[ust.git] / ustctl / ustctl.c

/* Copyright (C) 2009  Pierre-Marc Fournier
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <stdlib.h>
#include <fcntl.h>

#include "ustcomm.h"
#include "ustcmd.h"
#include "usterr.h"

enum command {
	CREATE_TRACE=1000,
	ALLOC_TRACE,
	START_TRACE,
	STOP_TRACE,
	DESTROY_TRACE,
	LIST_MARKERS,
	ENABLE_MARKER,
	DISABLE_MARKER,
	GET_ONLINE_PIDS,
	SET_SUBBUF_SIZE,
	SET_SUBBUF_NUM,
	GET_SUBBUF_SIZE,
	GET_SUBBUF_NUM,
	GET_SOCK_PATH,
	SET_SOCK_PATH,
	FORCE_SWITCH,
	UNKNOWN
};

struct ust_opts {
	enum command cmd;
	pid_t *pids;
	char *regex;
};

char *progname = NULL;

void usage(void)
{
	fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname);
	fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\
\n\
Commands:\n\
    --create-trace\t\t\tCreate trace\n\
    --alloc-trace\t\t\tAlloc trace\n\
    --start-trace\t\t\tStart tracing\n\
    --stop-trace\t\t\tStop tracing\n\
    --destroy-trace\t\t\tDestroy the trace\n\
    --set-subbuf-size \"CHANNEL/bytes\"\tSet the size of subbuffers per channel\n\
    --set-subbuf-num \"CHANNEL/n\"\tSet the number of subbuffers per channel\n\
    --set-sock-path\t\t\tSet the path of the daemon socket\n\
    --get-subbuf-size \"CHANNEL\"\t\tGet the size of subbuffers per channel\n\
    --get-subbuf-num \"CHANNEL\"\t\tGet the number of subbuffers per channel\n\
    --get-sock-path\t\t\tGet the path of the daemon socket\n\
    --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\
    --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\
    --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t  state and format string\n\
    --force-switch\t\t\tForce a subbuffer switch\n\
\
");
}

int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
{
	int c;

	opts->pids = NULL;
	opts->regex = NULL;

	while (1) {
		int option_index = 0;
		static struct option long_options[] = {
			{ "create-trace", 0, 0, CREATE_TRACE },
			{ "alloc-trace", 0, 0, ALLOC_TRACE },
			{ "start-trace", 0, 0, START_TRACE },
			{ "stop-trace", 0, 0, STOP_TRACE },
			{ "destroy-trace", 0, 0, DESTROY_TRACE },
			{ "list-markers", 0, 0, LIST_MARKERS },
			{ "enable-marker", 1, 0, ENABLE_MARKER },
			{ "disable-marker", 1, 0, DISABLE_MARKER },
			{ "help", 0, 0, 'h' },
			{ "online-pids", 0, 0, GET_ONLINE_PIDS },
			{ "set-subbuf-size", 1, 0, SET_SUBBUF_SIZE },
			{ "set-subbuf-num", 1, 0, SET_SUBBUF_NUM },
			{ "get-subbuf-size", 1, 0, GET_SUBBUF_SIZE },
			{ "get-subbuf-num", 1, 0, GET_SUBBUF_NUM },
			{ "get-sock-path", 0, 0, GET_SOCK_PATH },
			{ "set-sock-path", 1, 0, SET_SOCK_PATH },
			{ "force-switch", 0, 0, FORCE_SWITCH },
			{ 0, 0, 0, 0 }
		};

		c = getopt_long(argc, argv, "h", long_options, &option_index);
		if (c == -1)
			break;

		if(c >= 1000)
			opts->cmd = c;

		switch (c) {
		case 0:
			printf("option %s", long_options[option_index].name);
			if (optarg)
				printf(" with arg %s", optarg);
			printf("\n");
			break;

		case ENABLE_MARKER:
		case DISABLE_MARKER:
		case SET_SUBBUF_SIZE:
		case SET_SUBBUF_NUM:
		case GET_SUBBUF_SIZE:
		case GET_SUBBUF_NUM:
		case SET_SOCK_PATH:
			opts->regex = strdup(optarg);
			break;

		case 'h':
			usage();
			exit(0);

		case '?':
			fprintf(stderr, "Invalid argument\n\n");
			usage();
			exit(1);
		}
	}

	if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) {
		int i;
		int pididx=0;
		opts->pids = malloc((argc-optind+1) * sizeof(pid_t));

		for(i=optind; i<argc; i++) {
			/* don't take any chances, use a long long */
			long long tmp;
			char *endptr;
			tmp = strtoull(argv[i], &endptr, 10);
			if(*endptr != '\0') {
				ERR("The pid \"%s\" is invalid.", argv[i]);
				return 1;
			}
			opts->pids[pididx++] = (pid_t) tmp;
		}
		opts->pids[pididx] = -1;
	}

	return 0;
}

int main(int argc, char *argv[])
{
	pid_t *pidit;
	int result;
	char *tmp;
	struct ust_opts opts;

	progname = argv[0];

	if(argc <= 1) {
		fprintf(stderr, "No operation specified.\n");
		usage();
		exit(EXIT_FAILURE);
	}

	result = parse_opts_long(argc, argv, &opts);
	if(result) {
		fprintf(stderr, "\n");
		usage();
		exit(EXIT_FAILURE);
	}

	if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) {
		fprintf(stderr, "No pid specified.\n");
		usage();
		exit(EXIT_FAILURE);
	}
	if(opts.cmd == UNKNOWN) {
		fprintf(stderr, "No command specified.\n");
		usage();
		exit(EXIT_FAILURE);
	}
	if (opts.cmd == GET_ONLINE_PIDS) {
		pid_t *pp = ustcmd_get_online_pids();
		unsigned int i = 0;

		if (pp) {
			while (pp[i] != 0) {
				printf("%u\n", (unsigned int) pp[i]);
				++i;
			}
			free(pp);
		}

		exit(EXIT_SUCCESS);
	}

	pidit = opts.pids;
	struct marker_status *cmsf = NULL;

	while(*pidit != -1) {
		switch (opts.cmd) {
			case CREATE_TRACE:
				result = ustcmd_create_trace(*pidit);
				if (result) {
					ERR("error while trying to create trace with PID %u\n", (unsigned int) *pidit);
					break;
				}
				break;

			case START_TRACE:
				result = ustcmd_start_trace(*pidit);
				if (result) {
					ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit);
					break;
				}
				break;

			case STOP_TRACE:
				result = ustcmd_stop_trace(*pidit);
				if (result) {
					ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit);
					break;
				}
				break;

			case DESTROY_TRACE:
				result = ustcmd_destroy_trace(*pidit);
				if (result) {
					ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit);
					break;
				}
				break;

			case LIST_MARKERS:
				cmsf = NULL;
				if (ustcmd_get_cmsf(&cmsf, *pidit)) {
					fprintf(stderr,
						"error while trying to list markers for"
						" PID %u\n", (unsigned int) *pidit);
					break;
				}
				unsigned int i = 0;
				while (cmsf[i].channel != NULL) {
					printf("{PID: %u, channel/marker: %s/%s, "
						"state: %u, fmt: %s}\n",
						(unsigned int) *pidit,
						cmsf[i].channel,
						cmsf[i].marker,
						cmsf[i].state,
						cmsf[i].fs);
					++i;
				}
				ustcmd_free_cmsf(cmsf);
				break;

			case ENABLE_MARKER:
				if(opts.regex)
					ustcmd_set_marker_state(opts.regex, 1, *pidit);
				break;
			case DISABLE_MARKER:
				if(opts.regex)
					ustcmd_set_marker_state(opts.regex, 0, *pidit);
				break;

			case SET_SUBBUF_SIZE:
				ustcmd_set_subbuf_size(opts.regex, *pidit);
				break;

			case SET_SUBBUF_NUM:
				ustcmd_set_subbuf_num(opts.regex, *pidit);
				break;

			case GET_SUBBUF_SIZE:
				result = ustcmd_get_subbuf_size(opts.regex, *pidit);
				if (result == -1) {
					ERR("error while trying to get_subuf_size with PID %u\n", (unsigned int) *pidit);
					break;
				}

				printf("the size of subbufers is %d\n", result);
				break;

			case GET_SUBBUF_NUM:
				result = ustcmd_get_subbuf_num(opts.regex, *pidit);
				if (result == -1) {
					ERR("error while trying to get_subuf_num with PID %u\n", (unsigned int) *pidit);
					break;
				}

				printf("the number of subbufers is %d\n", result);
				break;

			case ALLOC_TRACE:
				result = ustcmd_alloc_trace(*pidit);
				if (result) {
					ERR("error while trying to alloc trace with PID %u\n", (unsigned int) *pidit);
					break;
				}
				break;

			case GET_SOCK_PATH:
				result = ustcmd_get_sock_path(&tmp, *pidit);
				if (result) {
					ERR("error while trying to get sock path for PID %u\n", (unsigned int) *pidit);
					break;
				}
				printf("the socket path is %s\n", tmp);
				free(tmp);
				break;

			case SET_SOCK_PATH:
				result = ustcmd_set_sock_path(opts.regex, *pidit);
				if (result) {
					ERR("error while trying to set sock path for PID %u\n", (unsigned int) *pidit);
				}
				break;

			case FORCE_SWITCH:
				result = ustcmd_force_switch(*pidit);
				if (result) {
					ERR("error while trying to force switch for PID %u\n", (unsigned int) *pidit);
				}
				break;

			default:
				ERR("unknown command\n");
			break;
		}

		pidit++;
	}

	if (opts.pids != NULL) {
		free(opts.pids);
	}
	if (opts.regex != NULL) {
		free(opts.regex);
	}

	return 0;
}
Commit	Line	Data
c39c72ee PMF	1	/* Copyright (C) 2009 Pierre-Marc Fournier
	2	*
	3	* This library is free software; you can redistribute it and/or
	4	* modify it under the terms of the GNU Lesser General Public
	5	* License as published by the Free Software Foundation; either
	6	* version 2.1 of the License, or (at your option) any later version.
	7	*
	8	* This library 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 GNU
	11	* Lesser General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU Lesser General Public
	14	* License along with this library; if not, write to the Free Software
	15	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	16	*/
	17
872037bb PMF	18	#define _GNU_SOURCE
872037bb PMF	19	#include <stdio.h>
fbd8191b PMF	20	#include <unistd.h>
	21	#include <getopt.h>
	22	#include <stdlib.h>
fbd8191b	23	#include <fcntl.h>
fbd8191b	24
f9e5ce61	25	#include "ustcomm.h"
ae937656	26	#include "ustcmd.h"
2028e7fd	27	#include "usterr.h"
ae937656 PP	28
ae937656 PP	29	enum command {
b0a5a08b PMF	30	CREATE_TRACE=1000,
b0a5a08b PMF	31	ALLOC_TRACE,
ae937656 PP	32	START_TRACE,
ae937656 PP	33	STOP_TRACE,
b0a5a08b	34	DESTROY_TRACE,
ae937656 PP	35	LIST_MARKERS,
	36	ENABLE_MARKER,
	37	DISABLE_MARKER,
	38	GET_ONLINE_PIDS,
763f41e5 DS	39	SET_SUBBUF_SIZE,
763f41e5 DS	40	SET_SUBBUF_NUM,
e77b8e8e DS	41	GET_SUBBUF_SIZE,
e77b8e8e DS	42	GET_SUBBUF_NUM,
b2fb2f91 AH	43	GET_SOCK_PATH,
b2fb2f91 AH	44	SET_SOCK_PATH,
b9318b35	45	FORCE_SWITCH,
ae937656	46	UNKNOWN
ef290fca	47	};
fbd8191b	48
52c51a47	49	struct ust_opts {
ae937656	50	enum command cmd;
52c51a47	51	pid_t *pids;
08230db7	52	char *regex;
52c51a47 PMF	53	};
52c51a47 PMF	54
fd2fb4f9 PMF	55	char *progname = NULL;
	56
	57	void usage(void)
	58	{
ae937656	59	fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname);
fd2fb4f9 PMF	60	fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\
	61	\n\
	62	Commands:\n\
62ec620f	63	--create-trace\t\t\tCreate trace\n\
4ed9f99d	64	--alloc-trace\t\t\tAlloc trace\n\
fd2fb4f9 PMF	65	--start-trace\t\t\tStart tracing\n\
	66	--stop-trace\t\t\tStop tracing\n\
	67	--destroy-trace\t\t\tDestroy the trace\n\
763f41e5 DS	68	--set-subbuf-size \"CHANNEL/bytes\"\tSet the size of subbuffers per channel\n\
763f41e5 DS	69	--set-subbuf-num \"CHANNEL/n\"\tSet the number of subbuffers per channel\n\
b2fb2f91	70	--set-sock-path\t\t\tSet the path of the daemon socket\n\
e77b8e8e DS	71	--get-subbuf-size \"CHANNEL\"\t\tGet the size of subbuffers per channel\n\
e77b8e8e DS	72	--get-subbuf-num \"CHANNEL\"\t\tGet the number of subbuffers per channel\n\
b2fb2f91	73	--get-sock-path\t\t\tGet the path of the daemon socket\n\
ae937656 PP	74	--enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\
	75	--disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\
	76	--list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t state and format string\n\
b9318b35	77	--force-switch\t\t\tForce a subbuffer switch\n\
ae937656	78	\
fd2fb4f9 PMF	79	");
	80	}
	81
52c51a47	82	int parse_opts_long(int argc, char *argv, struct ust_opts opts)
fbd8191b	83	{
52c51a47	84	int c;
52c51a47	85
52c51a47	86	opts->pids = NULL;
ef290fca	87	opts->regex = NULL;
52c51a47 PMF	88
52c51a47 PMF	89	while (1) {
52c51a47 PMF	90	int option_index = 0;
52c51a47 PMF	91	static struct option long_options[] = {
b0a5a08b PMF	92	{ "create-trace", 0, 0, CREATE_TRACE },
	93	{ "alloc-trace", 0, 0, ALLOC_TRACE },
	94	{ "start-trace", 0, 0, START_TRACE },
	95	{ "stop-trace", 0, 0, STOP_TRACE },
	96	{ "destroy-trace", 0, 0, DESTROY_TRACE },
	97	{ "list-markers", 0, 0, LIST_MARKERS },
	98	{ "enable-marker", 1, 0, ENABLE_MARKER },
	99	{ "disable-marker", 1, 0, DISABLE_MARKER },
	100	{ "help", 0, 0, 'h' },
	101	{ "online-pids", 0, 0, GET_ONLINE_PIDS },
	102	{ "set-subbuf-size", 1, 0, SET_SUBBUF_SIZE },
	103	{ "set-subbuf-num", 1, 0, SET_SUBBUF_NUM },
e77b8e8e DS	104	{ "get-subbuf-size", 1, 0, GET_SUBBUF_SIZE },
e77b8e8e DS	105	{ "get-subbuf-num", 1, 0, GET_SUBBUF_NUM },
b2fb2f91 AH	106	{ "get-sock-path", 0, 0, GET_SOCK_PATH },
b2fb2f91 AH	107	{ "set-sock-path", 1, 0, SET_SOCK_PATH },
b9318b35	108	{ "force-switch", 0, 0, FORCE_SWITCH },
b0a5a08b	109	{ 0, 0, 0, 0 }
52c51a47 PMF	110	};
52c51a47 PMF	111
d373b5cd	112	c = getopt_long(argc, argv, "h", long_options, &option_index);
52c51a47 PMF	113	if (c == -1)
	114	break;
	115
b0a5a08b PMF	116	if(c >= 1000)
	117	opts->cmd = c;
	118
52c51a47 PMF	119	switch (c) {
	120	case 0:
	121	printf("option %s", long_options[option_index].name);
	122	if (optarg)
	123	printf(" with arg %s", optarg);
	124	printf("\n");
	125	break;
	126
b0a5a08b PMF	127	case ENABLE_MARKER:
	128	case DISABLE_MARKER:
	129	case SET_SUBBUF_SIZE:
	130	case SET_SUBBUF_NUM:
e77b8e8e DS	131	case GET_SUBBUF_SIZE:
e77b8e8e DS	132	case GET_SUBBUF_NUM:
b2fb2f91	133	case SET_SOCK_PATH:
ef290fca	134	opts->regex = strdup(optarg);
ae937656	135	break;
b0a5a08b	136
d373b5cd PMF	137	case 'h':
	138	usage();
	139	exit(0);
b0a5a08b PMF	140
	141	case '?':
	142	fprintf(stderr, "Invalid argument\n\n");
	143	usage();
	144	exit(1);
fbd8191b PMF	145	}
	146	}
	147
772030fe	148	if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) {
52c51a47 PMF	149	int i;
	150	int pididx=0;
	151	opts->pids = malloc((argc-optind+1) * sizeof(pid_t));
fbd8191b	152
52c51a47	153	for(i=optind; i<argc; i++) {
08230db7 PMF	154	/* don't take any chances, use a long long */
	155	long long tmp;
	156	char *endptr;
	157	tmp = strtoull(argv[i], &endptr, 10);
	158	if(*endptr != '\0') {
	159	ERR("The pid \"%s\" is invalid.", argv[i]);
	160	return 1;
	161	}
	162	opts->pids[pididx++] = (pid_t) tmp;
52c51a47 PMF	163	}
52c51a47 PMF	164	opts->pids[pididx] = -1;
fbd8191b PMF	165	}
fbd8191b PMF	166
52c51a47 PMF	167	return 0;
52c51a47 PMF	168	}
fbd8191b	169
fbd8191b PMF	170	int main(int argc, char *argv[])
fbd8191b PMF	171	{
52c51a47	172	pid_t *pidit;
52c51a47	173	int result;
b2fb2f91	174	char *tmp;
52c51a47	175	struct ust_opts opts;
fbd8191b	176
52c51a47	177	progname = argv[0];
fbd8191b	178
52c51a47 PMF	179	if(argc <= 1) {
	180	fprintf(stderr, "No operation specified.\n");
	181	usage();
	182	exit(EXIT_FAILURE);
	183	}
	184
	185	result = parse_opts_long(argc, argv, &opts);
	186	if(result) {
08230db7	187	fprintf(stderr, "\n");
52c51a47 PMF	188	usage();
	189	exit(EXIT_FAILURE);
	190	}
	191
ae937656	192	if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) {
52c51a47 PMF	193	fprintf(stderr, "No pid specified.\n");
	194	usage();
	195	exit(EXIT_FAILURE);
	196	}
ae937656	197	if(opts.cmd == UNKNOWN) {
52c51a47 PMF	198	fprintf(stderr, "No command specified.\n");
	199	usage();
	200	exit(EXIT_FAILURE);
	201	}
ae937656	202	if (opts.cmd == GET_ONLINE_PIDS) {
08230db7	203	pid_t *pp = ustcmd_get_online_pids();
ae937656	204	unsigned int i = 0;
52c51a47	205
ae937656 PP	206	if (pp) {
	207	while (pp[i] != 0) {
	208	printf("%u\n", (unsigned int) pp[i]);
	209	++i;
	210	}
	211	free(pp);
52c51a47	212	}
ef290fca	213
ae937656 PP	214	exit(EXIT_SUCCESS);
ae937656 PP	215	}
52c51a47	216
ae937656	217	pidit = opts.pids;
08230db7	218	struct marker_status *cmsf = NULL;
ef290fca	219
ae937656 PP	220	while(*pidit != -1) {
ae937656 PP	221	switch (opts.cmd) {
62ec620f PMF	222	case CREATE_TRACE:
	223	result = ustcmd_create_trace(*pidit);
	224	if (result) {
	225	ERR("error while trying to create trace with PID %u\n", (unsigned int) *pidit);
	226	break;
	227	}
	228	break;
	229
ae937656	230	case START_TRACE:
08230db7 PMF	231	result = ustcmd_start_trace(*pidit);
	232	if (result) {
	233	ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit);
	234	break;
	235	}
ae937656	236	break;
ef290fca	237
ae937656	238	case STOP_TRACE:
08230db7 PMF	239	result = ustcmd_stop_trace(*pidit);
	240	if (result) {
	241	ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit);
	242	break;
	243	}
ae937656	244	break;
ef290fca	245
b0a5a08b	246	case DESTROY_TRACE:
08230db7 PMF	247	result = ustcmd_destroy_trace(*pidit);
	248	if (result) {
	249	ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit);
	250	break;
	251	}
ae937656	252	break;
ef290fca	253
ae937656	254	case LIST_MARKERS:
08230db7 PMF	255	cmsf = NULL;
	256	if (ustcmd_get_cmsf(&cmsf, *pidit)) {
	257	fprintf(stderr,
	258	"error while trying to list markers for"
	259	" PID %u\n", (unsigned int) *pidit);
	260	break;
	261	}
	262	unsigned int i = 0;
	263	while (cmsf[i].channel != NULL) {
	264	printf("{PID: %u, channel/marker: %s/%s, "
264f6231	265	"state: %u, fmt: %s}\n",
08230db7 PMF	266	(unsigned int) *pidit,
	267	cmsf[i].channel,
	268	cmsf[i].marker,
	269	cmsf[i].state,
	270	cmsf[i].fs);
	271	++i;
	272	}
	273	ustcmd_free_cmsf(cmsf);
ae937656	274	break;
ef290fca	275
ae937656	276	case ENABLE_MARKER:
ee648b8f PMF	277	if(opts.regex)
	278	ustcmd_set_marker_state(opts.regex, 1, *pidit);
	279	break;
ae937656	280	case DISABLE_MARKER:
ee648b8f PMF	281	if(opts.regex)
	282	ustcmd_set_marker_state(opts.regex, 0, *pidit);
	283	break;
ef290fca	284
763f41e5 DS	285	case SET_SUBBUF_SIZE:
	286	ustcmd_set_subbuf_size(opts.regex, *pidit);
	287	break;
	288
	289	case SET_SUBBUF_NUM:
	290	ustcmd_set_subbuf_num(opts.regex, *pidit);
	291	break;
	292
e77b8e8e DS	293	case GET_SUBBUF_SIZE:
	294	result = ustcmd_get_subbuf_size(opts.regex, *pidit);
	295	if (result == -1) {
	296	ERR("error while trying to get_subuf_size with PID %u\n", (unsigned int) *pidit);
	297	break;
	298	}
	299
	300	printf("the size of subbufers is %d\n", result);
	301	break;
	302
	303	case GET_SUBBUF_NUM:
	304	result = ustcmd_get_subbuf_num(opts.regex, *pidit);
	305	if (result == -1) {
	306	ERR("error while trying to get_subuf_num with PID %u\n", (unsigned int) *pidit);
	307	break;
	308	}
	309
	310	printf("the number of subbufers is %d\n", result);
	311	break;
	312
763f41e5 DS	313	case ALLOC_TRACE:
	314	result = ustcmd_alloc_trace(*pidit);
	315	if (result) {
	316	ERR("error while trying to alloc trace with PID %u\n", (unsigned int) *pidit);
	317	break;
	318	}
	319	break;
	320
b2fb2f91 AH	321	case GET_SOCK_PATH:
	322	result = ustcmd_get_sock_path(&tmp, *pidit);
	323	if (result) {
	324	ERR("error while trying to get sock path for PID %u\n", (unsigned int) *pidit);
	325	break;
	326	}
	327	printf("the socket path is %s\n", tmp);
	328	free(tmp);
	329	break;
	330
	331	case SET_SOCK_PATH:
	332	result = ustcmd_set_sock_path(opts.regex, *pidit);
	333	if (result) {
	334	ERR("error while trying to set sock path for PID %u\n", (unsigned int) *pidit);
	335	}
	336	break;
	337
b9318b35 AH	338	case FORCE_SWITCH:
	339	result = ustcmd_force_switch(*pidit);
	340	if (result) {
	341	ERR("error while trying to force switch for PID %u\n", (unsigned int) *pidit);
	342	}
	343	break;
	344
ae937656	345	default:
08230db7	346	ERR("unknown command\n");
ae937656 PP	347	break;
ae937656 PP	348	}
ef290fca	349
52c51a47 PMF	350	pidit++;
52c51a47 PMF	351	}
82b1a169	352
ef290fca PMF	353	if (opts.pids != NULL) {
	354	free(opts.pids);
	355	}
	356	if (opts.regex != NULL) {
	357	free(opts.regex);
ae937656	358	}
fbd8191b PMF	359
	360	return 0;
	361	}
ae937656	362