Fix missing value
[lttng-tools.git] / lttng / commands / stop.c
CommitLineData
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
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
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
28#include "cmd.h"
beb8c75a 29#include "conf.h"
f3ed775e
DG
30#include "utils.h"
31
32static char *opt_session_name;
33
34enum {
35 OPT_HELP = 1,
36};
37
38static struct poptOption long_options[] = {
39 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
40 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
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");
55 fprintf(ofp, "\n");
56}
57
58/*
59 * stop_tracing
60 *
61 * Start tracing for all trace of the session.
62 */
63static int stop_tracing(void)
64{
65 int ret = CMD_SUCCESS;
66 char *session_name;
67
68 if (opt_session_name == NULL) {
69 session_name = get_session_name();
70 if (session_name == NULL) {
71 ret = CMD_ERROR;
72 goto error;
73 }
74 } else {
75 session_name = opt_session_name;
76 }
77
78 ret = lttng_stop_tracing(session_name);
79 if (ret < 0) {
80 goto free_name;
81 }
82
83 MSG("Tracing stopped for session %s", session_name);
84
85free_name:
86 free(session_name);
87error:
88 return ret;
89}
90
91/*
92 * cmd_stop
93 *
94 * The 'stop <options>' first level command
95 */
96int cmd_stop(int argc, const char **argv)
97{
98 int opt, ret;
99 static poptContext pc;
100
101 pc = poptGetContext(NULL, argc, argv, long_options, 0);
102 poptReadDefaultConfig(pc, 0);
103
104 while ((opt = poptGetNextOpt(pc)) != -1) {
105 switch (opt) {
106 case OPT_HELP:
107 usage(stderr);
108 ret = CMD_SUCCESS;
109 goto end;
110 default:
111 usage(stderr);
112 ret = CMD_UNDEFINED;
113 goto end;
114 }
115 }
116
117 opt_session_name = (char*) poptGetArg(pc);
118
119 ret = stop_tracing();
120
121end:
122 return ret;
123}
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