[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;
#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},
	{"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, "\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 {
		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;
d78d6610 DG	39	#if 0
	40	/* Not implemented yet */
	41	static char *opt_cmd_name;
e953ef25	42	static pid_t opt_pid;
d78d6610	43	#endif
e953ef25 DG	44
	45	enum {
	46	OPT_HELP = 1,
	47	OPT_USERSPACE,
679b4943	48	OPT_LIST_OPTIONS,
e953ef25 DG	49	};
e953ef25 DG	50
cd80958d	51	static struct lttng_handle *handle;
e4d484a5	52	static struct mi_writer *writer;
cd80958d	53
e953ef25 DG	54	static struct poptOption long_options[] = {
	55	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	56	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42	57	{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e953ef25 DG	58	{"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
e953ef25 DG	59	{"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
b9dfb167	60	{"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
e953ef25	61	{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
d78d6610 DG	62	#if 0
d78d6610 DG	63	/* Not implemented yet */
6caa2bcc	64	{"userspace", 'u', POPT_ARG_STRING \| POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
e953ef25	65	{"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
d78d6610 DG	66	#else
	67	{"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
	68	#endif
679b4943	69	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
e953ef25 DG	70	{0, 0, 0, 0, 0, 0, 0}
	71	};
	72
	73	/*
	74	* usage
	75	*/
	76	static void usage(FILE *ofp)
	77	{
c138a39b	78	fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k \| -u) [OPTIONS]\n");
e953ef25	79	fprintf(ofp, "\n");
32a6298d	80	fprintf(ofp, "Options:\n");
e953ef25	81	fprintf(ofp, " -h, --help Show this help\n");
679b4943	82	fprintf(ofp, " --list-options Simple listing of options\n");
32a6298d DG	83	fprintf(ofp, " -s, --session NAME Apply to session name\n");
32a6298d DG	84	fprintf(ofp, " -c, --channel NAME Apply to this channel\n");
9730260e	85	fprintf(ofp, " -a, --all-events Disable all tracepoints\n");
e953ef25	86	fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
27221701	87	fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
b9dfb167	88	fprintf(ofp, " -j, --jul Apply for Java application using JUL\n");
e953ef25 DG	89	fprintf(ofp, "\n");
	90	}
	91
85076754 MD	92	static
	93	const char print_channel_name(const char name)
	94	{
	95	return name ? : DEFAULT_CHANNEL_NAME;
	96	}
	97
	98	static
	99	const char print_raw_channel_name(const char name)
	100	{
	101	return name ? : "<default>";
	102	}
	103
e4d484a5 JRJ	104	/* Mi print a partial event.
	105	* enabled is 0 or 1
	106	* success is 0 or 1
	107	*/
	108	static int mi_print_event(char *event_name, int enabled, int success)
	109	{
	110	int ret;
	111
	112	assert(writer);
	113	assert(event_name);
	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	*/
cd80958d	153	static int disable_events(char *session_name)
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;
e953ef25	159
441c16a7 MD	160	memset(&dom, 0, sizeof(dom));
441c16a7 MD	161
d78d6610	162	/* Create lttng domain */
7d29a247 DG	163	if (opt_kernel) {
7d29a247 DG	164	dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610	165	} else if (opt_userspace) {
9730260e	166	dom.type = LTTNG_DOMAIN_UST;
b9dfb167 DG	167	} else if (opt_jul) {
b9dfb167 DG	168	dom.type = LTTNG_DOMAIN_JUL;
9730260e	169	} else {
b9dfb167	170	print_missing_domain();
d16c1a4c	171	ret = CMD_ERROR;
9730260e	172	goto error;
7d29a247 DG	173	}
7d29a247 DG	174
85076754	175	channel_name = opt_channel_name;
ae856491	176
cd80958d DG	177	handle = lttng_create_handle(session_name, &dom);
	178	if (handle == NULL) {
	179	ret = -1;
	180	goto error;
	181	}
	182
e4d484a5 JRJ	183	/* Mi print the channel and open the events element */
	184	if (lttng_opt_mi) {
	185	ret = mi_lttng_writer_open_element(writer, config_element_channel);
	186	if (ret) {
	187	ret = CMD_ERROR;
	188	goto end;
e953ef25 DG	189	}
e953ef25 DG	190
e4d484a5 JRJ	191	ret = mi_lttng_writer_write_element_string(writer,
	192	config_element_name, print_channel_name(channel_name));
	193	if (ret) {
	194	ret = CMD_ERROR;
	195	goto end;
	196	}
	197
	198	/* Open events element */
	199	ret = mi_lttng_writer_open_element(writer, config_element_events);
	200	if (ret) {
	201	ret = CMD_ERROR;
	202	goto end;
	203	}
e953ef25 DG	204	}
e953ef25 DG	205
e4d484a5 JRJ	206	if (opt_disable_all) {
	207	command_ret = lttng_disable_event(handle, NULL, channel_name);
	208	if (command_ret < 0) {
	209	ERR("%s", lttng_strerror(command_ret));
	210	enabled = 1;
	211	success = 0;
	212
9730260e	213	} else {
e4d484a5 JRJ	214	enabled = 0;
	215	success = 1;
	216	MSG("All %s events are disabled in channel %s",
	217	get_domain_str(dom.type), print_channel_name(channel_name));
9730260e DG	218	}
9730260e DG	219
e4d484a5 JRJ	220	if (lttng_opt_mi) {
	221	ret = mi_print_event("*", enabled, success);
	222	if (ret) {
	223	ret = CMD_ERROR;
	224	goto error;
	225	}
	226	}
	227	} else {
	228	/* Strip event list */
	229	event_name = strtok(opt_event_list, ",");
	230	while (event_name != NULL) {
	231	DBG("Disabling event %s", event_name);
e953ef25	232
e4d484a5 JRJ	233	command_ret = lttng_disable_event(handle, event_name, channel_name);
	234	if (command_ret < 0) {
	235	ERR("Event %s: %s (channel %s, session %s)", event_name,
	236	lttng_strerror(command_ret),
	237	command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
	238	? print_raw_channel_name(channel_name)
	239	: print_channel_name(channel_name),
	240	session_name);
	241	warn = 1;
	242	success = 0;
	243	/*
	244	* If an error occurred we assume that
	245	* the event is still enabled.
	246	*/
	247	enabled = 1;
	248	} else {
	249	MSG("%s event %s disabled in channel %s for session %s",
	250	get_domain_str(dom.type), event_name,
	251	print_channel_name(channel_name),
	252	session_name);
	253	success = 1;
	254	enabled = 0;
	255	}
	256
	257	if (lttng_opt_mi) {
	258	ret = mi_print_event(event_name, enabled, success);
	259	if (ret) {
	260	ret = CMD_ERROR;
	261	goto error;
	262	}
	263	}
	264
	265	/* Next event */
	266	event_name = strtok(NULL, ",");
	267	}
	268	}
ae856491	269
9730260e	270	end:
e4d484a5 JRJ	271	if (lttng_opt_mi) {
	272	/* Close events element and channel element */
	273	ret = mi_lttng_close_multi_element(writer, 2);
	274	if (ret) {
	275	ret = CMD_ERROR;
	276	}
	277	}
e953ef25	278	error:
e4d484a5 JRJ	279	/* if there is already an error preserve it */
e4d484a5 JRJ	280	if (warn && !ret) {
ae856491 DG	281	ret = CMD_WARNING;
ae856491 DG	282	}
cd80958d	283
e4d484a5 JRJ	284	/* Overwrite ret if an error occurred */
	285	ret = command_ret ? command_ret : ret;
	286
	287	lttng_destroy_handle(handle);
e953ef25 DG	288	return ret;
	289	}
	290
	291	/*
	292	* cmd_disable_events
	293	*
	294	* Disable event to trace session
	295	*/
	296	int cmd_disable_events(int argc, const char **argv)
	297	{
e4d484a5	298	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
e953ef25	299	static poptContext pc;
cd80958d	300	char *session_name = NULL;
e953ef25 DG	301
	302	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	303	poptReadDefaultConfig(pc, 0);
	304
	305	while ((opt = poptGetNextOpt(pc)) != -1) {
	306	switch (opt) {
	307	case OPT_HELP:
ca1c3607	308	usage(stdout);
e953ef25 DG	309	goto end;
	310	case OPT_USERSPACE:
	311	opt_userspace = 1;
e953ef25	312	break;
679b4943 SM	313	case OPT_LIST_OPTIONS:
679b4943 SM	314	list_cmd_options(stdout, long_options);
679b4943	315	goto end;
e953ef25 DG	316	default:
	317	usage(stderr);
	318	ret = CMD_UNDEFINED;
	319	goto end;
	320	}
	321	}
	322
	323	opt_event_list = (char*) poptGetArg(pc);
	324	if (opt_event_list == NULL && opt_disable_all == 0) {
	325	ERR("Missing event name(s).\n");
	326	usage(stderr);
ca1c3607	327	ret = CMD_ERROR;
e953ef25 DG	328	goto end;
	329	}
	330
cd80958d DG	331	if (!opt_session_name) {
	332	session_name = get_session_name();
	333	if (session_name == NULL) {
ca1c3607	334	ret = CMD_ERROR;
cd80958d DG	335	goto end;
	336	}
	337	} else {
	338	session_name = opt_session_name;
	339	}
	340
e4d484a5 JRJ	341	/* Mi check */
	342	if (lttng_opt_mi) {
	343	writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
	344	if (!writer) {
	345	ret = -LTTNG_ERR_NOMEM;
	346	goto end;
	347	}
	348
	349	/* Open command element */
	350	ret = mi_lttng_writer_command_open(writer,
	351	mi_lttng_element_command_disable_event);
	352	if (ret) {
	353	ret = CMD_ERROR;
	354	goto end;
	355	}
	356
	357	/* Open output element */
	358	ret = mi_lttng_writer_open_element(writer,
	359	mi_lttng_element_command_output);
	360	if (ret) {
	361	ret = CMD_ERROR;
	362	goto end;
	363	}
	364	}
	365
	366	command_ret = disable_events(session_name);
	367	if (command_ret) {
	368	success = 0;
	369	}
	370
	371	/* Mi closing */
	372	if (lttng_opt_mi) {
	373	/* Close output element */
	374	ret = mi_lttng_writer_close_element(writer);
	375	if (ret) {
	376	ret = CMD_ERROR;
	377	goto end;
	378	}
	379
	380	ret = mi_lttng_writer_write_element_bool(writer,
	381	mi_lttng_element_command_success, success);
	382	if (ret) {
	383	ret = CMD_ERROR;
	384	goto end;
	385	}
	386
	387	/* Command element close */
	388	ret = mi_lttng_writer_command_close(writer);
	389	if (ret) {
	390	ret = CMD_ERROR;
	391	goto end;
	392	}
	393	}
e953ef25 DG	394
e953ef25 DG	395	end:
5853fd43 DG	396	if (!opt_session_name && session_name) {
	397	free(session_name);
	398	}
e4d484a5 JRJ	399
	400	/* Mi clean-up */
	401	if (writer && mi_lttng_writer_destroy(writer)) {
	402	/* Preserve original error code */
	403	ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
	404	}
	405
	406	/* Overwrite ret if an error occured in disable_events */
	407	ret = command_ret ? command_ret : ret;
	408
ca1c3607	409	poptFreeContext(pc);
e953ef25 DG	410	return ret;
e953ef25 DG	411	}