[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 "../command.hpp"

#include <common/mi-lttng.hpp>

#include <lttng/domain-internal.hpp>

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

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, nullptr, OPT_HELP, nullptr, nullptr },
	{ "session", 's', POPT_ARG_STRING, &opt_session_name, 0, nullptr, nullptr },
	{ "all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, nullptr, nullptr },
	{ "channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, nullptr, nullptr },
	{ "jul", 'j', POPT_ARG_VAL, &opt_jul, 1, nullptr, nullptr },
	{ "log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, nullptr, nullptr },
	{ "python", 'p', POPT_ARG_VAL, &opt_python, 1, nullptr, nullptr },
	{ "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, nullptr, nullptr },
	{ "userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, nullptr, nullptr },
	{ "syscall", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_SYSCALL, nullptr, nullptr },
	{ "probe", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_PROBE, nullptr, nullptr },
	{ "tracepoint", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_TRACEPOINT, nullptr, nullptr },
	{ "function", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_FUNCTION, nullptr, nullptr },
	{ "all", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_ALL, nullptr, nullptr },
	{ "list-options", 0, POPT_ARG_NONE, nullptr, OPT_LIST_OPTIONS, nullptr, nullptr },
	{ nullptr, 0, 0, nullptr, 0, nullptr, nullptr }
};

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

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

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

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

	LTTNG_ASSERT(writer);
	LTTNG_ASSERT(event_name);

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

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

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

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

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

/*
 *  disable_events
 *
 *  Disabling event using the lttng API.
 */
static int disable_events(char *session_name, char *event_list)
{
	enum cmd_error_code ret = CMD_SUCCESS, command_ret = CMD_SUCCESS;
	bool enabled = true, success = true, warn = false;
	char *event_name, *channel_name = nullptr;
	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 == nullptr) {
		ret = CMD_ERROR;
		goto error;
	}

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

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

		/* Open events element */
		mi_ret = mi_lttng_writer_open_element(writer, config_element_events);
		if (mi_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) {
		const int disable_ret =
			lttng_disable_event_ext(handle, &event, channel_name, nullptr);

		if (disable_ret < 0) {
			ERR("%s", lttng_strerror(command_ret));
			command_ret = CMD_ERROR;
			enabled = true;
			success = false;
		} else {
			enabled = false;
			success = true;
			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) {
			const int mi_ret = mi_print_event("*", enabled, success);

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

			strncpy(event.name, event_name, sizeof(event.name));
			event.name[sizeof(event.name) - 1] = '\0';
			const int disable_ret =
				lttng_disable_event_ext(handle, &event, channel_name, nullptr);
			if (disable_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(disable_ret),
				    disable_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ?
					    print_raw_channel_name(channel_name) :
					    print_channel_name(channel_name),
				    session_name);
				warn = true;
				success = false;
				/*
				 * If an error occurred we assume that the event is still
				 * enabled.
				 */
				enabled = true;
				command_ret = CMD_ERROR;
			} 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 = true;
				enabled = false;
			}

			if (lttng_opt_mi) {
				const int mi_ret = mi_print_event(event_name, enabled, success);

				if (mi_ret) {
					ret = CMD_ERROR;
					goto error;
				}
			}

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

end:
	if (lttng_opt_mi) {
		/* Close events element and channel element */
		const int mi_ret = mi_lttng_close_multi_element(writer, 2);

		if (mi_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 = nullptr;
	char *event_list = nullptr;
	const char *arg_event_list = nullptr;
	const char *leftover = nullptr;
	int event_type = -1;

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

	/* Default event type */
	opt_event_type = LTTNG_EVENT_ALL;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	free(event_list);

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

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

	poptFreeContext(pc);
	return ret;
}
Commit	Line	Data
e953ef25	1	/*
21cf9b6b	2	* Copyright (C) 2011 EfficiOS Inc.
e953ef25	3	*
ab5be9fa	4	* SPDX-License-Identifier: GPL-2.0-only
e953ef25	5	*
e953ef25 DG	6	*/
e953ef25 DG	7
6c1c0768	8	#define _LGPL_SOURCE
28ab034a JG	9	#include "../command.hpp"
	10
	11	#include <common/mi-lttng.hpp>
	12
	13	#include <lttng/domain-internal.hpp>
	14
e953ef25 DG	15	#include <popt.h>
	16	#include <stdio.h>
	17	#include <stdlib.h>
	18	#include <string.h>
	19	#include <sys/stat.h>
	20	#include <sys/types.h>
	21	#include <unistd.h>
e4d484a5	22
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>
28ab034a	36	;
4fc83d94 PP	37	#endif
4fc83d94 PP	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[] = {
e953ef25 DG	53	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
cd9adb8b JG	54	{ "help", 'h', POPT_ARG_NONE, nullptr, OPT_HELP, nullptr, nullptr },
	55	{ "session", 's', POPT_ARG_STRING, &opt_session_name, 0, nullptr, nullptr },
	56	{ "all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, nullptr, nullptr },
	57	{ "channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, nullptr, nullptr },
	58	{ "jul", 'j', POPT_ARG_VAL, &opt_jul, 1, nullptr, nullptr },
	59	{ "log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, nullptr, nullptr },
	60	{ "python", 'p', POPT_ARG_VAL, &opt_python, 1, nullptr, nullptr },
	61	{ "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, nullptr, nullptr },
	62	{ "userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, nullptr, nullptr },
	63	{ "syscall", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_SYSCALL, nullptr, nullptr },
	64	{ "probe", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_PROBE, nullptr, nullptr },
	65	{ "tracepoint", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_TRACEPOINT, nullptr, nullptr },
	66	{ "function", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_FUNCTION, nullptr, nullptr },
	67	{ "all", 0, POPT_ARG_NONE, nullptr, OPT_TYPE_ALL, nullptr, nullptr },
	68	{ "list-options", 0, POPT_ARG_NONE, nullptr, OPT_LIST_OPTIONS, nullptr, nullptr },
	69	{ nullptr, 0, 0, nullptr, 0, nullptr, nullptr }
e953ef25 DG	70	};
e953ef25 DG	71
28ab034a	72	static const char print_channel_name(const char name)
85076754	73	{
28ab034a	74	return name ?: DEFAULT_CHANNEL_NAME;
85076754 MD	75	}
85076754 MD	76
28ab034a	77	static const char print_raw_channel_name(const char name)
85076754	78	{
28ab034a	79	return name ?: "<default>";
85076754 MD	80	}
85076754 MD	81
28ab034a	82	static const char *print_event_type(const enum lttng_event_type ev_type)
9550ee81 JR	83	{
	84	switch (ev_type) {
	85	case LTTNG_EVENT_ALL:
	86	return "any";
	87	case LTTNG_EVENT_TRACEPOINT:
	88	return "tracepoint";
	89	case LTTNG_EVENT_PROBE:
	90	return "probe";
	91	case LTTNG_EVENT_FUNCTION:
	92	return "function";
	93	case LTTNG_EVENT_FUNCTION_ENTRY:
	94	return "function entry";
	95	case LTTNG_EVENT_SYSCALL:
	96	return "syscall";
	97	default:
	98	return "";
	99	}
	100	}
	101
e4d484a5 JRJ	102	/* Mi print a partial event.
	103	* enabled is 0 or 1
	104	* success is 0 or 1
	105	*/
b53d4e59	106	static int mi_print_event(const char *event_name, int enabled, int success)
e4d484a5 JRJ	107	{
	108	int ret;
	109
a0377dfe FD	110	LTTNG_ASSERT(writer);
a0377dfe FD	111	LTTNG_ASSERT(event_name);
e4d484a5 JRJ	112
	113	/* Open event element */
	114	ret = mi_lttng_writer_open_element(writer, config_element_event);
	115	if (ret) {
	116	goto end;
	117	}
	118
	119	/* Print the name of event */
28ab034a	120	ret = mi_lttng_writer_write_element_string(writer, config_element_name, event_name);
e4d484a5 JRJ	121	if (ret) {
	122	goto end;
	123	}
	124
	125	/* Print enabled ? */
28ab034a	126	ret = mi_lttng_writer_write_element_bool(writer, config_element_enabled, enabled);
e4d484a5 JRJ	127	if (ret) {
	128	goto end;
	129	}
	130
	131	/* Success ? */
28ab034a	132	ret = mi_lttng_writer_write_element_bool(writer, mi_lttng_element_command_success, success);
e4d484a5 JRJ	133	if (ret) {
	134	goto end;
	135	}
	136
	137	/* Close event element */
	138	ret = mi_lttng_writer_close_element(writer);
	139	end:
	140	return ret;
	141	}
	142
e953ef25 DG	143	/*
	144	* disable_events
	145	*
	146	* Disabling event using the lttng API.
	147	*/
5b915816	148	static int disable_events(char session_name, char event_list)
e953ef25	149	{
66cefebd JG	150	enum cmd_error_code ret = CMD_SUCCESS, command_ret = CMD_SUCCESS;
66cefebd JG	151	bool enabled = true, success = true, warn = false;
cd9adb8b	152	char event_name, channel_name = nullptr;
7d29a247	153	struct lttng_domain dom;
6e911cad	154	struct lttng_event event;
e953ef25	155
441c16a7 MD	156	memset(&dom, 0, sizeof(dom));
441c16a7 MD	157
d78d6610	158	/* Create lttng domain */
7d29a247 DG	159	if (opt_kernel) {
7d29a247 DG	160	dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610	161	} else if (opt_userspace) {
9730260e	162	dom.type = LTTNG_DOMAIN_UST;
b9dfb167 DG	163	} else if (opt_jul) {
b9dfb167 DG	164	dom.type = LTTNG_DOMAIN_JUL;
5cdb6027 DG	165	} else if (opt_log4j) {
5cdb6027 DG	166	dom.type = LTTNG_DOMAIN_LOG4J;
0e115563 DG	167	} else if (opt_python) {
0e115563 DG	168	dom.type = LTTNG_DOMAIN_PYTHON;
9730260e	169	} else {
3ecec76a	170	/* Checked by the caller. */
a0377dfe	171	abort();
7d29a247 DG	172	}
7d29a247 DG	173
85076754	174	channel_name = opt_channel_name;
ae856491	175
cd80958d	176	handle = lttng_create_handle(session_name, &dom);
cd9adb8b	177	if (handle == nullptr) {
66cefebd	178	ret = CMD_ERROR;
cd80958d DG	179	goto error;
	180	}
	181
e4d484a5 JRJ	182	/* Mi print the channel and open the events element */
e4d484a5 JRJ	183	if (lttng_opt_mi) {
66cefebd JG	184	int mi_ret = mi_lttng_writer_open_element(writer, config_element_channel);
66cefebd JG	185	if (mi_ret) {
e4d484a5 JRJ	186	ret = CMD_ERROR;
e4d484a5 JRJ	187	goto end;
e953ef25 DG	188	}
e953ef25 DG	189
66cefebd	190	mi_ret = mi_lttng_writer_write_element_string(
28ab034a	191	writer, config_element_name, print_channel_name(channel_name));
66cefebd	192	if (mi_ret) {
e4d484a5 JRJ	193	ret = CMD_ERROR;
	194	goto end;
	195	}
	196
	197	/* Open events element */
66cefebd JG	198	mi_ret = mi_lttng_writer_open_element(writer, config_element_events);
66cefebd JG	199	if (mi_ret) {
e4d484a5 JRJ	200	ret = CMD_ERROR;
	201	goto end;
	202	}
e953ef25 DG	203	}
e953ef25 DG	204
6e911cad	205	memset(&event, 0, sizeof(event));
9b7431cf JG	206	/* Set default loglevel to any/unknown */
	207	event.loglevel = -1;
	208
9550ee81	209	/* opt_event_type contain the event type to disable at this point */
48a40005	210	event.type = (lttng_event_type) opt_event_type;
6e911cad	211
e4d484a5	212	if (opt_disable_all) {
28f23191 JG	213	const int disable_ret =
28f23191 JG	214	lttng_disable_event_ext(handle, &event, channel_name, nullptr);
e4d484a5	215
66cefebd JG	216	if (disable_ret < 0) {
	217	ERR("%s", lttng_strerror(command_ret));
	218	command_ret = CMD_ERROR;
	219	enabled = true;
	220	success = false;
9730260e	221	} else {
66cefebd JG	222	enabled = false;
66cefebd JG	223	success = true;
9550ee81	224	MSG("All %s events of type %s are disabled in channel %s",
28ab034a JG	225	lttng_domain_type_str(dom.type),
	226	print_event_type((lttng_event_type) opt_event_type),
	227	print_channel_name(channel_name));
9730260e DG	228	}
9730260e DG	229
e4d484a5	230	if (lttng_opt_mi) {
66cefebd JG	231	const int mi_ret = mi_print_event("*", enabled, success);
	232
	233	if (mi_ret) {
e4d484a5 JRJ	234	ret = CMD_ERROR;
	235	goto error;
	236	}
	237	}
	238	} else {
	239	/* Strip event list */
5b915816	240	event_name = strtok(event_list, ",");
cd9adb8b	241	while (event_name != nullptr) {
e4d484a5	242	DBG("Disabling event %s", event_name);
e953ef25	243
6e911cad MD	244	strncpy(event.name, event_name, sizeof(event.name));
6e911cad MD	245	event.name[sizeof(event.name) - 1] = '\0';
66cefebd	246	const int disable_ret =
cd9adb8b	247	lttng_disable_event_ext(handle, &event, channel_name, nullptr);
66cefebd	248	if (disable_ret < 0) {
9550ee81	249	ERR("%s of type %s : %s (channel %s, session %s)",
28ab034a JG	250	event_name,
28ab034a JG	251	print_event_type((lttng_event_type) opt_event_type),
ed0c6be4 JG	252	lttng_strerror(disable_ret),
ed0c6be4 JG	253	disable_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ?
28ab034a JG	254	print_raw_channel_name(channel_name) :
	255	print_channel_name(channel_name),
	256	session_name);
66cefebd JG	257	warn = true;
66cefebd JG	258	success = false;
e4d484a5	259	/*
6e911cad MD	260	* If an error occurred we assume that the event is still
6e911cad MD	261	* enabled.
e4d484a5	262	*/
66cefebd JG	263	enabled = true;
66cefebd JG	264	command_ret = CMD_ERROR;
e4d484a5	265	} else {
9550ee81	266	MSG("%s %s of type %s disabled in channel %s for session %s",
28ab034a JG	267	lttng_domain_type_str(dom.type),
	268	event_name,
	269	print_event_type((lttng_event_type) opt_event_type),
	270	print_channel_name(channel_name),
	271	session_name);
66cefebd JG	272	success = true;
66cefebd JG	273	enabled = false;
e4d484a5 JRJ	274	}
	275
	276	if (lttng_opt_mi) {
66cefebd JG	277	const int mi_ret = mi_print_event(event_name, enabled, success);
	278
	279	if (mi_ret) {
e4d484a5 JRJ	280	ret = CMD_ERROR;
	281	goto error;
	282	}
	283	}
	284
	285	/* Next event */
cd9adb8b	286	event_name = strtok(nullptr, ",");
e4d484a5 JRJ	287	}
e4d484a5 JRJ	288	}
ae856491	289
9730260e	290	end:
e4d484a5 JRJ	291	if (lttng_opt_mi) {
e4d484a5 JRJ	292	/* Close events element and channel element */
66cefebd JG	293	const int mi_ret = mi_lttng_close_multi_element(writer, 2);
	294
	295	if (mi_ret) {
e4d484a5 JRJ	296	ret = CMD_ERROR;
	297	}
	298	}
e953ef25	299	error:
e4d484a5 JRJ	300	/* if there is already an error preserve it */
e4d484a5 JRJ	301	if (warn && !ret) {
ae856491 DG	302	ret = CMD_WARNING;
ae856491 DG	303	}
cd80958d	304
e4d484a5 JRJ	305	/* Overwrite ret if an error occurred */
	306	ret = command_ret ? command_ret : ret;
	307
	308	lttng_destroy_handle(handle);
e953ef25 DG	309	return ret;
	310	}
	311
	312	/*
	313	* cmd_disable_events
	314	*
	315	* Disable event to trace session
	316	*/
	317	int cmd_disable_events(int argc, const char **argv)
	318	{
e4d484a5	319	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
e953ef25	320	static poptContext pc;
cd9adb8b JG	321	char *session_name = nullptr;
	322	char *event_list = nullptr;
	323	const char *arg_event_list = nullptr;
	324	const char *leftover = nullptr;
6e911cad	325	int event_type = -1;
e953ef25	326
cd9adb8b	327	pc = poptGetContext(nullptr, argc, argv, long_options, 0);
e953ef25 DG	328	poptReadDefaultConfig(pc, 0);
e953ef25 DG	329
6e911cad MD	330	/* Default event type */
	331	opt_event_type = LTTNG_EVENT_ALL;
	332
e953ef25 DG	333	while ((opt = poptGetNextOpt(pc)) != -1) {
	334	switch (opt) {
	335	case OPT_HELP:
4ba92f18	336	SHOW_HELP();
e953ef25	337	goto end;
9550ee81	338	case OPT_TYPE_SYSCALL:
6e911cad MD	339	opt_event_type = LTTNG_EVENT_SYSCALL;
6e911cad MD	340	break;
9550ee81 JR	341	case OPT_TYPE_TRACEPOINT:
	342	opt_event_type = LTTNG_EVENT_TRACEPOINT;
	343	break;
	344	case OPT_TYPE_PROBE:
	345	opt_event_type = LTTNG_EVENT_PROBE;
	346	break;
	347	case OPT_TYPE_FUNCTION:
	348	opt_event_type = LTTNG_EVENT_FUNCTION;
	349	break;
	350	case OPT_TYPE_ALL:
	351	opt_event_type = LTTNG_EVENT_ALL;
	352	break;
679b4943 SM	353	case OPT_LIST_OPTIONS:
679b4943 SM	354	list_cmd_options(stdout, long_options);
679b4943	355	goto end;
e953ef25	356	default:
e953ef25 DG	357	ret = CMD_UNDEFINED;
	358	goto end;
	359	}
6e911cad MD	360
	361	/* Validate event type. Multiple event type are not supported. */
	362	if (event_type == -1) {
	363	event_type = opt_event_type;
	364	} else {
	365	if (event_type != opt_event_type) {
	366	ERR("Multiple event type not supported.");
	367	ret = CMD_ERROR;
	368	goto end;
	369	}
	370	}
e953ef25 DG	371	}
e953ef25 DG	372
3ecec76a	373	ret = print_missing_or_multiple_domains(
28ab034a	374	opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python, true);
3ecec76a PP	375	if (ret) {
	376	ret = CMD_ERROR;
	377	goto end;
	378	}
	379
9550ee81	380	/* Ust and agent only support ALL event type */
28ab034a JG	381	if ((opt_userspace \|\| opt_jul \|\| opt_log4j \|\| opt_python) &&
28ab034a JG	382	opt_event_type != LTTNG_EVENT_ALL) {
7767963f	383	ERR("Disabling userspace and agent (-j \| -l \| -p) event(s) based on instrumentation type is not supported.\n");
9550ee81 JR	384	ret = CMD_ERROR;
	385	goto end;
	386	}
	387
5b915816	388	arg_event_list = poptGetArg(pc);
cd9adb8b	389	if (arg_event_list == nullptr && opt_disable_all == 0) {
e953ef25	390	ERR("Missing event name(s).\n");
ca1c3607	391	ret = CMD_ERROR;
e953ef25 DG	392	goto end;
	393	}
	394
5b915816 MJ	395	if (opt_disable_all == 0) {
5b915816 MJ	396	event_list = strdup(arg_event_list);
cd9adb8b	397	if (event_list == nullptr) {
5b915816 MJ	398	PERROR("Failed to copy event name(s)");
	399	ret = CMD_ERROR;
	400	goto end;
	401	}
	402	}
	403
68c7f6e5 JD	404	leftover = poptGetArg(pc);
	405	if (leftover) {
	406	ERR("Unknown argument: %s", leftover);
	407	ret = CMD_ERROR;
	408	goto end;
	409	}
	410
cd80958d DG	411	if (!opt_session_name) {
cd80958d DG	412	session_name = get_session_name();
cd9adb8b	413	if (session_name == nullptr) {
ca1c3607	414	ret = CMD_ERROR;
cd80958d DG	415	goto end;
	416	}
	417	} else {
	418	session_name = opt_session_name;
	419	}
	420
e4d484a5 JRJ	421	/* Mi check */
	422	if (lttng_opt_mi) {
	423	writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
	424	if (!writer) {
	425	ret = -LTTNG_ERR_NOMEM;
	426	goto end;
	427	}
	428
	429	/* Open command element */
28ab034a	430	ret = mi_lttng_writer_command_open(writer, mi_lttng_element_command_disable_event);
e4d484a5 JRJ	431	if (ret) {
	432	ret = CMD_ERROR;
	433	goto end;
	434	}
	435
	436	/* Open output element */
28ab034a	437	ret = mi_lttng_writer_open_element(writer, mi_lttng_element_command_output);
e4d484a5 JRJ	438	if (ret) {
	439	ret = CMD_ERROR;
	440	goto end;
	441	}
	442	}
	443
5b915816	444	command_ret = disable_events(session_name, event_list);
e4d484a5 JRJ	445	if (command_ret) {
	446	success = 0;
	447	}
	448
	449	/* Mi closing */
	450	if (lttng_opt_mi) {
	451	/* Close output element */
	452	ret = mi_lttng_writer_close_element(writer);
	453	if (ret) {
	454	ret = CMD_ERROR;
	455	goto end;
	456	}
	457
28ab034a JG	458	ret = mi_lttng_writer_write_element_bool(
28ab034a JG	459	writer, mi_lttng_element_command_success, success);
e4d484a5 JRJ	460	if (ret) {
	461	ret = CMD_ERROR;
	462	goto end;
	463	}
	464
	465	/* Command element close */
	466	ret = mi_lttng_writer_command_close(writer);
	467	if (ret) {
	468	ret = CMD_ERROR;
	469	goto end;
	470	}
	471	}
e953ef25 DG	472
e953ef25 DG	473	end:
5853fd43 DG	474	if (!opt_session_name && session_name) {
	475	free(session_name);
	476	}
e4d484a5	477
5b915816 MJ	478	free(event_list);
5b915816 MJ	479
e4d484a5 JRJ	480	/* Mi clean-up */
	481	if (writer && mi_lttng_writer_destroy(writer)) {
	482	/* Preserve original error code */
	483	ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
	484	}
	485
83f4233d	486	/* Overwrite ret if an error occurred in disable_events */
e4d484a5 JRJ	487	ret = command_ret ? command_ret : ret;
e4d484a5 JRJ	488
ca1c3607	489	poptFreeContext(pc);
e953ef25 DG	490	return ret;
e953ef25 DG	491	}