Fix wrong return value on consumer socket creation
[lttng-tools.git] / src / bin / lttng / commands / stop.c
CommitLineData
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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
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6 * as published by the Free Software Foundation; only version 2
7 * of the License.
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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
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>
27
c399183f 28#include "../command.h"
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29
30static char *opt_session_name;
31
32enum {
33 OPT_HELP = 1,
679b4943 34 OPT_LIST_OPTIONS,
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35};
36
37static struct poptOption long_options[] = {
38 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
39 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
679b4943 40 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
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41 {0, 0, 0, 0, 0, 0, 0}
42};
43
44/*
45 * usage
46 */
47static void usage(FILE *ofp)
48{
49 fprintf(ofp, "usage: lttng stop [options] [NAME]\n");
50 fprintf(ofp, "\n");
51 fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n");
52 fprintf(ofp, "get it from the configuration directory (.lttng).\n");
53 fprintf(ofp, "\n");
54 fprintf(ofp, " -h, --help Show this help\n");
679b4943 55 fprintf(ofp, " --list-options Simple listing of options\n");
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56 fprintf(ofp, "\n");
57}
58
59/*
cd80958d 60 * Start tracing for all trace of the session.
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61 */
62static int stop_tracing(void)
63{
ae856491 64 int ret;
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65 char *session_name;
66
67 if (opt_session_name == NULL) {
68 session_name = get_session_name();
69 if (session_name == NULL) {
70 ret = CMD_ERROR;
71 goto error;
72 }
73 } else {
74 session_name = opt_session_name;
75 }
76
6a4f824d 77 ret = lttng_stop_tracing(session_name);
f3ed775e 78 if (ret < 0) {
ae856491 79 /* Don't set ret so lttng can interpret the sessiond error. */
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80 goto free_name;
81 }
82
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83 ret = CMD_SUCCESS;
84
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85 MSG("Tracing stopped for session %s", session_name);
86
87free_name:
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88 if (opt_session_name == NULL) {
89 free(session_name);
90 }
cd80958d 91
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92error:
93 return ret;
94}
95
96/*
97 * cmd_stop
98 *
99 * The 'stop <options>' first level command
100 */
101int cmd_stop(int argc, const char **argv)
102{
ca1c3607 103 int opt, ret = CMD_SUCCESS;
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104 static poptContext pc;
105
106 pc = poptGetContext(NULL, argc, argv, long_options, 0);
107 poptReadDefaultConfig(pc, 0);
108
109 while ((opt = poptGetNextOpt(pc)) != -1) {
110 switch (opt) {
111 case OPT_HELP:
ca1c3607 112 usage(stdout);
f3ed775e 113 goto end;
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114 case OPT_LIST_OPTIONS:
115 list_cmd_options(stdout, long_options);
679b4943 116 goto end;
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117 default:
118 usage(stderr);
119 ret = CMD_UNDEFINED;
120 goto end;
121 }
122 }
123
124 opt_session_name = (char*) poptGetArg(pc);
125
126 ret = stop_tracing();
127
128end:
ca1c3607 129 poptFreeContext(pc);
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130 return ret;
131}
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