X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Flist_triggers.c;fp=src%2Fbin%2Flttng%2Fcommands%2Flist_triggers.c;h=89296c7044d374ca82bf2988bdfcfdc391a7f558;hp=0000000000000000000000000000000000000000;hb=1831ae68b70dece8e9b847081526495adbbf05e5;hpb=25357057de5ae4dd2a572e8f9b893c1b90cbd60a

diff --git a/src/bin/lttng/commands/list_triggers.c b/src/bin/lttng/commands/list_triggers.c
new file mode 100644
index 000000000..89296c704
--- /dev/null
+++ b/src/bin/lttng/commands/list_triggers.c
@@ -0,0 +1,541 @@
+#include <stdio.h>
+
+#include "../command.h"
+
+#include "common/argpar/argpar.h"
+#include "common/mi-lttng.h"
+#include "lttng/condition/condition-internal.h"
+#include "lttng/condition/event-rule.h"
+#include "lttng/domain-internal.h"
+#include "lttng/event-rule/event-rule-internal.h"
+#include "lttng/event-rule/kprobe.h"
+#include "lttng/event-rule/kprobe-internal.h"
+#include "lttng/event-rule/syscall.h"
+#include "lttng/event-rule/tracepoint.h"
+#include "lttng/event-rule/uprobe.h"
+#include "lttng/trigger/trigger-internal.h"
+
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-list-trigger.1.h>
+;
+#endif
+
+enum {
+	OPT_HELP,
+	OPT_LIST_OPTIONS,
+};
+
+static const
+struct argpar_opt_descr list_trigger_options[] = {
+	{ OPT_HELP, 'h', "help", false },
+	{ OPT_LIST_OPTIONS, '\0', "list-options", false },
+	ARGPAR_OPT_DESCR_SENTINEL,
+};
+
+static
+void print_event_rule_tracepoint(const struct lttng_event_rule *event_rule)
+{
+	enum lttng_event_rule_status event_rule_status;
+	enum lttng_domain_type domain_type;
+	const char *pattern;
+	const char *filter;
+	int loglevel;
+	unsigned int exclusions_count;
+	int i;
+
+	event_rule_status = lttng_event_rule_tracepoint_get_pattern(
+		event_rule, &pattern);
+	assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+
+	event_rule_status = lttng_event_rule_tracepoint_get_domain_type(
+		event_rule, &domain_type);
+	assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+
+	printf("    rule: %s (type: tracepoint, domain: %s", pattern,
+		lttng_domain_type_str(domain_type));
+
+	event_rule_status = lttng_event_rule_tracepoint_get_filter(
+		event_rule, &filter);
+	if (event_rule_status == LTTNG_EVENT_RULE_STATUS_OK) {
+		printf(", filter: %s", filter);
+	} else {
+		assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_UNSET);
+	}
+
+	event_rule_status = lttng_event_rule_tracepoint_get_loglevel(
+		event_rule, &loglevel);
+	if (event_rule_status == LTTNG_EVENT_RULE_STATUS_OK) {
+		enum lttng_loglevel_type loglevel_type;
+		const char *loglevel_op;
+
+		event_rule_status = lttng_event_rule_tracepoint_get_loglevel_type(
+			event_rule, &loglevel_type);
+		assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+		assert(loglevel_type == LTTNG_EVENT_LOGLEVEL_RANGE ||
+			loglevel_type == LTTNG_EVENT_LOGLEVEL_SINGLE);
+
+		loglevel_op = (loglevel_type == LTTNG_EVENT_LOGLEVEL_RANGE ? "<=" : "==");
+
+		printf(", log level %s %s", loglevel_op,
+			mi_lttng_loglevel_string(loglevel, domain_type));
+	} else {
+		assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_UNSET);
+	}
+
+	event_rule_status = lttng_event_rule_tracepoint_get_exclusions_count(
+		event_rule, &exclusions_count);
+	assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+	if (exclusions_count > 0) {
+		printf(", exclusions: ");
+		for (i = 0; i < exclusions_count; i++) {
+			const char *exclusion;
+
+			event_rule_status = lttng_event_rule_tracepoint_get_exclusion_at_index(
+				event_rule, i, &exclusion);
+			assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+
+			printf("%s%s", i > 0 ? "," : "", exclusion);
+		}
+	}
+
+
+	printf(")\n");
+}
+
+static
+void print_event_rule_kprobe(const struct lttng_event_rule *event_rule)
+{
+	enum lttng_event_rule_status event_rule_status;
+	const char *name, *symbol_name;
+	uint64_t offset;
+
+	event_rule_status = lttng_event_rule_kprobe_get_name(event_rule, &name);
+	if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+		fprintf(stderr, "Failed to get kprobe event rule's name.\n");
+		goto end;
+	}
+
+	assert(lttng_event_rule_get_type(event_rule) == LTTNG_EVENT_RULE_TYPE_KPROBE);
+
+	printf("    rule: %s (type: probe, location: ", name);
+
+	// FIXME: When the location has been specified by address, this field
+	// contains the address as a string.  The only downside is that we are
+	// missing a `0x` prefix.
+	symbol_name = lttng_event_rule_kprobe_get_symbol_name(event_rule);
+	printf("%s", symbol_name);
+
+	offset = lttng_event_rule_kprobe_get_offset(event_rule);
+	if (offset > 0) {
+		printf("+0x%" PRIx64, offset);
+	}
+
+	printf(")\n");
+
+end:
+	return;
+}
+
+static
+void print_event_rule_uprobe(const struct lttng_event_rule *event_rule)
+{
+	enum lttng_event_rule_status event_rule_status;
+	const char *name;
+	const struct lttng_userspace_probe_location *location;
+	enum lttng_userspace_probe_location_type userspace_probe_location_type;
+
+	assert(lttng_event_rule_get_type(event_rule) == LTTNG_EVENT_RULE_TYPE_UPROBE);
+
+	event_rule_status = lttng_event_rule_uprobe_get_name(event_rule, &name);
+	if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+		fprintf(stderr, "Failed to get uprobe event rule's name.\n");
+		goto end;
+	}
+
+	event_rule_status = lttng_event_rule_uprobe_get_location(event_rule, &location);
+	if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+		fprintf(stderr, "Failed to get uprobe event rule's location.\n");
+		goto end;
+	}
+
+	printf("    rule: %s (type: userspace probe, location: ", name);
+
+	userspace_probe_location_type =
+		lttng_userspace_probe_location_get_type(location);
+
+	switch (userspace_probe_location_type) {
+	case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION:
+	{
+		const char *binary_path, *function_name;
+
+		binary_path = lttng_userspace_probe_location_function_get_binary_path(location);
+		function_name = lttng_userspace_probe_location_function_get_function_name(location);
+
+		printf("%s:%s", binary_path, function_name);
+		break;
+	}
+
+	case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT:
+		printf("SDT not implemented yet");
+		break;
+
+	default:
+		abort();
+	}
+
+	printf(")\n");
+
+end:
+	return;
+}
+
+static
+void print_event_rule_syscall(const struct lttng_event_rule *event_rule)
+{
+	const char *pattern, *filter;
+	enum lttng_event_rule_status event_rule_status;
+
+	assert(lttng_event_rule_get_type(event_rule) == LTTNG_EVENT_RULE_TYPE_SYSCALL);
+
+	event_rule_status = lttng_event_rule_syscall_get_pattern(event_rule, &pattern);
+	assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK);
+
+	printf("  - rule: %s (type: syscall", pattern);
+
+	event_rule_status = lttng_event_rule_syscall_get_filter(
+		event_rule, &filter);
+	if (event_rule_status == LTTNG_EVENT_RULE_STATUS_OK) {
+		printf(", filter: %s", filter);
+	} else {
+		assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_UNSET);
+	}
+
+	printf(")\n");
+}
+
+static
+void print_event_rule(const struct lttng_event_rule *event_rule)
+{
+	enum lttng_event_rule_type event_rule_type =
+		lttng_event_rule_get_type(event_rule);
+
+	switch (event_rule_type) {
+	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
+		print_event_rule_tracepoint(event_rule);
+		break;
+
+	case LTTNG_EVENT_RULE_TYPE_KPROBE:
+		print_event_rule_kprobe(event_rule);
+		break;
+
+	case LTTNG_EVENT_RULE_TYPE_UPROBE:
+		print_event_rule_uprobe(event_rule);
+		break;
+
+	case LTTNG_EVENT_RULE_TYPE_SYSCALL:
+		print_event_rule_syscall(event_rule);
+		break;
+
+	default:
+		abort();
+	}
+}
+
+static
+void print_condition_event_rule_hit(const struct lttng_condition *condition)
+{
+	const struct lttng_event_rule *event_rule;
+	enum lttng_condition_status condition_status;
+
+	condition_status =
+		lttng_condition_event_rule_get_rule(condition, &event_rule);
+	assert(condition_status == LTTNG_CONDITION_STATUS_OK);
+
+	print_event_rule(event_rule);
+}
+
+static
+void print_one_action(const struct lttng_action *action)
+{
+	enum lttng_action_type action_type;
+	enum lttng_action_status action_status;
+	const char *value;
+
+	action_type = lttng_action_get_type(action);
+	assert(action_type != LTTNG_ACTION_TYPE_GROUP);
+
+	switch (action_type) {
+	case LTTNG_ACTION_TYPE_NOTIFY:
+		printf("notify\n");
+		break;
+
+	case LTTNG_ACTION_TYPE_START_SESSION:
+		action_status = lttng_action_start_session_get_session_name(
+			action, &value);
+		assert(action_status == LTTNG_ACTION_STATUS_OK);
+		printf("start session `%s`\n", value);
+		break;
+
+	case LTTNG_ACTION_TYPE_STOP_SESSION:
+		action_status = lttng_action_stop_session_get_session_name(
+			action, &value);
+		assert(action_status == LTTNG_ACTION_STATUS_OK);
+		printf("stop session `%s`\n", value);
+		break;
+
+	case LTTNG_ACTION_TYPE_ROTATE_SESSION:
+		action_status = lttng_action_rotate_session_get_session_name(
+			action, &value);
+		assert(action_status == LTTNG_ACTION_STATUS_OK);
+		printf("rotate session `%s`\n", value);
+		break;
+
+	case LTTNG_ACTION_TYPE_SNAPSHOT_SESSION:
+	{
+		const struct lttng_snapshot_output *output;
+
+		action_status = lttng_action_snapshot_session_get_session_name(
+			action, &value);
+		assert(action_status == LTTNG_ACTION_STATUS_OK);
+		printf("snapshot session `%s`", value);
+
+		action_status = lttng_action_snapshot_session_get_output_const(
+			action, &output);
+		if (action_status == LTTNG_ACTION_STATUS_OK) {
+			const char *name;
+			uint64_t max_size;
+			const char *ctrl_url, *data_url;
+			bool starts_with_file, starts_with_net, starts_with_net6;
+
+			ctrl_url = lttng_snapshot_output_get_ctrl_url(output);
+			assert(ctrl_url && strlen(ctrl_url) > 0);
+
+			data_url = lttng_snapshot_output_get_data_url(output);
+			assert(data_url);
+
+			starts_with_file = strncmp(ctrl_url, "file://", strlen("file://")) == 0;
+			starts_with_net = strncmp(ctrl_url, "net://", strlen("net://")) == 0;
+			starts_with_net6 = strncmp(ctrl_url, "net6://", strlen("net6://")) == 0;
+
+			if (ctrl_url[0] == '/' || starts_with_file) {
+				if (starts_with_file) {
+					ctrl_url += strlen("file://");
+				}
+
+				printf(", path: %s", ctrl_url);
+			} else if (starts_with_net || starts_with_net6) {
+				printf(", url: %s", ctrl_url);
+			} else {
+				assert(strlen(data_url) > 0);
+
+				printf(", control url: %s, data url: %s", ctrl_url, data_url);
+			}
+
+			name = lttng_snapshot_output_get_name(output);
+			assert(name);
+			if (strlen(name) > 0) {
+				printf(", name: %s", name);
+			}
+
+			max_size = lttng_snapshot_output_get_maxsize(output);
+			if (max_size != -1ULL) {
+				printf(", max size: %" PRIu64, max_size);
+			}
+		}
+
+		printf("\n");
+		break;
+	}
+
+	default:
+		abort();
+	}
+}
+
+static
+void print_one_trigger(const struct lttng_trigger *trigger)
+{
+	const struct lttng_condition *condition;
+	enum lttng_condition_type condition_type;
+	const struct lttng_action *action;
+	enum lttng_action_type action_type;
+	enum lttng_trigger_status trigger_status;
+	const char *name;
+	enum lttng_trigger_firing_policy_type policy_type;
+	unsigned long long threshold;
+
+	trigger_status = lttng_trigger_get_name(trigger, &name);
+	assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
+	printf("- id: %s\n", name);
+
+	trigger_status = lttng_trigger_get_firing_policy(trigger,
+			&policy_type, &threshold);
+	if (trigger_status != LTTNG_TRIGGER_STATUS_OK) {
+		fprintf(stderr, "Failed to get trigger's firing policy.\n");
+		goto end;
+	}
+
+	switch (policy_type) {
+	case LTTNG_TRIGGER_FIRE_EVERY_N:
+		if (threshold > 1) {
+			printf("  firing policy: after every %llu occurences\n", threshold);
+		}
+		break;
+
+	case LTTNG_TRIGGER_FIRE_ONCE_AFTER_N:
+		printf("  firing policy: once after %llu occurences\n", threshold);
+		break;
+
+	default:
+		abort();
+	}
+
+	condition = lttng_trigger_get_const_condition(trigger);
+	condition_type = lttng_condition_get_type(condition);
+	printf("  condition: %s\n",
+		lttng_condition_type_str(condition_type));
+
+	switch (condition_type) {
+	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
+		print_condition_event_rule_hit(condition);
+		break;
+
+	default:
+		printf("  (condition type not handled in %s)\n", __func__);
+		break;
+	}
+
+	action = lttng_trigger_get_const_action(trigger);
+	action_type = lttng_action_get_type(action);
+	if (action_type == LTTNG_ACTION_TYPE_GROUP) {
+		enum lttng_action_status action_status;
+		unsigned int count, i;
+
+		printf("  actions:\n");
+
+		action_status = lttng_action_group_get_count(action, &count);
+		assert(action_status == LTTNG_ACTION_STATUS_OK);
+
+		for (i = 0; i < count; i++) {
+			const struct lttng_action *subaction =
+				lttng_action_group_get_at_index_const(action, i);
+
+			printf("    ");
+			print_one_action(subaction);
+		}
+	} else {
+		printf(" action:");
+		print_one_action(action);
+	}
+
+end:
+	return;
+}
+
+static
+int compare_triggers_by_name(const void *a, const void *b)
+{
+	const struct lttng_trigger *trigger_a = *((const struct lttng_trigger **) a);
+	const struct lttng_trigger *trigger_b = *((const struct lttng_trigger **) b);
+	const char *name_a, *name_b;
+	enum lttng_trigger_status trigger_status;
+
+	trigger_status = lttng_trigger_get_name(trigger_a, &name_a);
+	assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
+
+	trigger_status = lttng_trigger_get_name(trigger_b, &name_b);
+	assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
+
+	return strcmp(name_a, name_b);
+}
+
+int cmd_list_triggers(int argc, const char **argv)
+{
+	int ret;
+	struct argpar_parse_ret argpar_parse_ret = { 0 };
+	struct lttng_triggers *triggers = NULL;
+	int i;
+	const struct lttng_trigger **sorted_triggers = NULL;
+	enum lttng_trigger_status trigger_status;
+	unsigned int num_triggers;
+
+	argpar_parse_ret = argpar_parse(argc - 1, argv + 1,
+		list_trigger_options, true);
+	if (!argpar_parse_ret.items) {
+		fprintf(stderr, "Error: %s\n", argpar_parse_ret.error);
+		goto error;
+	}
+
+	for (i = 0; i < argpar_parse_ret.items->n_items; i++) {
+		struct argpar_item *item = argpar_parse_ret.items->items[i];
+
+		if (item->type == ARGPAR_ITEM_TYPE_OPT) {
+			struct argpar_item_opt *item_opt =
+				(struct argpar_item_opt *) item;
+
+			switch (item_opt->descr->id) {
+			case OPT_HELP:
+				SHOW_HELP();
+				ret = 0;
+				goto end;
+
+			case OPT_LIST_OPTIONS:
+				list_cmd_options_argpar(stdout,
+					list_trigger_options);
+				ret = 0;
+				goto end;
+
+			default:
+				abort();
+			}
+
+		} else {
+			struct argpar_item_non_opt *item_non_opt =
+				(struct argpar_item_non_opt *) item;
+
+			fprintf(stderr, "Unexpected argument: %s\n", item_non_opt->arg);
+		}
+	}
+
+	ret = lttng_list_triggers(&triggers);
+	if (ret != 0) {
+		fprintf(stderr, "Error listing triggers: %s.\n",
+			lttng_strerror(ret));
+		goto error;
+	}
+
+	trigger_status = lttng_triggers_get_count(triggers, &num_triggers);
+	if (trigger_status != LTTNG_TRIGGER_STATUS_OK) {
+		fprintf(stderr, "Failed to get trigger count.\n");
+		goto error;
+	}
+
+	sorted_triggers = calloc(num_triggers, sizeof(struct lttng_trigger *));
+	if (!sorted_triggers) {
+		fprintf(stderr, "Failed to allocate array of struct lttng_trigger *.\n");
+		goto error;
+	}
+
+	for (i = 0; i < num_triggers; i++) {
+		sorted_triggers[i] = lttng_triggers_get_at_index(triggers, i);
+	}
+
+	qsort(sorted_triggers, num_triggers, sizeof(struct lttng_trigger *),
+		compare_triggers_by_name);
+
+	for (i = 0; i < num_triggers; i++) {
+		print_one_trigger(sorted_triggers[i]);
+	}
+
+	goto end;
+
+error:
+	ret = 1;
+
+end:
+	argpar_parse_ret_fini(&argpar_parse_ret);
+	lttng_triggers_destroy(triggers);
+
+	return ret;
+}