#include <common/payload.h>
#include <common/payload-view.h>
#include <common/runas.h>
+#include <common/hashtable/hashtable.h>
+#include <common/hashtable/utils.h>
#include <lttng/event-rule/event-rule-internal.h>
#include <lttng/event-rule/tracepoint-internal.h>
return tracepoint->internal_filter.bytecode;
}
-static struct lttng_event_exclusion *
+static enum lttng_event_rule_generate_exclusions_status
lttng_event_rule_tracepoint_generate_exclusions(
- const struct lttng_event_rule *rule)
+ const struct lttng_event_rule *rule,
+ struct lttng_event_exclusion **_exclusions)
{
- enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE;
- enum lttng_event_rule_status status;
- struct lttng_event_exclusion *local_exclusions = NULL;
- struct lttng_event_exclusion *ret_exclusions = NULL;
- unsigned int nb_exclusions = 0;
- unsigned int i;
+ unsigned int nb_exclusions = 0, i;
+ enum lttng_domain_type domain_type;
+ struct lttng_event_exclusion *exclusions;
+ enum lttng_event_rule_status event_rule_status;
+ enum lttng_event_rule_generate_exclusions_status ret_status;
- status = lttng_event_rule_tracepoint_get_domain_type(rule, &domain_type);
- assert(status == LTTNG_EVENT_RULE_STATUS_OK);
+ assert(_exclusions);
+
+ event_rule_status = lttng_event_rule_tracepoint_get_domain_type(
+ rule, &domain_type);
+ assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
switch (domain_type) {
case LTTNG_DOMAIN_KERNEL:
case LTTNG_DOMAIN_LOG4J:
case LTTNG_DOMAIN_PYTHON:
/* Not supported. */
- ret_exclusions = NULL;
+ exclusions = NULL;
+ ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE;
goto end;
case LTTNG_DOMAIN_UST:
/* Exclusions supported. */
break;
default:
+ /* Unknown domain. */
abort();
}
- status = lttng_event_rule_tracepoint_get_exclusions_count(
+ event_rule_status = lttng_event_rule_tracepoint_get_exclusions_count(
rule, &nb_exclusions);
- assert(status == LTTNG_EVENT_RULE_STATUS_OK);
+ assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
if (nb_exclusions == 0) {
/* Nothing to do. */
- ret_exclusions = NULL;
+ exclusions = NULL;
+ ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE;
goto end;
}
- local_exclusions = zmalloc(sizeof(struct lttng_event_exclusion) +
- (LTTNG_SYMBOL_NAME_LEN * nb_exclusions));
- if (!local_exclusions) {
+ exclusions = zmalloc(sizeof(struct lttng_event_exclusion) +
+ (LTTNG_SYMBOL_NAME_LEN * nb_exclusions));
+ if (!exclusions) {
PERROR("Failed to allocate exclusions buffer");
- ret_exclusions = NULL;
+ ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_OUT_OF_MEMORY;
goto end;
}
- local_exclusions->count = nb_exclusions;
+ exclusions->count = nb_exclusions;
for (i = 0; i < nb_exclusions; i++) {
- /* Truncation is already checked at the setter level. */
- const char *tmp;
-
- status = lttng_event_rule_tracepoint_get_exclusion_at_index(
- rule, i, &tmp);
- assert(status == LTTNG_EVENT_RULE_STATUS_OK);
- strncpy(local_exclusions->names[i], tmp, LTTNG_SYMBOL_NAME_LEN);
- local_exclusions->names[i][LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
+ int copy_ret;
+ const char *exclusion_str;
+
+ event_rule_status =
+ lttng_event_rule_tracepoint_get_exclusion_at_index(
+ rule, i, &exclusion_str);
+ assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+
+ copy_ret = lttng_strncpy(exclusions->names[i], exclusion_str,
+ LTTNG_SYMBOL_NAME_LEN);
+ if (copy_ret) {
+ free(exclusions);
+ exclusions = NULL;
+ ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_ERROR;
+ goto end;
+ }
}
- /* Pass ownership. */
- ret_exclusions = local_exclusions;
- local_exclusions = NULL;
+ ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_OK;
+
end:
- free(local_exclusions);
- return ret_exclusions;
+ *_exclusions = exclusions;
+ return ret_status;
}
static void destroy_lttng_exclusions_element(void *ptr)
free(ptr);
}
+static unsigned long lttng_event_rule_tracepoint_hash(
+ const struct lttng_event_rule *rule)
+{
+ unsigned long hash;
+ unsigned int i, exclusion_count;
+ enum lttng_event_rule_status status;
+ struct lttng_event_rule_tracepoint *tp_rule =
+ container_of(rule, typeof(*tp_rule), parent);
+
+ hash = hash_key_ulong((void *) LTTNG_EVENT_RULE_TYPE_TRACEPOINT,
+ lttng_ht_seed);
+ hash ^= hash_key_ulong((void *) tp_rule->domain, lttng_ht_seed);
+ hash ^= hash_key_str(tp_rule->pattern, lttng_ht_seed);
+
+ if (tp_rule->filter_expression) {
+ hash ^= hash_key_str(tp_rule->filter_expression, lttng_ht_seed);
+ }
+
+ hash ^= hash_key_ulong((void *) tp_rule->loglevel.type,
+ lttng_ht_seed);
+ if (tp_rule->loglevel.type != LTTNG_EVENT_LOGLEVEL_ALL) {
+ hash ^= hash_key_ulong(
+ (void *) (unsigned long) tp_rule->loglevel.value,
+ lttng_ht_seed);
+ }
+
+ status = lttng_event_rule_tracepoint_get_exclusions_count(rule,
+ &exclusion_count);
+ assert(status == LTTNG_EVENT_RULE_STATUS_OK);
+
+ for (i = 0; i < exclusion_count; i++) {
+ const char *exclusion;
+
+ status = lttng_event_rule_tracepoint_get_exclusion_at_index(
+ rule, i, &exclusion);
+ assert(status == LTTNG_EVENT_RULE_STATUS_OK);
+ hash ^= hash_key_str(exclusion, lttng_ht_seed);
+ }
+
+ return hash;
+}
+
struct lttng_event_rule *lttng_event_rule_tracepoint_create(
enum lttng_domain_type domain_type)
{
lttng_event_rule_tracepoint_get_internal_filter_bytecode;
tp_rule->parent.generate_exclusions =
lttng_event_rule_tracepoint_generate_exclusions;
+ tp_rule->parent.hash = lttng_event_rule_tracepoint_hash;
tp_rule->domain = domain_type;
tp_rule->loglevel.type = LTTNG_EVENT_LOGLEVEL_ALL;
projects / lttng-tools.git / blobdiff