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38 #include "deduplicate.h"
39 #include <dynamic_config.h>
41 #include <logcommon.h>
42 #include "logconfig.h"
43 #include "loglimiter.h"
45 #define DEFAULT_CONFIG_LIMITER false
46 #define DEFAULT_CONFIG_PLOG true
47 #define DEFAULT_CONFIG_DEBUGMODE 0
48 #define DEFAULT_CONFIG_LIMITER_APPLY_TO_ALL_BUFFERS 0
51 * @brief Points to a function which writes a log message
52 * @details The function pointed to depends on the backend used
53 * @param[in] log_id ID of the buffer to log to. Belongs to (LOG_ID_INVALID, LOG_ID_MAX) non-inclusive
54 * @param[in] prio Priority of the message.
55 * @param[in] tag The message tag, identifies the sender.
56 * @param[in] msg The contents of the message.
57 * @return Returns the number of bytes written on success and a negative error value on error.
58 * @see __dlog_init_backend
60 int (*write_to_log)(log_id_t log_id, log_priority prio, const char *tag, const char *msg, struct timespec *tp_mono) = NULL;
61 void (*destroy_backend)(void);
63 int (*stash_failed_log)(log_id_t log_id, log_priority prio, const char *tag, const char *msg) = NULL;
65 static int stash_critical(log_id_t log_id, log_priority prio, const char *tag, const char *msg);
68 pthread_rwlock_t log_limiter_lock = PTHREAD_RWLOCK_INITIALIZER;
69 static pthread_mutex_t log_construction_lock = PTHREAD_MUTEX_INITIALIZER;
70 static bool is_initialized = false;
72 extern void __dlog_init_pipe(const struct log_config *conf);
73 extern void __dlog_init_android(const struct log_config *conf);
75 extern void prepend_container_tag_if_in_container(size_t buf_size, char buf[static buf_size], int *len);
78 struct limiter_data *limiter_data;
79 static bool dynamic_config;
80 static bool plog[LOG_ID_MAX];
81 static bool plog_default_values[LOG_ID_MAX];
82 static bool enable_secure_logs = true;
83 static bool enable_critical = true;
85 static bool should_disable_cancels;
88 static int fatal_assert;
89 static int limiter_apply_to_all_buffers;
90 static _Atomic log_priority priority_filter_level = DLOG_VERBOSE;
92 /* Here, static_config is the original config from /etc/dlog.conf{,.d} which can be overriden,
93 * but comes back if the override is removed. both_config additionally contains dynamic rules
94 * (by default from /run/dlog/filters.d) which can be changed in the runtime.
95 * The static_config has to be kept separately, so that we can go back to it when dynamic rules change.
96 * Note that most functions only use static_config, since the parameters can't be changed in runtime. */
97 static void __configure_limiter(struct log_config *static_config, struct log_config *both_config)
99 assert(static_config);
106 limiter_data = __log_limiter_create(static_config);
107 if (limiter_data && dynamic_config)
108 __log_limiter_update(limiter_data, both_config);
109 limiter = (bool)limiter_data;
111 should_disable_cancels |= limiter; // due to locks
114 static int __configure_backend(struct log_config *config)
118 const char *const backend = log_config_claim_backend(config);
122 if (!strcmp(backend, "pipe")) {
123 __dlog_init_pipe(config);
124 should_disable_cancels = true;
125 } else if (!strcmp(backend, "logger"))
126 __dlog_init_android(config);
133 static void __set_plog_default_values(void)
135 for (size_t i = 0; i < NELEMS(plog); ++i)
136 plog_default_values[i] = plog[i];
139 static void __initialize_plog(const struct log_config *config)
143 const bool plog_default = log_config_get_boolean(config, "plog", DEFAULT_CONFIG_PLOG);
144 for (size_t i = 0; i < NELEMS(plog); ++i)
145 plog[i] = plog_default;
146 plog[LOG_ID_APPS] = true; // the default does not apply here for backward compatibility reasons.
147 __set_plog_default_values();
150 static void __configure_parameters(struct log_config *static_config, struct log_config *both_config)
152 assert(static_config);
155 __initialize_plog(static_config);
156 __update_plog(static_config);
157 /* Like in __configure_limiter, we also check the dynamic rules. However, we make sure to
158 * set the default values to the ones generated by the static rules first. */
159 __set_plog_default_values();
160 __update_plog(both_config);
162 enable_secure_logs = log_config_get_boolean(both_config, "enable_secure_logs", enable_secure_logs);
163 enable_critical = log_config_get_boolean(both_config, "enable_critical", enable_critical);
164 debugmode = log_config_get_int(both_config, "debugmode", DEFAULT_CONFIG_DEBUGMODE);
165 fatal_assert = access(DEBUGMODE_FILE, F_OK) != -1;
166 limiter = log_config_get_boolean(both_config, "limiter", DEFAULT_CONFIG_LIMITER);
167 limiter_apply_to_all_buffers = log_config_get_int(both_config,
168 "limiter_apply_to_all_buffers",
169 DEFAULT_CONFIG_LIMITER_APPLY_TO_ALL_BUFFERS);
171 stash_failed_log = NULL;
172 const char *stash_failed_log_method = log_config_get(both_config, "stash_failed_log_method");
173 if (stash_failed_log_method) {
175 if (strcmp(stash_failed_log_method, "critical") == 0)
176 stash_failed_log = stash_critical;
181 void __update_plog(const struct log_config *conf)
185 for (size_t i = 0; i < NELEMS(plog); ++i) {
186 char key[MAX_CONF_KEY_LEN];
187 const int r = snprintf(key, sizeof key, "enable_%s", log_name_by_id((log_id_t)i));
190 plog[i] = log_config_get_boolean(conf, key, plog_default_values[i]);
195 * @brief Configure the library
196 * @details Reads relevant config values
197 * @remarks This is more or less a constructor, but there are some obstacles
198 * to using it as such (i.e. with attribute constructor):
200 * - some important pieces of the system link to dlog, they start very early
201 * such that dlog can't properly initialize (which lasts for program lifetime)
202 * but don't actually log anything until later on and would be fine under lazy
203 * initialisation. The way to do it "properly" would be to expose this function
204 * into the API so that people can manually call it when they're ready, but
205 * one of the design goals of the current API is that it requires absolutely no
206 * other calls than `dlog_print`. Changing it would require somebody with a
207 * bird's eye view of the system to produce a design so I wouldn't count on it.
209 * - the constructor would need to have as high of a priority as possible (so as
210 * to minimize the risk of another library's constructor using uninitialized data)
211 * but at the same time others might want some room to wrap functions before
212 * dlog uses them (think mprobe/mcheck). This would also require a design pass.
217 bool __configure(void)
219 __attribute__((cleanup(log_config_free))) struct log_config static_config = {};
220 __attribute__((cleanup(log_config_free))) struct log_config both_config = {};
222 if (log_config_read(&static_config) < 0)
224 log_config_copy(&both_config, &static_config);
226 dynamic_config = __dynamic_config_create(&both_config);
228 __configure_parameters(&static_config, &both_config);
230 if (!__configure_backend(&both_config)) {
231 __dynamic_config_destroy();
232 dynamic_config = false;
236 __configure_deduplicate(&both_config);
237 __configure_limiter(&static_config, &both_config);
242 static void __attribute__((constructor(101))) __install_pipe_handler(void)
244 /* We mask SIGPIPE signal because most applications do not install their
245 * own SIGPIPE handler. Default behaviour in SIGPIPE case is to abort the
246 * process. SIGPIPE occurs when e.g. dlog daemon closes read pipe endpoint.
248 * We do this in the library constructor (at maximum priority) and not
249 * during regular (lazy) initialisation so as to prevent overwriting the
250 * program's actual signal handler, if it has one.
252 * In theory this is not required for the Android logger backend; however,
253 * this early we don't yet know the backend and also it is good to behave
254 * consistently in this regard anyway.
256 * We don't revert this in a destructor because Unix signals are bonkers
257 * and we have no way to do this cleanly. Most libdlog users don't use
258 * runtime linking so this would mostly done at program exit either way. */
259 signal(SIGPIPE, SIG_IGN);
262 static void __attribute__((constructor(102))) __set_output_buffering(void)
264 /* If stdout and/or stderr is redirected to dlog (service, driver)
265 * it is best if we buffer lines, otherwise the following can happen:
266 * - no buffering: service/driver recives every single byte (precisely
267 * every single write*(2) call), causing it to either buffer the data
268 * anyway (service), or print logs at random places (driver)
269 * - full buffering: service/driver receives several hundred lines,
270 * which results in one giant entry being added (driver) or long delays
271 * before logs appear (service) */
272 if (getenv(DLOG_ENV_STDOUT_LINE_BUFFERED))
275 if (getenv(DLOG_ENV_STDERR_LINE_BUFFERED))
279 static bool first = true;
280 static bool initialize(void)
285 /* The mutex acts as a barrier, but otherwise the C language's
286 * machine abstraction is single-threaded. This means that the
287 * compiler is free to rearrange calls inside the mutex according
288 * to the as-if rule because it doesn't care if another thread can
289 * access it in parallel. In particular, `is_initialized = true`
290 * directly after `__configure()` could be rearranged to go in
291 * front of it because it is not touched inside that function
292 * if the compiler thinks it helps somehow (not unlikely: since
293 * it is checked before the mutex, it is very probable for it to
294 * still be in the CPU register or something like that). On top
295 * of that, some architectures (in particular, armv7l) don't have
296 * strict memory guarantees and can reorder actual memory stores
297 * on their own, even if the compiler didn't do anything fancy
298 * when creating machine code. For more info about the issue,
299 * see https://www.aristeia.com/Papers/DDJ_Jul_Aug_2004_revised.pdf
301 * Ultimately this means that there needs to be some sort of
302 * barrier between `__configure` and `is_initialized = true`,
303 * and the simplest way to achieve that is to just wait until
304 * the second entry into the mutex. */
307 pthread_mutex_lock(&log_construction_lock);
309 first = !__configure();
311 is_initialized = true;
313 pthread_mutex_unlock(&log_construction_lock);
318 * @brief Fatal assertion
319 * @details Conditionally crash the sucka who sent the log
320 * @param[in] prio Priority of the log
322 static void __dlog_fatal_assert(int prio)
324 assert(!fatal_assert || (prio != DLOG_FATAL));
328 * @brief Check log validity
329 * @details Checks whether the log is valid and eligible for printing
330 * @param[in] log_id The target buffer ID
331 * @param[in] prio The log's priority
332 * @param[in] tag The log's tag
333 * @return DLOG_ERROR_NONE on success, else an error code.
334 * @retval DLOG_ERROR_INVALID_PARAMETER Invalid parameter
336 static int dlog_check_validity(log_id_t log_id, int prio, const char *tag)
340 return DLOG_ERROR_INVALID_PARAMETER;
342 if (log_id <= LOG_ID_INVALID || LOG_ID_MAX <= log_id)
343 return DLOG_ERROR_INVALID_PARAMETER;
345 return DLOG_ERROR_NONE;
349 * @brief Check log against limiter rules
350 * @details Checks whether the log passes current limiter rules
351 * @param[in] log_id The target buffer ID
352 * @param[in] prio The log's priority
353 * @param[in] tag The log's tag
354 * @return DLOG_ERROR_NONE on success, else an error code.
355 * @retval DLOG_ERROR_NOT_PERMITTED Not permitted
357 static int dlog_check_limiter(log_id_t log_id, int prio, const char *tag)
359 if (!debugmode && prio <= DLOG_DEBUG)
360 return DLOG_ERROR_NOT_PERMITTED;
363 __dynamic_config_update(limiter_data);
366 struct pass_log_result should_log = { .decision = DECISION_DENIED };
368 /* Since the only `wrlock` is done by the dynamic config, we can avoid
369 * the `rdlock` entirely if the config is static. This sounds unsafe
370 * but lets us save an entire syscall, which is a lot (both comparatively
371 * and because it compounds). */
372 if (!dynamic_config || !pthread_rwlock_rdlock(&log_limiter_lock)) {
373 should_log = __log_limiter_pass_log(limiter_data, tag, prio);
375 pthread_rwlock_unlock(&log_limiter_lock);
378 switch (should_log.decision) {
379 case DECISION_DENIED:
380 return DLOG_ERROR_NOT_PERMITTED;
382 case DECISION_TAG_LIMIT_EXCEEDED_MESSAGE:
383 case DECISION_PID_LIMIT_EXCEEDED_MESSAGE: {
385 int result = clock_gettime(CLOCK_MONOTONIC, &tp);
387 return DLOG_ERROR_NOT_PERMITTED;
389 snprintf(buf, sizeof(buf),
390 "Your log has been blocked due to per-%s limit of %d logs per %d seconds.",
391 should_log.decision == DECISION_TAG_LIMIT_EXCEEDED_MESSAGE ? "tag" : "PID",
392 should_log.logs_per_period, should_log.period_s);
393 write_to_log(log_id, prio, tag, buf, &tp);
394 return DLOG_ERROR_NOT_PERMITTED;
397 case DECISION_ALLOWED:
402 /* This can change due to __dynamic_config_update(), but is atomic and its
403 * value implies nothing else so does not need to be under a lock. */
405 return DLOG_ERROR_NOT_PERMITTED;
407 return DLOG_ERROR_NONE;
410 static int __write_to_log_critical_section(log_id_t log_id, int prio, const char *tag, const char *fmt, va_list ap, bool check_should_log)
412 if ((check_should_log || limiter_apply_to_all_buffers) && (dlog_check_limiter(log_id, prio, tag) < 0))
413 return DLOG_ERROR_NONE;
415 char buf[LOG_MAX_PAYLOAD_SIZE];
416 int len = vsnprintf(buf, sizeof buf, fmt, ap);
418 return DLOG_ERROR_NONE;
419 else if (len >= sizeof buf)
420 len = sizeof buf - 1;
422 // Temporary workaround, see temporary.c
423 prepend_container_tag_if_in_container(sizeof buf, buf, &len);
427 if (deduplicate_func && !clock_gettime(CLOCK_MONOTONIC, &tp)) {
428 dlog_deduplicate_e ret = deduplicate_func(buf, len, &tp);
429 if (ret == DLOG_DEDUPLICATE)
430 return DLOG_ERROR_NONE;
431 else if (ret == DLOG_DO_NOT_DEDUPLICATE_BUT_WARN)
432 deduplicate_warn(buf, sizeof buf, len);
433 r = write_to_log(log_id, prio, tag, buf, &tp);
435 r = write_to_log(log_id, prio, tag, buf, NULL);
437 if (r < 0 && stash_failed_log)
438 r = stash_failed_log(log_id, prio, tag, buf);
443 static int __write_to_log(log_id_t log_id, int prio, const char *tag, const char *fmt, va_list ap, bool check_should_log, bool secure_log)
445 int ret = dlog_check_validity(log_id, prio, tag);
449 if (check_should_log && prio < priority_filter_level)
450 return DLOG_ERROR_NONE;
452 /* Threads can be cancelled before they give up a lock.
453 * Therefore cancellation is temporarily disabled as
454 * long as the current set of features uses a lock.
456 * This solution is comparatively simple and cheap.
457 * The other solutions (cleanup handlers, robust mutexes)
458 * would be much more complicated and also inflict larger
459 * runtime costs. The downside of disabling cancellation
460 * is not a problem in our case because it is temporary
461 * and very brief so we don't keep an obsolete thread
462 * for much longer than we otherwise would. */
463 int old_cancel_state;
464 if (should_disable_cancels)
465 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancel_state);
467 /* The only thing that needs to be protected here is `write_to_log` since
468 * all other resources already have their own specific locks (and even the
469 * pointer could be made to point at a null handler instead of a true NULL)
470 * but giving this guarantee makes everything a lot simpler as it removes
471 * the risk of something suddenly becoming NULL during processing. */
472 if (!initialize() || !write_to_log)
473 // TODO: We could consider stashing the failed log here
474 ret = DLOG_ERROR_NOT_PERMITTED;
475 else if (secure_log && !enable_secure_logs)
478 ret = __write_to_log_critical_section(log_id, prio, tag, fmt, ap, check_should_log);
480 if (should_disable_cancels)
481 pthread_setcancelstate(old_cancel_state, NULL);
486 int __critical_log_append_timestamp(char *buf, size_t buflen)
488 /* NB: the timestamp may slightly differ from the one that gets
489 * added onto the copy that goes into the regular buffer, and
490 * timestamp acquisition is duplicated. This would ideally be
491 * solved, but timestamps are currently added fairly deep in
492 * backend-specific functions so for now this will have to do.
493 * Also, since we're the sender, there is just this one set of
494 * timestamps, i.e. the send timestamp! The usual alternative
495 * set of receive timestamps will never have the opportunity
496 * to get added to the entry since this log is supposed to end
497 * up straight in the file (there's potentially the trusted
498 * writer binary but we're trying to keep the set of actions
499 * it needs to do to the minimum and those timestamps would
500 * in practice be the same anyway). */
503 clock_gettime(CLOCK_REALTIME, &ts);
504 const time_t tt = ts.tv_sec;
505 const long int real_millisec = ts.tv_nsec / 1000000;
506 clock_gettime(CLOCK_MONOTONIC, &ts);
508 struct tm *const ptm = localtime_r(&tt, &tmBuf);
509 assert(ptm); // we're in a short lived fork so asserts are fine and make things simple
511 int len = strftime(buf, buflen, "%m-%d %H:%M:%S", ptm);
514 int tmp_len = snprintf(buf + len, buflen - len, ".%03ld", real_millisec);
516 assert(tmp_len < buflen - len);
519 tmp_len = strftime(buf + len, buflen - len, "%z ", ptm);
520 assert(tmp_len != 0);
523 tmp_len = snprintf(buf + len, buflen - len, "%5lu.%03ld", ts.tv_sec, ts.tv_nsec / 1000000);
525 assert(tmp_len < buflen - len);
531 int __critical_log_build_msg(char *buf, size_t buflen, pid_t main_pid, pid_t main_tid, log_id_t log_id, int prio, const char *tag, const char *fmt, va_list ap)
533 int len = __critical_log_append_timestamp(buf, buflen);
534 const int metadata_len = snprintf(buf + len, buflen - len, " P%5d T%5d B%-6s %c/%-8s: ",
537 log_name_by_id(log_id),
538 filter_pri_to_char(prio),
539 tag ?: "CRITICAL_NO_TAG");
540 assert(metadata_len > 0);
541 if (metadata_len >= buflen - len)
542 return buflen - 1; // can genuinely happen with an exceedingly large tag
545 const int content_len = vsnprintf(buf + len, buflen - len, fmt, ap);
546 assert(content_len >= 0); // 0 is legit with format == ""
547 if (content_len >= buflen - len)
555 __attribute__ ((noreturn))
557 void __critical_log_child(pid_t main_pid, pid_t main_tid, log_id_t log_id, int prio, const char *tag, const char *fmt, va_list ap)
559 char buf[LOG_MAX_PAYLOAD_SIZE + 128]; // extra space for some metadata
560 const int len = __critical_log_build_msg(buf, sizeof buf - 1, main_pid, main_tid, log_id, prio, tag, fmt, ap);
564 static const char *const path = "/usr/libexec/dlog-log-critical";
565 execl(path, path /* argv[0] convention */, buf, (char *) NULL);
568 /* Compilers are sometimes smart enough to recognize _exit's
569 * noreturn attribute, even if we wrap it with something that
570 * returns. This causes it to behave in unexpected ways, for
571 * example it can blow up the program regardless or it can
572 * optimize some conditionals out (and incorrectly enter them
573 * after the exit call fails to actually exit). This makes it
574 * unsuitable for tests. */
576 _exit(1); // not the regular `exit` so as not to trigger any `atexit` handlers prematurely
580 #ifndef UNIT_TEST // contains forks and exits, these don't work well with wrapping (see above)
581 void __critical_log(log_id_t log_id, int prio, const char *tag, const char *fmt, va_list ap)
583 /* Critical log functionality is mostly done in a separate binary
584 * to handle security correctly (else every process would have to
585 * possess the necessary privilege to write onto that file, which
586 * would be opening a fairly nasty can of worms from the security
587 * point of view). Our use of exec() is why a simple thread would
588 * not suffice and we're resorting to a fork.
590 * The double fork, much like a double barreled 12 gauge shotgun,
591 * is an elegant solution designed to stop a zombie army. We'd be
592 * creating zombie processes if we didn't wait() for the children
593 * we spawn, but we don't really want to do that since it results
594 * in a needless delay. Instead, the writer process is actually a
595 * grandchild, with our direct child exiting immediately just for
596 * us to have something to wait on that is guaranteed not to take
597 * too long. The orphaned grandchild is adopted by init, who will
598 * take care to reap it when it dies. In addition to avoiding the
599 * delay, the client will not have any unexpected children (which
600 * could ruin logic in its own waits).
603 * ┌───────┐ ┌─────────┐ ┌─────────────┐ ┌────────┐
604 * │ pid 1 ├──>│ libdlog ├──>│ immediately ├──>│ execs │
605 * │ init │ │ client │ │ exits │ │ writer │
606 * └───────┘ └─────────┘ └─────────────┘ └────────┘
608 * Afterwards, libdlog has no children:
609 * ┌───────┐ ┌─────────┐ ┌────────┐
610 * │ pid 1 ├──>│ libdlog │ ┌─────────>│ writer │
611 * │ init ├─┐ │ client │ │ │ binary │
612 * └───────┘ │ └─────────┘ │ └────────┘
613 * └──────────────────────┘
618 if (!enable_critical)
621 const pid_t main_pid = getpid();
622 const pid_t main_tid = gettid();
624 const int temporary_exiter_pid = fork();
625 if (temporary_exiter_pid < 0)
627 if (temporary_exiter_pid != 0) {
628 waitpid(temporary_exiter_pid, NULL, 0);
632 const int child_pid = fork();
638 __critical_log_child(main_pid, main_tid, log_id, prio, tag, fmt, ap);
641 static void stash_critical_inner(log_id_t log_id, log_priority prio, const char *tag, const char *fmt, ...)
646 __critical_log(log_id, prio, tag, fmt, ap);
650 static int stash_critical(log_id_t log_id, log_priority prio, const char *tag, const char *msg)
652 stash_critical_inner(log_id, prio, tag, "FAILED TO LOG: %s", msg);
656 EXPORT_API int __dlog_critical_print(log_id_t log_id, int prio, const char *tag, const char *fmt, ...)
661 __critical_log(log_id, prio, tag, fmt, ap);
665 int ret = __dlog_vprint(log_id, prio, tag, fmt, ap);
672 EXPORT_API int dlog_set_minimum_priority(int priority)
674 if (priority < DLOG_DEFAULT || priority > DLOG_PRIO_MAX)
675 return DLOG_ERROR_INVALID_PARAMETER;
677 priority_filter_level = priority;
678 return DLOG_ERROR_NONE;
683 * @details Print a log line
684 * @param[in] log_id The target buffer ID
685 * @param[in] prio Priority
687 * @param[in] fmt Format (same as printf)
688 * @param[in] ap Argument list
689 * @return Bytes written, or negative error
691 EXPORT_API int __dlog_vprint(log_id_t log_id, int prio, const char *tag, const char *fmt, va_list ap)
693 int ret = __write_to_log(log_id, prio, tag, fmt, ap, true, false);
694 __dlog_fatal_assert(prio);
701 * @details Print a log line
702 * @param[in] log_id The target buffer ID
703 * @param[in] prio Priority
705 * @param[in] fmt Format (same as printf)
706 * @return Bytes written, or negative error
708 EXPORT_API int __dlog_print(log_id_t log_id, int prio, const char *tag, const char *fmt, ...)
713 int ret = __dlog_vprint(log_id, prio, tag, fmt, ap);
721 * @details Print a log line
722 * @param[in] log_id The target buffer ID
723 * @param[in] prio Priority
725 * @param[in] fmt Format (same as printf)
726 * @return Bytes written, or negative error
728 EXPORT_API int __dlog_sec_print(log_id_t log_id, int prio, const char *tag, const char *fmt, ...)
730 if (!enable_secure_logs)
736 int ret = __write_to_log(log_id, prio, tag, fmt, ap, true, true);
737 __dlog_fatal_assert(prio);
743 EXPORT_API int dlog_vprint(log_priority prio, const char *tag, const char *fmt, va_list ap)
745 return __write_to_log(LOG_ID_APPS, prio, tag, fmt, ap, false, false);
748 EXPORT_API int dlog_print(log_priority prio, const char *tag, const char *fmt, ...)
753 int ret = dlog_vprint(prio, tag, fmt, ap);
760 * @brief Finalize DLog
761 * @details Finalizes and deallocates the library
762 * @notes Used directly in tests; brings back the pre-init state
764 void __dlog_fini(void)
766 if (destroy_backend) {
768 destroy_backend = NULL;
771 stash_failed_log = NULL;
772 is_initialized = false;
775 enable_secure_logs = true;
776 enable_critical = false;
777 __deduplicate_destroy();
778 __log_limiter_destroy(limiter_data);
780 __dynamic_config_destroy();
781 should_disable_cancels = false;