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

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#define _GNU_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 <assert.h>

#include <common/mi-lttng.h>

#include "../command.h"

static char *opt_event_list;
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;
#if 0
/* Not implemented yet */
static char *opt_cmd_name;
static pid_t opt_pid;
#endif

enum {
	OPT_HELP = 1,
	OPT_USERSPACE,
	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},
	{"kernel",         'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
#if 0
	/* Not implemented yet */
	{"userspace",      'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
	{"pid",            'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
#else
	{"userspace",      'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
#endif
	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
	{0, 0, 0, 0, 0, 0, 0}
};

/*
 * usage
 */
static void usage(FILE *ofp)
{
	fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k | -u) [OPTIONS]\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Options:\n");
	fprintf(ofp, "  -h, --help               Show this help\n");
	fprintf(ofp, "      --list-options       Simple listing of options\n");
	fprintf(ofp, "  -s, --session NAME       Apply to session name\n");
	fprintf(ofp, "  -c, --channel NAME       Apply to this channel\n");
	fprintf(ofp, "  -a, --all-events         Disable all tracepoints\n");
	fprintf(ofp, "  -k, --kernel             Apply for the kernel tracer\n");
	fprintf(ofp, "  -u, --userspace          Apply to the user-space tracer\n");
	fprintf(ofp, "  -j, --jul                Apply for Java application using JUL\n");
	fprintf(ofp, "  -l, --log4j              Apply to Java application using LOG4j\n");
	fprintf(ofp, "\n");
}

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>";
}

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

	assert(writer);
	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)
{
	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;

	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 {
		print_missing_domain();
		ret = CMD_ERROR;
		goto error;
	}

	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;
		}
	}

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

		} else {
			enabled = 0;
			success = 1;
			MSG("All %s events are disabled in channel %s",
					get_domain_str(dom.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(opt_event_list, ",");
		while (event_name != NULL) {
			DBG("Disabling event %s", event_name);

			command_ret = lttng_disable_event(handle, event_name, channel_name);
			if (command_ret < 0) {
				ERR("Event %s: %s (channel %s, session %s)", event_name,
						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 event %s disabled in channel %s for session %s",
						get_domain_str(dom.type), event_name,
						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;

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

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		case OPT_HELP:
			usage(stdout);
			goto end;
		case OPT_USERSPACE:
			opt_userspace = 1;
			break;
		case OPT_LIST_OPTIONS:
			list_cmd_options(stdout, long_options);
			goto end;
		default:
			usage(stderr);
			ret = CMD_UNDEFINED;
			goto end;
		}
	}

	opt_event_list = (char*) poptGetArg(pc);
	if (opt_event_list == NULL && opt_disable_all == 0) {
		ERR("Missing event name(s).\n");
		usage(stderr);
		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);
	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);
	}

	/* 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 occured in disable_events */
	ret = command_ret ? command_ret : ret;

	poptFreeContext(pc);
	return ret;
}
Commit	Line	Data
e953ef25 DG	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
d14d33bf AM	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License, version 2 only,
	6	* as published by the Free Software Foundation.
e953ef25 DG	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
d14d33bf AM	13	* You should have received a copy of the GNU General Public License along
	14	* with this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
e953ef25 DG	16	*/
	17
	18	#define _GNU_SOURCE
	19	#include <popt.h>
	20	#include <stdio.h>
	21	#include <stdlib.h>
	22	#include <string.h>
	23	#include <sys/stat.h>
	24	#include <sys/types.h>
	25	#include <unistd.h>
e4d484a5 JRJ	26	#include <assert.h>
	27
	28	#include <common/mi-lttng.h>
e953ef25	29
c399183f	30	#include "../command.h"
e953ef25 DG	31
e953ef25 DG	32	static char *opt_event_list;
9730260e	33	static int opt_kernel;
e953ef25	34	static char *opt_channel_name;
5440dc42	35	static char *opt_session_name;
e953ef25 DG	36	static int opt_userspace;
e953ef25 DG	37	static int opt_disable_all;
b9dfb167	38	static int opt_jul;
5cdb6027	39	static int opt_log4j;
d78d6610 DG	40	#if 0
	41	/* Not implemented yet */
	42	static char *opt_cmd_name;
e953ef25	43	static pid_t opt_pid;
d78d6610	44	#endif
e953ef25 DG	45
	46	enum {
	47	OPT_HELP = 1,
	48	OPT_USERSPACE,
679b4943	49	OPT_LIST_OPTIONS,
e953ef25 DG	50	};
e953ef25 DG	51
cd80958d	52	static struct lttng_handle *handle;
e4d484a5	53	static struct mi_writer *writer;
cd80958d	54
e953ef25 DG	55	static struct poptOption long_options[] = {
	56	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	57	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42	58	{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e953ef25 DG	59	{"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
e953ef25 DG	60	{"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
b9dfb167	61	{"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
5cdb6027	62	{"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
e953ef25	63	{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
d78d6610 DG	64	#if 0
d78d6610 DG	65	/* Not implemented yet */
6caa2bcc	66	{"userspace", 'u', POPT_ARG_STRING \| POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
e953ef25	67	{"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
d78d6610 DG	68	#else
	69	{"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
	70	#endif
679b4943	71	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
e953ef25 DG	72	{0, 0, 0, 0, 0, 0, 0}
	73	};
	74
	75	/*
	76	* usage
	77	*/
	78	static void usage(FILE *ofp)
	79	{
c138a39b	80	fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k \| -u) [OPTIONS]\n");
e953ef25	81	fprintf(ofp, "\n");
32a6298d	82	fprintf(ofp, "Options:\n");
e953ef25	83	fprintf(ofp, " -h, --help Show this help\n");
679b4943	84	fprintf(ofp, " --list-options Simple listing of options\n");
32a6298d DG	85	fprintf(ofp, " -s, --session NAME Apply to session name\n");
32a6298d DG	86	fprintf(ofp, " -c, --channel NAME Apply to this channel\n");
9730260e	87	fprintf(ofp, " -a, --all-events Disable all tracepoints\n");
e953ef25	88	fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
27221701	89	fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
b9dfb167	90	fprintf(ofp, " -j, --jul Apply for Java application using JUL\n");
5cdb6027	91	fprintf(ofp, " -l, --log4j Apply to Java application using LOG4j\n");
e953ef25 DG	92	fprintf(ofp, "\n");
	93	}
	94
85076754 MD	95	static
	96	const char print_channel_name(const char name)
	97	{
	98	return name ? : DEFAULT_CHANNEL_NAME;
	99	}
	100
	101	static
	102	const char print_raw_channel_name(const char name)
	103	{
	104	return name ? : "<default>";
	105	}
	106
e4d484a5 JRJ	107	/* Mi print a partial event.
	108	* enabled is 0 or 1
	109	* success is 0 or 1
	110	*/
	111	static int mi_print_event(char *event_name, int enabled, int success)
	112	{
	113	int ret;
	114
	115	assert(writer);
	116	assert(event_name);
	117
	118	/* Open event element */
	119	ret = mi_lttng_writer_open_element(writer, config_element_event);
	120	if (ret) {
	121	goto end;
	122	}
	123
	124	/* Print the name of event */
	125	ret = mi_lttng_writer_write_element_string(writer,
	126	config_element_name, event_name);
	127	if (ret) {
	128	goto end;
	129	}
	130
	131	/* Print enabled ? */
	132	ret = mi_lttng_writer_write_element_bool(writer,
	133	config_element_enabled, enabled);
	134	if (ret) {
	135	goto end;
	136	}
	137
	138	/* Success ? */
	139	ret = mi_lttng_writer_write_element_bool(writer,
	140	mi_lttng_element_command_success, success);
	141	if (ret) {
	142	goto end;
	143	}
	144
	145	/* Close event element */
	146	ret = mi_lttng_writer_close_element(writer);
	147	end:
	148	return ret;
	149	}
	150
e953ef25 DG	151	/*
	152	* disable_events
	153	*
	154	* Disabling event using the lttng API.
	155	*/
cd80958d	156	static int disable_events(char *session_name)
e953ef25	157	{
e4d484a5 JRJ	158	int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
e4d484a5 JRJ	159	int enabled = 1, success = 1;
b73d0b29	160	char event_name, channel_name = NULL;
7d29a247	161	struct lttng_domain dom;
e953ef25	162
441c16a7 MD	163	memset(&dom, 0, sizeof(dom));
441c16a7 MD	164
d78d6610	165	/* Create lttng domain */
7d29a247 DG	166	if (opt_kernel) {
7d29a247 DG	167	dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610	168	} else if (opt_userspace) {
9730260e	169	dom.type = LTTNG_DOMAIN_UST;
b9dfb167 DG	170	} else if (opt_jul) {
b9dfb167 DG	171	dom.type = LTTNG_DOMAIN_JUL;
5cdb6027 DG	172	} else if (opt_log4j) {
5cdb6027 DG	173	dom.type = LTTNG_DOMAIN_LOG4J;
9730260e	174	} else {
b9dfb167	175	print_missing_domain();
d16c1a4c	176	ret = CMD_ERROR;
9730260e	177	goto error;
7d29a247 DG	178	}
7d29a247 DG	179
85076754	180	channel_name = opt_channel_name;
ae856491	181
cd80958d DG	182	handle = lttng_create_handle(session_name, &dom);
	183	if (handle == NULL) {
	184	ret = -1;
	185	goto error;
	186	}
	187
e4d484a5 JRJ	188	/* Mi print the channel and open the events element */
	189	if (lttng_opt_mi) {
	190	ret = mi_lttng_writer_open_element(writer, config_element_channel);
	191	if (ret) {
	192	ret = CMD_ERROR;
	193	goto end;
e953ef25 DG	194	}
e953ef25 DG	195
e4d484a5 JRJ	196	ret = mi_lttng_writer_write_element_string(writer,
	197	config_element_name, print_channel_name(channel_name));
	198	if (ret) {
	199	ret = CMD_ERROR;
	200	goto end;
	201	}
	202
	203	/* Open events element */
	204	ret = mi_lttng_writer_open_element(writer, config_element_events);
	205	if (ret) {
	206	ret = CMD_ERROR;
	207	goto end;
	208	}
e953ef25 DG	209	}
e953ef25 DG	210
e4d484a5 JRJ	211	if (opt_disable_all) {
	212	command_ret = lttng_disable_event(handle, NULL, channel_name);
	213	if (command_ret < 0) {
	214	ERR("%s", lttng_strerror(command_ret));
	215	enabled = 1;
	216	success = 0;
	217
9730260e	218	} else {
e4d484a5 JRJ	219	enabled = 0;
	220	success = 1;
	221	MSG("All %s events are disabled in channel %s",
	222	get_domain_str(dom.type), print_channel_name(channel_name));
9730260e DG	223	}
9730260e DG	224
e4d484a5 JRJ	225	if (lttng_opt_mi) {
	226	ret = mi_print_event("*", enabled, success);
	227	if (ret) {
	228	ret = CMD_ERROR;
	229	goto error;
	230	}
	231	}
	232	} else {
	233	/* Strip event list */
	234	event_name = strtok(opt_event_list, ",");
	235	while (event_name != NULL) {
	236	DBG("Disabling event %s", event_name);
e953ef25	237
e4d484a5 JRJ	238	command_ret = lttng_disable_event(handle, event_name, channel_name);
	239	if (command_ret < 0) {
	240	ERR("Event %s: %s (channel %s, session %s)", event_name,
	241	lttng_strerror(command_ret),
	242	command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
	243	? print_raw_channel_name(channel_name)
	244	: print_channel_name(channel_name),
	245	session_name);
	246	warn = 1;
	247	success = 0;
	248	/*
	249	* If an error occurred we assume that
	250	* the event is still enabled.
	251	*/
	252	enabled = 1;
	253	} else {
	254	MSG("%s event %s disabled in channel %s for session %s",
	255	get_domain_str(dom.type), event_name,
	256	print_channel_name(channel_name),
	257	session_name);
	258	success = 1;
	259	enabled = 0;
	260	}
	261
	262	if (lttng_opt_mi) {
	263	ret = mi_print_event(event_name, enabled, success);
	264	if (ret) {
	265	ret = CMD_ERROR;
	266	goto error;
	267	}
	268	}
	269
	270	/* Next event */
	271	event_name = strtok(NULL, ",");
	272	}
	273	}
ae856491	274
9730260e	275	end:
e4d484a5 JRJ	276	if (lttng_opt_mi) {
	277	/* Close events element and channel element */
	278	ret = mi_lttng_close_multi_element(writer, 2);
	279	if (ret) {
	280	ret = CMD_ERROR;
	281	}
	282	}
e953ef25	283	error:
e4d484a5 JRJ	284	/* if there is already an error preserve it */
e4d484a5 JRJ	285	if (warn && !ret) {
ae856491 DG	286	ret = CMD_WARNING;
ae856491 DG	287	}
cd80958d	288
e4d484a5 JRJ	289	/* Overwrite ret if an error occurred */
	290	ret = command_ret ? command_ret : ret;
	291
	292	lttng_destroy_handle(handle);
e953ef25 DG	293	return ret;
	294	}
	295
	296	/*
	297	* cmd_disable_events
	298	*
	299	* Disable event to trace session
	300	*/
	301	int cmd_disable_events(int argc, const char **argv)
	302	{
e4d484a5	303	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
e953ef25	304	static poptContext pc;
cd80958d	305	char *session_name = NULL;
e953ef25 DG	306
	307	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	308	poptReadDefaultConfig(pc, 0);
	309
	310	while ((opt = poptGetNextOpt(pc)) != -1) {
	311	switch (opt) {
	312	case OPT_HELP:
ca1c3607	313	usage(stdout);
e953ef25 DG	314	goto end;
	315	case OPT_USERSPACE:
	316	opt_userspace = 1;
e953ef25	317	break;
679b4943 SM	318	case OPT_LIST_OPTIONS:
679b4943 SM	319	list_cmd_options(stdout, long_options);
679b4943	320	goto end;
e953ef25 DG	321	default:
	322	usage(stderr);
	323	ret = CMD_UNDEFINED;
	324	goto end;
	325	}
	326	}
	327
	328	opt_event_list = (char*) poptGetArg(pc);
	329	if (opt_event_list == NULL && opt_disable_all == 0) {
	330	ERR("Missing event name(s).\n");
	331	usage(stderr);
ca1c3607	332	ret = CMD_ERROR;
e953ef25 DG	333	goto end;
	334	}
	335
cd80958d DG	336	if (!opt_session_name) {
	337	session_name = get_session_name();
	338	if (session_name == NULL) {
ca1c3607	339	ret = CMD_ERROR;
cd80958d DG	340	goto end;
	341	}
	342	} else {
	343	session_name = opt_session_name;
	344	}
	345
e4d484a5 JRJ	346	/* Mi check */
	347	if (lttng_opt_mi) {
	348	writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
	349	if (!writer) {
	350	ret = -LTTNG_ERR_NOMEM;
	351	goto end;
	352	}
	353
	354	/* Open command element */
	355	ret = mi_lttng_writer_command_open(writer,
	356	mi_lttng_element_command_disable_event);
	357	if (ret) {
	358	ret = CMD_ERROR;
	359	goto end;
	360	}
	361
	362	/* Open output element */
	363	ret = mi_lttng_writer_open_element(writer,
	364	mi_lttng_element_command_output);
	365	if (ret) {
	366	ret = CMD_ERROR;
	367	goto end;
	368	}
	369	}
	370
	371	command_ret = disable_events(session_name);
	372	if (command_ret) {
	373	success = 0;
	374	}
	375
	376	/* Mi closing */
	377	if (lttng_opt_mi) {
	378	/* Close output element */
	379	ret = mi_lttng_writer_close_element(writer);
	380	if (ret) {
	381	ret = CMD_ERROR;
	382	goto end;
	383	}
	384
	385	ret = mi_lttng_writer_write_element_bool(writer,
	386	mi_lttng_element_command_success, success);
	387	if (ret) {
	388	ret = CMD_ERROR;
	389	goto end;
	390	}
	391
	392	/* Command element close */
	393	ret = mi_lttng_writer_command_close(writer);
	394	if (ret) {
	395	ret = CMD_ERROR;
	396	goto end;
	397	}
	398	}
e953ef25 DG	399
e953ef25 DG	400	end:
5853fd43 DG	401	if (!opt_session_name && session_name) {
	402	free(session_name);
	403	}
e4d484a5 JRJ	404
	405	/* Mi clean-up */
	406	if (writer && mi_lttng_writer_destroy(writer)) {
	407	/* Preserve original error code */
	408	ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
	409	}
	410
	411	/* Overwrite ret if an error occured in disable_events */
	412	ret = command_ret ? command_ret : ret;
	413
ca1c3607	414	poptFreeContext(pc);
e953ef25 DG	415	return ret;
e953ef25 DG	416	}