Fix build system for valid make dist
[lttng-tools.git] / lttng / commands / create.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 <time.h>
27 #include <unistd.h>
28
29 #include "../cmd.h"
30 #include "../conf.h"
31 #include "../utils.h"
32
33 static char *opt_output_path;
34 static char *opt_session_name;
35
36 enum {
37 OPT_HELP = 1,
38 };
39
40 static struct poptOption long_options[] = {
41 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
42 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
43 {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, 0, 0},
44 {0, 0, 0, 0, 0, 0, 0}
45 };
46
47 /*
48 * usage
49 */
50 static void usage(FILE *ofp)
51 {
52 fprintf(ofp, "usage: lttng create [options] [NAME]\n");
53 fprintf(ofp, "\n");
54 fprintf(ofp, " -h, --help Show this help\n");
55 fprintf(ofp, " -o, --output PATH Specify output path for traces\n");
56 fprintf(ofp, "\n");
57 }
58
59 /*
60 * create_session
61 *
62 * Create a tracing session. If no name specified, a default name will be
63 * generated.
64 */
65 static int create_session()
66 {
67 int ret;
68 char name[NAME_MAX];
69 char *session_name, *traces_path = NULL, *alloc_path = NULL;
70 time_t rawtime;
71 struct tm *timeinfo;
72
73 /* Auto session name creation */
74 if (opt_session_name == NULL) {
75 time(&rawtime);
76 timeinfo = localtime(&rawtime);
77 strftime(name, sizeof(name), "auto-%Y%m%d-%H%M%S", timeinfo);
78 session_name = name;
79 DBG("Auto session name set to %s", session_name);
80 } else {
81 session_name = opt_session_name;
82 }
83
84 /* Auto output path */
85 if (opt_output_path == NULL) {
86 alloc_path = strdup(config_get_default_path());
87 if (alloc_path == NULL) {
88 ERR("Home path not found.\n \
89 Please specify an output path using -o, --output PATH");
90 ret = CMD_FATAL;
91 goto error;
92 }
93
94 ret = asprintf(&traces_path, "%s/" LTTNG_DEFAULT_TRACE_DIR_NAME, alloc_path);
95 if (ret < 0) {
96 perror("asprintf trace dir name");
97 goto error;
98 }
99 } else {
100 traces_path = opt_output_path;
101 }
102
103 ret = lttng_create_session(session_name, traces_path);
104 if (ret < 0) {
105 goto error;
106 }
107
108 /* Init lttng session config */
109 ret = config_init(session_name);
110 if (ret < 0) {
111 goto error;
112 }
113
114 MSG("Session %s created.", session_name);
115 MSG("Traces will be written in %s/%s-<date>-<time> ", traces_path, session_name);
116
117 ret = CMD_SUCCESS;
118
119 error:
120 if (alloc_path) {
121 free(alloc_path);
122 }
123
124 if (traces_path) {
125 free(traces_path);
126 }
127 return ret;
128 }
129
130 /*
131 * cmd_list
132 *
133 * The 'list <options>' first level command
134 */
135 int cmd_create(int argc, const char **argv)
136 {
137 int opt, ret = CMD_SUCCESS;
138 static poptContext pc;
139
140 pc = poptGetContext(NULL, argc, argv, long_options, 0);
141 poptReadDefaultConfig(pc, 0);
142
143 while ((opt = poptGetNextOpt(pc)) != -1) {
144 switch (opt) {
145 case OPT_HELP:
146 usage(stderr);
147 goto end;
148 default:
149 usage(stderr);
150 ret = CMD_UNDEFINED;
151 goto end;
152 }
153 }
154
155 opt_session_name = (char*) poptGetArg(pc);
156
157 ret = create_session();
158
159 end:
160 return ret;
161 }
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