[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 _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 <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;
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(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;
	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. */
		assert(0);
	}

	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 = 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",
					get_domain_str(dom.type),
					print_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(opt_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(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",
						get_domain_str(dom.type),
						event_name,
						print_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;
	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);
	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;
	}

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