Add load command to the lttng client
[lttng-tools.git] / src / bin / lttng / commands / enable_channels.c
CommitLineData
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
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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.
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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 *
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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.
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16 */
17
18#define _GNU_SOURCE
19#include <popt.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25#include <unistd.h>
5a0de755 26#include <inttypes.h>
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MD
27#include <assert.h>
28#include <ctype.h>
d36b8583 29
c399183f 30#include "../command.h"
1cb514ce 31#include "../utils.h"
d36b8583 32
42224349 33#include <src/common/sessiond-comm/sessiond-comm.h>
70d0b120 34#include <src/common/utils.h>
42224349 35
d36b8583 36static char *opt_channels;
5edd7e09 37static int opt_kernel;
5440dc42 38static char *opt_session_name;
d36b8583 39static int opt_userspace;
d78d6610 40static struct lttng_channel chan;
a79d84dd 41static char *opt_output;
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42static int opt_buffer_uid;
43static int opt_buffer_pid;
44static int opt_buffer_global;
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45
46enum {
47 OPT_HELP = 1,
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48 OPT_DISCARD,
49 OPT_OVERWRITE,
50 OPT_SUBBUF_SIZE,
51 OPT_NUM_SUBBUF,
52 OPT_SWITCH_TIMER,
53 OPT_READ_TIMER,
d36b8583 54 OPT_USERSPACE,
679b4943 55 OPT_LIST_OPTIONS,
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56 OPT_TRACEFILE_SIZE,
57 OPT_TRACEFILE_COUNT,
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58};
59
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60static struct lttng_handle *handle;
61
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62const char *output_mmap = "mmap";
63const char *output_splice = "splice";
64
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65static struct poptOption long_options[] = {
66 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
67 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42 68 {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
d36b8583 69 {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
d78d6610 70 {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
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71 {"discard", 0, POPT_ARG_NONE, 0, OPT_DISCARD, 0, 0},
72 {"overwrite", 0, POPT_ARG_NONE, 0, OPT_OVERWRITE, 0, 0},
70d0b120 73 {"subbuf-size", 0, POPT_ARG_STRING, 0, OPT_SUBBUF_SIZE, 0, 0},
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DG
74 {"num-subbuf", 0, POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0},
75 {"switch-timer", 0, POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0},
76 {"read-timer", 0, POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0},
679b4943 77 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
a79d84dd 78 {"output", 0, POPT_ARG_STRING, &opt_output, 0, 0, 0},
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79 {"buffers-uid", 0, POPT_ARG_VAL, &opt_buffer_uid, 1, 0, 0},
80 {"buffers-pid", 0, POPT_ARG_VAL, &opt_buffer_pid, 1, 0, 0},
81 {"buffers-global", 0, POPT_ARG_VAL, &opt_buffer_global, 1, 0, 0},
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82 {"tracefile-size", 'C', POPT_ARG_INT, 0, OPT_TRACEFILE_SIZE, 0, 0},
83 {"tracefile-count", 'W', POPT_ARG_INT, 0, OPT_TRACEFILE_COUNT, 0, 0},
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84 {0, 0, 0, 0, 0, 0, 0}
85};
86
87/*
88 * usage
89 */
90static void usage(FILE *ofp)
91{
05be3802 92 fprintf(ofp, "usage: lttng enable-channel NAME[,NAME2,...] (-u | -k) [OPTIONS]\n");
d36b8583 93 fprintf(ofp, "\n");
32a6298d 94 fprintf(ofp, "Options:\n");
7d29a247 95 fprintf(ofp, " -h, --help Show this help\n");
679b4943 96 fprintf(ofp, " --list-options Simple listing of options\n");
32a6298d 97 fprintf(ofp, " -s, --session NAME Apply to session name\n");
27221701 98 fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n");
27221701 99 fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
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100 fprintf(ofp, "\n");
101 fprintf(ofp, "Channel options:\n");
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MD
102 fprintf(ofp, " --discard Discard event when buffers are full%s\n",
103 DEFAULT_CHANNEL_OVERWRITE ? "" : " (default)");
104 fprintf(ofp, " --overwrite Flight recorder mode%s\n",
105 DEFAULT_CHANNEL_OVERWRITE ? " (default)" : "");
70d0b120 106 fprintf(ofp, " --subbuf-size SIZE Subbuffer size in bytes {+k,+M,+G}\n");
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107 fprintf(ofp, " (default UST uid: %zu, UST pid: %zu, kernel: %zu, metadata: %zu)\n",
108 default_get_ust_uid_channel_subbuf_size(),
109 default_get_ust_pid_channel_subbuf_size(),
110 default_get_kernel_channel_subbuf_size(),
111 default_get_metadata_subbuf_size());
1cb514ce 112 fprintf(ofp, " Rounded up to the next power of 2.\n");
cc62c0c0 113 fprintf(ofp, " --num-subbuf NUM Number of subbufers\n");
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114 fprintf(ofp, " (default UST uid: %u, UST pid: %u, kernel: %u, metadata: %u)\n",
115 DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM, DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM,
116 DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM, DEFAULT_METADATA_SUBBUF_NUM);
1cb514ce 117 fprintf(ofp, " Rounded up to the next power of 2.\n");
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118 fprintf(ofp, " --switch-timer USEC Switch timer interval in usec\n");
119 fprintf(ofp, " (default UST uid: %u, UST pid: %u, kernel: %u, metadata: %u)\n",
120 DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER, DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER,
121 DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER, DEFAULT_METADATA_SWITCH_TIMER);
122 fprintf(ofp, " --read-timer USEC Read timer interval in usec.\n");
123 fprintf(ofp, " (default UST uid: %u, UST pid: %u, kernel: %u, metadata: %u)\n",
124 DEFAULT_UST_UID_CHANNEL_READ_TIMER, DEFAULT_UST_UID_CHANNEL_READ_TIMER,
125 DEFAULT_KERNEL_CHANNEL_READ_TIMER, DEFAULT_METADATA_READ_TIMER);
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126 fprintf(ofp, " --output TYPE Channel output type (Values: %s, %s)\n",
127 output_mmap, output_splice);
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128 fprintf(ofp, " (default UST uid: %s, UST pid: %s, kernel: %s, metadata: %s)\n",
129 DEFAULT_UST_UID_CHANNEL_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice,
130 DEFAULT_UST_PID_CHANNEL_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice,
131 DEFAULT_KERNEL_CHANNEL_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice,
132 DEFAULT_METADATA_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice);
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133 fprintf(ofp, " --buffers-uid Use per UID buffer (-u/-j only)\n");
134 fprintf(ofp, " --buffers-pid Use per PID buffer (-u/-j only)\n");
7972aab2 135 fprintf(ofp, " --buffers-global Use shared buffer for the whole system (-k only)\n");
1624d5b7 136 fprintf(ofp, " -C, --tracefile-size SIZE\n");
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DG
137 fprintf(ofp, " Maximum size of each tracefile within a stream (in bytes). 0 means unlimited.\n");
138 fprintf(ofp, " (default: %u)\n", DEFAULT_CHANNEL_TRACEFILE_SIZE);
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139 fprintf(ofp, " -W, --tracefile-count COUNT\n");
140 fprintf(ofp, " Used in conjunction with -C option, this will limit the number\n");
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141 fprintf(ofp, " of files created to the specified count. 0 means unlimited.\n");
142 fprintf(ofp, " (default: %u)\n", DEFAULT_CHANNEL_TRACEFILE_COUNT);
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143 fprintf(ofp, "\n");
144}
145
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146/*
147 * Set default attributes depending on those already defined from the command
148 * line.
149 */
150static void set_default_attr(struct lttng_domain *dom)
151{
152 struct lttng_channel_attr default_attr;
153
154 /* Set attributes */
155 lttng_channel_set_default_attr(dom, &default_attr);
156
157 if (chan.attr.overwrite == -1) {
158 chan.attr.overwrite = default_attr.overwrite;
159 }
160 if (chan.attr.subbuf_size == -1) {
161 chan.attr.subbuf_size = default_attr.subbuf_size;
162 }
163 if (chan.attr.num_subbuf == -1) {
164 chan.attr.num_subbuf = default_attr.num_subbuf;
165 }
166 if (chan.attr.switch_timer_interval == -1) {
167 chan.attr.switch_timer_interval = default_attr.switch_timer_interval;
168 }
169 if (chan.attr.read_timer_interval == -1) {
170 chan.attr.read_timer_interval = default_attr.read_timer_interval;
171 }
172 if (chan.attr.output == -1) {
173 chan.attr.output = default_attr.output;
174 }
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175 if (chan.attr.tracefile_count == -1) {
176 chan.attr.tracefile_count = default_attr.tracefile_count;
177 }
178 if (chan.attr.tracefile_size == -1) {
179 chan.attr.tracefile_size = default_attr.tracefile_size;
180 }
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DG
181}
182
d36b8583 183/*
0fdd1e2c 184 * Adding channel using the lttng API.
d36b8583 185 */
cd80958d 186static int enable_channel(char *session_name)
d36b8583 187{
ae856491 188 int ret = CMD_SUCCESS, warn = 0;
d36b8583 189 char *channel_name;
7d29a247 190 struct lttng_domain dom;
d36b8583 191
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MD
192 memset(&dom, 0, sizeof(dom));
193
d78d6610 194 /* Create lttng domain */
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195 if (opt_kernel) {
196 dom.type = LTTNG_DOMAIN_KERNEL;
7972aab2 197 dom.buf_type = LTTNG_BUFFER_GLOBAL;
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198 if (opt_buffer_uid || opt_buffer_pid) {
199 ERR("Buffer type not supported for domain -k");
200 ret = CMD_ERROR;
201 goto error;
202 }
d78d6610 203 } else if (opt_userspace) {
f6a9efaa 204 dom.type = LTTNG_DOMAIN_UST;
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205 if (opt_buffer_pid) {
206 dom.buf_type = LTTNG_BUFFER_PER_PID;
7972aab2 207 } else {
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208 if (opt_buffer_global) {
209 ERR("Buffer type not supported for domain -u");
210 ret = CMD_ERROR;
211 goto error;
212 }
8692d4e5 213 dom.buf_type = LTTNG_BUFFER_PER_UID;
7972aab2 214 }
0fdd1e2c 215 } else {
b9dfb167 216 print_missing_domain();
d16c1a4c 217 ret = CMD_ERROR;
0fdd1e2c 218 goto error;
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DG
219 }
220
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221 set_default_attr(&dom);
222
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223 if (chan.attr.tracefile_size == 0 && chan.attr.tracefile_count) {
224 ERR("Missing option --tracefile-size. "
225 "A file count without a size won't do anything.");
226 ret = CMD_ERROR;
227 goto error;
228 }
229
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JD
230 if ((chan.attr.tracefile_size > 0) &&
231 (chan.attr.tracefile_size < chan.attr.subbuf_size)) {
de65565a 232 WARN("Tracefile size rounded up from (%" PRIu64 ") to subbuffer size (%" PRIu64 ")",
1624d5b7 233 chan.attr.tracefile_size, chan.attr.subbuf_size);
de65565a 234 chan.attr.tracefile_size = chan.attr.subbuf_size;
1624d5b7
JD
235 }
236
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237 /* Setting channel output */
238 if (opt_output) {
239 if (!strncmp(output_mmap, opt_output, strlen(output_mmap))) {
240 chan.attr.output = LTTNG_EVENT_MMAP;
241 } else if (!strncmp(output_splice, opt_output, strlen(output_splice))) {
242 chan.attr.output = LTTNG_EVENT_SPLICE;
243 } else {
244 ERR("Unknown output type %s. Possible values are: %s, %s\n",
245 opt_output, output_mmap, output_splice);
246 usage(stderr);
247 ret = CMD_ERROR;
248 goto error;
249 }
250 }
251
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DG
252 handle = lttng_create_handle(session_name, &dom);
253 if (handle == NULL) {
254 ret = -1;
255 goto error;
256 }
257
0fdd1e2c 258 /* Strip channel list (format: chan1,chan2,...) */
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259 channel_name = strtok(opt_channels, ",");
260 while (channel_name != NULL) {
0fdd1e2c
DG
261 /* Copy channel name and normalize it */
262 strncpy(chan.name, channel_name, NAME_MAX);
263 chan.name[NAME_MAX - 1] = '\0';
264
265 DBG("Enabling channel %s", channel_name);
266
267 ret = lttng_enable_channel(handle, &chan);
268 if (ret < 0) {
42224349 269 switch (-ret) {
f73fabfd
DG
270 case LTTNG_ERR_KERN_CHAN_EXIST:
271 case LTTNG_ERR_UST_CHAN_EXIST:
b9dfb167 272 case LTTNG_ERR_CHAN_EXIST:
88c5f0d8 273 WARN("Channel %s: %s (session %s)", channel_name,
42224349
DG
274 lttng_strerror(ret), session_name);
275 goto error;
276 default:
277 ERR("Channel %s: %s (session %s)", channel_name,
278 lttng_strerror(ret), session_name);
279 break;
280 }
ae856491 281 warn = 1;
d36b8583 282 } else {
7885e399 283 MSG("%s channel %s enabled for session %s",
b9dfb167 284 get_domain_str(dom.type), channel_name, session_name);
d36b8583
DG
285 }
286
287 /* Next event */
288 channel_name = strtok(NULL, ",");
289 }
290
ae856491
DG
291 ret = CMD_SUCCESS;
292
d36b8583 293error:
ae856491
DG
294 if (warn) {
295 ret = CMD_WARNING;
296 }
297
cd80958d
DG
298 lttng_destroy_handle(handle);
299
d36b8583
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300 return ret;
301}
302
303/*
0fdd1e2c 304 * Default value for channel configuration.
7d29a247
DG
305 */
306static void init_channel_config(void)
307{
5edd7e09
DG
308 /*
309 * Put -1 everywhere so we can identify those set by the command line and
310 * those needed to be set by the default values.
311 */
312 memset(&chan.attr, -1, sizeof(chan.attr));
7d29a247
DG
313}
314
315/*
0fdd1e2c 316 * Add channel to trace session
d36b8583
DG
317 */
318int cmd_enable_channels(int argc, const char **argv)
319{
ca1c3607 320 int opt, ret = CMD_SUCCESS;
d36b8583 321 static poptContext pc;
cd80958d 322 char *session_name = NULL;
70d0b120 323 char *opt_arg = NULL;
d36b8583 324
7d29a247
DG
325 init_channel_config();
326
d36b8583
DG
327 pc = poptGetContext(NULL, argc, argv, long_options, 0);
328 poptReadDefaultConfig(pc, 0);
329
330 while ((opt = poptGetNextOpt(pc)) != -1) {
331 switch (opt) {
332 case OPT_HELP:
ca1c3607 333 usage(stdout);
d36b8583 334 goto end;
7d29a247
DG
335 case OPT_DISCARD:
336 chan.attr.overwrite = 0;
337 DBG("Channel set to discard");
338 break;
339 case OPT_OVERWRITE:
340 chan.attr.overwrite = 1;
341 DBG("Channel set to overwrite");
342 break;
343 case OPT_SUBBUF_SIZE:
1cb514ce
MD
344 {
345 uint64_t rounded_size;
346 int order;
347
70d0b120
SM
348 /* Parse the size */
349 opt_arg = poptGetOptArg(pc);
1cb514ce
MD
350 if (utils_parse_size_suffix(opt_arg, &chan.attr.subbuf_size) < 0 || !chan.attr.subbuf_size) {
351 ERR("Wrong value in --subbuf-size parameter: %s", opt_arg);
70d0b120
SM
352 ret = CMD_ERROR;
353 goto end;
354 }
355
1cb514ce
MD
356 order = get_count_order_u64(chan.attr.subbuf_size);
357 assert(order >= 0);
358 rounded_size = 1ULL << order;
06c0da96
DG
359 if (rounded_size < chan.attr.subbuf_size) {
360 ERR("The subbuf size (%" PRIu64 ") is rounded and overflows!",
361 chan.attr.subbuf_size);
362 ret = CMD_ERROR;
363 goto end;
364 }
365
1cb514ce
MD
366 if (rounded_size != chan.attr.subbuf_size) {
367 WARN("The subbuf size (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")",
368 chan.attr.subbuf_size, rounded_size);
369 chan.attr.subbuf_size = rounded_size;
70d0b120
SM
370 }
371
1cb514ce
MD
372 /* Should now be power of 2 */
373 assert(!((chan.attr.subbuf_size - 1) & chan.attr.subbuf_size));
374
5a0de755 375 DBG("Channel subbuf size set to %" PRIu64, chan.attr.subbuf_size);
7d29a247 376 break;
1cb514ce 377 }
7d29a247 378 case OPT_NUM_SUBBUF:
1cb514ce
MD
379 {
380 uint64_t rounded_size;
381 int order;
382
16068db5 383 errno = 0;
1cb514ce
MD
384 opt_arg = poptGetOptArg(pc);
385 chan.attr.num_subbuf = strtoull(opt_arg, NULL, 0);
386 if (errno != 0 || !chan.attr.num_subbuf || !isdigit(opt_arg[0])) {
387 ERR("Wrong value in --num-subbuf parameter: %s", opt_arg);
16068db5
MD
388 ret = CMD_ERROR;
389 goto end;
390 }
391
1cb514ce
MD
392 order = get_count_order_u64(chan.attr.num_subbuf);
393 assert(order >= 0);
394 rounded_size = 1ULL << order;
e123b80c 395 if (rounded_size < chan.attr.num_subbuf) {
06c0da96
DG
396 ERR("The number of subbuffers (%" PRIu64 ") is rounded and overflows!",
397 chan.attr.num_subbuf);
398 ret = CMD_ERROR;
399 goto end;
400 }
401
1cb514ce
MD
402 if (rounded_size != chan.attr.num_subbuf) {
403 WARN("The number of subbuffers (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")",
404 chan.attr.num_subbuf, rounded_size);
405 chan.attr.num_subbuf = rounded_size;
406 }
407
408 /* Should now be power of 2 */
409 assert(!((chan.attr.num_subbuf - 1) & chan.attr.num_subbuf));
410
5a0de755 411 DBG("Channel subbuf num set to %" PRIu64, chan.attr.num_subbuf);
7d29a247 412 break;
1cb514ce 413 }
7d29a247 414 case OPT_SWITCH_TIMER:
16068db5
MD
415 {
416 unsigned long v;
417
418 errno = 0;
1cb514ce
MD
419 opt_arg = poptGetOptArg(pc);
420 v = strtoul(opt_arg, NULL, 0);
421 if (errno != 0 || !isdigit(opt_arg[0])) {
422 ERR("Wrong value in --switch-timer parameter: %s", opt_arg);
16068db5
MD
423 ret = CMD_ERROR;
424 goto end;
425 }
426 if (v != (uint32_t) v) {
427 ERR("32-bit overflow in --switch-timer parameter: %s", opt_arg);
428 ret = CMD_ERROR;
429 goto end;
430 }
431 chan.attr.switch_timer_interval = (uint32_t) v;
7d29a247
DG
432 DBG("Channel switch timer interval set to %d", chan.attr.switch_timer_interval);
433 break;
16068db5 434 }
7d29a247 435 case OPT_READ_TIMER:
16068db5
MD
436 {
437 unsigned long v;
438
439 errno = 0;
1cb514ce
MD
440 opt_arg = poptGetOptArg(pc);
441 v = strtoul(opt_arg, NULL, 0);
442 if (errno != 0 || !isdigit(opt_arg[0])) {
443 ERR("Wrong value in --read-timer parameter: %s", opt_arg);
16068db5
MD
444 ret = CMD_ERROR;
445 goto end;
446 }
447 if (v != (uint32_t) v) {
448 ERR("32-bit overflow in --read-timer parameter: %s", opt_arg);
449 ret = CMD_ERROR;
450 goto end;
451 }
452 chan.attr.read_timer_interval = (uint32_t) v;
7d29a247 453 DBG("Channel read timer interval set to %d", chan.attr.read_timer_interval);
d36b8583 454 break;
16068db5 455 }
eeac7d46
MD
456 case OPT_USERSPACE:
457 opt_userspace = 1;
eeac7d46 458 break;
1624d5b7 459 case OPT_TRACEFILE_SIZE:
1cb514ce 460 opt_arg = poptGetOptArg(pc);
16068db5 461 if (utils_parse_size_suffix(opt_arg, &chan.attr.tracefile_size) < 0) {
1cb514ce 462 ERR("Wrong value in --tracefile-size parameter: %s", opt_arg);
16068db5
MD
463 ret = CMD_ERROR;
464 goto end;
465 }
1624d5b7
JD
466 DBG("Maximum tracefile size set to %" PRIu64,
467 chan.attr.tracefile_size);
468 break;
469 case OPT_TRACEFILE_COUNT:
16068db5
MD
470 {
471 unsigned long v;
472
473 errno = 0;
1cb514ce
MD
474 opt_arg = poptGetOptArg(pc);
475 v = strtoul(opt_arg, NULL, 0);
476 if (errno != 0 || !isdigit(opt_arg[0])) {
477 ERR("Wrong value in --tracefile-count parameter: %s", opt_arg);
16068db5
MD
478 ret = CMD_ERROR;
479 goto end;
480 }
481 if (v != (uint32_t) v) {
482 ERR("32-bit overflow in --tracefile-count parameter: %s", opt_arg);
483 ret = CMD_ERROR;
484 goto end;
485 }
486 chan.attr.tracefile_count = (uint32_t) v;
1624d5b7
JD
487 DBG("Maximum tracefile count set to %" PRIu64,
488 chan.attr.tracefile_count);
489 break;
16068db5 490 }
679b4943
SM
491 case OPT_LIST_OPTIONS:
492 list_cmd_options(stdout, long_options);
679b4943 493 goto end;
d36b8583
DG
494 default:
495 usage(stderr);
496 ret = CMD_UNDEFINED;
497 goto end;
498 }
499 }
500
501 opt_channels = (char*) poptGetArg(pc);
502 if (opt_channels == NULL) {
7d29a247 503 ERR("Missing channel name.\n");
d36b8583 504 usage(stderr);
ca1c3607 505 ret = CMD_ERROR;
d36b8583
DG
506 goto end;
507 }
508
cd80958d
DG
509 if (!opt_session_name) {
510 session_name = get_session_name();
511 if (session_name == NULL) {
ca1c3607 512 ret = CMD_ERROR;
cd80958d
DG
513 goto end;
514 }
515 } else {
516 session_name = opt_session_name;
517 }
518
519 ret = enable_channel(session_name);
d36b8583
DG
520
521end:
5853fd43
DG
522 if (!opt_session_name && session_name) {
523 free(session_name);
524 }
ca1c3607 525 poptFreeContext(pc);
d36b8583
DG
526 return ret;
527}
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