #include <android/log.h> |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 29 | #include <cutils/list.h> |
Mark Salyzyn | b3db3cf | 2016-03-28 16:20:29 -0700 | [diff] [blame] | 30 | #include <private/android_filesystem_config.h> |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 31 | |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 32 | #include "log_portability.h" |
| 33 | #include "logger.h" |
| 34 | |
| 35 | /* android_logger_alloc unimplemented, no use case */ |
| 36 | /* android_logger_free not exported */ |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 37 | static void android_logger_free(struct logger* logger) { |
Tom Cherry | f623f02 | 2019-01-10 10:37:36 -0800 | [diff] [blame] | 38 | struct android_log_logger* logger_internal = (struct android_log_logger*)logger; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 39 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 40 | if (!logger_internal) { |
| 41 | return; |
| 42 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 43 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 44 | list_remove(&logger_internal->node); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 45 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 46 | free(logger_internal); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | /* android_logger_alloc unimplemented, no use case */ |
| 50 | |
| 51 | /* method for getting the associated sublog id */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 52 | log_id_t android_logger_get_id(struct logger* logger) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 53 | return ((struct android_log_logger*)logger)->logId; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 54 | } |
| 55 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 56 | static int init_transport_context(struct android_log_logger_list* logger_list) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 57 | if (!logger_list) { |
| 58 | return -EINVAL; |
| 59 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 60 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 61 | if (list_empty(&logger_list->logger)) { |
| 62 | return -EINVAL; |
| 63 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 64 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 65 | if (logger_list->transport_initialized) { |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 66 | return 0; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 67 | } |
| 68 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 69 | #if (FAKE_LOG_DEVICE == 0) |
| 70 | extern struct android_log_transport_read logdLoggerRead; |
| 71 | extern struct android_log_transport_read pmsgLoggerRead; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 72 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 73 | struct android_log_transport_read* transport; |
| 74 | transport = (logger_list->mode & ANDROID_LOG_PSTORE) ? &pmsgLoggerRead : &logdLoggerRead; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 75 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 76 | struct android_log_logger* logger; |
| 77 | unsigned logMask = 0; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 78 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 79 | logger_for_each(logger, logger_list) { |
| 80 | log_id_t logId = logger->logId; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 81 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 82 | if (logId == LOG_ID_SECURITY && __android_log_uid() != AID_SYSTEM) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 83 | continue; |
| 84 | } |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 85 | if (transport->read && (!transport->available || transport->available(logId) >= 0)) { |
| 86 | logMask |= 1 << logId; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 87 | } |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 88 | } |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 89 | if (!logMask) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 90 | return -ENODEV; |
| 91 | } |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 92 | |
| 93 | logger_list->transport_context.transport = transport; |
| 94 | logger_list->transport_context.logMask = logMask; |
| 95 | logger_list->transport_context.ret = 1; |
| 96 | #endif |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 97 | return 0; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 98 | } |
| 99 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 100 | #define LOGGER_FUNCTION(logger, def, func, args...) \ |
| 101 | ssize_t ret = -EINVAL; \ |
| 102 | android_log_logger* logger_internal = reinterpret_cast<android_log_logger*>(logger); \ |
| 103 | \ |
| 104 | if (!logger_internal) { \ |
| 105 | return ret; \ |
| 106 | } \ |
| 107 | ret = init_transport_context(logger_internal->parent); \ |
| 108 | if (ret < 0) { \ |
| 109 | return ret; \ |
| 110 | } \ |
| 111 | \ |
| 112 | ret = (def); \ |
| 113 | android_log_transport_context* transport_context = &logger_internal->parent->transport_context; \ |
| 114 | if (transport_context->logMask & (1 << logger_internal->logId) && \ |
| 115 | transport_context->transport && transport_context->transport->func) { \ |
| 116 | ssize_t retval = \ |
| 117 | (transport_context->transport->func)(logger_internal, transport_context, ##args); \ |
| 118 | if (ret >= 0 || ret == (def)) { \ |
| 119 | ret = retval; \ |
| 120 | } \ |
| 121 | } \ |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 122 | return ret |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 123 | |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 124 | int android_logger_clear(struct logger* logger) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 125 | LOGGER_FUNCTION(logger, -ENODEV, clear); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | /* returns the total size of the log's ring buffer */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 129 | long android_logger_get_log_size(struct logger* logger) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 130 | LOGGER_FUNCTION(logger, -ENODEV, getSize); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 131 | } |
| 132 | |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 133 | int android_logger_set_log_size(struct logger* logger, unsigned long size) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 134 | LOGGER_FUNCTION(logger, -ENODEV, setSize, size); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | /* |
| 138 | * returns the readable size of the log's ring buffer (that is, amount of the |
| 139 | * log consumed) |
| 140 | */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 141 | long android_logger_get_log_readable_size(struct logger* logger) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 142 | LOGGER_FUNCTION(logger, -ENODEV, getReadableSize); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | /* |
| 146 | * returns the logger version |
| 147 | */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 148 | int android_logger_get_log_version(struct logger* logger) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 149 | LOGGER_FUNCTION(logger, 4, version); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 150 | } |
| 151 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 152 | #define LOGGER_LIST_FUNCTION(logger_list, def, func, args...) \ |
| 153 | android_log_logger_list* logger_list_internal = \ |
| 154 | reinterpret_cast<android_log_logger_list*>(logger_list); \ |
| 155 | \ |
| 156 | ssize_t ret = init_transport_context(logger_list_internal); \ |
| 157 | if (ret < 0) { \ |
| 158 | return ret; \ |
| 159 | } \ |
| 160 | \ |
| 161 | ret = (def); \ |
| 162 | android_log_transport_context* transport_context = &logger_list_internal->transport_context; \ |
| 163 | if (transport_context->transport && transport_context->transport->func) { \ |
| 164 | ssize_t retval = \ |
| 165 | (transport_context->transport->func)(logger_list_internal, transport_context, ##args); \ |
| 166 | if (ret >= 0 || ret == (def)) { \ |
| 167 | ret = retval; \ |
| 168 | } \ |
| 169 | } \ |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 170 | return ret |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 171 | |
| 172 | /* |
| 173 | * returns statistics |
| 174 | */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 175 | ssize_t android_logger_get_statistics(struct logger_list* logger_list, char* buf, size_t len) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 176 | LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getStats, buf, len); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 177 | } |
| 178 | |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 179 | ssize_t android_logger_get_prune_list(struct logger_list* logger_list, char* buf, size_t len) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 180 | LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getPrune, buf, len); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 181 | } |
| 182 | |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 183 | int android_logger_set_prune_list(struct logger_list* logger_list, char* buf, size_t len) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 184 | LOGGER_LIST_FUNCTION(logger_list, -ENODEV, setPrune, buf, len); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 185 | } |
| 186 | |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 187 | struct logger_list* android_logger_list_alloc(int mode, unsigned int tail, pid_t pid) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 188 | struct android_log_logger_list* logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 189 | |
Tom Cherry | f623f02 | 2019-01-10 10:37:36 -0800 | [diff] [blame] | 190 | logger_list = static_cast<android_log_logger_list*>(calloc(1, sizeof(*logger_list))); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 191 | if (!logger_list) { |
| 192 | return NULL; |
| 193 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 194 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 195 | list_init(&logger_list->logger); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 196 | logger_list->mode = mode; |
| 197 | logger_list->tail = tail; |
| 198 | logger_list->pid = pid; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 199 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 200 | return (struct logger_list*)logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 201 | } |
| 202 | |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 203 | struct logger_list* android_logger_list_alloc_time(int mode, log_time start, pid_t pid) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 204 | struct android_log_logger_list* logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 205 | |
Tom Cherry | f623f02 | 2019-01-10 10:37:36 -0800 | [diff] [blame] | 206 | logger_list = static_cast<android_log_logger_list*>(calloc(1, sizeof(*logger_list))); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 207 | if (!logger_list) { |
| 208 | return NULL; |
| 209 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 210 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 211 | list_init(&logger_list->logger); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 212 | logger_list->mode = mode; |
| 213 | logger_list->start = start; |
| 214 | logger_list->pid = pid; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 215 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 216 | return (struct logger_list*)logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | /* android_logger_list_register unimplemented, no use case */ |
| 220 | /* android_logger_list_unregister unimplemented, no use case */ |
| 221 | |
| 222 | /* Open the named log and add it to the logger list */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 223 | struct logger* android_logger_open(struct logger_list* logger_list, log_id_t logId) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 224 | struct android_log_logger_list* logger_list_internal = |
| 225 | (struct android_log_logger_list*)logger_list; |
| 226 | struct android_log_logger* logger; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 227 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 228 | if (!logger_list_internal || (logId >= LOG_ID_MAX)) { |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 229 | return nullptr; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | logger_for_each(logger, logger_list_internal) { |
| 233 | if (logger->logId == logId) { |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 234 | return reinterpret_cast<struct logger*>(logger); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 235 | } |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 236 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 237 | |
Tom Cherry | f623f02 | 2019-01-10 10:37:36 -0800 | [diff] [blame] | 238 | logger = static_cast<android_log_logger*>(calloc(1, sizeof(*logger))); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 239 | if (!logger) { |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 240 | return nullptr; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 241 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 242 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 243 | logger->logId = logId; |
| 244 | list_add_tail(&logger_list_internal->logger, &logger->node); |
| 245 | logger->parent = logger_list_internal; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 246 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 247 | // Reset known transport to re-evaluate, since we added a new logger. |
| 248 | logger_list_internal->transport_initialized = false; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 249 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 250 | return (struct logger*)logger; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | /* Open the single named log and make it part of a new logger list */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 254 | struct logger_list* android_logger_list_open(log_id_t logId, int mode, unsigned int tail, |
| 255 | pid_t pid) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 256 | struct logger_list* logger_list = android_logger_list_alloc(mode, tail, pid); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 257 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 258 | if (!logger_list) { |
| 259 | return NULL; |
| 260 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 261 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 262 | if (!android_logger_open(logger_list, logId)) { |
| 263 | android_logger_list_free(logger_list); |
| 264 | return NULL; |
| 265 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 266 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 267 | return logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 268 | } |
| 269 | |
Mark Salyzyn | baff8aa | 2016-05-13 12:25:55 -0700 | [diff] [blame] | 270 | /* Validate log_msg packet, read function has already been null checked */ |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 271 | static int android_transport_read(struct android_log_logger_list* logger_list, |
| 272 | struct android_log_transport_context* transp, |
| 273 | struct log_msg* log_msg) { |
| 274 | int ret = (*transp->transport->read)(logger_list, transp, log_msg); |
Mark Salyzyn | baff8aa | 2016-05-13 12:25:55 -0700 | [diff] [blame] | 275 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 276 | if (ret > (int)sizeof(*log_msg)) { |
| 277 | ret = sizeof(*log_msg); |
| 278 | } |
| 279 | |
| 280 | transp->ret = ret; |
| 281 | |
| 282 | /* propagate errors, or make sure len & hdr_size members visible */ |
| 283 | if (ret < (int)(sizeof(log_msg->entry.len) + sizeof(log_msg->entry.hdr_size))) { |
| 284 | if (ret >= (int)sizeof(log_msg->entry.len)) { |
| 285 | log_msg->entry.len = 0; |
Mark Salyzyn | baff8aa | 2016-05-13 12:25:55 -0700 | [diff] [blame] | 286 | } |
Mark Salyzyn | baff8aa | 2016-05-13 12:25:55 -0700 | [diff] [blame] | 287 | return ret; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | /* hdr_size correction (logger_entry -> logger_entry_v2+ conversion) */ |
| 291 | if (log_msg->entry_v2.hdr_size == 0) { |
| 292 | log_msg->entry_v2.hdr_size = sizeof(struct logger_entry); |
| 293 | } |
| 294 | if ((log_msg->entry_v2.hdr_size < sizeof(log_msg->entry_v1)) || |
| 295 | (log_msg->entry_v2.hdr_size > sizeof(log_msg->entry))) { |
| 296 | return -EINVAL; |
| 297 | } |
| 298 | |
| 299 | /* len validation */ |
| 300 | if (ret <= log_msg->entry_v2.hdr_size) { |
| 301 | log_msg->entry.len = 0; |
| 302 | } else { |
| 303 | log_msg->entry.len = ret - log_msg->entry_v2.hdr_size; |
| 304 | } |
| 305 | |
| 306 | return ret; |
Mark Salyzyn | baff8aa | 2016-05-13 12:25:55 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 309 | /* Read from the selected logs */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 310 | int android_logger_list_read(struct logger_list* logger_list, struct log_msg* log_msg) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 311 | struct android_log_logger_list* logger_list_internal = |
| 312 | (struct android_log_logger_list*)logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 313 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 314 | int ret = init_transport_context(logger_list_internal); |
| 315 | if (ret < 0) { |
| 316 | return ret; |
| 317 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 318 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 319 | android_log_transport_context* transport_context = &logger_list_internal->transport_context; |
| 320 | return android_transport_read(logger_list_internal, transport_context, log_msg); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | /* Close all the logs */ |
Tom Cherry | 3d6a878 | 2019-02-08 11:46:19 -0800 | [diff] [blame] | 324 | void android_logger_list_free(struct logger_list* logger_list) { |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 325 | struct android_log_logger_list* logger_list_internal = |
| 326 | (struct android_log_logger_list*)logger_list; |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 327 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 328 | if (logger_list_internal == NULL) { |
| 329 | return; |
| 330 | } |
| 331 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 332 | android_log_transport_context* transport_context = &logger_list_internal->transport_context; |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 333 | |
Tom Cherry | ed7c18c | 2019-08-23 14:04:12 -0700 | [diff] [blame^] | 334 | if (transport_context->transport && transport_context->transport->close) { |
| 335 | (*transport_context->transport->close)(logger_list_internal, transport_context); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 336 | } |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 337 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 338 | while (!list_empty(&logger_list_internal->logger)) { |
| 339 | struct listnode* node = list_head(&logger_list_internal->logger); |
Tom Cherry | f623f02 | 2019-01-10 10:37:36 -0800 | [diff] [blame] | 340 | struct android_log_logger* logger = node_to_item(node, struct android_log_logger, node); |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 341 | android_logger_free((struct logger*)logger); |
| 342 | } |
Mark Salyzyn | 5d2670a | 2016-03-08 16:18:26 -0800 | [diff] [blame] | 343 | |
Mark Salyzyn | 6e31568 | 2017-03-09 08:09:43 -0800 | [diff] [blame] | 344 | free(logger_list_internal); |
Mark Salyzyn | dd9094a | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 345 | } |