[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
#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;

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}
};

/*
 * usage
 */
static void usage(FILE *ofp)
{
	fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k | -u) [OPTIONS]\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Options:\n");
	fprintf(ofp, "  -h, --help               Show this help\n");
	fprintf(ofp, "      --list-options       Simple listing of options\n");
	fprintf(ofp, "  -s, --session NAME       Apply to session name\n");
	fprintf(ofp, "  -c, --channel NAME       Apply to this channel\n");
	fprintf(ofp, "  -a, --all-events         Disable all tracepoints\n");
	fprintf(ofp, "  -k, --kernel             Apply for the kernel tracer\n");
	fprintf(ofp, "  -u, --userspace          Apply to the user-space tracer\n");
	fprintf(ofp, "  -j, --jul                Apply for Java application using JUL\n");
	fprintf(ofp, "  -l, --log4j              Apply to Java application using LOG4j\n");
	fprintf(ofp, "  -p, --python             Apply to Python application using logging\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Event type options (Only supported with kernel domain):\n");
	fprintf(ofp, "      --all                All event types (default)\n");
	fprintf(ofp, "      --tracepoint         Tracepoint event\n");
	fprintf(ofp, "      --syscall            System call event\n");
	fprintf(ofp, "      --probe              Probe event\n");
	fprintf(ofp, "      --function           Function event\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>";
}

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:
			usage(stdout);
			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:
			usage(stderr);
			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("UST and agent (-j | -l | -p) event(s) disabling based on event type is not supported.\n");
		usage(stderr);
		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");
		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
6c1c0768	19	#define _LGPL_SOURCE
e953ef25 DG	20	#include <popt.h>
	21	#include <stdio.h>
	22	#include <stdlib.h>
	23	#include <string.h>
	24	#include <sys/stat.h>
	25	#include <sys/types.h>
	26	#include <unistd.h>
e4d484a5 JRJ	27	#include <assert.h>
	28
	29	#include <common/mi-lttng.h>
e953ef25	30
c399183f	31	#include "../command.h"
e953ef25 DG	32
e953ef25 DG	33	static char *opt_event_list;
9730260e	34	static int opt_kernel;
e953ef25	35	static char *opt_channel_name;
5440dc42	36	static char *opt_session_name;
e953ef25 DG	37	static int opt_userspace;
e953ef25 DG	38	static int opt_disable_all;
b9dfb167	39	static int opt_jul;
5cdb6027	40	static int opt_log4j;
0e115563	41	static int opt_python;
6e911cad	42	static int opt_event_type;
e953ef25 DG	43
	44	enum {
	45	OPT_HELP = 1,
9550ee81 JR	46	OPT_TYPE_SYSCALL,
	47	OPT_TYPE_TRACEPOINT,
	48	OPT_TYPE_PROBE,
	49	OPT_TYPE_FUNCTION,
	50	OPT_TYPE_ALL,
679b4943	51	OPT_LIST_OPTIONS,
e953ef25 DG	52	};
e953ef25 DG	53
cd80958d	54	static struct lttng_handle *handle;
e4d484a5	55	static struct mi_writer *writer;
cd80958d	56
e953ef25 DG	57	static struct poptOption long_options[] = {
	58	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	59	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42	60	{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e953ef25 DG	61	{"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
e953ef25 DG	62	{"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
b9dfb167	63	{"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
5cdb6027	64	{"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
0e115563	65	{"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
e953ef25	66	{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
9550ee81 JR	67	{"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
	68	{"syscall", 0, POPT_ARG_NONE, 0, OPT_TYPE_SYSCALL, 0, 0},
	69	{"probe", 0, POPT_ARG_NONE, 0, OPT_TYPE_PROBE, 0, 0},
	70	{"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TYPE_TRACEPOINT, 0, 0},
	71	{"function", 0, POPT_ARG_NONE, 0, OPT_TYPE_FUNCTION, 0, 0},
	72	{"all", 0, POPT_ARG_NONE, 0, OPT_TYPE_ALL, 0, 0},
679b4943	73	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
e953ef25 DG	74	{0, 0, 0, 0, 0, 0, 0}
	75	};
	76
	77	/*
	78	* usage
	79	*/
	80	static void usage(FILE *ofp)
	81	{
c138a39b	82	fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k \| -u) [OPTIONS]\n");
e953ef25	83	fprintf(ofp, "\n");
32a6298d	84	fprintf(ofp, "Options:\n");
e953ef25	85	fprintf(ofp, " -h, --help Show this help\n");
679b4943	86	fprintf(ofp, " --list-options Simple listing of options\n");
32a6298d DG	87	fprintf(ofp, " -s, --session NAME Apply to session name\n");
32a6298d DG	88	fprintf(ofp, " -c, --channel NAME Apply to this channel\n");
9730260e	89	fprintf(ofp, " -a, --all-events Disable all tracepoints\n");
e953ef25	90	fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
27221701	91	fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
b9dfb167	92	fprintf(ofp, " -j, --jul Apply for Java application using JUL\n");
5cdb6027	93	fprintf(ofp, " -l, --log4j Apply to Java application using LOG4j\n");
0e115563	94	fprintf(ofp, " -p, --python Apply to Python application using logging\n");
e953ef25	95	fprintf(ofp, "\n");
9550ee81 JR	96	fprintf(ofp, "Event type options (Only supported with kernel domain):\n");
	97	fprintf(ofp, " --all All event types (default)\n");
	98	fprintf(ofp, " --tracepoint Tracepoint event\n");
6e911cad	99	fprintf(ofp, " --syscall System call event\n");
9550ee81 JR	100	fprintf(ofp, " --probe Probe event\n");
9550ee81 JR	101	fprintf(ofp, " --function Function event\n");
6e911cad	102	fprintf(ofp, "\n");
e953ef25 DG	103	}
e953ef25 DG	104
85076754 MD	105	static
	106	const char print_channel_name(const char name)
	107	{
	108	return name ? : DEFAULT_CHANNEL_NAME;
	109	}
	110
	111	static
	112	const char print_raw_channel_name(const char name)
	113	{
	114	return name ? : "<default>";
	115	}
	116
9550ee81 JR	117	static
	118	const char *print_event_type(const enum lttng_event_type ev_type)
	119	{
	120	switch (ev_type) {
	121	case LTTNG_EVENT_ALL:
	122	return "any";
	123	case LTTNG_EVENT_TRACEPOINT:
	124	return "tracepoint";
	125	case LTTNG_EVENT_PROBE:
	126	return "probe";
	127	case LTTNG_EVENT_FUNCTION:
	128	return "function";
	129	case LTTNG_EVENT_FUNCTION_ENTRY:
	130	return "function entry";
	131	case LTTNG_EVENT_SYSCALL:
	132	return "syscall";
	133	default:
	134	return "";
	135	}
	136	}
	137
e4d484a5 JRJ	138	/* Mi print a partial event.
	139	* enabled is 0 or 1
	140	* success is 0 or 1
	141	*/
	142	static int mi_print_event(char *event_name, int enabled, int success)
	143	{
	144	int ret;
	145
	146	assert(writer);
	147	assert(event_name);
	148
	149	/* Open event element */
	150	ret = mi_lttng_writer_open_element(writer, config_element_event);
	151	if (ret) {
	152	goto end;
	153	}
	154
	155	/* Print the name of event */
	156	ret = mi_lttng_writer_write_element_string(writer,
	157	config_element_name, event_name);
	158	if (ret) {
	159	goto end;
	160	}
	161
	162	/* Print enabled ? */
	163	ret = mi_lttng_writer_write_element_bool(writer,
	164	config_element_enabled, enabled);
	165	if (ret) {
	166	goto end;
	167	}
	168
	169	/* Success ? */
	170	ret = mi_lttng_writer_write_element_bool(writer,
	171	mi_lttng_element_command_success, success);
	172	if (ret) {
	173	goto end;
	174	}
	175
	176	/* Close event element */
	177	ret = mi_lttng_writer_close_element(writer);
	178	end:
	179	return ret;
	180	}
	181
e953ef25 DG	182	/*
	183	* disable_events
	184	*
	185	* Disabling event using the lttng API.
	186	*/
cd80958d	187	static int disable_events(char *session_name)
e953ef25	188	{
e4d484a5 JRJ	189	int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
e4d484a5 JRJ	190	int enabled = 1, success = 1;
b73d0b29	191	char event_name, channel_name = NULL;
7d29a247	192	struct lttng_domain dom;
6e911cad	193	struct lttng_event event;
e953ef25	194
441c16a7 MD	195	memset(&dom, 0, sizeof(dom));
441c16a7 MD	196
d78d6610	197	/* Create lttng domain */
7d29a247 DG	198	if (opt_kernel) {
7d29a247 DG	199	dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610	200	} else if (opt_userspace) {
9730260e	201	dom.type = LTTNG_DOMAIN_UST;
b9dfb167 DG	202	} else if (opt_jul) {
b9dfb167 DG	203	dom.type = LTTNG_DOMAIN_JUL;
5cdb6027 DG	204	} else if (opt_log4j) {
5cdb6027 DG	205	dom.type = LTTNG_DOMAIN_LOG4J;
0e115563 DG	206	} else if (opt_python) {
0e115563 DG	207	dom.type = LTTNG_DOMAIN_PYTHON;
9730260e	208	} else {
3ecec76a PP	209	/* Checked by the caller. */
3ecec76a PP	210	assert(0);
7d29a247 DG	211	}
7d29a247 DG	212
85076754	213	channel_name = opt_channel_name;
ae856491	214
cd80958d DG	215	handle = lttng_create_handle(session_name, &dom);
	216	if (handle == NULL) {
	217	ret = -1;
	218	goto error;
	219	}
	220
e4d484a5 JRJ	221	/* Mi print the channel and open the events element */
	222	if (lttng_opt_mi) {
	223	ret = mi_lttng_writer_open_element(writer, config_element_channel);
	224	if (ret) {
	225	ret = CMD_ERROR;
	226	goto end;
e953ef25 DG	227	}
e953ef25 DG	228
e4d484a5 JRJ	229	ret = mi_lttng_writer_write_element_string(writer,
	230	config_element_name, print_channel_name(channel_name));
	231	if (ret) {
	232	ret = CMD_ERROR;
	233	goto end;
	234	}
	235
	236	/* Open events element */
	237	ret = mi_lttng_writer_open_element(writer, config_element_events);
	238	if (ret) {
	239	ret = CMD_ERROR;
	240	goto end;
	241	}
e953ef25 DG	242	}
e953ef25 DG	243
6e911cad	244	memset(&event, 0, sizeof(event));
9b7431cf JG	245	/* Set default loglevel to any/unknown */
	246	event.loglevel = -1;
	247
9550ee81 JR	248	/* opt_event_type contain the event type to disable at this point */
9550ee81 JR	249	event.type = opt_event_type;
6e911cad	250
e4d484a5	251	if (opt_disable_all) {
6e911cad	252	command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
e4d484a5 JRJ	253	if (command_ret < 0) {
	254	ERR("%s", lttng_strerror(command_ret));
	255	enabled = 1;
	256	success = 0;
	257
9730260e	258	} else {
e4d484a5 JRJ	259	enabled = 0;
e4d484a5 JRJ	260	success = 1;
9550ee81	261	MSG("All %s events of type %s are disabled in channel %s",
6e911cad	262	get_domain_str(dom.type),
9550ee81	263	print_event_type(opt_event_type),
6e911cad	264	print_channel_name(channel_name));
9730260e DG	265	}
9730260e DG	266
e4d484a5 JRJ	267	if (lttng_opt_mi) {
	268	ret = mi_print_event("*", enabled, success);
	269	if (ret) {
	270	ret = CMD_ERROR;
	271	goto error;
	272	}
	273	}
	274	} else {
	275	/* Strip event list */
	276	event_name = strtok(opt_event_list, ",");
	277	while (event_name != NULL) {
	278	DBG("Disabling event %s", event_name);
e953ef25	279
6e911cad MD	280	strncpy(event.name, event_name, sizeof(event.name));
	281	event.name[sizeof(event.name) - 1] = '\0';
	282	command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
e4d484a5	283	if (command_ret < 0) {
9550ee81	284	ERR("%s of type %s : %s (channel %s, session %s)",
6e911cad	285	event_name,
9550ee81	286	print_event_type(opt_event_type),
e4d484a5 JRJ	287	lttng_strerror(command_ret),
	288	command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
	289	? print_raw_channel_name(channel_name)
	290	: print_channel_name(channel_name),
	291	session_name);
	292	warn = 1;
	293	success = 0;
	294	/*
6e911cad MD	295	* If an error occurred we assume that the event is still
6e911cad MD	296	* enabled.
e4d484a5 JRJ	297	*/
	298	enabled = 1;
	299	} else {
9550ee81	300	MSG("%s %s of type %s disabled in channel %s for session %s",
6e911cad	301	get_domain_str(dom.type),
6e911cad	302	event_name,
9550ee81	303	print_event_type(opt_event_type),
e4d484a5 JRJ	304	print_channel_name(channel_name),
	305	session_name);
	306	success = 1;
	307	enabled = 0;
	308	}
	309
	310	if (lttng_opt_mi) {
	311	ret = mi_print_event(event_name, enabled, success);
	312	if (ret) {
	313	ret = CMD_ERROR;
	314	goto error;
	315	}
	316	}
	317
	318	/* Next event */
	319	event_name = strtok(NULL, ",");
	320	}
	321	}
ae856491	322
9730260e	323	end:
e4d484a5 JRJ	324	if (lttng_opt_mi) {
	325	/* Close events element and channel element */
	326	ret = mi_lttng_close_multi_element(writer, 2);
	327	if (ret) {
	328	ret = CMD_ERROR;
	329	}
	330	}
e953ef25	331	error:
e4d484a5 JRJ	332	/* if there is already an error preserve it */
e4d484a5 JRJ	333	if (warn && !ret) {
ae856491 DG	334	ret = CMD_WARNING;
ae856491 DG	335	}
cd80958d	336
e4d484a5 JRJ	337	/* Overwrite ret if an error occurred */
	338	ret = command_ret ? command_ret : ret;
	339
	340	lttng_destroy_handle(handle);
e953ef25 DG	341	return ret;
	342	}
	343
	344	/*
	345	* cmd_disable_events
	346	*
	347	* Disable event to trace session
	348	*/
	349	int cmd_disable_events(int argc, const char **argv)
	350	{
e4d484a5	351	int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
e953ef25	352	static poptContext pc;
cd80958d	353	char *session_name = NULL;
6e911cad	354	int event_type = -1;
e953ef25 DG	355
	356	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	357	poptReadDefaultConfig(pc, 0);
	358
6e911cad MD	359	/* Default event type */
	360	opt_event_type = LTTNG_EVENT_ALL;
	361
e953ef25 DG	362	while ((opt = poptGetNextOpt(pc)) != -1) {
	363	switch (opt) {
	364	case OPT_HELP:
ca1c3607	365	usage(stdout);
e953ef25	366	goto end;
9550ee81	367	case OPT_TYPE_SYSCALL:
6e911cad MD	368	opt_event_type = LTTNG_EVENT_SYSCALL;
6e911cad MD	369	break;
9550ee81 JR	370	case OPT_TYPE_TRACEPOINT:
	371	opt_event_type = LTTNG_EVENT_TRACEPOINT;
	372	break;
	373	case OPT_TYPE_PROBE:
	374	opt_event_type = LTTNG_EVENT_PROBE;
	375	break;
	376	case OPT_TYPE_FUNCTION:
	377	opt_event_type = LTTNG_EVENT_FUNCTION;
	378	break;
	379	case OPT_TYPE_ALL:
	380	opt_event_type = LTTNG_EVENT_ALL;
	381	break;
679b4943 SM	382	case OPT_LIST_OPTIONS:
679b4943 SM	383	list_cmd_options(stdout, long_options);
679b4943	384	goto end;
e953ef25 DG	385	default:
	386	usage(stderr);
	387	ret = CMD_UNDEFINED;
	388	goto end;
	389	}
6e911cad MD	390
	391	/* Validate event type. Multiple event type are not supported. */
	392	if (event_type == -1) {
	393	event_type = opt_event_type;
	394	} else {
	395	if (event_type != opt_event_type) {
	396	ERR("Multiple event type not supported.");
	397	ret = CMD_ERROR;
	398	goto end;
	399	}
	400	}
e953ef25 DG	401	}
e953ef25 DG	402
3ecec76a PP	403	ret = print_missing_or_multiple_domains(
	404	opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python);
	405	if (ret) {
	406	ret = CMD_ERROR;
	407	goto end;
	408	}
	409
9550ee81 JR	410	/* Ust and agent only support ALL event type */
	411	if ((opt_userspace \|\| opt_jul \|\| opt_log4j \|\| opt_python)
	412	&& opt_event_type != LTTNG_EVENT_ALL) {
	413	ERR("UST and agent (-j \| -l \| -p) event(s) disabling based on event type is not supported.\n");
	414	usage(stderr);
	415	ret = CMD_ERROR;
	416	goto end;
	417	}
	418
e953ef25 DG	419	opt_event_list = (char*) poptGetArg(pc);
	420	if (opt_event_list == NULL && opt_disable_all == 0) {
	421	ERR("Missing event name(s).\n");
	422	usage(stderr);
ca1c3607	423	ret = CMD_ERROR;
e953ef25 DG	424	goto end;
	425	}
	426
cd80958d DG	427	if (!opt_session_name) {
	428	session_name = get_session_name();
	429	if (session_name == NULL) {
ca1c3607	430	ret = CMD_ERROR;
cd80958d DG	431	goto end;
	432	}
	433	} else {
	434	session_name = opt_session_name;
	435	}
	436
e4d484a5 JRJ	437	/* Mi check */
	438	if (lttng_opt_mi) {
	439	writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
	440	if (!writer) {
	441	ret = -LTTNG_ERR_NOMEM;
	442	goto end;
	443	}
	444
	445	/* Open command element */
	446	ret = mi_lttng_writer_command_open(writer,
	447	mi_lttng_element_command_disable_event);
	448	if (ret) {
	449	ret = CMD_ERROR;
	450	goto end;
	451	}
	452
	453	/* Open output element */
	454	ret = mi_lttng_writer_open_element(writer,
	455	mi_lttng_element_command_output);
	456	if (ret) {
	457	ret = CMD_ERROR;
	458	goto end;
	459	}
	460	}
	461
	462	command_ret = disable_events(session_name);
	463	if (command_ret) {
	464	success = 0;
	465	}
	466
	467	/* Mi closing */
	468	if (lttng_opt_mi) {
	469	/* Close output element */
	470	ret = mi_lttng_writer_close_element(writer);
	471	if (ret) {
	472	ret = CMD_ERROR;
	473	goto end;
	474	}
	475
	476	ret = mi_lttng_writer_write_element_bool(writer,
	477	mi_lttng_element_command_success, success);
	478	if (ret) {
	479	ret = CMD_ERROR;
	480	goto end;
	481	}
	482
	483	/* Command element close */
	484	ret = mi_lttng_writer_command_close(writer);
	485	if (ret) {
	486	ret = CMD_ERROR;
	487	goto end;
	488	}
	489	}
e953ef25 DG	490
e953ef25 DG	491	end:
5853fd43 DG	492	if (!opt_session_name && session_name) {
	493	free(session_name);
	494	}
e4d484a5 JRJ	495
	496	/* Mi clean-up */
	497	if (writer && mi_lttng_writer_destroy(writer)) {
	498	/* Preserve original error code */
	499	ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
	500	}
	501
	502	/* Overwrite ret if an error occured in disable_events */
	503	ret = command_ret ? command_ret : ret;
	504
ca1c3607	505	poptFreeContext(pc);
e953ef25 DG	506	return ret;
e953ef25 DG	507	}