diff --git a/lib/log.c b/lib/log.c index 52c906e..6a17836 100644 --- a/lib/log.c +++ b/lib/log.c @@ -1,1125 +1,1125 @@ /* * Copyright (C) 2011 Red Hat, Inc. * * All rights reserved. * * Author: Angus Salkeld * * libqb is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 2.1 of the License, or * (at your option) any later version. * * libqb is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with libqb. If not, see . */ #include "os_base.h" #include #ifdef HAVE_LINK_H #include #endif /* HAVE_LINK_H */ #include #include #ifdef HAVE_DLFCN_H #include #endif /* HAVE_DLFCN_H */ #include #include #include #include #include #include #include #include "log_int.h" #include "util_int.h" #include static struct qb_log_target conf[QB_LOG_TARGET_MAX]; static uint32_t conf_active_max = 0; static int32_t in_logger = QB_FALSE; static int32_t logger_inited = QB_FALSE; static pthread_rwlock_t _listlock; static qb_log_filter_fn _custom_filter_fn = NULL; static QB_LIST_DECLARE(dlnames); static QB_LIST_DECLARE(tags_head); static QB_LIST_DECLARE(callsite_sections); struct dlname { char *dln_name; struct qb_list_head list; }; struct callsite_section { struct qb_log_callsite *start; struct qb_log_callsite *stop; struct qb_list_head list; }; static int32_t _log_target_enable(struct qb_log_target *t); static void _log_target_disable(struct qb_log_target *t); static void _log_filter_apply(struct callsite_section *sect, uint32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char *text, regex_t *regex, uint8_t high_priority, uint8_t low_priority); static void _log_filter_apply_to_cs(struct qb_log_callsite *cs, uint32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char *text, regex_t *regex, uint8_t high_priority, uint8_t low_priority); /* deprecated method of getting internal log messages */ static qb_util_log_fn_t old_internal_log_fn = NULL; void qb_util_set_log_function(qb_util_log_fn_t fn) { old_internal_log_fn = fn; } static void _log_free_filter(struct qb_log_filter *flt) { if (flt->regex) { regfree(flt->regex); } free(flt->regex); free(flt->text); free(flt); } static int32_t _cs_matches_filter_(struct qb_log_callsite *cs, enum qb_log_filter_type type, const char *text, regex_t *regex, uint8_t high_priority, uint8_t low_priority) { int32_t match = QB_FALSE; const char *offset = NULL; const char *next = NULL; if (cs->priority > low_priority || cs->priority < high_priority) { return QB_FALSE; } if (strcmp(text, "*") == 0) { return QB_TRUE; } switch (type) { case QB_LOG_FILTER_FILE: case QB_LOG_FILTER_FUNCTION: next = text; do { char token[500]; offset = next; next = strchrnul(offset, ','); snprintf(token, 499, "%.*s", (int)(next - offset), offset); if (type == QB_LOG_FILTER_FILE) { match = (strcmp(cs->filename, token) == 0) ? 1 : 0; } else { match = (strcmp(cs->function, token) == 0) ? 1 : 0; } if (!match && next[0] != 0) { next++; } } while (match == QB_FALSE && next != NULL && next[0] != 0); break; case QB_LOG_FILTER_FILE_REGEX: next = next ? next : cs->filename; case QB_LOG_FILTER_FUNCTION_REGEX: next = next ? next : cs->function; case QB_LOG_FILTER_FORMAT_REGEX: next = next ? next : cs->format; if (regex == NULL) { return QB_FALSE; } match = regexec(regex, next, 0, NULL, 0); if (match == 0) { match = QB_TRUE; } else { match = QB_FALSE; } break; case QB_LOG_FILTER_FORMAT: if (strstr(cs->format, text)) { match = QB_TRUE; } break; } return match; } /** * @internal * @brief Format a log message into a string buffer * * @param[out] str Destination buffer to contain formatted string * @param[in] cs Callsite containing format to use * @param[in] ap Variable arguments for format */ #ifdef HAVE_GCC_SUGGEST_ATTRIBUTE_FORMAT /* suppress suggestion that we currently can do nothing better about as the format specification is hidden in cs argument */ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wsuggest-attribute=format" #endif static inline void cs_format(char *str, struct qb_log_callsite *cs, va_list ap) { va_list ap_copy; int len; va_copy(ap_copy, ap); len = vsnprintf(str, QB_LOG_MAX_LEN, cs->format, ap_copy); va_end(ap_copy); if (len > QB_LOG_MAX_LEN) { len = QB_LOG_MAX_LEN; } if (str[len - 1] == '\n') { str[len - 1] = '\0'; } } #ifdef HAVE_GCC_SUGGEST_ATTRIBUTE_FORMAT #pragma GCC diagnostic pop #endif void qb_log_real_va_(struct qb_log_callsite *cs, va_list ap) { int32_t found_threaded = QB_FALSE; struct qb_log_target *t; struct timespec tv; - int32_t pos; + enum qb_log_target_slot pos; int32_t formatted = QB_FALSE; char buf[QB_LOG_MAX_LEN]; char *str = buf; va_list ap_copy; if (in_logger || cs == NULL) { return; } in_logger = QB_TRUE; if (old_internal_log_fn && qb_bit_is_set(cs->tags, QB_LOG_TAG_LIBQB_MSG_BIT)) { if (formatted == QB_FALSE) { cs_format(str, cs, ap); formatted = QB_TRUE; } qb_do_extended(str, QB_TRUE, old_internal_log_fn(cs->filename, cs->lineno, cs->priority, str)); } qb_util_timespec_from_epoch_get(&tv); /* * 1 if we can find a threaded target that needs this log then post it * 2 foreach non-threaded target call it's logger function */ - for (pos = 0; pos <= conf_active_max; pos++) { + for (pos = QB_LOG_TARGET_START; pos <= conf_active_max; pos++) { t = &conf[pos]; if ((t->state == QB_LOG_STATE_ENABLED) && qb_bit_is_set(cs->targets, pos)) { if (t->threaded) { if (!found_threaded) { found_threaded = QB_TRUE; if (formatted == QB_FALSE) { cs_format(str, cs, ap); formatted = QB_TRUE; } } } else if (t->vlogger) { va_copy(ap_copy, ap); t->vlogger(t->pos, cs, tv.tv_sec, ap_copy); va_end(ap_copy); } else if (t->logger) { if (formatted == QB_FALSE) { cs_format(str, cs, ap); formatted = QB_TRUE; } qb_do_extended(str, t->extended, t->logger(t->pos, cs, tv.tv_sec, str)); } } } if (found_threaded) { qb_log_thread_log_post(cs, tv.tv_sec, str); } in_logger = QB_FALSE; } void qb_log_real_(struct qb_log_callsite *cs, ...) { va_list ap; va_start(ap, cs); qb_log_real_va_(cs, ap); va_end(ap); } void qb_log_thread_log_write(struct qb_log_callsite *cs, time_t timestamp, const char *buffer) { struct qb_log_target *t; - int32_t pos; + enum qb_log_target_slot pos; - for (pos = 0; pos <= conf_active_max; pos++) { + for (pos = QB_LOG_TARGET_START; pos <= conf_active_max; pos++) { t = &conf[pos]; if ((t->state == QB_LOG_STATE_ENABLED) && t->threaded && qb_bit_is_set(cs->targets, t->pos)) { qb_do_extended(buffer, t->extended, t->logger(t->pos, cs, timestamp, buffer)); } } } struct qb_log_callsite* qb_log_callsite_get(const char *function, const char *filename, const char *format, uint8_t priority, uint32_t lineno, uint32_t tags) { struct qb_log_target *t; struct qb_log_filter *flt; struct qb_log_callsite *cs; int32_t new_dcs = QB_FALSE; struct qb_list_head *f_item; - int32_t pos; + enum qb_log_target_slot pos; if (!logger_inited) { return NULL; } cs = qb_log_dcs_get(&new_dcs, function, filename, format, priority, lineno, tags); if (cs == NULL) { return NULL; } if (new_dcs) { pthread_rwlock_rdlock(&_listlock); - for (pos = 0; pos <= conf_active_max; pos++) { + for (pos = QB_LOG_TARGET_START; pos <= conf_active_max; pos++) { t = &conf[pos]; if (t->state != QB_LOG_STATE_ENABLED) { continue; } qb_list_for_each(f_item, &t->filter_head) { flt = qb_list_entry(f_item, struct qb_log_filter, list); _log_filter_apply_to_cs(cs, t->pos, flt->conf, flt->type, flt->text, flt->regex, flt->high_priority, flt->low_priority); } } if (tags == 0) { qb_list_for_each(f_item, &tags_head) { flt = qb_list_entry(f_item, struct qb_log_filter, list); _log_filter_apply_to_cs(cs, flt->new_value, flt->conf, flt->type, flt->text, flt->regex, flt->high_priority, flt->low_priority); } } else { cs->tags = tags; } if (_custom_filter_fn) { _custom_filter_fn(cs); } pthread_rwlock_unlock(&_listlock); } else if (cs->tags != tags) { cs->tags = tags; if (_custom_filter_fn) { _custom_filter_fn(cs); } } return cs; } void qb_log_from_external_source_va(const char *function, const char *filename, const char *format, uint8_t priority, uint32_t lineno, uint32_t tags, va_list ap) { struct qb_log_callsite *cs; if (!logger_inited) { return; } cs = qb_log_callsite_get(function, filename, format, priority, lineno, tags); qb_log_real_va_(cs, ap); } void qb_log_from_external_source(const char *function, const char *filename, const char *format, uint8_t priority, uint32_t lineno, uint32_t tags, ...) { struct qb_log_callsite *cs; va_list ap; if (!logger_inited) { return; } cs = qb_log_callsite_get(function, filename, format, priority, lineno, tags); va_start(ap, tags); qb_log_real_va_(cs, ap); va_end(ap); } int32_t qb_log_callsites_register(struct qb_log_callsite *_start, struct qb_log_callsite *_stop) { struct callsite_section *sect; struct qb_log_callsite *cs; struct qb_log_target *t; struct qb_log_filter *flt; - int32_t pos; + enum qb_log_target_slot pos; if (_start == NULL || _stop == NULL) { return -EINVAL; } pthread_rwlock_rdlock(&_listlock); qb_list_for_each_entry(sect, &callsite_sections, list) { if (sect->start == _start || sect->stop == _stop) { pthread_rwlock_unlock(&_listlock); return -EEXIST; } } pthread_rwlock_unlock(&_listlock); sect = calloc(1, sizeof(struct callsite_section)); if (sect == NULL) { return -ENOMEM; } sect->start = _start; sect->stop = _stop; qb_list_init(§->list); pthread_rwlock_wrlock(&_listlock); qb_list_add(§->list, &callsite_sections); /* * Now apply the filters on these new callsites */ - for (pos = 0; pos <= conf_active_max; pos++) { + for (pos = QB_LOG_TARGET_START; pos <= conf_active_max; pos++) { t = &conf[pos]; if (t->state != QB_LOG_STATE_ENABLED) { continue; } qb_list_for_each_entry(flt, &t->filter_head, list) { _log_filter_apply(sect, t->pos, flt->conf, flt->type, flt->text, flt->regex, flt->high_priority, flt->low_priority); } } qb_list_for_each_entry(flt, &tags_head, list) { _log_filter_apply(sect, flt->new_value, flt->conf, flt->type, flt->text, flt->regex, flt->high_priority, flt->low_priority); } pthread_rwlock_unlock(&_listlock); if (_custom_filter_fn) { for (cs = sect->start; cs < sect->stop; cs++) { if (cs->lineno > 0) { _custom_filter_fn(cs); } } } /* qb_log_callsites_dump_sect(sect); */ return 0; } static void qb_log_callsites_dump_sect(struct callsite_section *sect) { struct qb_log_callsite *cs; printf(" start %p - stop %p\n", sect->start, sect->stop); printf("filename lineno targets tags\n"); for (cs = sect->start; cs < sect->stop; cs++) { if (cs->lineno > 0) { printf("%12s %6d %16d %16d\n", cs->filename, cs->lineno, cs->targets, cs->tags); } } } void qb_log_callsites_dump(void) { struct callsite_section *sect; int32_t l; pthread_rwlock_rdlock(&_listlock); l = qb_list_length(&callsite_sections); printf("Callsite Database [%d]\n", l); printf("---------------------\n"); qb_list_for_each_entry(sect, &callsite_sections, list) { qb_log_callsites_dump_sect(sect); } pthread_rwlock_unlock(&_listlock); } static int32_t _log_filter_exists(struct qb_list_head *list_head, enum qb_log_filter_type type, const char *text, uint8_t high_priority, uint8_t low_priority, uint32_t new_value) { struct qb_log_filter *flt; qb_list_for_each_entry(flt, list_head, list) { if (flt->type == type && flt->high_priority == high_priority && flt->low_priority == low_priority && flt->new_value == new_value && strcmp(flt->text, text) == 0) { return QB_TRUE; } } return QB_FALSE; } static int32_t _log_filter_store(uint32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char *text, uint8_t high_priority, uint8_t low_priority, struct qb_log_filter **new) { struct qb_log_filter *flt; struct qb_list_head *iter; struct qb_list_head *next; struct qb_list_head *list_head; switch (c) { case QB_LOG_FILTER_ADD: case QB_LOG_FILTER_REMOVE: case QB_LOG_FILTER_CLEAR_ALL: list_head = &conf[t].filter_head; break; case QB_LOG_TAG_SET: case QB_LOG_TAG_CLEAR: case QB_LOG_TAG_CLEAR_ALL: list_head = &tags_head; break; default: return -ENOSYS; } if (c == QB_LOG_FILTER_ADD || c == QB_LOG_TAG_SET) { if (text == NULL) { return -EINVAL; } if (_log_filter_exists(list_head, type, text, high_priority, low_priority, t)) { return -EEXIST; } flt = calloc(1, sizeof(struct qb_log_filter)); if (flt == NULL) { return -ENOMEM; } qb_list_init(&flt->list); flt->conf = c; flt->type = type; flt->text = strdup(text); if (flt->text == NULL) { _log_free_filter(flt); return -ENOMEM; } if (type == QB_LOG_FILTER_FUNCTION_REGEX || type == QB_LOG_FILTER_FILE_REGEX || type == QB_LOG_FILTER_FORMAT_REGEX) { int res; flt->regex = calloc(1, sizeof(regex_t)); if (flt->regex == NULL) { _log_free_filter(flt); return -ENOMEM; } res = regcomp(flt->regex, flt->text, 0); if (res) { _log_free_filter(flt); return -EINVAL; } } flt->high_priority = high_priority; flt->low_priority = low_priority; flt->new_value = t; qb_list_add_tail(&flt->list, list_head); if (new) { *new = flt; } } else if (c == QB_LOG_FILTER_REMOVE || c == QB_LOG_TAG_CLEAR) { qb_list_for_each_safe(iter, next, list_head) { flt = qb_list_entry(iter, struct qb_log_filter, list); if (flt->type == type && flt->low_priority <= low_priority && flt->high_priority >= high_priority && (strcmp(flt->text, text) == 0 || strcmp("*", text) == 0)) { qb_list_del(iter); _log_free_filter(flt); return 0; } } } else if (c == QB_LOG_FILTER_CLEAR_ALL || c == QB_LOG_TAG_CLEAR_ALL) { qb_list_for_each_safe(iter, next, list_head) { flt = qb_list_entry(iter, struct qb_log_filter, list); qb_list_del(iter); _log_free_filter(flt); } } return 0; } static void _log_filter_apply(struct callsite_section *sect, uint32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char *text, regex_t *regex, uint8_t high_priority, uint8_t low_priority) { struct qb_log_callsite *cs; for (cs = sect->start; cs < sect->stop; cs++) { if (cs->lineno > 0) { _log_filter_apply_to_cs(cs, t, c, type, text, regex, high_priority, low_priority); } } } /* #define _QB_FILTER_DEBUGGING_ 1 */ static void _log_filter_apply_to_cs(struct qb_log_callsite *cs, uint32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char *text, regex_t *regex, uint8_t high_priority, uint8_t low_priority) { if (c == QB_LOG_FILTER_CLEAR_ALL) { qb_bit_clear(cs->targets, t); return; } else if (c == QB_LOG_TAG_CLEAR_ALL) { cs->tags = 0; return; } if (_cs_matches_filter_(cs, type, text, regex, high_priority, low_priority)) { #ifdef _QB_FILTER_DEBUGGING_ uint32_t old_targets = cs->targets; uint32_t old_tags = cs->tags; #endif /* _QB_FILTER_DEBUGGING_ */ if (c == QB_LOG_FILTER_ADD) { qb_bit_set(cs->targets, t); } else if (c == QB_LOG_FILTER_REMOVE) { qb_bit_clear(cs->targets, t); } else if (c == QB_LOG_TAG_SET) { cs->tags = t; } else if (c == QB_LOG_TAG_CLEAR) { cs->tags = 0; } #ifdef _QB_FILTER_DEBUGGING_ if (old_targets != cs->targets) { printf("targets: %s:%u value(%d) %d -> %d\n", cs->filename, cs->lineno, t, old_targets, cs->targets); } if (old_tags != cs->tags) { printf("tags: %s:%u value(%d) %d -> %d\n", cs->filename, cs->lineno, t, old_tags, cs->tags); } #endif /* _QB_FILTER_DEBUGGING_ */ } } int32_t qb_log_filter_ctl2(int32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char * text, uint8_t high_priority, uint8_t low_priority) { struct qb_log_filter *new_flt = NULL; regex_t *regex = NULL; struct callsite_section *sect; int32_t rc; if (!logger_inited) { return -EINVAL; } if (c == QB_LOG_FILTER_ADD || c == QB_LOG_FILTER_CLEAR_ALL || c == QB_LOG_FILTER_REMOVE) { if (t < 0 || t >= QB_LOG_TARGET_MAX || conf[t].state == QB_LOG_STATE_UNUSED) { return -EBADF; } } if (text == NULL || low_priority < high_priority || type > QB_LOG_FILTER_FORMAT_REGEX || c > QB_LOG_TAG_CLEAR_ALL) { return -EINVAL; } pthread_rwlock_rdlock(&_listlock); rc = _log_filter_store(t, c, type, text, high_priority, low_priority, &new_flt); if (rc < 0) { pthread_rwlock_unlock(&_listlock); return rc; } if (new_flt && new_flt->regex) { regex = new_flt->regex; } qb_list_for_each_entry(sect, &callsite_sections, list) { _log_filter_apply(sect, t, c, type, text, regex, high_priority, low_priority); } pthread_rwlock_unlock(&_listlock); return 0; } int32_t qb_log_filter_fn_set(qb_log_filter_fn fn) { struct callsite_section *sect; struct qb_log_callsite *cs; if (!logger_inited) { return -EINVAL; } _custom_filter_fn = fn; if (_custom_filter_fn == NULL) { return 0; } qb_list_for_each_entry(sect, &callsite_sections, list) { for (cs = sect->start; cs < sect->stop; cs++) { if (cs->lineno > 0) { _custom_filter_fn(cs); } } } return 0; } int32_t qb_log_filter_ctl(int32_t t, enum qb_log_filter_conf c, enum qb_log_filter_type type, const char *text, uint8_t priority) { return qb_log_filter_ctl2(t, c, type, text, LOG_EMERG, priority); } #ifdef QB_HAVE_ATTRIBUTE_SECTION /* Some platforms (eg. FreeBSD 10+) don't support calling dlopen() from * within a dl_iterate_phdr() callback; so save all of the dlpi_names to * a list and iterate over them afterwards. */ static int32_t _log_so_walk_callback(struct dl_phdr_info *info, size_t size, void *data) { struct dlname *dlname; if (strlen(info->dlpi_name) > 0) { dlname = calloc(1, sizeof(struct dlname)); if (!dlname) return 0; dlname->dln_name = strdup(info->dlpi_name); qb_list_add_tail(&dlname->list, &dlnames); } return 0; } static void _log_so_walk_dlnames(void) { struct dlname *dlname; struct qb_list_head *iter; struct qb_list_head *next; void *handle; void *start; void *stop; const char *error; qb_list_for_each_safe(iter, next, &dlnames) { dlname = qb_list_entry(iter, struct dlname, list); handle = dlopen(dlname->dln_name, RTLD_LAZY); error = dlerror(); if (!handle || error) { qb_log(LOG_ERR, "%s", error); goto done; } start = dlsym(handle, "__start___verbose"); error = dlerror(); if (error) { goto done; } stop = dlsym(handle, "__stop___verbose"); error = dlerror(); if (error) { goto done; } else { qb_log_callsites_register(start, stop); } done: if (handle) dlclose(handle); qb_list_del(iter); if (dlname->dln_name) free(dlname->dln_name); free(dlname); } } #endif /* QB_HAVE_ATTRIBUTE_SECTION */ static void _log_target_state_set(struct qb_log_target *t, enum qb_log_target_state s) { - int32_t i; + enum qb_log_target_slot i; int32_t a_set = QB_FALSE; int32_t u_set = QB_FALSE; t->state = s; - for (i = 31; i >= 0; i--) { - if (!a_set && conf[i].state == QB_LOG_STATE_ENABLED) { + for (i = QB_LOG_TARGET_MAX; i > QB_LOG_TARGET_START; i--) { + if (!a_set && conf[i-1].state == QB_LOG_STATE_ENABLED) { a_set = QB_TRUE; - conf_active_max = i; + conf_active_max = i-1; } - if (!u_set && conf[i].state != QB_LOG_STATE_UNUSED) { + if (!u_set && conf[i-1].state != QB_LOG_STATE_UNUSED) { u_set = QB_TRUE; } } } void qb_log_init(const char *name, int32_t facility, uint8_t priority) { int32_t l; enum qb_log_target_slot i; l = pthread_rwlock_init(&_listlock, NULL); assert(l == 0); qb_log_format_init(); for (i = QB_LOG_TARGET_START; i < QB_LOG_TARGET_MAX; i++) { conf[i].pos = i; conf[i].debug = QB_FALSE; conf[i].file_sync = QB_FALSE; conf[i].extended = QB_TRUE; conf[i].state = QB_LOG_STATE_UNUSED; (void)strlcpy(conf[i].name, name, PATH_MAX); conf[i].facility = facility; qb_list_init(&conf[i].filter_head); } qb_log_dcs_init(); #ifdef QB_HAVE_ATTRIBUTE_SECTION qb_log_callsites_register(__start___verbose, __stop___verbose); dl_iterate_phdr(_log_so_walk_callback, NULL); _log_so_walk_dlnames(); #endif /* QB_HAVE_ATTRIBUTE_SECTION */ for (i = QB_LOG_TARGET_STATIC_START; i < QB_LOG_TARGET_STATIC_MAX; i++) conf[i].state = QB_LOG_STATE_DISABLED; logger_inited = QB_TRUE; (void)qb_log_syslog_open(&conf[QB_LOG_SYSLOG]); _log_target_state_set(&conf[QB_LOG_SYSLOG], QB_LOG_STATE_ENABLED); (void)qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_ADD, QB_LOG_FILTER_FILE, "*", priority); } void qb_log_fini(void) { struct qb_log_target *t; struct qb_log_filter *flt; struct callsite_section *s; struct qb_list_head *iter; struct qb_list_head *iter2; struct qb_list_head *next; struct qb_list_head *next2; - int32_t pos; + enum qb_log_target_slot pos; if (!logger_inited) { return; } logger_inited = QB_FALSE; qb_log_thread_stop(); pthread_rwlock_destroy(&_listlock); - for (pos = 0; pos <= conf_active_max; pos++) { + for (pos = QB_LOG_TARGET_START; pos <= conf_active_max; pos++) { t = &conf[pos]; _log_target_disable(t); qb_list_for_each_safe(iter2, next2, &t->filter_head) { flt = qb_list_entry(iter2, struct qb_log_filter, list); qb_list_del(iter2); _log_free_filter(flt); } } qb_log_format_fini(); qb_log_dcs_fini(); qb_list_for_each_safe(iter, next, &callsite_sections) { s = qb_list_entry(iter, struct callsite_section, list); qb_list_del(iter); free(s); } qb_list_for_each_safe(iter, next, &tags_head) { flt = qb_list_entry(iter, struct qb_log_filter, list); qb_list_del(iter); _log_free_filter(flt); } } struct qb_log_target * qb_log_target_alloc(void) { enum qb_log_target_slot i; for (i = QB_LOG_TARGET_START; i < QB_LOG_TARGET_MAX; i++) { if (conf[i].state == QB_LOG_STATE_UNUSED) { _log_target_state_set(&conf[i], QB_LOG_STATE_DISABLED); return &conf[i]; } } return NULL; } void qb_log_target_free(struct qb_log_target *t) { (void)qb_log_filter_ctl(t->pos, QB_LOG_FILTER_CLEAR_ALL, QB_LOG_FILTER_FILE, NULL, 0); t->debug = QB_FALSE; t->filename[0] = '\0'; qb_log_format_set(t->pos, NULL); _log_target_state_set(t, QB_LOG_STATE_UNUSED); } struct qb_log_target * qb_log_target_get(int32_t pos) { return &conf[pos]; } void * qb_log_target_user_data_get(int32_t t) { if (t < 0 || t >= QB_LOG_TARGET_MAX || conf[t].state == QB_LOG_STATE_UNUSED) { errno = -EBADF; return NULL; } return conf[t].instance; } int32_t qb_log_target_user_data_set(int32_t t, void *user_data) { if (!logger_inited) { return -EINVAL; } if (t < 0 || t >= QB_LOG_TARGET_MAX || conf[t].state == QB_LOG_STATE_UNUSED) { return -EBADF; } conf[t].instance = user_data; return 0; } int32_t qb_log_custom_open(qb_log_logger_fn log_fn, qb_log_close_fn close_fn, qb_log_reload_fn reload_fn, void *user_data) { struct qb_log_target *t; t = qb_log_target_alloc(); if (t == NULL) { return -errno; } t->instance = user_data; snprintf(t->filename, PATH_MAX, "custom-%d", t->pos); t->logger = log_fn; t->vlogger = NULL; t->reload = reload_fn; t->close = close_fn; return t->pos; } void qb_log_custom_close(int32_t t) { struct qb_log_target *target; if (!logger_inited) { return; } if (t < 0 || t >= QB_LOG_TARGET_MAX || conf[t].state == QB_LOG_STATE_UNUSED) { return; } target = qb_log_target_get(t); if (target->close) { in_logger = QB_TRUE; target->close(t); in_logger = QB_FALSE; } qb_log_target_free(target); } static int32_t _log_target_enable(struct qb_log_target *t) { int32_t rc = 0; if (t->state == QB_LOG_STATE_ENABLED) { return 0; } if (t->pos == QB_LOG_STDERR || t->pos == QB_LOG_STDOUT) { rc = qb_log_stderr_open(t); } else if (t->pos == QB_LOG_SYSLOG) { rc = qb_log_syslog_open(t); } else if (t->pos == QB_LOG_BLACKBOX) { rc = qb_log_blackbox_open(t); } if (rc == 0) { _log_target_state_set(t, QB_LOG_STATE_ENABLED); } return rc; } static void _log_target_disable(struct qb_log_target *t) { if (t->state != QB_LOG_STATE_ENABLED) { return; } _log_target_state_set(t, QB_LOG_STATE_DISABLED); if (t->close) { in_logger = QB_TRUE; t->close(t->pos); in_logger = QB_FALSE; } } int32_t qb_log_ctl(int32_t t, enum qb_log_conf c, int32_t arg) { int32_t rc = 0; int32_t need_reload = QB_FALSE; if (!logger_inited) { return -EINVAL; } if (t < 0 || t >= QB_LOG_TARGET_MAX || conf[t].state == QB_LOG_STATE_UNUSED) { return -EBADF; } switch (c) { case QB_LOG_CONF_ENABLED: if (arg) { rc = _log_target_enable(&conf[t]); } else { _log_target_disable(&conf[t]); } break; case QB_LOG_CONF_STATE_GET: rc = conf[t].state; break; case QB_LOG_CONF_FACILITY: conf[t].facility = arg; if (t == QB_LOG_SYSLOG) { need_reload = QB_TRUE; } break; case QB_LOG_CONF_FILE_SYNC: conf[t].file_sync = arg; break; case QB_LOG_CONF_PRIORITY_BUMP: conf[t].priority_bump = arg; break; case QB_LOG_CONF_SIZE: if (t == QB_LOG_BLACKBOX) { if (arg <= 0) { return -EINVAL; } conf[t].size = arg; need_reload = QB_TRUE; } else { return -ENOSYS; } break; case QB_LOG_CONF_THREADED: conf[t].threaded = arg; break; case QB_LOG_CONF_EXTENDED: conf[t].extended = arg; break; default: rc = -EINVAL; } if (rc == 0 && need_reload && conf[t].reload) { in_logger = QB_TRUE; conf[t].reload(t); in_logger = QB_FALSE; } return rc; }