Clean-up: move global sessiond symbols out of main.o
[lttng-tools.git] / src / bin / lttng-relayd / utils.c
1 /*
2 * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
3 * David Goulet <dgoulet@efficios.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License, version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 51
16 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #define _LGPL_SOURCE
20 #include <assert.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24
25 #include <common/common.h>
26 #include <common/defaults.h>
27 #include <common/utils.h>
28
29 #include "lttng-relayd.h"
30 #include "utils.h"
31
32 static char *create_output_path_auto(const char *path_name)
33 {
34 int ret;
35 char *traces_path = NULL;
36 char *alloc_path = NULL;
37 char *default_path;
38
39 default_path = utils_get_home_dir();
40 if (default_path == NULL) {
41 ERR("Home path not found.\n \
42 Please specify an output path using -o, --output PATH");
43 goto exit;
44 }
45 alloc_path = strdup(default_path);
46 if (alloc_path == NULL) {
47 PERROR("Path allocation");
48 goto exit;
49 }
50 ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME
51 "/%s", alloc_path, path_name);
52 if (ret < 0) {
53 PERROR("asprintf trace dir name");
54 goto exit;
55 }
56 exit:
57 free(alloc_path);
58 return traces_path;
59 }
60
61 static char *create_output_path_noauto(const char *path_name)
62 {
63 int ret;
64 char *traces_path = NULL;
65 char *full_path;
66
67 full_path = utils_expand_path(opt_output_path);
68 if (!full_path) {
69 goto exit;
70 }
71
72 ret = asprintf(&traces_path, "%s/%s", full_path, path_name);
73 if (ret < 0) {
74 PERROR("asprintf trace dir name");
75 goto exit;
76 }
77 exit:
78 free(full_path);
79 return traces_path;
80 }
81
82 /*
83 * Create the output trace directory path name string.
84 *
85 * Return the allocated string containing the path name or else NULL.
86 */
87 char *create_output_path(const char *path_name)
88 {
89 assert(path_name);
90
91 if (opt_output_path == NULL) {
92 return create_output_path_auto(path_name);
93 } else {
94 return create_output_path_noauto(path_name);
95 }
96 }
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