Fix build system for valid make dist
[lttng-tools.git] / lttng / commands / destroy.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 destroy [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 * destroy_session
60 *
61 * Destroy a session removing the config directory and unregistering to the
62 * session daemon.
63 */
64 static int destroy_session()
65 {
66 int ret;
67 char *session_name, *path;
68
69 if (opt_session_name == NULL) {
70 session_name = get_session_name();
71 if (session_name == NULL) {
72 ret = CMD_ERROR;
73 goto error;
74 }
75 } else {
76 session_name = opt_session_name;
77 }
78
79 ret = lttng_destroy_session(session_name);
80 if (ret < 0) {
81 goto free_name;
82 }
83
84 path = config_get_default_path();
85 if (path == NULL) {
86 ret = CMD_FATAL;
87 goto free_name;
88 }
89
90 if (opt_session_name == NULL) {
91 config_destroy(path);
92 MSG("Session %s destroyed at %s", session_name, path);
93 } else {
94 MSG("Session %s destroyed", session_name);
95 }
96
97 ret = CMD_SUCCESS;
98
99 free_name:
100 if (opt_session_name == NULL) {
101 free(session_name);
102 }
103 error:
104 return ret;
105 }
106
107 /*
108 * cmd_destroy
109 *
110 * The 'destroy <options>' first level command
111 */
112 int cmd_destroy(int argc, const char **argv)
113 {
114 int opt, ret = CMD_SUCCESS;
115 static poptContext pc;
116
117 pc = poptGetContext(NULL, argc, argv, long_options, 0);
118 poptReadDefaultConfig(pc, 0);
119
120 while ((opt = poptGetNextOpt(pc)) != -1) {
121 switch (opt) {
122 case OPT_HELP:
123 usage(stderr);
124 goto end;
125 default:
126 usage(stderr);
127 ret = CMD_UNDEFINED;
128 goto end;
129 }
130 }
131
132 opt_session_name = (char*) poptGetArg(pc);
133
134 ret = destroy_session();
135
136 end:
137 return ret;
138 }
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