Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 1 | /* |
Mark Salyzyn | d0a83fd | 2014-01-09 07:45:30 -0800 | [diff] [blame] | 2 | ** Copyright 2013-2014, The Android Open Source Project |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 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 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 17 | #include <errno.h> |
| 18 | #include <fcntl.h> |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 19 | #include <inttypes.h> |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 20 | #include <signal.h> |
| 21 | #include <stddef.h> |
| 22 | #define NOMINMAX /* for windows to suppress definition of min in stdlib.h */ |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 23 | #include <stdlib.h> |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 24 | #include <string.h> |
| 25 | #include <unistd.h> |
| 26 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 27 | #include <cutils/list.h> |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 28 | #include <cutils/sockets.h> |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 29 | #include <log/log.h> |
| 30 | #include <log/logger.h> |
| 31 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 32 | /* branchless on many architectures. */ |
| 33 | #define min(x,y) ((y) ^ (((x) ^ (y)) & -((x) < (y)))) |
Mark Salyzyn | 1345f38 | 2014-01-14 08:41:27 -0800 | [diff] [blame] | 34 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 35 | #define WEAK __attribute__((weak)) |
| 36 | #define UNUSED __attribute__((unused)) |
Mark Salyzyn | 1345f38 | 2014-01-14 08:41:27 -0800 | [diff] [blame] | 37 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 38 | /* Private copy of ../libcutils/socket_local_client.c prevent library loops */ |
Mark Salyzyn | 1345f38 | 2014-01-14 08:41:27 -0800 | [diff] [blame] | 39 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 40 | #ifdef HAVE_WINSOCK |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 41 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 42 | int WEAK socket_local_client(const char *name, int namespaceId, int type) |
| 43 | { |
| 44 | errno = ENOSYS; |
| 45 | return -ENOSYS; |
| 46 | } |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 47 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 48 | #else /* !HAVE_WINSOCK */ |
| 49 | |
| 50 | #include <sys/socket.h> |
| 51 | #include <sys/un.h> |
| 52 | #include <sys/select.h> |
| 53 | #include <sys/types.h> |
| 54 | |
| 55 | /* Private copy of ../libcutils/socket_local.h prevent library loops */ |
| 56 | #define FILESYSTEM_SOCKET_PREFIX "/tmp/" |
| 57 | #define ANDROID_RESERVED_SOCKET_PREFIX "/dev/socket/" |
| 58 | /* End of ../libcutils/socket_local.h */ |
| 59 | |
| 60 | #define LISTEN_BACKLOG 4 |
| 61 | |
| 62 | /* Documented in header file. */ |
| 63 | int WEAK socket_make_sockaddr_un(const char *name, int namespaceId, |
| 64 | struct sockaddr_un *p_addr, socklen_t *alen) |
| 65 | { |
| 66 | memset (p_addr, 0, sizeof (*p_addr)); |
| 67 | size_t namelen; |
| 68 | |
| 69 | switch (namespaceId) { |
| 70 | case ANDROID_SOCKET_NAMESPACE_ABSTRACT: |
| 71 | #ifdef HAVE_LINUX_LOCAL_SOCKET_NAMESPACE |
| 72 | namelen = strlen(name); |
| 73 | |
| 74 | /* Test with length +1 for the *initial* '\0'. */ |
| 75 | if ((namelen + 1) > sizeof(p_addr->sun_path)) { |
| 76 | goto error; |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | * Note: The path in this case is *not* supposed to be |
| 81 | * '\0'-terminated. ("man 7 unix" for the gory details.) |
| 82 | */ |
| 83 | |
| 84 | p_addr->sun_path[0] = 0; |
| 85 | memcpy(p_addr->sun_path + 1, name, namelen); |
| 86 | #else /*HAVE_LINUX_LOCAL_SOCKET_NAMESPACE*/ |
| 87 | /* this OS doesn't have the Linux abstract namespace */ |
| 88 | |
| 89 | namelen = strlen(name) + strlen(FILESYSTEM_SOCKET_PREFIX); |
| 90 | /* unix_path_max appears to be missing on linux */ |
| 91 | if (namelen > sizeof(*p_addr) |
| 92 | - offsetof(struct sockaddr_un, sun_path) - 1) { |
| 93 | goto error; |
| 94 | } |
| 95 | |
| 96 | strcpy(p_addr->sun_path, FILESYSTEM_SOCKET_PREFIX); |
| 97 | strcat(p_addr->sun_path, name); |
| 98 | #endif /*HAVE_LINUX_LOCAL_SOCKET_NAMESPACE*/ |
| 99 | break; |
| 100 | |
| 101 | case ANDROID_SOCKET_NAMESPACE_RESERVED: |
| 102 | namelen = strlen(name) + strlen(ANDROID_RESERVED_SOCKET_PREFIX); |
| 103 | /* unix_path_max appears to be missing on linux */ |
| 104 | if (namelen > sizeof(*p_addr) |
| 105 | - offsetof(struct sockaddr_un, sun_path) - 1) { |
| 106 | goto error; |
| 107 | } |
| 108 | |
| 109 | strcpy(p_addr->sun_path, ANDROID_RESERVED_SOCKET_PREFIX); |
| 110 | strcat(p_addr->sun_path, name); |
| 111 | break; |
| 112 | |
| 113 | case ANDROID_SOCKET_NAMESPACE_FILESYSTEM: |
| 114 | namelen = strlen(name); |
| 115 | /* unix_path_max appears to be missing on linux */ |
| 116 | if (namelen > sizeof(*p_addr) |
| 117 | - offsetof(struct sockaddr_un, sun_path) - 1) { |
| 118 | goto error; |
| 119 | } |
| 120 | |
| 121 | strcpy(p_addr->sun_path, name); |
| 122 | break; |
| 123 | |
| 124 | default: |
| 125 | /* invalid namespace id */ |
| 126 | return -1; |
| 127 | } |
| 128 | |
| 129 | p_addr->sun_family = AF_LOCAL; |
| 130 | *alen = namelen + offsetof(struct sockaddr_un, sun_path) + 1; |
| 131 | return 0; |
| 132 | error: |
| 133 | return -1; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * connect to peer named "name" on fd |
| 138 | * returns same fd or -1 on error. |
| 139 | * fd is not closed on error. that's your job. |
| 140 | * |
| 141 | * Used by AndroidSocketImpl |
| 142 | */ |
| 143 | int WEAK socket_local_client_connect(int fd, const char *name, int namespaceId, |
| 144 | int type UNUSED) |
| 145 | { |
| 146 | struct sockaddr_un addr; |
| 147 | socklen_t alen; |
| 148 | size_t namelen; |
| 149 | int err; |
| 150 | |
| 151 | err = socket_make_sockaddr_un(name, namespaceId, &addr, &alen); |
| 152 | |
| 153 | if (err < 0) { |
| 154 | goto error; |
| 155 | } |
| 156 | |
| 157 | if(connect(fd, (struct sockaddr *) &addr, alen) < 0) { |
| 158 | goto error; |
| 159 | } |
| 160 | |
| 161 | return fd; |
| 162 | |
| 163 | error: |
| 164 | return -1; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * connect to peer named "name" |
| 169 | * returns fd or -1 on error |
| 170 | */ |
| 171 | int WEAK socket_local_client(const char *name, int namespaceId, int type) |
| 172 | { |
| 173 | int s; |
| 174 | |
| 175 | s = socket(AF_LOCAL, type, 0); |
| 176 | if(s < 0) return -1; |
| 177 | |
| 178 | if ( 0 > socket_local_client_connect(s, name, namespaceId, type)) { |
| 179 | close(s); |
| 180 | return -1; |
| 181 | } |
| 182 | |
| 183 | return s; |
| 184 | } |
| 185 | |
| 186 | #endif /* !HAVE_WINSOCK */ |
| 187 | /* End of ../libcutils/socket_local_client.c */ |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 188 | |
| 189 | #define logger_for_each(logger, logger_list) \ |
| 190 | for (logger = node_to_item((logger_list)->node.next, struct logger, node); \ |
| 191 | logger != node_to_item(&(logger_list)->node, struct logger, node); \ |
| 192 | logger = node_to_item((logger)->node.next, struct logger, node)) |
| 193 | |
| 194 | /* In the future, we would like to make this list extensible */ |
| 195 | static const char *LOG_NAME[LOG_ID_MAX] = { |
| 196 | [LOG_ID_MAIN] = "main", |
| 197 | [LOG_ID_RADIO] = "radio", |
| 198 | [LOG_ID_EVENTS] = "events", |
Mark Salyzyn | 99f47a9 | 2014-04-07 14:58:08 -0700 | [diff] [blame^] | 199 | [LOG_ID_SYSTEM] = "system", |
| 200 | [LOG_ID_CRASH] = "crash", |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 201 | }; |
| 202 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 203 | const char *android_log_id_to_name(log_id_t log_id) |
| 204 | { |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 205 | if (log_id >= LOG_ID_MAX) { |
| 206 | log_id = LOG_ID_MAIN; |
| 207 | } |
| 208 | return LOG_NAME[log_id]; |
| 209 | } |
| 210 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 211 | log_id_t android_name_to_log_id(const char *logName) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 212 | { |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 213 | const char *b; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 214 | int ret; |
| 215 | |
| 216 | if (!logName) { |
| 217 | return -1; /* NB: log_id_t is unsigned */ |
| 218 | } |
| 219 | b = strrchr(logName, '/'); |
| 220 | if (!b) { |
| 221 | b = logName; |
| 222 | } else { |
| 223 | ++b; |
| 224 | } |
| 225 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 226 | for(ret = LOG_ID_MIN; ret < LOG_ID_MAX; ++ret) { |
| 227 | const char *l = LOG_NAME[ret]; |
| 228 | if (l && !strcmp(b, l)) { |
| 229 | return ret; |
| 230 | } |
| 231 | } |
| 232 | return -1; /* should never happen */ |
| 233 | } |
| 234 | |
| 235 | struct logger_list { |
| 236 | struct listnode node; |
| 237 | int mode; |
| 238 | unsigned int tail; |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 239 | log_time start; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 240 | pid_t pid; |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 241 | int sock; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 242 | }; |
| 243 | |
| 244 | struct logger { |
| 245 | struct listnode node; |
| 246 | struct logger_list *top; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 247 | log_id_t id; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 248 | }; |
| 249 | |
| 250 | /* android_logger_alloc unimplemented, no use case */ |
| 251 | /* android_logger_free not exported */ |
| 252 | static void android_logger_free(struct logger *logger) |
| 253 | { |
| 254 | if (!logger) { |
| 255 | return; |
| 256 | } |
| 257 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 258 | list_remove(&logger->node); |
| 259 | |
| 260 | free(logger); |
| 261 | } |
| 262 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 263 | /* android_logger_alloc unimplemented, no use case */ |
| 264 | |
| 265 | /* method for getting the associated sublog id */ |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 266 | log_id_t android_logger_get_id(struct logger *logger) |
| 267 | { |
| 268 | return logger->id; |
| 269 | } |
| 270 | |
| 271 | /* worker for sending the command to the logger */ |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 272 | static ssize_t send_log_msg(struct logger *logger, |
| 273 | const char *msg, char *buf, size_t buf_size) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 274 | { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 275 | ssize_t ret; |
Greg Hackmann | 8084a53 | 2014-03-17 13:08:31 -0700 | [diff] [blame] | 276 | int errno_save = 0; |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 277 | int sock = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_RESERVED, |
| 278 | SOCK_STREAM); |
| 279 | if (sock < 0) { |
Greg Hackmann | 8084a53 | 2014-03-17 13:08:31 -0700 | [diff] [blame] | 280 | return sock; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 281 | } |
| 282 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 283 | if (msg) { |
| 284 | snprintf(buf, buf_size, msg, logger ? logger->id : (unsigned) -1); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 285 | } |
| 286 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 287 | ret = write(sock, buf, strlen(buf) + 1); |
| 288 | if (ret <= 0) { |
| 289 | goto done; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 290 | } |
| 291 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 292 | ret = read(sock, buf, buf_size); |
| 293 | |
| 294 | done: |
| 295 | if ((ret == -1) && errno) { |
Greg Hackmann | 8084a53 | 2014-03-17 13:08:31 -0700 | [diff] [blame] | 296 | errno_save = errno; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 297 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 298 | close(sock); |
Greg Hackmann | 8084a53 | 2014-03-17 13:08:31 -0700 | [diff] [blame] | 299 | if (errno_save) { |
| 300 | errno = errno_save; |
| 301 | } |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 302 | return ret; |
| 303 | } |
| 304 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 305 | static int check_log_success(char *buf, ssize_t ret) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 306 | { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 307 | if (ret < 0) { |
| 308 | return ret; |
| 309 | } |
| 310 | |
| 311 | if (strncmp(buf, "success", 7)) { |
Greg Hackmann | 8084a53 | 2014-03-17 13:08:31 -0700 | [diff] [blame] | 312 | errno = EINVAL; |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 313 | return -1; |
| 314 | } |
| 315 | |
| 316 | return 0; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 317 | } |
| 318 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 319 | int android_logger_clear(struct logger *logger) |
| 320 | { |
| 321 | char buf[512]; |
| 322 | |
| 323 | return check_log_success(buf, |
| 324 | send_log_msg(logger, "clear %d", buf, sizeof(buf))); |
| 325 | } |
| 326 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 327 | /* returns the total size of the log's ring buffer */ |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 328 | long android_logger_get_log_size(struct logger *logger) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 329 | { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 330 | char buf[512]; |
| 331 | |
| 332 | ssize_t ret = send_log_msg(logger, "getLogSize %d", buf, sizeof(buf)); |
| 333 | if (ret < 0) { |
| 334 | return ret; |
| 335 | } |
| 336 | |
| 337 | if ((buf[0] < '0') || ('9' < buf[0])) { |
| 338 | return -1; |
| 339 | } |
| 340 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 341 | return atol(buf); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 342 | } |
| 343 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 344 | int android_logger_set_log_size(struct logger *logger, unsigned long size) |
| 345 | { |
| 346 | char buf[512]; |
| 347 | |
| 348 | snprintf(buf, sizeof(buf), "setLogSize %d %lu", |
| 349 | logger ? logger->id : (unsigned) -1, size); |
| 350 | |
| 351 | return check_log_success(buf, send_log_msg(NULL, NULL, buf, sizeof(buf))); |
| 352 | } |
| 353 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 354 | /* |
| 355 | * returns the readable size of the log's ring buffer (that is, amount of the |
| 356 | * log consumed) |
| 357 | */ |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 358 | long android_logger_get_log_readable_size(struct logger *logger) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 359 | { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 360 | char buf[512]; |
| 361 | |
| 362 | ssize_t ret = send_log_msg(logger, "getLogSizeUsed %d", buf, sizeof(buf)); |
| 363 | if (ret < 0) { |
| 364 | return ret; |
| 365 | } |
| 366 | |
| 367 | if ((buf[0] < '0') || ('9' < buf[0])) { |
| 368 | return -1; |
| 369 | } |
| 370 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 371 | return atol(buf); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | /* |
| 375 | * returns the logger version |
| 376 | */ |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 377 | int android_logger_get_log_version(struct logger *logger UNUSED) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 378 | { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 379 | return 3; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 380 | } |
| 381 | |
Mark Salyzyn | 34facab | 2014-02-06 14:48:50 -0800 | [diff] [blame] | 382 | /* |
| 383 | * returns statistics |
| 384 | */ |
| 385 | ssize_t android_logger_get_statistics(struct logger_list *logger_list, |
| 386 | char *buf, size_t len) |
| 387 | { |
| 388 | struct listnode *node; |
| 389 | struct logger *logger; |
| 390 | char *cp = buf; |
| 391 | size_t remaining = len; |
| 392 | size_t n; |
| 393 | |
| 394 | n = snprintf(cp, remaining, "getStatistics"); |
| 395 | n = min(n, remaining); |
| 396 | remaining -= n; |
| 397 | cp += n; |
| 398 | |
| 399 | logger_for_each(logger, logger_list) { |
| 400 | n = snprintf(cp, remaining, " %d", logger->id); |
| 401 | n = min(n, remaining); |
| 402 | remaining -= n; |
| 403 | cp += n; |
| 404 | } |
| 405 | return send_log_msg(NULL, NULL, buf, len); |
| 406 | } |
| 407 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 408 | ssize_t android_logger_get_prune_list(struct logger_list *logger_list UNUSED, |
| 409 | char *buf, size_t len) |
| 410 | { |
| 411 | return send_log_msg(NULL, "getPruneList", buf, len); |
| 412 | } |
| 413 | |
| 414 | int android_logger_set_prune_list(struct logger_list *logger_list UNUSED, |
| 415 | char *buf, size_t len) |
| 416 | { |
| 417 | const char cmd[] = "setPruneList "; |
| 418 | const size_t cmdlen = sizeof(cmd) - 1; |
| 419 | |
| 420 | if (strlen(buf) > (len - cmdlen)) { |
| 421 | return -ENOMEM; /* KISS */ |
| 422 | } |
| 423 | memmove(buf + cmdlen, buf, len - cmdlen); |
| 424 | buf[len - 1] = '\0'; |
| 425 | memcpy(buf, cmd, cmdlen); |
| 426 | |
| 427 | return check_log_success(buf, send_log_msg(NULL, NULL, buf, len)); |
| 428 | } |
| 429 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 430 | struct logger_list *android_logger_list_alloc(int mode, |
| 431 | unsigned int tail, |
| 432 | pid_t pid) |
| 433 | { |
| 434 | struct logger_list *logger_list; |
| 435 | |
| 436 | logger_list = calloc(1, sizeof(*logger_list)); |
| 437 | if (!logger_list) { |
| 438 | return NULL; |
| 439 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 440 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 441 | list_init(&logger_list->node); |
| 442 | logger_list->mode = mode; |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 443 | logger_list->start.tv_sec = 0; |
| 444 | logger_list->start.tv_nsec = 0; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 445 | logger_list->tail = tail; |
| 446 | logger_list->pid = pid; |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 447 | logger_list->sock = -1; |
| 448 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 449 | return logger_list; |
| 450 | } |
| 451 | |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 452 | struct logger_list *android_logger_list_alloc_time(int mode, |
| 453 | log_time start, |
| 454 | pid_t pid) |
| 455 | { |
| 456 | struct logger_list *logger_list; |
| 457 | |
| 458 | logger_list = calloc(1, sizeof(*logger_list)); |
| 459 | if (!logger_list) { |
| 460 | return NULL; |
| 461 | } |
| 462 | |
| 463 | list_init(&logger_list->node); |
| 464 | logger_list->mode = mode; |
| 465 | logger_list->start = start; |
| 466 | logger_list->tail = 0; |
| 467 | logger_list->pid = pid; |
| 468 | logger_list->sock = -1; |
| 469 | |
| 470 | return logger_list; |
| 471 | } |
| 472 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 473 | /* android_logger_list_register unimplemented, no use case */ |
| 474 | /* android_logger_list_unregister unimplemented, no use case */ |
| 475 | |
| 476 | /* Open the named log and add it to the logger list */ |
| 477 | struct logger *android_logger_open(struct logger_list *logger_list, |
| 478 | log_id_t id) |
| 479 | { |
| 480 | struct listnode *node; |
| 481 | struct logger *logger; |
| 482 | char *n; |
| 483 | |
| 484 | if (!logger_list || (id >= LOG_ID_MAX)) { |
| 485 | goto err; |
| 486 | } |
| 487 | |
| 488 | logger_for_each(logger, logger_list) { |
| 489 | if (logger->id == id) { |
| 490 | goto ok; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | logger = calloc(1, sizeof(*logger)); |
| 495 | if (!logger) { |
| 496 | goto err; |
| 497 | } |
| 498 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 499 | logger->id = id; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 500 | list_add_tail(&logger_list->node, &logger->node); |
| 501 | logger->top = logger_list; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 502 | goto ok; |
| 503 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 504 | err: |
| 505 | logger = NULL; |
| 506 | ok: |
| 507 | return logger; |
| 508 | } |
| 509 | |
| 510 | /* Open the single named log and make it part of a new logger list */ |
| 511 | struct logger_list *android_logger_list_open(log_id_t id, |
| 512 | int mode, |
| 513 | unsigned int tail, |
| 514 | pid_t pid) |
| 515 | { |
| 516 | struct logger_list *logger_list = android_logger_list_alloc(mode, tail, pid); |
| 517 | if (!logger_list) { |
| 518 | return NULL; |
| 519 | } |
| 520 | |
| 521 | if (!android_logger_open(logger_list, id)) { |
| 522 | android_logger_list_free(logger_list); |
| 523 | return NULL; |
| 524 | } |
| 525 | |
| 526 | return logger_list; |
| 527 | } |
| 528 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 529 | static void caught_signal(int signum UNUSED) |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 530 | { |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | /* Read from the selected logs */ |
| 534 | int android_logger_list_read(struct logger_list *logger_list, |
| 535 | struct log_msg *log_msg) |
| 536 | { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 537 | int ret, e; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 538 | struct logger *logger; |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 539 | struct sigaction ignore; |
| 540 | struct sigaction old_sigaction; |
| 541 | unsigned int old_alarm = 0; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 542 | |
| 543 | if (!logger_list) { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 544 | return -EINVAL; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 545 | } |
| 546 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 547 | if (logger_list->mode & O_NONBLOCK) { |
| 548 | memset(&ignore, 0, sizeof(ignore)); |
| 549 | ignore.sa_handler = caught_signal; |
| 550 | sigemptyset(&ignore.sa_mask); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 551 | } |
| 552 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 553 | if (logger_list->sock < 0) { |
| 554 | char buffer[256], *cp, c; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 555 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 556 | int sock = socket_local_client("logdr", |
| 557 | ANDROID_SOCKET_NAMESPACE_RESERVED, |
| 558 | SOCK_SEQPACKET); |
| 559 | if (sock < 0) { |
| 560 | if ((sock == -1) && errno) { |
| 561 | return -errno; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 562 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 563 | return sock; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 564 | } |
| 565 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 566 | strcpy(buffer, |
| 567 | (logger_list->mode & O_NONBLOCK) ? "dumpAndClose" : "stream"); |
| 568 | cp = buffer + strlen(buffer); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 569 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 570 | strcpy(cp, " lids"); |
| 571 | cp += 5; |
| 572 | c = '='; |
| 573 | int remaining = sizeof(buffer) - (cp - buffer); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 574 | logger_for_each(logger, logger_list) { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 575 | ret = snprintf(cp, remaining, "%c%u", c, logger->id); |
| 576 | ret = min(ret, remaining); |
| 577 | remaining -= ret; |
| 578 | cp += ret; |
| 579 | c = ','; |
| 580 | } |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 581 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 582 | if (logger_list->tail) { |
| 583 | ret = snprintf(cp, remaining, " tail=%u", logger_list->tail); |
| 584 | ret = min(ret, remaining); |
| 585 | remaining -= ret; |
| 586 | cp += ret; |
| 587 | } |
| 588 | |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 589 | if (logger_list->start.tv_sec || logger_list->start.tv_nsec) { |
| 590 | ret = snprintf(cp, remaining, " start=%" PRIu32 ".%09" PRIu32, |
| 591 | logger_list->start.tv_sec, |
| 592 | logger_list->start.tv_nsec); |
| 593 | ret = min(ret, remaining); |
| 594 | remaining -= ret; |
| 595 | cp += ret; |
| 596 | } |
| 597 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 598 | if (logger_list->pid) { |
| 599 | ret = snprintf(cp, remaining, " pid=%u", logger_list->pid); |
| 600 | ret = min(ret, remaining); |
| 601 | remaining -= ret; |
| 602 | cp += ret; |
| 603 | } |
| 604 | |
| 605 | if (logger_list->mode & O_NONBLOCK) { |
| 606 | /* Deal with an unresponsive logd */ |
| 607 | sigaction(SIGALRM, &ignore, &old_sigaction); |
| 608 | old_alarm = alarm(30); |
| 609 | } |
| 610 | ret = write(sock, buffer, cp - buffer); |
| 611 | e = errno; |
| 612 | if (logger_list->mode & O_NONBLOCK) { |
| 613 | if (e == EINTR) { |
| 614 | e = ETIMEDOUT; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 615 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 616 | alarm(old_alarm); |
| 617 | sigaction(SIGALRM, &old_sigaction, NULL); |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 618 | } |
| 619 | |
| 620 | if (ret <= 0) { |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 621 | close(sock); |
| 622 | if ((ret == -1) && e) { |
| 623 | return -e; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 624 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 625 | if (ret == 0) { |
| 626 | return -EIO; |
| 627 | } |
| 628 | return ret; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 629 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 630 | |
| 631 | logger_list->sock = sock; |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 632 | } |
| 633 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 634 | ret = 0; |
| 635 | while(1) { |
| 636 | memset(log_msg, 0, sizeof(*log_msg)); |
| 637 | |
| 638 | if (logger_list->mode & O_NONBLOCK) { |
| 639 | /* particularily useful if tombstone is reporting for logd */ |
| 640 | sigaction(SIGALRM, &ignore, &old_sigaction); |
| 641 | old_alarm = alarm(30); |
| 642 | } |
| 643 | /* NOTE: SOCK_SEQPACKET guarantees we read exactly one full entry */ |
| 644 | ret = recv(logger_list->sock, log_msg, LOGGER_ENTRY_MAX_LEN, 0); |
| 645 | e = errno; |
| 646 | if (logger_list->mode & O_NONBLOCK) { |
| 647 | if ((ret == 0) || (e == EINTR)) { |
| 648 | e = EAGAIN; |
| 649 | ret = -1; |
| 650 | } |
| 651 | alarm(old_alarm); |
| 652 | sigaction(SIGALRM, &old_sigaction, NULL); |
| 653 | } |
| 654 | |
| 655 | if (ret <= 0) { |
| 656 | if ((ret == -1) && e) { |
| 657 | return -e; |
| 658 | } |
| 659 | return ret; |
| 660 | } |
| 661 | |
| 662 | logger_for_each(logger, logger_list) { |
| 663 | if (log_msg->entry.lid == logger->id) { |
| 664 | return ret; |
| 665 | } |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 666 | } |
| 667 | } |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 668 | /* NOTREACH */ |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 669 | return ret; |
| 670 | } |
| 671 | |
| 672 | /* Close all the logs */ |
| 673 | void android_logger_list_free(struct logger_list *logger_list) |
| 674 | { |
| 675 | if (logger_list == NULL) { |
| 676 | return; |
| 677 | } |
| 678 | |
| 679 | while (!list_empty(&logger_list->node)) { |
| 680 | struct listnode *node = list_head(&logger_list->node); |
| 681 | struct logger *logger = node_to_item(node, struct logger, node); |
| 682 | android_logger_free(logger); |
| 683 | } |
| 684 | |
Mark Salyzyn | 154f460 | 2014-02-20 14:59:07 -0800 | [diff] [blame] | 685 | if (logger_list->sock >= 0) { |
| 686 | close (logger_list->sock); |
| 687 | } |
| 688 | |
Mark Salyzyn | 4295841 | 2013-11-22 10:50:27 -0800 | [diff] [blame] | 689 | free(logger_list); |
| 690 | } |