[lttng-tools.git] / src / bin / lttng / commands / disable_events.cpp

/*
 * Copyright (C) 2011 EfficiOS Inc.
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#define _LGPL_SOURCE
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include <common/mi-lttng.hpp>
#include <lttng/domain-internal.hpp>

#include "../command.hpp"

static int opt_kernel;
static char *opt_channel_name;
static char *opt_session_name;
static int opt_userspace;
static int opt_disable_all;
static int opt_jul;
static int opt_log4j;
static int opt_python;
static int opt_event_type;

#ifdef LTTNG_EMBED_HELP
static const char help_msg[] =
#include <lttng-disable-event.1.h>
;
#endif

enum {
	OPT_HELP = 1,
	OPT_TYPE_SYSCALL,
	OPT_TYPE_TRACEPOINT,
	OPT_TYPE_PROBE,
	OPT_TYPE_FUNCTION,
	OPT_TYPE_ALL,
	OPT_LIST_OPTIONS,
};

static struct lttng_handle *handle;
static struct mi_writer *writer;

static struct poptOption long_options[] = {
	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	{"help",           'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
	{"session",        's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
	{"all-events",     'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
	{"channel",        'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
	{"jul",            'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
	{"log4j",          'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
	{"python",         'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
	{"kernel",         'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
	{"userspace",      'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
	{"syscall",          0, POPT_ARG_NONE, 0, OPT_TYPE_SYSCALL, 0, 0},
	{"probe",            0, POPT_ARG_NONE, 0, OPT_TYPE_PROBE, 0, 0},
	{"tracepoint",       0, POPT_ARG_NONE, 0, OPT_TYPE_TRACEPOINT, 0, 0},
	{"function",         0, POPT_ARG_NONE, 0, OPT_TYPE_FUNCTION, 0, 0},
	{"all",              0, POPT_ARG_NONE, 0, OPT_TYPE_ALL, 0, 0},
	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
	{0, 0, 0, 0, 0, 0, 0}
};

static
const char *print_channel_name(const char *name)
{
	return name ? : DEFAULT_CHANNEL_NAME;
}

static
const char *print_raw_channel_name(const char *name)
{
	return name ? : "<default>";
}

static
const char *print_event_type(const enum lttng_event_type ev_type)
{
	switch (ev_type) {
	case LTTNG_EVENT_ALL:
		return "any";
	case LTTNG_EVENT_TRACEPOINT:
		return "tracepoint";
	case LTTNG_EVENT_PROBE:
		return "probe";
	case LTTNG_EVENT_FUNCTION:
		return "function";
	case LTTNG_EVENT_FUNCTION_ENTRY:
		return "function entry";
	case LTTNG_EVENT_SYSCALL:
		return "syscall";
	default:
		return "";
	}
}

/* Mi print a partial event.
 * enabled is 0 or 1
 * success is 0 or 1
 */
static int mi_print_event(const char *event_name, int enabled, int success)
{
	int ret;

	LTTNG_ASSERT(writer);
	LTTNG_ASSERT(event_name);

	/* Open event element */
	ret = mi_lttng_writer_open_element(writer, config_element_event);
	if (ret) {
		goto end;
	}

	/* Print the name of event */
	ret = mi_lttng_writer_write_element_string(writer,
			config_element_name, event_name);
	if (ret) {
		goto end;
	}

	/* Print enabled ? */
	ret = mi_lttng_writer_write_element_bool(writer,
			config_element_enabled, enabled);
	if (ret) {
		goto end;
	}

	/* Success ? */
	ret = mi_lttng_writer_write_element_bool(writer,
			mi_lttng_element_command_success, success);
	if (ret) {
		goto end;
	}

	/* Close event element */
	ret = mi_lttng_writer_close_element(writer);
end:
	return ret;
}

/*
 *  disable_events
 *
 *  Disabling event using the lttng API.
 */
static int disable_events(char *session_name, char *event_list)
{
	int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
	int enabled = 1, success = 1;
	char *event_name, *channel_name = NULL;
	struct lttng_domain dom;
	struct lttng_event event;

	memset(&dom, 0, sizeof(dom));

	/* Create lttng domain */
	if (opt_kernel) {
		dom.type = LTTNG_DOMAIN_KERNEL;
	} else if (opt_userspace) {
		dom.type = LTTNG_DOMAIN_UST;
	} else if (opt_jul) {
		dom.type = LTTNG_DOMAIN_JUL;
	} else if (opt_log4j) {
		dom.type = LTTNG_DOMAIN_LOG4J;
	} else if (opt_python) {
		dom.type = LTTNG_DOMAIN_PYTHON;
	} else {
		/* Checked by the caller. */
		abort();
	}

	channel_name = opt_channel_name;

	handle = lttng_create_handle(session_name, &dom);
	if (handle == NULL) {
		ret = -1;
		goto error;
	}

	/* Mi print the channel and open the events element */
	if (lttng_opt_mi) {
		ret = mi_lttng_writer_open_element(writer, config_element_channel);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}

		ret = mi_lttng_writer_write_element_string(writer,
				config_element_name, print_channel_name(channel_name));
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}

		/* Open events element */
		ret = mi_lttng_writer_open_element(writer, config_element_events);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}
	}

	memset(&event, 0, sizeof(event));
	/* Set default loglevel to any/unknown */
	event.loglevel = -1;

	/* opt_event_type contain the event type to disable at this point */
	event.type = (lttng_event_type) opt_event_type;

	if (opt_disable_all) {
		command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
		if (command_ret < 0) {
			ERR("%s", lttng_strerror(command_ret));
			enabled = 1;
			success = 0;

		} else {
			enabled = 0;
			success = 1;
			MSG("All %s events of type %s are disabled in channel %s",
					lttng_domain_type_str(dom.type),
					print_event_type((lttng_event_type) opt_event_type),
					print_channel_name(channel_name));
		}

		if (lttng_opt_mi) {
			ret = mi_print_event("*", enabled, success);
			if (ret) {
				ret = CMD_ERROR;
				goto error;
			}
		}
	} else {
		/* Strip event list */
		event_name = strtok(event_list, ",");
		while (event_name != NULL) {
			DBG("Disabling event %s", event_name);

			strncpy(event.name, event_name, sizeof(event.name));
			event.name[sizeof(event.name) - 1] = '\0';
			command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
			if (command_ret < 0) {
				ERR("%s of type %s : %s (channel %s, session %s)",
						event_name,
						print_event_type((lttng_event_type) opt_event_type),
						lttng_strerror(command_ret),
						command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
							? print_raw_channel_name(channel_name)
							: print_channel_name(channel_name),
						session_name);
				warn = 1;
				success = 0;
				/*
				 * If an error occurred we assume that the event is still
				 * enabled.
				 */
				enabled = 1;
			} else {
				MSG("%s %s of type %s disabled in channel %s for session %s",
						lttng_domain_type_str(dom.type),
						event_name,
						print_event_type((lttng_event_type) opt_event_type),
						print_channel_name(channel_name),
						session_name);
				success = 1;
				enabled = 0;
			}

			if (lttng_opt_mi) {
				ret = mi_print_event(event_name, enabled, success);
				if (ret) {
					ret = CMD_ERROR;
					goto error;
				}
			}

			/* Next event */
			event_name = strtok(NULL, ",");
		}
	}

end:
	if (lttng_opt_mi) {
		/* Close events element and channel element */
		ret = mi_lttng_close_multi_element(writer, 2);
		if (ret) {
			ret = CMD_ERROR;
		}
	}
error:
	/* if there is already an error preserve it */
	if (warn && !ret) {
		ret = CMD_WARNING;
	}

	/* Overwrite ret if an error occurred */
	ret = command_ret ? command_ret : ret;

	lttng_destroy_handle(handle);
	return ret;
}

/*
 *  cmd_disable_events
 *
 *  Disable event to trace session
 */
int cmd_disable_events(int argc, const char **argv)
{
	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
	static poptContext pc;
	char *session_name = NULL;
	char *event_list = NULL;
	const char *arg_event_list = NULL;
	const char *leftover = NULL;
	int event_type = -1;

	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	poptReadDefaultConfig(pc, 0);

	/* Default event type */
	opt_event_type = LTTNG_EVENT_ALL;

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		case OPT_HELP:
			SHOW_HELP();
			goto end;
		case OPT_TYPE_SYSCALL:
			opt_event_type = LTTNG_EVENT_SYSCALL;
			break;
		case OPT_TYPE_TRACEPOINT:
			opt_event_type = LTTNG_EVENT_TRACEPOINT;
			break;
		case OPT_TYPE_PROBE:
			opt_event_type = LTTNG_EVENT_PROBE;
			break;
		case OPT_TYPE_FUNCTION:
			opt_event_type = LTTNG_EVENT_FUNCTION;
			break;
		case OPT_TYPE_ALL:
			opt_event_type = LTTNG_EVENT_ALL;
			break;
		case OPT_LIST_OPTIONS:
			list_cmd_options(stdout, long_options);
			goto end;
		default:
			ret = CMD_UNDEFINED;
			goto end;
		}

		/* Validate event type. Multiple event type are not supported. */
		if (event_type == -1) {
			event_type = opt_event_type;
		} else {
			if (event_type != opt_event_type) {
				ERR("Multiple event type not supported.");
				ret = CMD_ERROR;
				goto end;
			}
		}
	}

	ret = print_missing_or_multiple_domains(
			opt_kernel + opt_userspace + opt_jul + opt_log4j +
					opt_python,
			true);
	if (ret) {
		ret = CMD_ERROR;
		goto end;
	}

	/* Ust and agent only support ALL event type */
	if ((opt_userspace || opt_jul || opt_log4j || opt_python)
			&& opt_event_type != LTTNG_EVENT_ALL) {
		ERR("Disabling userspace and agent (-j | -l | -p) event(s) based on instrumentation type is not supported.\n");
		ret = CMD_ERROR;
		goto end;
	}

	arg_event_list = poptGetArg(pc);
	if (arg_event_list == NULL && opt_disable_all == 0) {
		ERR("Missing event name(s).\n");
		ret = CMD_ERROR;
		goto end;
	}

	if (opt_disable_all == 0) {
		event_list = strdup(arg_event_list);
		if (event_list == NULL) {
			PERROR("Failed to copy event name(s)");
			ret = CMD_ERROR;
			goto end;
		}
	}

	leftover = poptGetArg(pc);
	if (leftover) {
		ERR("Unknown argument: %s", leftover);
		ret = CMD_ERROR;
		goto end;
	}

	if (!opt_session_name) {
		session_name = get_session_name();
		if (session_name == NULL) {
			ret = CMD_ERROR;
			goto end;
		}
	} else {
		session_name = opt_session_name;
	}

	/* Mi check */
	if (lttng_opt_mi) {
		writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
		if (!writer) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}

		/* Open command element */
		ret = mi_lttng_writer_command_open(writer,
				mi_lttng_element_command_disable_event);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}

		/* Open output element */
		ret = mi_lttng_writer_open_element(writer,
				mi_lttng_element_command_output);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}
	}

	command_ret = disable_events(session_name, event_list);
	if (command_ret) {
		success = 0;
	}

	/* Mi closing */
	if (lttng_opt_mi) {
		/* Close  output element */
		ret = mi_lttng_writer_close_element(writer);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}

		ret = mi_lttng_writer_write_element_bool(writer,
				mi_lttng_element_command_success, success);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}

		/* Command element close */
		ret = mi_lttng_writer_command_close(writer);
		if (ret) {
			ret = CMD_ERROR;
			goto end;
		}
	}

end:
	if (!opt_session_name && session_name) {
		free(session_name);
	}

	free(event_list);

	/* Mi clean-up */
	if (writer && mi_lttng_writer_destroy(writer)) {
		/* Preserve original error code */
		ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
	}

	/* Overwrite ret if an error occurred in disable_events */
	ret = command_ret ? command_ret : ret;

	poptFreeContext(pc);
	return ret;
}
Commit	Line	Data
e953ef25	1	/*
21cf9b6b	2	* Copyright (C) 2011 EfficiOS Inc.
e953ef25	3	*
ab5be9fa	4	* SPDX-License-Identifier: GPL-2.0-only
e953ef25	5	*
e953ef25 DG	6	*/
e953ef25 DG	7
6c1c0768	8	#define _LGPL_SOURCE
e953ef25 DG	9	#include <popt.h>
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/stat.h>
	14	#include <sys/types.h>
	15	#include <unistd.h>
e4d484a5	16
c9e313bc SM	17	#include <common/mi-lttng.hpp>
c9e313bc SM	18	#include <lttng/domain-internal.hpp>
e953ef25	19
c9e313bc	20	#include "../command.hpp"
e953ef25	21
9730260e	22	static int opt_kernel;
e953ef25	23	static char *opt_channel_name;
5440dc42	24	static char *opt_session_name;
e953ef25 DG	25	static int opt_userspace;
e953ef25 DG	26	static int opt_disable_all;
b9dfb167	27	static int opt_jul;
5cdb6027	28	static int opt_log4j;
0e115563	29	static int opt_python;
6e911cad	30	static int opt_event_type;
e953ef25	31
4fc83d94 PP	32	#ifdef LTTNG_EMBED_HELP
	33	static const char help_msg[] =
	34	#include <lttng-disable-event.1.h>
	35	;
	36	#endif
	37
e953ef25 DG	38	enum {
e953ef25 DG	39	OPT_HELP = 1,
9550ee81 JR	40	OPT_TYPE_SYSCALL,
	41	OPT_TYPE_TRACEPOINT,
	42	OPT_TYPE_PROBE,
	43	OPT_TYPE_FUNCTION,
	44	OPT_TYPE_ALL,
679b4943	45	OPT_LIST_OPTIONS,
e953ef25 DG	46	};
e953ef25 DG	47
cd80958d	48	static struct lttng_handle *handle;
e4d484a5	49	static struct mi_writer *writer;
cd80958d	50
e953ef25 DG	51	static struct poptOption long_options[] = {
	52	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	53	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42	54	{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e953ef25 DG	55	{"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
e953ef25 DG	56	{"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
b9dfb167	57	{"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
5cdb6027	58	{"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
0e115563	59	{"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
e953ef25	60	{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
9550ee81 JR	61	{"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
	62	{"syscall", 0, POPT_ARG_NONE, 0, OPT_TYPE_SYSCALL, 0, 0},
	63	{"probe", 0, POPT_ARG_NONE, 0, OPT_TYPE_PROBE, 0, 0},
	64	{"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TYPE_TRACEPOINT, 0, 0},
	65	{"function", 0, POPT_ARG_NONE, 0, OPT_TYPE_FUNCTION, 0, 0},
	66	{"all", 0, POPT_ARG_NONE, 0, OPT_TYPE_ALL, 0, 0},
679b4943	67	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
e953ef25 DG	68	{0, 0, 0, 0, 0, 0, 0}
	69	};
	70
85076754 MD	71	static
	72	const char print_channel_name(const char name)
	73	{
	74	return name ? : DEFAULT_CHANNEL_NAME;
	75	}
	76
	77	static
	78	const char print_raw_channel_name(const char name)
	79	{
	80	return name ? : "<default>";
	81	}
	82
9550ee81 JR	83	static
	84	const char *print_event_type(const enum lttng_event_type ev_type)
	85	{
	86	switch (ev_type) {
	87	case LTTNG_EVENT_ALL:
	88	return "any";
	89	case LTTNG_EVENT_TRACEPOINT:
	90	return "tracepoint";
	91	case LTTNG_EVENT_PROBE:
	92	return "probe";
	93	case LTTNG_EVENT_FUNCTION:
	94	return "function";
	95	case LTTNG_EVENT_FUNCTION_ENTRY:
	96	return "function entry";
	97	case LTTNG_EVENT_SYSCALL:
	98	return "syscall";
	99	default:
	100	return "";
	101	}
	102	}
	103
e4d484a5 JRJ	104	/* Mi print a partial event.
	105	* enabled is 0 or 1
	106	* success is 0 or 1
	107	*/
b53d4e59	108	static int mi_print_event(const char *event_name, int enabled, int success)
e4d484a5 JRJ	109	{
	110	int ret;
	111
a0377dfe FD	112	LTTNG_ASSERT(writer);
a0377dfe FD	113	LTTNG_ASSERT(event_name);
e4d484a5 JRJ	114
	115	/* Open event element */
	116	ret = mi_lttng_writer_open_element(writer, config_element_event);
	117	if (ret) {
	118	goto end;
	119	}
	120
	121	/* Print the name of event */
	122	ret = mi_lttng_writer_write_element_string(writer,
	123	config_element_name, event_name);
	124	if (ret) {
	125	goto end;
	126	}
	127
	128	/* Print enabled ? */
	129	ret = mi_lttng_writer_write_element_bool(writer,
	130	config_element_enabled, enabled);
	131	if (ret) {
	132	goto end;
	133	}
	134
	135	/* Success ? */
	136	ret = mi_lttng_writer_write_element_bool(writer,
	137	mi_lttng_element_command_success, success);
	138	if (ret) {
	139	goto end;
	140	}
	141
	142	/* Close event element */
	143	ret = mi_lttng_writer_close_element(writer);
	144	end:
	145	return ret;
	146	}
	147
e953ef25 DG	148	/*
	149	* disable_events
	150	*
	151	* Disabling event using the lttng API.
	152	*/
5b915816	153	static int disable_events(char session_name, char event_list)
e953ef25	154	{
e4d484a5 JRJ	155	int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
e4d484a5 JRJ	156	int enabled = 1, success = 1;
b73d0b29	157	char event_name, channel_name = NULL;
7d29a247	158	struct lttng_domain dom;
6e911cad	159	struct lttng_event event;
e953ef25	160
441c16a7 MD	161	memset(&dom, 0, sizeof(dom));
441c16a7 MD	162
d78d6610	163	/* Create lttng domain */
7d29a247 DG	164	if (opt_kernel) {
7d29a247 DG	165	dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610	166	} else if (opt_userspace) {
9730260e	167	dom.type = LTTNG_DOMAIN_UST;
b9dfb167 DG	168	} else if (opt_jul) {
b9dfb167 DG	169	dom.type = LTTNG_DOMAIN_JUL;
5cdb6027 DG	170	} else if (opt_log4j) {
5cdb6027 DG	171	dom.type = LTTNG_DOMAIN_LOG4J;
0e115563 DG	172	} else if (opt_python) {
0e115563 DG	173	dom.type = LTTNG_DOMAIN_PYTHON;
9730260e	174	} else {
3ecec76a	175	/* Checked by the caller. */
a0377dfe	176	abort();
7d29a247 DG	177	}
7d29a247 DG	178
85076754	179	channel_name = opt_channel_name;
ae856491	180
cd80958d DG	181	handle = lttng_create_handle(session_name, &dom);
	182	if (handle == NULL) {
	183	ret = -1;
	184	goto error;
	185	}
	186
e4d484a5 JRJ	187	/* Mi print the channel and open the events element */
	188	if (lttng_opt_mi) {
	189	ret = mi_lttng_writer_open_element(writer, config_element_channel);
	190	if (ret) {
	191	ret = CMD_ERROR;
	192	goto end;
e953ef25 DG	193	}
e953ef25 DG	194
e4d484a5 JRJ	195	ret = mi_lttng_writer_write_element_string(writer,
	196	config_element_name, print_channel_name(channel_name));
	197	if (ret) {
	198	ret = CMD_ERROR;
	199	goto end;
	200	}
	201
	202	/* Open events element */
	203	ret = mi_lttng_writer_open_element(writer, config_element_events);
	204	if (ret) {
	205	ret = CMD_ERROR;
	206	goto end;
	207	}
e953ef25 DG	208	}
e953ef25 DG	209
6e911cad	210	memset(&event, 0, sizeof(event));
9b7431cf JG	211	/* Set default loglevel to any/unknown */
	212	event.loglevel = -1;
	213
9550ee81	214	/* opt_event_type contain the event type to disable at this point */
48a40005	215	event.type = (lttng_event_type) opt_event_type;
6e911cad	216
e4d484a5	217	if (opt_disable_all) {
6e911cad	218	command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
e4d484a5 JRJ	219	if (command_ret < 0) {
	220	ERR("%s", lttng_strerror(command_ret));
	221	enabled = 1;
	222	success = 0;
	223
9730260e	224	} else {
e4d484a5 JRJ	225	enabled = 0;
e4d484a5 JRJ	226	success = 1;
9550ee81	227	MSG("All %s events of type %s are disabled in channel %s",
1004b719	228	lttng_domain_type_str(dom.type),
48a40005	229	print_event_type((lttng_event_type) opt_event_type),
6e911cad	230	print_channel_name(channel_name));
9730260e DG	231	}
9730260e DG	232
e4d484a5 JRJ	233	if (lttng_opt_mi) {
	234	ret = mi_print_event("*", enabled, success);
	235	if (ret) {
	236	ret = CMD_ERROR;
	237	goto error;
	238	}
	239	}
	240	} else {
	241	/* Strip event list */
5b915816	242	event_name = strtok(event_list, ",");
e4d484a5 JRJ	243	while (event_name != NULL) {
e4d484a5 JRJ	244	DBG("Disabling event %s", event_name);
e953ef25	245
6e911cad MD	246	strncpy(event.name, event_name, sizeof(event.name));
	247	event.name[sizeof(event.name) - 1] = '\0';
	248	command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
e4d484a5	249	if (command_ret < 0) {
9550ee81	250	ERR("%s of type %s : %s (channel %s, session %s)",
6e911cad	251	event_name,
48a40005	252	print_event_type((lttng_event_type) opt_event_type),
e4d484a5 JRJ	253	lttng_strerror(command_ret),
	254	command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
	255	? print_raw_channel_name(channel_name)
	256	: print_channel_name(channel_name),
	257	session_name);
	258	warn = 1;
	259	success = 0;
	260	/*
6e911cad MD	261	* If an error occurred we assume that the event is still
6e911cad MD	262	* enabled.
e4d484a5 JRJ	263	*/
	264	enabled = 1;
	265	} else {
9550ee81	266	MSG("%s %s of type %s disabled in channel %s for session %s",
1004b719	267	lttng_domain_type_str(dom.type),
6e911cad	268	event_name,
48a40005	269	print_event_type((lttng_event_type) opt_event_type),
e4d484a5 JRJ	270	print_channel_name(channel_name),
	271	session_name);
	272	success = 1;
	273	enabled = 0;
	274	}
	275
	276	if (lttng_opt_mi) {
	277	ret = mi_print_event(event_name, enabled, success);
	278	if (ret) {
	279	ret = CMD_ERROR;
	280	goto error;
	281	}
	282	}
	283
	284	/* Next event */
	285	event_name = strtok(NULL, ",");
	286	}
	287	}
ae856491	288
9730260e	289	end:
e4d484a5 JRJ	290	if (lttng_opt_mi) {
	291	/* Close events element and channel element */
	292	ret = mi_lttng_close_multi_element(writer, 2);
	293	if (ret) {
	294	ret = CMD_ERROR;
	295	}
	296	}
e953ef25	297	error:
e4d484a5 JRJ	298	/* if there is already an error preserve it */
e4d484a5 JRJ	299	if (warn && !ret) {
ae856491 DG	300	ret = CMD_WARNING;
ae856491 DG	301	}
cd80958d	302
e4d484a5 JRJ	303	/* Overwrite ret if an error occurred */
	304	ret = command_ret ? command_ret : ret;
	305
	306	lttng_destroy_handle(handle);
e953ef25 DG	307	return ret;
	308	}
	309
	310	/*
	311	* cmd_disable_events
	312	*
	313	* Disable event to trace session
	314	*/
	315	int cmd_disable_events(int argc, const char **argv)
	316	{
e4d484a5	317	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
e953ef25	318	static poptContext pc;
cd80958d	319	char *session_name = NULL;
5b915816 MJ	320	char *event_list = NULL;
5b915816 MJ	321	const char *arg_event_list = NULL;
68c7f6e5	322	const char *leftover = NULL;
6e911cad	323	int event_type = -1;
e953ef25 DG	324
	325	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	326	poptReadDefaultConfig(pc, 0);
	327
6e911cad MD	328	/* Default event type */
	329	opt_event_type = LTTNG_EVENT_ALL;
	330
e953ef25 DG	331	while ((opt = poptGetNextOpt(pc)) != -1) {
	332	switch (opt) {
	333	case OPT_HELP:
4ba92f18	334	SHOW_HELP();
e953ef25	335	goto end;
9550ee81	336	case OPT_TYPE_SYSCALL:
6e911cad MD	337	opt_event_type = LTTNG_EVENT_SYSCALL;
6e911cad MD	338	break;
9550ee81 JR	339	case OPT_TYPE_TRACEPOINT:
	340	opt_event_type = LTTNG_EVENT_TRACEPOINT;
	341	break;
	342	case OPT_TYPE_PROBE:
	343	opt_event_type = LTTNG_EVENT_PROBE;
	344	break;
	345	case OPT_TYPE_FUNCTION:
	346	opt_event_type = LTTNG_EVENT_FUNCTION;
	347	break;
	348	case OPT_TYPE_ALL:
	349	opt_event_type = LTTNG_EVENT_ALL;
	350	break;
679b4943 SM	351	case OPT_LIST_OPTIONS:
679b4943 SM	352	list_cmd_options(stdout, long_options);
679b4943	353	goto end;
e953ef25	354	default:
e953ef25 DG	355	ret = CMD_UNDEFINED;
	356	goto end;
	357	}
6e911cad MD	358
	359	/* Validate event type. Multiple event type are not supported. */
	360	if (event_type == -1) {
	361	event_type = opt_event_type;
	362	} else {
	363	if (event_type != opt_event_type) {
	364	ERR("Multiple event type not supported.");
	365	ret = CMD_ERROR;
	366	goto end;
	367	}
	368	}
e953ef25 DG	369	}
e953ef25 DG	370
3ecec76a	371	ret = print_missing_or_multiple_domains(
3533d06b JG	372	opt_kernel + opt_userspace + opt_jul + opt_log4j +
	373	opt_python,
	374	true);
3ecec76a PP	375	if (ret) {
	376	ret = CMD_ERROR;
	377	goto end;
	378	}
	379
9550ee81 JR	380	/* Ust and agent only support ALL event type */
	381	if ((opt_userspace \|\| opt_jul \|\| opt_log4j \|\| opt_python)
	382	&& opt_event_type != LTTNG_EVENT_ALL) {
7767963f	383	ERR("Disabling userspace and agent (-j \| -l \| -p) event(s) based on instrumentation type is not supported.\n");
9550ee81 JR	384	ret = CMD_ERROR;
	385	goto end;
	386	}
	387
5b915816 MJ	388	arg_event_list = poptGetArg(pc);
5b915816 MJ	389	if (arg_event_list == NULL && opt_disable_all == 0) {
e953ef25	390	ERR("Missing event name(s).\n");
ca1c3607	391	ret = CMD_ERROR;
e953ef25 DG	392	goto end;
	393	}
	394
5b915816 MJ	395	if (opt_disable_all == 0) {
	396	event_list = strdup(arg_event_list);
	397	if (event_list == NULL) {
	398	PERROR("Failed to copy event name(s)");
	399	ret = CMD_ERROR;
	400	goto end;
	401	}
	402	}
	403
68c7f6e5 JD	404	leftover = poptGetArg(pc);
	405	if (leftover) {
	406	ERR("Unknown argument: %s", leftover);
	407	ret = CMD_ERROR;
	408	goto end;
	409	}
	410
cd80958d DG	411	if (!opt_session_name) {
	412	session_name = get_session_name();
	413	if (session_name == NULL) {
ca1c3607	414	ret = CMD_ERROR;
cd80958d DG	415	goto end;
	416	}
	417	} else {
	418	session_name = opt_session_name;
	419	}
	420
e4d484a5 JRJ	421	/* Mi check */
	422	if (lttng_opt_mi) {
	423	writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
	424	if (!writer) {
	425	ret = -LTTNG_ERR_NOMEM;
	426	goto end;
	427	}
	428
	429	/* Open command element */
	430	ret = mi_lttng_writer_command_open(writer,
	431	mi_lttng_element_command_disable_event);
	432	if (ret) {
	433	ret = CMD_ERROR;
	434	goto end;
	435	}
	436
	437	/* Open output element */
	438	ret = mi_lttng_writer_open_element(writer,
	439	mi_lttng_element_command_output);
	440	if (ret) {
	441	ret = CMD_ERROR;
	442	goto end;
	443	}
	444	}
	445
5b915816	446	command_ret = disable_events(session_name, event_list);
e4d484a5 JRJ	447	if (command_ret) {
	448	success = 0;
	449	}
	450
	451	/* Mi closing */
	452	if (lttng_opt_mi) {
	453	/* Close output element */
	454	ret = mi_lttng_writer_close_element(writer);
	455	if (ret) {
	456	ret = CMD_ERROR;
	457	goto end;
	458	}
	459
	460	ret = mi_lttng_writer_write_element_bool(writer,
	461	mi_lttng_element_command_success, success);
	462	if (ret) {
	463	ret = CMD_ERROR;
	464	goto end;
	465	}
	466
	467	/* Command element close */
	468	ret = mi_lttng_writer_command_close(writer);
	469	if (ret) {
	470	ret = CMD_ERROR;
	471	goto end;
	472	}
	473	}
e953ef25 DG	474
e953ef25 DG	475	end:
5853fd43 DG	476	if (!opt_session_name && session_name) {
	477	free(session_name);
	478	}
e4d484a5	479
5b915816 MJ	480	free(event_list);
5b915816 MJ	481
e4d484a5 JRJ	482	/* Mi clean-up */
	483	if (writer && mi_lttng_writer_destroy(writer)) {
	484	/* Preserve original error code */
	485	ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
	486	}
	487
83f4233d	488	/* Overwrite ret if an error occurred in disable_events */
e4d484a5 JRJ	489	ret = command_ret ? command_ret : ret;
e4d484a5 JRJ	490
ca1c3607	491	poptFreeContext(pc);
e953ef25 DG	492	return ret;
e953ef25 DG	493	}