Fix build system for valid make dist
[lttng-tools.git] / lttng / commands / set_session.c
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; only version 2
7 * of the License.
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"
29 #include "../conf.h"
30 #include "../utils.h"
31
32 static char *opt_session_name;
33
34 enum {
35 OPT_HELP = 1,
36 };
37
38 static 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 */
47 static void usage(FILE *ofp)
48 {
49 fprintf(ofp, "usage: lttng set-session NAME\n");
50 fprintf(ofp, "\n");
51 fprintf(ofp, "Options:\n");
52 fprintf(ofp, " -h, --help Show this help\n");
53 fprintf(ofp, "\n");
54 }
55
56 /*
57 * set_session
58 */
59 static int set_session(void)
60 {
61 int ret = CMD_SUCCESS;
62 char *path;
63
64 path = config_get_default_path();
65 if (path == NULL) {
66 ret = -1;
67 goto error;
68 }
69
70 ret = config_add_session_name(path, opt_session_name);
71 if (ret < 0) {
72 ERR("Unable to add session name to config");
73 ret = CMD_ERROR;
74 goto error;
75 }
76
77 MSG("Session set to %s", opt_session_name);
78 ret = CMD_SUCCESS;
79
80 error:
81 return ret;
82 }
83
84 /*
85 * cmd_set_session
86 */
87 int cmd_set_session(int argc, const char **argv)
88 {
89 int opt, ret = CMD_SUCCESS;
90 static poptContext pc;
91
92 pc = poptGetContext(NULL, argc, argv, long_options, 0);
93 poptReadDefaultConfig(pc, 0);
94
95 while ((opt = poptGetNextOpt(pc)) != -1) {
96 switch (opt) {
97 case OPT_HELP:
98 usage(stderr);
99 ret = CMD_SUCCESS;
100 goto end;
101 default:
102 usage(stderr);
103 ret = CMD_UNDEFINED;
104 goto end;
105 }
106 }
107
108 opt_session_name = (char *) poptGetArg(pc);
109 if (opt_session_name == NULL) {
110 ERR("Missing session name");
111 usage(stderr);
112 goto end;
113 }
114
115 ret = set_session();
116
117 end:
118 return ret;
119 }
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