[lttng-tools.git] / lttng / commands / list.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
 * as published by the Free Software Foundation; only version 2
 * of the License.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#define _GNU_SOURCE
#include <inttypes.h>
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../cmd.h"

static int opt_pid;
static int opt_userspace;
static int opt_kernel;
static char *opt_channel;
static int opt_domain;

const char *indent4 = "    ";
const char *indent6 = "      ";
const char *indent8 = "        ";

enum {
	OPT_HELP = 1,
};

static struct poptOption long_options[] = {
	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	{"help",      'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
	{"kernel",    'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
	{"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
	{"pid",       'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
	{"channel",   'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0},
	{"domain",    'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0},
	{0, 0, 0, 0, 0, 0, 0}
};

/*
 * usage
 */
static void usage(FILE *ofp)
{
	fprintf(ofp, "usage: lttng list [[-k] [-u] [-p PID] [SESSION [<options>]]]\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "With no arguments, list available tracing session(s)\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "With -k alone, list available kernel events\n");
	fprintf(ofp, "With -u alone, list available userspace events\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "  -h, --help              Show this help\n");
	fprintf(ofp, "  -k, --kernel            Select kernel domain\n");
	fprintf(ofp, "  -u, --userspace         Select user-space domain.\n");
	fprintf(ofp, "  -p, --pid PID           List user-space events by PID\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Options:\n");
	fprintf(ofp, "  -c, --channel NAME      List details of a channel\n");
	fprintf(ofp, "  -d, --domain            List available domain(s)\n");
	fprintf(ofp, "\n");
}

/*
 * Get command line from /proc for a specific pid.
 *
 * On success, return an allocated string pointer to the proc cmdline.
 * On error, return NULL.
 */
#ifdef DISABLE
static char *get_cmdline_by_pid(pid_t pid)
{
	int ret;
	FILE *fp;
	char *cmdline = NULL;
	char path[24];	/* Can't go bigger than /proc/65535/cmdline */

	snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
	fp = fopen(path, "r");
	if (fp == NULL) {
		goto end;
	}

	/* Caller must free() *cmdline */
	cmdline = malloc(PATH_MAX);
	ret = fread(cmdline, 1, PATH_MAX, fp);
	if (ret < 0) {
		perror("fread proc list");
	}
	fclose(fp);

end:
	return cmdline;
}
#endif /* DISABLE */

/*
 * Ask for all trace events in the kernel and pretty print them.
 */
static int list_kernel_events(void)
{
	int i, size;
	struct lttng_event *event_list;

	DBG("Getting all tracing events");

	size = lttng_list_kernel_events(&event_list);
	if (size < 0) {
		ERR("Unable to list kernel events");
		return size;
	}

	MSG("Kernel events:\n-------------");

	for (i = 0; i < size; i++) {
		MSG("  %s", event_list[i].name);
	}

	free(event_list);

	return CMD_SUCCESS;
}

/*
 * List events of channel of session and domain.
 */
static int list_events(struct lttng_domain *dom,
		const char *session_name, const char *channel_name)
{
	int ret, count, i;
	struct lttng_event *events = NULL;

	count = lttng_list_events(dom, session_name, channel_name, &events);
	if (count < 0) {
		ret = count;
		goto error;
	}

	MSG("\n%sEvents:", indent4);
	if (count == 0) {
		MSG("%sNone", indent6);
		goto end;
	}

	for (i = 0; i < count; i++) {
		switch (events[i].type) {
			case LTTNG_EVENT_TRACEPOINT:
				MSG("%s%s (type: tracepoint) [enabled: %d]", indent6,
						events[i].name, events[i].enabled);
				break;
			case LTTNG_EVENT_PROBE:
				MSG("%s%s (type: probe) [enabled: %d]", indent6,
						events[i].name, events[i].enabled);
				if (events[i].attr.probe.addr != 0) {
					MSG("%saddr: 0x%" PRIx64, indent8, events[i].attr.probe.addr);
				} else {
					MSG("%soffset: 0x%" PRIx64, indent8, events[i].attr.probe.offset);
					MSG("%ssymbol: %s", indent8, events[i].attr.probe.symbol_name);
				}
				break;
			case LTTNG_EVENT_FUNCTION:
			case LTTNG_EVENT_FUNCTION_ENTRY:
				MSG("%s%s (type: function) [enabled: %d]", indent6,
						events[i].name, events[i].enabled);
				MSG("%ssymbol: \"%s\"", indent8, events[i].attr.ftrace.symbol_name);
				break;
		}
	}

	MSG("");

end:
	if (events) {
		free(events);
	}
	ret = CMD_SUCCESS;

error:
	return ret;
}

/*
 * Pretty print channel
 */
static void print_channel(struct lttng_channel *channel)
{
	MSG("- %s (enabled: %d):\n", channel->name, channel->enabled);

	MSG("%sAttributes:", indent4);
	MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite);
	MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size);
	MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf);
	MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval);
	MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval);
	switch (channel->attr.output) {
		case LTTNG_EVENT_SPLICE:
			MSG("%soutput: splice()", indent6);
			break;
		case LTTNG_EVENT_MMAP:
			MSG("%soutput: mmap()", indent6);
			break;
	}
}

/*
 * List channel(s) of session and domain.
 *
 * If channel_name is NULL, all channels are listed.
 */
static int list_channels(struct lttng_domain *dom,
		const char *session_name, const char *channel_name)
{
	int count, i, ret = CMD_SUCCESS;
	unsigned int chan_found = 0;
	struct lttng_channel *channels = NULL;

	DBG("Listing channel(s) (%s)", channel_name);

	count = lttng_list_channels(dom, session_name, &channels);
	if (count < 0) {
		ret = count;
		goto error;
	} else if (count == 0) {
		MSG("No channel found");
		goto end;
	}

	if (channel_name == NULL) {
		MSG("Channels:\n-------------");
	}

	for (i = 0; i < count; i++) {
		if (channel_name != NULL) {
			if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) {
				chan_found = 1;
			} else {
				continue;
			}
		}
		print_channel(&channels[i]);

		/* Listing events per channel */
		ret = list_events(dom, session_name, channels[i].name);
		if (ret < 0) {
			MSG("%s", lttng_get_readable_code(ret));
		}

		if (chan_found) {
			break;
		}
	}

	if (!chan_found && channel_name != NULL) {
		MSG("Channel %s not found", channel_name);
	}

end:
	free(channels);
	ret = CMD_SUCCESS;

error:
	return ret;
}

/*
 * List available tracing session. List only basic information.
 *
 * If session_name is NULL, all sessions are listed.
 */
static int list_sessions(const char *session_name)
{
	int ret, count, i;
	unsigned int session_found = 0;
	struct lttng_session *sessions;

	count = lttng_list_sessions(&sessions);
	DBG("Session count %d", count);
	if (count < 0) {
		ret = count;
		goto error;
	}

	if (session_name == NULL) {
		MSG("Available tracing sessions:");
	}

	for (i = 0; i < count; i++) {
		if (session_name != NULL) {
			if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
				session_found = 1;
				MSG("Tracing session %s:", session_name);
				MSG("%sTrace path: %s\n", indent4, sessions[i].path);
				break;
			}
		}

		MSG("  %d) %s (%s)", i + 1, sessions[i].name, sessions[i].path);

		if (session_found) {
			break;
		}
	}

	free(sessions);

	if (!session_found && session_name != NULL) {
		MSG("Session %s not found", session_name);
	}

	if (session_name == NULL) {
		MSG("\nUse lttng list -s <session_name> for a detail listing");
	}

	return CMD_SUCCESS;

error:
	return ret;
}

/*
 * List available domain(s) for a session.
 */
static int list_domains(const char *session_name)
{
	int i, count, ret = CMD_SUCCESS;
	struct lttng_domain *domains = NULL;

	MSG("Domains:\n-------------");

	count = lttng_list_domains(session_name, &domains);
	if (count < 0) {
		ret = count;
		goto error;
	} else if (count == 0) {
		MSG("  None");
		goto end;
	}

	for (i = 0; i < count; i++) {
		switch (domains[i].type) {
		case LTTNG_DOMAIN_KERNEL:
			MSG("  - Kernel");
		default:
			break;
		}
	}

end:
	free(domains);

error:
	return ret;
}

/*
 * The 'list <options>' first level command
 */
int cmd_list(int argc, const char **argv)
{
	int opt, i, ret = CMD_SUCCESS;
	const char *session_name;
	static poptContext pc;
	struct lttng_domain domain;
	struct lttng_domain *domains = NULL;

	if (argc < 1) {
		usage(stderr);
		goto end;
	}

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

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		case OPT_HELP:
			usage(stderr);
			goto end;
		default:
			usage(stderr);
			ret = CMD_UNDEFINED;
			goto end;
		}
	}

	if (opt_userspace || opt_pid != 0) {
		MSG("*** Userspace tracing not implemented ***\n");
	}

	/* Get session name (trailing argument) */
	session_name = poptGetArg(pc);
	DBG("Session name: %s", session_name);

	if (session_name == NULL) {
		if (opt_kernel) {
			ret = list_kernel_events();
			if (ret < 0) {
				goto end;
			}
		} else {
			ret = list_sessions(NULL);
			if (ret < 0) {
				goto end;
			}
		}
	} else {
		/* List session attributes */
		ret = list_sessions(session_name);
		if (ret < 0) {
			goto end;
		}

		/* Domain listing */
		if (opt_domain) {
			ret = list_domains(session_name);
			goto end;
		}

		if (opt_kernel) {
			domain.type = LTTNG_DOMAIN_KERNEL;
			/* Channel listing */
			ret = list_channels(&domain, session_name, opt_channel);
			if (ret < 0) {
				goto end;
			}
		} else if (opt_userspace) {
			/* TODO: Userspace domain */
		} else {
			/* We want all domain(s) */
			ret = lttng_list_domains(session_name, &domains);
			if (ret < 0) {
				goto end;
			}

			for (i = 0; i < ret; i++) {
				switch (domains[i].type) {
				case LTTNG_DOMAIN_KERNEL:
					MSG("=== Domain: Kernel ===\n");
					break;
				default:
					MSG("=== Domain: Unimplemented ===\n");
					break;
				}

				ret = list_channels(&domains[i], session_name, opt_channel);
				if (ret < 0) {
					goto end;
				}
			}
		}
	}

end:
	if (domains) {
		free(domains);
	}
	return ret;
}
Commit	Line	Data
f3ed775e DG	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
82a3637f DG	6	* as published by the Free Software Foundation; only version 2
82a3637f DG	7	* of the License.
f3ed775e DG	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*/
	18
	19	#define _GNU_SOURCE
9f19cc17	20	#include <inttypes.h>
f3ed775e DG	21	#include <popt.h>
	22	#include <stdio.h>
	23	#include <stdlib.h>
	24	#include <string.h>
	25
6e2d116c	26	#include "../cmd.h"
f3ed775e DG	27
f3ed775e DG	28	static int opt_pid;
9f19cc17 DG	29	static int opt_userspace;
	30	static int opt_kernel;
	31	static char *opt_channel;
	32	static int opt_domain;
	33
	34	const char *indent4 = " ";
	35	const char *indent6 = " ";
	36	const char *indent8 = " ";
f3ed775e DG	37
	38	enum {
	39	OPT_HELP = 1,
f3ed775e DG	40	};
	41
	42	static struct poptOption long_options[] = {
	43	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	44	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
9f19cc17 DG	45	{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
	46	{"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
	47	{"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
	48	{"channel", 'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0},
	49	{"domain", 'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0},
f3ed775e DG	50	{0, 0, 0, 0, 0, 0, 0}
	51	};
	52
	53	/*
	54	* usage
	55	*/
	56	static void usage(FILE *ofp)
	57	{
9f19cc17 DG	58	fprintf(ofp, "usage: lttng list [[-k] [-u] [-p PID] [SESSION [<options>]]]\n");
	59	fprintf(ofp, "\n");
	60	fprintf(ofp, "With no arguments, list available tracing session(s)\n");
	61	fprintf(ofp, "\n");
	62	fprintf(ofp, "With -k alone, list available kernel events\n");
	63	fprintf(ofp, "With -u alone, list available userspace events\n");
	64	fprintf(ofp, "\n");
	65	fprintf(ofp, " -h, --help Show this help\n");
	66	fprintf(ofp, " -k, --kernel Select kernel domain\n");
	67	fprintf(ofp, " -u, --userspace Select user-space domain.\n");
	68	fprintf(ofp, " -p, --pid PID List user-space events by PID\n");
f3ed775e	69	fprintf(ofp, "\n");
9f19cc17 DG	70	fprintf(ofp, "Options:\n");
	71	fprintf(ofp, " -c, --channel NAME List details of a channel\n");
	72	fprintf(ofp, " -d, --domain List available domain(s)\n");
f3ed775e DG	73	fprintf(ofp, "\n");
	74	}
	75
	76	/*
9f19cc17	77	* Get command line from /proc for a specific pid.
f3ed775e	78	*
9f19cc17 DG	79	* On success, return an allocated string pointer to the proc cmdline.
9f19cc17 DG	80	* On error, return NULL.
f3ed775e	81	*/
9f19cc17	82	#ifdef DISABLE
f3ed775e DG	83	static char *get_cmdline_by_pid(pid_t pid)
	84	{
	85	int ret;
	86	FILE *fp;
	87	char *cmdline = NULL;
	88	char path[24]; /* Can't go bigger than /proc/65535/cmdline */
	89
	90	snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
	91	fp = fopen(path, "r");
	92	if (fp == NULL) {
	93	goto end;
	94	}
	95
	96	/* Caller must free() cmdline /
	97	cmdline = malloc(PATH_MAX);
	98	ret = fread(cmdline, 1, PATH_MAX, fp);
f40799e8 DG	99	if (ret < 0) {
	100	perror("fread proc list");
	101	}
f3ed775e DG	102	fclose(fp);
	103
	104	end:
	105	return cmdline;
	106	}
9f19cc17	107	#endif /* DISABLE */
f3ed775e DG	108
f3ed775e DG	109	/*
9f19cc17	110	* Ask for all trace events in the kernel and pretty print them.
f3ed775e	111	*/
9f19cc17	112	static int list_kernel_events(void)
f3ed775e	113	{
9f19cc17 DG	114	int i, size;
9f19cc17 DG	115	struct lttng_event *event_list;
f3ed775e DG	116
	117	DBG("Getting all tracing events");
	118
9f19cc17 DG	119	size = lttng_list_kernel_events(&event_list);
	120	if (size < 0) {
	121	ERR("Unable to list kernel events");
	122	return size;
f3ed775e DG	123	}
f3ed775e DG	124
9f19cc17	125	MSG("Kernel events:\n-------------");
f3ed775e	126
9f19cc17 DG	127	for (i = 0; i < size; i++) {
9f19cc17 DG	128	MSG(" %s", event_list[i].name);
f3ed775e DG	129	}
	130
	131	free(event_list);
	132
	133	return CMD_SUCCESS;
	134	}
	135
	136	/*
9f19cc17	137	* List events of channel of session and domain.
f3ed775e	138	*/
9f19cc17 DG	139	static int list_events(struct lttng_domain *dom,
9f19cc17 DG	140	const char session_name, const char channel_name)
f3ed775e DG	141	{
f3ed775e DG	142	int ret, count, i;
9f19cc17	143	struct lttng_event *events = NULL;
f3ed775e	144
9f19cc17	145	count = lttng_list_events(dom, session_name, channel_name, &events);
f3ed775e DG	146	if (count < 0) {
	147	ret = count;
	148	goto error;
	149	}
	150
9f19cc17 DG	151	MSG("\n%sEvents:", indent4);
	152	if (count == 0) {
	153	MSG("%sNone", indent6);
	154	goto end;
	155	}
	156
f3ed775e	157	for (i = 0; i < count; i++) {
9f19cc17 DG	158	switch (events[i].type) {
	159	case LTTNG_EVENT_TRACEPOINT:
	160	MSG("%s%s (type: tracepoint) [enabled: %d]", indent6,
	161	events[i].name, events[i].enabled);
	162	break;
	163	case LTTNG_EVENT_PROBE:
	164	MSG("%s%s (type: probe) [enabled: %d]", indent6,
	165	events[i].name, events[i].enabled);
	166	if (events[i].attr.probe.addr != 0) {
	167	MSG("%saddr: 0x%" PRIx64, indent8, events[i].attr.probe.addr);
	168	} else {
	169	MSG("%soffset: 0x%" PRIx64, indent8, events[i].attr.probe.offset);
	170	MSG("%ssymbol: %s", indent8, events[i].attr.probe.symbol_name);
	171	}
	172	break;
	173	case LTTNG_EVENT_FUNCTION:
	174	case LTTNG_EVENT_FUNCTION_ENTRY:
	175	MSG("%s%s (type: function) [enabled: %d]", indent6,
	176	events[i].name, events[i].enabled);
	177	MSG("%ssymbol: \"%s\"", indent8, events[i].attr.ftrace.symbol_name);
	178	break;
	179	}
f3ed775e DG	180	}
f3ed775e DG	181
9f19cc17	182	MSG("");
f3ed775e	183
9f19cc17 DG	184	end:
	185	if (events) {
	186	free(events);
	187	}
	188	ret = CMD_SUCCESS;
f3ed775e DG	189
	190	error:
	191	return ret;
	192	}
	193
	194	/*
9f19cc17 DG	195	* Pretty print channel
	196	*/
	197	static void print_channel(struct lttng_channel *channel)
	198	{
	199	MSG("- %s (enabled: %d):\n", channel->name, channel->enabled);
	200
	201	MSG("%sAttributes:", indent4);
	202	MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite);
	203	MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size);
	204	MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf);
	205	MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval);
	206	MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval);
	207	switch (channel->attr.output) {
	208	case LTTNG_EVENT_SPLICE:
	209	MSG("%soutput: splice()", indent6);
	210	break;
	211	case LTTNG_EVENT_MMAP:
	212	MSG("%soutput: mmap()", indent6);
	213	break;
	214	}
	215	}
	216
	217	/*
	218	* List channel(s) of session and domain.
f3ed775e	219	*
9f19cc17	220	* If channel_name is NULL, all channels are listed.
f3ed775e	221	*/
9f19cc17 DG	222	static int list_channels(struct lttng_domain *dom,
9f19cc17 DG	223	const char session_name, const char channel_name)
f3ed775e	224	{
9f19cc17 DG	225	int count, i, ret = CMD_SUCCESS;
	226	unsigned int chan_found = 0;
	227	struct lttng_channel *channels = NULL;
f3ed775e	228
9f19cc17 DG	229	DBG("Listing channel(s) (%s)", channel_name);
	230
	231	count = lttng_list_channels(dom, session_name, &channels);
f3ed775e DG	232	if (count < 0) {
	233	ret = count;
	234	goto error;
9f19cc17 DG	235	} else if (count == 0) {
	236	MSG("No channel found");
	237	goto end;
f3ed775e DG	238	}
f3ed775e DG	239
9f19cc17 DG	240	if (channel_name == NULL) {
	241	MSG("Channels:\n-------------");
	242	}
	243
	244	for (i = 0; i < count; i++) {
	245	if (channel_name != NULL) {
	246	if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) {
	247	chan_found = 1;
	248	} else {
	249	continue;
	250	}
	251	}
	252	print_channel(&channels[i]);
	253
	254	/* Listing events per channel */
	255	ret = list_events(dom, session_name, channels[i].name);
	256	if (ret < 0) {
	257	MSG("%s", lttng_get_readable_code(ret));
	258	}
	259
	260	if (chan_found) {
	261	break;
f3ed775e	262	}
f3ed775e DG	263	}
f3ed775e DG	264
9f19cc17 DG	265	if (!chan_found && channel_name != NULL) {
	266	MSG("Channel %s not found", channel_name);
	267	}
f3ed775e	268
9f19cc17 DG	269	end:
	270	free(channels);
	271	ret = CMD_SUCCESS;
f3ed775e DG	272
	273	error:
	274	return ret;
	275	}
	276
	277	/*
9f19cc17	278	* List available tracing session. List only basic information.
f3ed775e	279	*
9f19cc17	280	* If session_name is NULL, all sessions are listed.
f3ed775e	281	*/
9f19cc17	282	static int list_sessions(const char *session_name)
f3ed775e	283	{
9f19cc17 DG	284	int ret, count, i;
	285	unsigned int session_found = 0;
	286	struct lttng_session *sessions;
	287
	288	count = lttng_list_sessions(&sessions);
	289	DBG("Session count %d", count);
	290	if (count < 0) {
	291	ret = count;
	292	goto error;
	293	}
	294
	295	if (session_name == NULL) {
	296	MSG("Available tracing sessions:");
	297	}
	298
	299	for (i = 0; i < count; i++) {
	300	if (session_name != NULL) {
	301	if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
	302	session_found = 1;
	303	MSG("Tracing session %s:", session_name);
	304	MSG("%sTrace path: %s\n", indent4, sessions[i].path);
	305	break;
	306	}
	307	}
	308
	309	MSG(" %d) %s (%s)", i + 1, sessions[i].name, sessions[i].path);
	310
	311	if (session_found) {
	312	break;
	313	}
	314	}
	315
	316	free(sessions);
	317
	318	if (!session_found && session_name != NULL) {
	319	MSG("Session %s not found", session_name);
	320	}
	321
	322	if (session_name == NULL) {
	323	MSG("\nUse lttng list -s <session_name> for a detail listing");
	324	}
f3ed775e DG	325
	326	return CMD_SUCCESS;
	327
	328	error:
	329	return ret;
	330	}
f3ed775e DG	331
f3ed775e DG	332	/*
9f19cc17	333	* List available domain(s) for a session.
f3ed775e	334	*/
9f19cc17	335	static int list_domains(const char *session_name)
f3ed775e	336	{
9f19cc17 DG	337	int i, count, ret = CMD_SUCCESS;
	338	struct lttng_domain *domains = NULL;
	339
	340	MSG("Domains:\n-------------");
	341
	342	count = lttng_list_domains(session_name, &domains);
	343	if (count < 0) {
	344	ret = count;
	345	goto error;
	346	} else if (count == 0) {
	347	MSG(" None");
	348	goto end;
	349	}
	350
	351	for (i = 0; i < count; i++) {
	352	switch (domains[i].type) {
	353	case LTTNG_DOMAIN_KERNEL:
	354	MSG(" - Kernel");
	355	default:
	356	break;
	357	}
	358	}
	359
	360	end:
	361	free(domains);
	362
	363	error:
	364	return ret;
f3ed775e	365	}
f3ed775e DG	366
f3ed775e DG	367	/*
9f19cc17	368	* The 'list <options>' first level command
f3ed775e DG	369	*/
	370	int cmd_list(int argc, const char **argv)
	371	{
9f19cc17 DG	372	int opt, i, ret = CMD_SUCCESS;
9f19cc17 DG	373	const char *session_name;
f3ed775e	374	static poptContext pc;
9f19cc17 DG	375	struct lttng_domain domain;
9f19cc17 DG	376	struct lttng_domain *domains = NULL;
f3ed775e	377
9f19cc17	378	if (argc < 1) {
f3ed775e DG	379	usage(stderr);
	380	goto end;
	381	}
	382
	383	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	384	poptReadDefaultConfig(pc, 0);
	385
	386	while ((opt = poptGetNextOpt(pc)) != -1) {
	387	switch (opt) {
	388	case OPT_HELP:
	389	usage(stderr);
	390	goto end;
f3ed775e DG	391	default:
	392	usage(stderr);
	393	ret = CMD_UNDEFINED;
	394	goto end;
	395	}
	396	}
	397
9f19cc17 DG	398	if (opt_userspace \|\| opt_pid != 0) {
9f19cc17 DG	399	MSG("* Userspace tracing not implemented *\n");
f3ed775e DG	400	}
f3ed775e DG	401
9f19cc17 DG	402	/* Get session name (trailing argument) */
	403	session_name = poptGetArg(pc);
	404	DBG("Session name: %s", session_name);
	405
	406	if (session_name == NULL) {
	407	if (opt_kernel) {
	408	ret = list_kernel_events();
	409	if (ret < 0) {
	410	goto end;
	411	}
	412	} else {
	413	ret = list_sessions(NULL);
	414	if (ret < 0) {
	415	goto end;
	416	}
	417	}
	418	} else {
	419	/* List session attributes */
	420	ret = list_sessions(session_name);
	421	if (ret < 0) {
	422	goto end;
	423	}
	424
	425	/* Domain listing */
	426	if (opt_domain) {
	427	ret = list_domains(session_name);
	428	goto end;
	429	}
	430
	431	if (opt_kernel) {
	432	domain.type = LTTNG_DOMAIN_KERNEL;
	433	/* Channel listing */
	434	ret = list_channels(&domain, session_name, opt_channel);
	435	if (ret < 0) {
	436	goto end;
	437	}
	438	} else if (opt_userspace) {
	439	/* TODO: Userspace domain */
	440	} else {
	441	/* We want all domain(s) */
	442	ret = lttng_list_domains(session_name, &domains);
	443	if (ret < 0) {
	444	goto end;
	445	}
	446
	447	for (i = 0; i < ret; i++) {
	448	switch (domains[i].type) {
	449	case LTTNG_DOMAIN_KERNEL:
	450	MSG("=== Domain: Kernel ===\n");
	451	break;
	452	default:
	453	MSG("=== Domain: Unimplemented ===\n");
	454	break;
	455	}
	456
	457	ret = list_channels(&domains[i], session_name, opt_channel);
	458	if (ret < 0) {
	459	goto end;
	460	}
	461	}
	462	}
f3ed775e DG	463	}
	464
	465	end:
9f19cc17 DG	466	if (domains) {
	467	free(domains);
	468	}
f3ed775e DG	469	return ret;
f3ed775e DG	470	}