[lttng-tools.git] / src / common / event-rule / event-rule.c

/*
 * Copyright (C) 2019 Jonathan Rajotte
 * <jonathan.rajotte-julien@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#include <assert.h>
#include <common/error.h>
#include <common/macros.h>
#include <common/payload.h>
#include <common/payload-view.h>
#include <common/hashtable/hashtable.h>
#include <common/hashtable/utils.h>
#include <lttng/event-rule/event-rule-internal.h>
#include <lttng/event-rule/kernel-kprobe-internal.h>
#include <lttng/event-rule/kernel-syscall-internal.h>
#include <lttng/event-rule/jul-logging-internal.h>
#include <lttng/event-rule/tracepoint-internal.h>
#include <lttng/event-rule/kernel-tracepoint-internal.h>
#include <lttng/event-rule/kernel-uprobe-internal.h>
#include <lttng/event-rule/user-tracepoint-internal.h>
#include <stdbool.h>

enum lttng_event_rule_type lttng_event_rule_get_type(
		const struct lttng_event_rule *event_rule)
{
	return event_rule ? event_rule->type : LTTNG_EVENT_RULE_TYPE_UNKNOWN;
}

LTTNG_HIDDEN
enum lttng_domain_type lttng_event_rule_get_domain_type(
		const struct lttng_event_rule *event_rule)
{
	enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE;

	switch (lttng_event_rule_get_type(event_rule)) {
	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
	{
		enum lttng_event_rule_status status;
		status = lttng_event_rule_tracepoint_get_domain_type(event_rule, &domain_type);
		assert(status == LTTNG_EVENT_RULE_STATUS_OK);
		break;
	}
	case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT:
		domain_type = LTTNG_DOMAIN_UST;
		break;
	case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING:
		domain_type = LTTNG_DOMAIN_JUL;
		break;
	case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL:
	case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE:
	case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION:
	case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE:
	case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT:
		domain_type = LTTNG_DOMAIN_KERNEL;
		break;
	case LTTNG_EVENT_RULE_TYPE_UNKNOWN:
		domain_type = LTTNG_DOMAIN_NONE;
		break;
	}

	return domain_type;
}

static void lttng_event_rule_release(struct urcu_ref *ref)
{
	struct lttng_event_rule *event_rule =
			container_of(ref, typeof(*event_rule), ref);

	assert(event_rule->destroy);
	event_rule->destroy(event_rule);
}

void lttng_event_rule_destroy(struct lttng_event_rule *event_rule)
{
	lttng_event_rule_put(event_rule);
}

LTTNG_HIDDEN
bool lttng_event_rule_validate(const struct lttng_event_rule *event_rule)
{
	bool valid;

	if (!event_rule) {
		valid = false;
		goto end;
	}

	if (!event_rule->validate) {
		/* Sub-class guarantees that it can never be invalid. */
		valid = true;
		goto end;
	}

	valid = event_rule->validate(event_rule);
end:
	return valid;
}

LTTNG_HIDDEN
int lttng_event_rule_serialize(const struct lttng_event_rule *event_rule,
		struct lttng_payload *payload)
{
	int ret;
	struct lttng_event_rule_comm event_rule_comm = {};

	if (!event_rule) {
		ret = -1;
		goto end;
	}

	event_rule_comm.event_rule_type = (int8_t) event_rule->type;

	ret = lttng_dynamic_buffer_append(
			&payload->buffer, &event_rule_comm, sizeof(event_rule_comm));
	if (ret) {
		goto end;
	}

	ret = event_rule->serialize(event_rule, payload);
	if (ret) {
		goto end;
	}
end:
	return ret;
}

LTTNG_HIDDEN
bool lttng_event_rule_is_equal(const struct lttng_event_rule *a,
		const struct lttng_event_rule *b)
{
	bool is_equal = false;

	if (!a || !b) {
		goto end;
	}

	if (a->type != b->type) {
		goto end;
	}

	if (a == b) {
		is_equal = true;
		goto end;
	}

	is_equal = a->equal ? a->equal(a, b) : true;
end:
	return is_equal;
}

LTTNG_HIDDEN
ssize_t lttng_event_rule_create_from_payload(
		struct lttng_payload_view *view,
		struct lttng_event_rule **event_rule)
{
	ssize_t ret, consumed = 0;
	event_rule_create_from_payload_cb create_from_payload = NULL;
	const struct lttng_event_rule_comm *event_rule_comm;
	const struct lttng_payload_view event_rule_comm_view =
			lttng_payload_view_from_view(
					view, 0, sizeof(*event_rule_comm));

	if (!view || !event_rule) {
		ret = -1;
		goto end;
	}

	if (!lttng_payload_view_is_valid(&event_rule_comm_view)) {
		ret = -1;
		goto end;
	}

	DBG("Deserializing event_rule from payload");
	event_rule_comm = (const struct lttng_event_rule_comm *) event_rule_comm_view.buffer.data;
	consumed += sizeof(*event_rule_comm);

	switch ((enum lttng_event_rule_type) event_rule_comm->event_rule_type) {
	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
		create_from_payload =
				lttng_event_rule_tracepoint_create_from_payload;
		break;
	case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE:
		create_from_payload = lttng_event_rule_kernel_kprobe_create_from_payload;
		break;
	case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION:
		/* TODO */
		break;
	case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE:
		create_from_payload = lttng_event_rule_kernel_uprobe_create_from_payload;
		break;
	case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL:
		create_from_payload =
				lttng_event_rule_kernel_syscall_create_from_payload;
		break;
	case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT:
		create_from_payload =
				lttng_event_rule_kernel_tracepoint_create_from_payload;
		break;
	case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT:
		create_from_payload =
				lttng_event_rule_user_tracepoint_create_from_payload;
		break;
	case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING:
		create_from_payload =
				lttng_event_rule_jul_logging_create_from_payload;
		break;
	default:
		ERR("Attempted to create event rule of unknown type (%i)",
				(int) event_rule_comm->event_rule_type);
		ret = -1;
		goto end;
	}

	assert(create_from_payload);

	{
		struct lttng_payload_view child_view =
				lttng_payload_view_from_view(
						view, consumed, -1);

		ret = create_from_payload(&child_view, event_rule);
		if (ret < 0) {
			goto end;
		}

		consumed += ret;
	}

	if (!lttng_event_rule_validate(*event_rule)) {
		ret = -1;
		goto end;
	}

	ret = consumed;
end:
	return ret;
}

LTTNG_HIDDEN
void lttng_event_rule_init(struct lttng_event_rule *event_rule,
		enum lttng_event_rule_type type)
{
	urcu_ref_init(&event_rule->ref);
	event_rule->type = type;
}

LTTNG_HIDDEN
bool lttng_event_rule_get(struct lttng_event_rule *event_rule)
{
	return urcu_ref_get_unless_zero(&event_rule->ref);
}

LTTNG_HIDDEN
void lttng_event_rule_put(struct lttng_event_rule *event_rule)
{
	if (!event_rule) {
		return;
	}

	assert(event_rule->ref.refcount);
	urcu_ref_put(&event_rule->ref, lttng_event_rule_release);
}

LTTNG_HIDDEN
enum lttng_error_code lttng_event_rule_generate_filter_bytecode(
		struct lttng_event_rule *rule,
		const struct lttng_credentials *creds)
{
	assert(rule->generate_filter_bytecode);
	return rule->generate_filter_bytecode(rule, creds);
}

LTTNG_HIDDEN
const char *lttng_event_rule_get_filter(const struct lttng_event_rule *rule)
{
	assert(rule->get_filter);
	return rule->get_filter(rule);
}

LTTNG_HIDDEN
const struct lttng_bytecode *lttng_event_rule_get_filter_bytecode(
		const struct lttng_event_rule *rule)
{
	assert(rule->get_filter_bytecode);
	return rule->get_filter_bytecode(rule);
}

LTTNG_HIDDEN
enum lttng_event_rule_generate_exclusions_status
lttng_event_rule_generate_exclusions(const struct lttng_event_rule *rule,
		struct lttng_event_exclusion **exclusions)
{
	assert(rule->generate_exclusions);
	return rule->generate_exclusions(rule, exclusions);
}

LTTNG_HIDDEN
struct lttng_event *lttng_event_rule_generate_lttng_event(
		const struct lttng_event_rule *rule)
{
	assert(rule->generate_lttng_event);
	return rule->generate_lttng_event(rule);
}

LTTNG_HIDDEN
bool lttng_event_rule_targets_agent_domain(const struct lttng_event_rule *rule)
{
	bool targets_agent_domain = false;
	enum lttng_domain_type type = lttng_event_rule_get_domain_type(rule);

	switch (type) {
	case LTTNG_DOMAIN_JUL:
	case LTTNG_DOMAIN_LOG4J:
	case LTTNG_DOMAIN_PYTHON:
		targets_agent_domain = true;
		break;
	case LTTNG_DOMAIN_UST:
	case LTTNG_DOMAIN_KERNEL:
		targets_agent_domain = false;
		break;
	default:
		abort();
	};

	return targets_agent_domain;
}

const char *lttng_event_rule_type_str(enum lttng_event_rule_type type)
{
	switch (type) {
	case LTTNG_EVENT_RULE_TYPE_UNKNOWN:
		return "unknown";
	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
		return "tracepoint";
	case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL:
		return "kernel syscall";
	case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE:
		return "kernel kprobe";
	case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION:
		return "function";
	case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE:
		return "kernel uprobe";
	case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT:
		return "kernel tracepoint";
	case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT:
		return "user tracepoint";
	case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING:
		return "jul logging";
	default:
		abort();
	}
}

LTTNG_HIDDEN
unsigned long lttng_event_rule_hash(const struct lttng_event_rule *rule)
{
	assert(rule->hash);
	return rule->hash(rule);
}
Commit	Line	Data
7a3dcaf6 JR	1	/*
	2	* Copyright (C) 2019 Jonathan Rajotte
	3	* <jonathan.rajotte-julien@efficios.com>
	4	*
	5	* SPDX-License-Identifier: LGPL-2.1-only
	6	*
	7	*/
	8
	9	#include <assert.h>
	10	#include <common/error.h>
	11	#include <common/macros.h>
	12	#include <common/payload.h>
	13	#include <common/payload-view.h>
959e3c66 JR	14	#include <common/hashtable/hashtable.h>
959e3c66 JR	15	#include <common/hashtable/utils.h>
7a3dcaf6	16	#include <lttng/event-rule/event-rule-internal.h>
d84633c4	17	#include <lttng/event-rule/kernel-kprobe-internal.h>
213efb0c	18	#include <lttng/event-rule/kernel-syscall-internal.h>
d440991b	19	#include <lttng/event-rule/jul-logging-internal.h>
6d420eff	20	#include <lttng/event-rule/tracepoint-internal.h>
b25b2570	21	#include <lttng/event-rule/kernel-tracepoint-internal.h>
e60e9a9a	22	#include <lttng/event-rule/kernel-uprobe-internal.h>
cc66eccf	23	#include <lttng/event-rule/user-tracepoint-internal.h>
7a3dcaf6 JR	24	#include <stdbool.h>
	25
	26	enum lttng_event_rule_type lttng_event_rule_get_type(
	27	const struct lttng_event_rule *event_rule)
	28	{
	29	return event_rule ? event_rule->type : LTTNG_EVENT_RULE_TYPE_UNKNOWN;
	30	}
	31
	32	LTTNG_HIDDEN
	33	enum lttng_domain_type lttng_event_rule_get_domain_type(
	34	const struct lttng_event_rule *event_rule)
	35	{
	36	enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE;
	37
	38	switch (lttng_event_rule_get_type(event_rule)) {
	39	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
6d420eff JR	40	{
	41	enum lttng_event_rule_status status;
	42	status = lttng_event_rule_tracepoint_get_domain_type(event_rule, &domain_type);
	43	assert(status == LTTNG_EVENT_RULE_STATUS_OK);
7a3dcaf6	44	break;
6d420eff	45	}
cc66eccf JR	46	case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT:
	47	domain_type = LTTNG_DOMAIN_UST;
	48	break;
d440991b JR	49	case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING:
	50	domain_type = LTTNG_DOMAIN_JUL;
	51	break;
213efb0c	52	case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL:
d84633c4	53	case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE:
f2d09181	54	case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION:
e60e9a9a	55	case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE:
b25b2570	56	case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT:
7a3dcaf6 JR	57	domain_type = LTTNG_DOMAIN_KERNEL;
	58	break;
	59	case LTTNG_EVENT_RULE_TYPE_UNKNOWN:
	60	domain_type = LTTNG_DOMAIN_NONE;
	61	break;
	62	}
	63
	64	return domain_type;
	65	}
	66
	67	static void lttng_event_rule_release(struct urcu_ref *ref)
	68	{
	69	struct lttng_event_rule *event_rule =
	70	container_of(ref, typeof(*event_rule), ref);
	71
	72	assert(event_rule->destroy);
	73	event_rule->destroy(event_rule);
	74	}
	75
	76	void lttng_event_rule_destroy(struct lttng_event_rule *event_rule)
	77	{
	78	lttng_event_rule_put(event_rule);
	79	}
	80
	81	LTTNG_HIDDEN
	82	bool lttng_event_rule_validate(const struct lttng_event_rule *event_rule)
	83	{
	84	bool valid;
	85
	86	if (!event_rule) {
	87	valid = false;
	88	goto end;
	89	}
	90
	91	if (!event_rule->validate) {
	92	/* Sub-class guarantees that it can never be invalid. */
	93	valid = true;
	94	goto end;
	95	}
	96
	97	valid = event_rule->validate(event_rule);
	98	end:
	99	return valid;
	100	}
	101
	102	LTTNG_HIDDEN
	103	int lttng_event_rule_serialize(const struct lttng_event_rule *event_rule,
	104	struct lttng_payload *payload)
	105	{
	106	int ret;
	107	struct lttng_event_rule_comm event_rule_comm = {};
	108
	109	if (!event_rule) {
	110	ret = -1;
	111	goto end;
	112	}
	113
	114	event_rule_comm.event_rule_type = (int8_t) event_rule->type;
	115
	116	ret = lttng_dynamic_buffer_append(
	117	&payload->buffer, &event_rule_comm, sizeof(event_rule_comm));
	118	if (ret) {
	119	goto end;
	120	}
121
122	ret = event_rule->serialize(event_rule, payload);
123	if (ret) {
124	goto end;
125	}
126	end:
127	return ret;
128	}
129
130	LTTNG_HIDDEN
131	bool lttng_event_rule_is_equal(const struct lttng_event_rule *a,
132	const struct lttng_event_rule *b)
133	{
134	bool is_equal = false;
135
136	if (!a \|\| !b) {
137	goto end;
138	}
139
140	if (a->type != b->type) {
141	goto end;
142	}
143
144	if (a == b) {
145	is_equal = true;
146	goto end;
147	}
148
149	is_equal = a->equal ? a->equal(a, b) : true;
150	end:
151	return is_equal;
152	}
153
154	LTTNG_HIDDEN
155	ssize_t lttng_event_rule_create_from_payload(
156	struct lttng_payload_view *view,
157	struct lttng_event_rule **event_rule)
158	{
159	ssize_t ret, consumed = 0;
7a3dcaf6	160	event_rule_create_from_payload_cb create_from_payload = NULL;
3e6e0df2 JG	161	const struct lttng_event_rule_comm *event_rule_comm;
	162	const struct lttng_payload_view event_rule_comm_view =
	163	lttng_payload_view_from_view(
	164	view, 0, sizeof(*event_rule_comm));
7a3dcaf6 JR	165
	166	if (!view \|\| !event_rule) {
	167	ret = -1;
	168	goto end;
	169	}
	170
3e6e0df2 JG	171	if (!lttng_payload_view_is_valid(&event_rule_comm_view)) {
	172	ret = -1;
	173	goto end;
	174	}
	175
683d081a	176	DBG("Deserializing event_rule from payload");
3e6e0df2	177	event_rule_comm = (const struct lttng_event_rule_comm *) event_rule_comm_view.buffer.data;
7a3dcaf6 JR	178	consumed += sizeof(*event_rule_comm);
	179
	180	switch ((enum lttng_event_rule_type) event_rule_comm->event_rule_type) {
	181	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
6d420eff JR	182	create_from_payload =
6d420eff JR	183	lttng_event_rule_tracepoint_create_from_payload;
7a3dcaf6	184	break;
d84633c4 JR	185	case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE:
d84633c4 JR	186	create_from_payload = lttng_event_rule_kernel_kprobe_create_from_payload;
7a3dcaf6	187	break;
f2d09181	188	case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION:
7a3dcaf6 JR	189	/* TODO */
7a3dcaf6 JR	190	break;
e60e9a9a JR	191	case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE:
e60e9a9a JR	192	create_from_payload = lttng_event_rule_kernel_uprobe_create_from_payload;
7a3dcaf6	193	break;
213efb0c	194	case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL:
e6a39346	195	create_from_payload =
213efb0c	196	lttng_event_rule_kernel_syscall_create_from_payload;
7a3dcaf6	197	break;
b25b2570 JR	198	case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT:
	199	create_from_payload =
	200	lttng_event_rule_kernel_tracepoint_create_from_payload;
	201	break;
cc66eccf JR	202	case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT:
	203	create_from_payload =
	204	lttng_event_rule_user_tracepoint_create_from_payload;
	205	break;
d440991b JR	206	case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING:
	207	create_from_payload =
	208	lttng_event_rule_jul_logging_create_from_payload;
	209	break;
7a3dcaf6 JR	210	default:
	211	ERR("Attempted to create event rule of unknown type (%i)",
	212	(int) event_rule_comm->event_rule_type);
	213	ret = -1;
	214	goto end;
	215	}
	216
	217	assert(create_from_payload);
	218
	219	{
	220	struct lttng_payload_view child_view =
	221	lttng_payload_view_from_view(
	222	view, consumed, -1);
	223
	224	ret = create_from_payload(&child_view, event_rule);
	225	if (ret < 0) {
	226	goto end;
	227	}
	228
	229	consumed += ret;
	230	}
	231
	232	if (!lttng_event_rule_validate(*event_rule)) {
	233	ret = -1;
	234	goto end;
	235	}
	236
	237	ret = consumed;
	238	end:
	239	return ret;
	240	}
	241
	242	LTTNG_HIDDEN
	243	void lttng_event_rule_init(struct lttng_event_rule *event_rule,
	244	enum lttng_event_rule_type type)
	245	{
	246	urcu_ref_init(&event_rule->ref);
	247	event_rule->type = type;
	248	}
	249
	250	LTTNG_HIDDEN
	251	bool lttng_event_rule_get(struct lttng_event_rule *event_rule)
	252	{
	253	return urcu_ref_get_unless_zero(&event_rule->ref);
	254	}
	255
	256	LTTNG_HIDDEN
	257	void lttng_event_rule_put(struct lttng_event_rule *event_rule)
	258	{
	259	if (!event_rule) {
	260	return;
	261	}
	262
	263	assert(event_rule->ref.refcount);
	264	urcu_ref_put(&event_rule->ref, lttng_event_rule_release);
	265	}
	266
	267	LTTNG_HIDDEN
	268	enum lttng_error_code lttng_event_rule_generate_filter_bytecode(
58daac01 JR	269	struct lttng_event_rule *rule,
58daac01 JR	270	const struct lttng_credentials *creds)
7a3dcaf6 JR	271	{
7a3dcaf6 JR	272	assert(rule->generate_filter_bytecode);
58daac01	273	return rule->generate_filter_bytecode(rule, creds);
7a3dcaf6 JR	274	}
	275
	276	LTTNG_HIDDEN
	277	const char lttng_event_rule_get_filter(const struct lttng_event_rule rule)
	278	{
	279	assert(rule->get_filter);
	280	return rule->get_filter(rule);
	281	}
	282
	283	LTTNG_HIDDEN
2b00d462	284	const struct lttng_bytecode *lttng_event_rule_get_filter_bytecode(
7a3dcaf6 JR	285	const struct lttng_event_rule *rule)
	286	{
	287	assert(rule->get_filter_bytecode);
	288	return rule->get_filter_bytecode(rule);
	289	}
	290
	291	LTTNG_HIDDEN
993578ff JR	292	enum lttng_event_rule_generate_exclusions_status
	293	lttng_event_rule_generate_exclusions(const struct lttng_event_rule *rule,
	294	struct lttng_event_exclusion **exclusions)
7a3dcaf6 JR	295	{
7a3dcaf6 JR	296	assert(rule->generate_exclusions);
993578ff	297	return rule->generate_exclusions(rule, exclusions);
7a3dcaf6 JR	298	}
	299
	300	LTTNG_HIDDEN
44760c20 JR	301	struct lttng_event *lttng_event_rule_generate_lttng_event(
	302	const struct lttng_event_rule *rule)
	303	{
	304	assert(rule->generate_lttng_event);
	305	return rule->generate_lttng_event(rule);
	306	}
	307
	308	LTTNG_HIDDEN
	309	bool lttng_event_rule_targets_agent_domain(const struct lttng_event_rule *rule)
	310	{
	311	bool targets_agent_domain = false;
	312	enum lttng_domain_type type = lttng_event_rule_get_domain_type(rule);
	313
	314	switch (type) {
	315	case LTTNG_DOMAIN_JUL:
	316	case LTTNG_DOMAIN_LOG4J:
	317	case LTTNG_DOMAIN_PYTHON:
	318	targets_agent_domain = true;
	319	break;
	320	case LTTNG_DOMAIN_UST:
	321	case LTTNG_DOMAIN_KERNEL:
	322	targets_agent_domain = false;
	323	break;
	324	default:
	325	abort();
	326	};
	327
	328	return targets_agent_domain;
	329	}
	330
7a3dcaf6 JR	331	const char *lttng_event_rule_type_str(enum lttng_event_rule_type type)
	332	{
	333	switch (type) {
	334	case LTTNG_EVENT_RULE_TYPE_UNKNOWN:
	335	return "unknown";
	336	case LTTNG_EVENT_RULE_TYPE_TRACEPOINT:
	337	return "tracepoint";
213efb0c JR	338	case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL:
213efb0c JR	339	return "kernel syscall";
d84633c4 JR	340	case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE:
d84633c4 JR	341	return "kernel kprobe";
f2d09181	342	case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION:
7a3dcaf6	343	return "function";
e60e9a9a JR	344	case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE:
e60e9a9a JR	345	return "kernel uprobe";
b25b2570 JR	346	case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT:
b25b2570 JR	347	return "kernel tracepoint";
cc66eccf JR	348	case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT:
cc66eccf JR	349	return "user tracepoint";
d440991b JR	350	case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING:
d440991b JR	351	return "jul logging";
7a3dcaf6 JR	352	default:
	353	abort();
	354	}
	355	}
959e3c66 JR	356
	357	LTTNG_HIDDEN
	358	unsigned long lttng_event_rule_hash(const struct lttng_event_rule *rule)
	359	{
	360	assert(rule->hash);
	361	return rule->hash(rule);
	362	}