[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.h>
#include <lttng/domain-internal.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(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)
{
	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(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((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;
	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;
	}

	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;
	}

	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);
	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	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 JRJ	16
e4d484a5 JRJ	17	#include <common/mi-lttng.h>
1004b719	18	#include <lttng/domain-internal.h>
e953ef25	19
c399183f	20	#include "../command.h"
e953ef25 DG	21
e953ef25 DG	22	static char *opt_event_list;
9730260e	23	static int opt_kernel;
e953ef25	24	static char *opt_channel_name;
5440dc42	25	static char *opt_session_name;
e953ef25 DG	26	static int opt_userspace;
e953ef25 DG	27	static int opt_disable_all;
b9dfb167	28	static int opt_jul;
5cdb6027	29	static int opt_log4j;
0e115563	30	static int opt_python;
6e911cad	31	static int opt_event_type;
e953ef25	32
4fc83d94 PP	33	#ifdef LTTNG_EMBED_HELP
	34	static const char help_msg[] =
	35	#include <lttng-disable-event.1.h>
	36	;
	37	#endif
	38
e953ef25 DG	39	enum {
e953ef25 DG	40	OPT_HELP = 1,
9550ee81 JR	41	OPT_TYPE_SYSCALL,
	42	OPT_TYPE_TRACEPOINT,
	43	OPT_TYPE_PROBE,
	44	OPT_TYPE_FUNCTION,
	45	OPT_TYPE_ALL,
679b4943	46	OPT_LIST_OPTIONS,
e953ef25 DG	47	};
e953ef25 DG	48
cd80958d	49	static struct lttng_handle *handle;
e4d484a5	50	static struct mi_writer *writer;
cd80958d	51
e953ef25 DG	52	static struct poptOption long_options[] = {
	53	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	54	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42	55	{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e953ef25 DG	56	{"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
e953ef25 DG	57	{"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
b9dfb167	58	{"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
5cdb6027	59	{"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
0e115563	60	{"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
e953ef25	61	{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
9550ee81 JR	62	{"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
	63	{"syscall", 0, POPT_ARG_NONE, 0, OPT_TYPE_SYSCALL, 0, 0},
	64	{"probe", 0, POPT_ARG_NONE, 0, OPT_TYPE_PROBE, 0, 0},
	65	{"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TYPE_TRACEPOINT, 0, 0},
	66	{"function", 0, POPT_ARG_NONE, 0, OPT_TYPE_FUNCTION, 0, 0},
	67	{"all", 0, POPT_ARG_NONE, 0, OPT_TYPE_ALL, 0, 0},
679b4943	68	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
e953ef25 DG	69	{0, 0, 0, 0, 0, 0, 0}
	70	};
	71
85076754 MD	72	static
	73	const char print_channel_name(const char name)
	74	{
	75	return name ? : DEFAULT_CHANNEL_NAME;
	76	}
	77
	78	static
	79	const char print_raw_channel_name(const char name)
	80	{
	81	return name ? : "<default>";
	82	}
	83
9550ee81 JR	84	static
	85	const char *print_event_type(const enum lttng_event_type ev_type)
	86	{
	87	switch (ev_type) {
	88	case LTTNG_EVENT_ALL:
	89	return "any";
	90	case LTTNG_EVENT_TRACEPOINT:
	91	return "tracepoint";
	92	case LTTNG_EVENT_PROBE:
	93	return "probe";
	94	case LTTNG_EVENT_FUNCTION:
	95	return "function";
	96	case LTTNG_EVENT_FUNCTION_ENTRY:
	97	return "function entry";
	98	case LTTNG_EVENT_SYSCALL:
	99	return "syscall";
	100	default:
	101	return "";
	102	}
	103	}
	104
e4d484a5 JRJ	105	/* Mi print a partial event.
	106	* enabled is 0 or 1
	107	* success is 0 or 1
	108	*/
b53d4e59	109	static int mi_print_event(const char *event_name, int enabled, int success)
e4d484a5 JRJ	110	{
	111	int ret;
	112
a0377dfe FD	113	LTTNG_ASSERT(writer);
a0377dfe FD	114	LTTNG_ASSERT(event_name);
e4d484a5 JRJ	115
	116	/* Open event element */
	117	ret = mi_lttng_writer_open_element(writer, config_element_event);
	118	if (ret) {
	119	goto end;
	120	}
	121
	122	/* Print the name of event */
	123	ret = mi_lttng_writer_write_element_string(writer,
	124	config_element_name, event_name);
	125	if (ret) {
	126	goto end;
	127	}
	128
	129	/* Print enabled ? */
	130	ret = mi_lttng_writer_write_element_bool(writer,
	131	config_element_enabled, enabled);
	132	if (ret) {
	133	goto end;
	134	}
	135
	136	/* Success ? */
	137	ret = mi_lttng_writer_write_element_bool(writer,
	138	mi_lttng_element_command_success, success);
	139	if (ret) {
	140	goto end;
	141	}
	142
	143	/* Close event element */
	144	ret = mi_lttng_writer_close_element(writer);
	145	end:
	146	return ret;
	147	}
	148
e953ef25 DG	149	/*
	150	* disable_events
	151	*
	152	* Disabling event using the lttng API.
	153	*/
cd80958d	154	static int disable_events(char *session_name)
e953ef25	155	{
e4d484a5 JRJ	156	int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
e4d484a5 JRJ	157	int enabled = 1, success = 1;
b73d0b29	158	char event_name, channel_name = NULL;
7d29a247	159	struct lttng_domain dom;
6e911cad	160	struct lttng_event event;
e953ef25	161
441c16a7 MD	162	memset(&dom, 0, sizeof(dom));
441c16a7 MD	163
d78d6610	164	/* Create lttng domain */
7d29a247 DG	165	if (opt_kernel) {
7d29a247 DG	166	dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610	167	} else if (opt_userspace) {
9730260e	168	dom.type = LTTNG_DOMAIN_UST;
b9dfb167 DG	169	} else if (opt_jul) {
b9dfb167 DG	170	dom.type = LTTNG_DOMAIN_JUL;
5cdb6027 DG	171	} else if (opt_log4j) {
5cdb6027 DG	172	dom.type = LTTNG_DOMAIN_LOG4J;
0e115563 DG	173	} else if (opt_python) {
0e115563 DG	174	dom.type = LTTNG_DOMAIN_PYTHON;
9730260e	175	} else {
3ecec76a	176	/* Checked by the caller. */
a0377dfe	177	abort();
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
6e911cad	211	memset(&event, 0, sizeof(event));
9b7431cf JG	212	/* Set default loglevel to any/unknown */
	213	event.loglevel = -1;
	214
9550ee81	215	/* opt_event_type contain the event type to disable at this point */
48a40005	216	event.type = (lttng_event_type) opt_event_type;
6e911cad	217
e4d484a5	218	if (opt_disable_all) {
6e911cad	219	command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
e4d484a5 JRJ	220	if (command_ret < 0) {
	221	ERR("%s", lttng_strerror(command_ret));
	222	enabled = 1;
	223	success = 0;
	224
9730260e	225	} else {
e4d484a5 JRJ	226	enabled = 0;
e4d484a5 JRJ	227	success = 1;
9550ee81	228	MSG("All %s events of type %s are disabled in channel %s",
1004b719	229	lttng_domain_type_str(dom.type),
48a40005	230	print_event_type((lttng_event_type) opt_event_type),
6e911cad	231	print_channel_name(channel_name));
9730260e DG	232	}
9730260e DG	233
e4d484a5 JRJ	234	if (lttng_opt_mi) {
	235	ret = mi_print_event("*", enabled, success);
	236	if (ret) {
	237	ret = CMD_ERROR;
	238	goto error;
	239	}
	240	}
	241	} else {
	242	/* Strip event list */
	243	event_name = strtok(opt_event_list, ",");
	244	while (event_name != NULL) {
	245	DBG("Disabling event %s", event_name);
e953ef25	246
6e911cad MD	247	strncpy(event.name, event_name, sizeof(event.name));
	248	event.name[sizeof(event.name) - 1] = '\0';
	249	command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
e4d484a5	250	if (command_ret < 0) {
9550ee81	251	ERR("%s of type %s : %s (channel %s, session %s)",
6e911cad	252	event_name,
48a40005	253	print_event_type((lttng_event_type) opt_event_type),
e4d484a5 JRJ	254	lttng_strerror(command_ret),
	255	command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
	256	? print_raw_channel_name(channel_name)
	257	: print_channel_name(channel_name),
	258	session_name);
	259	warn = 1;
	260	success = 0;
	261	/*
6e911cad MD	262	* If an error occurred we assume that the event is still
6e911cad MD	263	* enabled.
e4d484a5 JRJ	264	*/
	265	enabled = 1;
	266	} else {
9550ee81	267	MSG("%s %s of type %s disabled in channel %s for session %s",
1004b719	268	lttng_domain_type_str(dom.type),
6e911cad	269	event_name,
48a40005	270	print_event_type((lttng_event_type) opt_event_type),
e4d484a5 JRJ	271	print_channel_name(channel_name),
	272	session_name);
	273	success = 1;
	274	enabled = 0;
	275	}
	276
	277	if (lttng_opt_mi) {
	278	ret = mi_print_event(event_name, enabled, success);
	279	if (ret) {
	280	ret = CMD_ERROR;
	281	goto error;
	282	}
	283	}
	284
	285	/* Next event */
	286	event_name = strtok(NULL, ",");
	287	}
	288	}
ae856491	289
9730260e	290	end:
e4d484a5 JRJ	291	if (lttng_opt_mi) {
	292	/* Close events element and channel element */
	293	ret = mi_lttng_close_multi_element(writer, 2);
	294	if (ret) {
	295	ret = CMD_ERROR;
	296	}
	297	}
e953ef25	298	error:
e4d484a5 JRJ	299	/* if there is already an error preserve it */
e4d484a5 JRJ	300	if (warn && !ret) {
ae856491 DG	301	ret = CMD_WARNING;
ae856491 DG	302	}
cd80958d	303
e4d484a5 JRJ	304	/* Overwrite ret if an error occurred */
	305	ret = command_ret ? command_ret : ret;
	306
	307	lttng_destroy_handle(handle);
e953ef25 DG	308	return ret;
	309	}
	310
	311	/*
	312	* cmd_disable_events
	313	*
	314	* Disable event to trace session
	315	*/
	316	int cmd_disable_events(int argc, const char **argv)
	317	{
e4d484a5	318	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
e953ef25	319	static poptContext pc;
cd80958d	320	char *session_name = NULL;
68c7f6e5	321	const char *leftover = NULL;
6e911cad	322	int event_type = -1;
e953ef25 DG	323
	324	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	325	poptReadDefaultConfig(pc, 0);
	326
6e911cad MD	327	/* Default event type */
	328	opt_event_type = LTTNG_EVENT_ALL;
	329
e953ef25 DG	330	while ((opt = poptGetNextOpt(pc)) != -1) {
	331	switch (opt) {
	332	case OPT_HELP:
4ba92f18	333	SHOW_HELP();
e953ef25	334	goto end;
9550ee81	335	case OPT_TYPE_SYSCALL:
6e911cad MD	336	opt_event_type = LTTNG_EVENT_SYSCALL;
6e911cad MD	337	break;
9550ee81 JR	338	case OPT_TYPE_TRACEPOINT:
	339	opt_event_type = LTTNG_EVENT_TRACEPOINT;
	340	break;
	341	case OPT_TYPE_PROBE:
	342	opt_event_type = LTTNG_EVENT_PROBE;
	343	break;
	344	case OPT_TYPE_FUNCTION:
	345	opt_event_type = LTTNG_EVENT_FUNCTION;
	346	break;
	347	case OPT_TYPE_ALL:
	348	opt_event_type = LTTNG_EVENT_ALL;
	349	break;
679b4943 SM	350	case OPT_LIST_OPTIONS:
679b4943 SM	351	list_cmd_options(stdout, long_options);
679b4943	352	goto end;
e953ef25	353	default:
e953ef25 DG	354	ret = CMD_UNDEFINED;
	355	goto end;
	356	}
6e911cad MD	357
	358	/* Validate event type. Multiple event type are not supported. */
	359	if (event_type == -1) {
	360	event_type = opt_event_type;
	361	} else {
	362	if (event_type != opt_event_type) {
	363	ERR("Multiple event type not supported.");
	364	ret = CMD_ERROR;
	365	goto end;
	366	}
	367	}
e953ef25 DG	368	}
e953ef25 DG	369
3ecec76a	370	ret = print_missing_or_multiple_domains(
3533d06b JG	371	opt_kernel + opt_userspace + opt_jul + opt_log4j +
	372	opt_python,
	373	true);
3ecec76a PP	374	if (ret) {
	375	ret = CMD_ERROR;
	376	goto end;
	377	}
	378
9550ee81 JR	379	/* Ust and agent only support ALL event type */
	380	if ((opt_userspace \|\| opt_jul \|\| opt_log4j \|\| opt_python)
	381	&& opt_event_type != LTTNG_EVENT_ALL) {
7767963f	382	ERR("Disabling userspace and agent (-j \| -l \| -p) event(s) based on instrumentation type is not supported.\n");
9550ee81 JR	383	ret = CMD_ERROR;
	384	goto end;
	385	}
	386
e953ef25 DG	387	opt_event_list = (char*) poptGetArg(pc);
	388	if (opt_event_list == NULL && opt_disable_all == 0) {
	389	ERR("Missing event name(s).\n");
ca1c3607	390	ret = CMD_ERROR;
e953ef25 DG	391	goto end;
	392	}
	393
68c7f6e5 JD	394	leftover = poptGetArg(pc);
	395	if (leftover) {
	396	ERR("Unknown argument: %s", leftover);
	397	ret = CMD_ERROR;
	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	}