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0f907de1 JD |
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 _GNU_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 | /* | |
33 | * Returns the HOME directory path. Caller MUST NOT free(3) the return pointer. | |
34 | */ | |
35 | static char *get_default_path(void) | |
36 | { | |
37 | return getenv("HOME"); | |
38 | } | |
39 | ||
40 | static char *create_output_path_auto(char *path_name) | |
41 | { | |
42 | int ret; | |
43 | char *traces_path = NULL; | |
44 | char *alloc_path = NULL; | |
45 | char *default_path; | |
46 | ||
47 | default_path = get_default_path(); | |
48 | if (default_path == NULL) { | |
49 | ERR("Home path not found.\n \ | |
50 | Please specify an output path using -o, --output PATH"); | |
51 | goto exit; | |
52 | } | |
53 | alloc_path = strdup(default_path); | |
54 | if (alloc_path == NULL) { | |
55 | PERROR("Path allocation"); | |
56 | goto exit; | |
57 | } | |
58 | ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME | |
59 | "/%s", alloc_path, path_name); | |
60 | if (ret < 0) { | |
61 | PERROR("asprintf trace dir name"); | |
62 | goto exit; | |
63 | } | |
64 | exit: | |
65 | free(alloc_path); | |
66 | return traces_path; | |
67 | } | |
68 | ||
69 | static char *create_output_path_noauto(char *path_name) | |
70 | { | |
71 | int ret; | |
72 | char *traces_path = NULL; | |
73 | char *full_path; | |
74 | ||
75 | full_path = utils_expand_path(opt_output_path); | |
76 | if (!full_path) { | |
77 | goto exit; | |
78 | } | |
79 | ||
80 | ret = asprintf(&traces_path, "%s/%s", full_path, path_name); | |
81 | if (ret < 0) { | |
82 | PERROR("asprintf trace dir name"); | |
83 | goto exit; | |
84 | } | |
85 | exit: | |
86 | free(full_path); | |
87 | return traces_path; | |
88 | } | |
89 | ||
90 | /* | |
91 | * Create the output trace directory path name string. | |
92 | * | |
93 | * Return the allocated string containing the path name or else NULL. | |
94 | */ | |
95 | char *create_output_path(char *path_name) | |
96 | { | |
97 | assert(path_name); | |
98 | ||
99 | if (opt_output_path == NULL) { | |
100 | return create_output_path_auto(path_name); | |
101 | } else { | |
102 | return create_output_path_noauto(path_name); | |
103 | } | |
104 | } |