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9245bd0e DG |
1 | /* |
2 | * Copyright (C) 2014 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
9245bd0e DG |
19 | #include <assert.h> |
20 | #include <string.h> | |
21 | ||
22 | #include <lttng/lttng-error.h> | |
23 | #include <lttng/load.h> | |
24 | #include <lttng/load-internal.h> | |
25 | #include <common/sessiond-comm/sessiond-comm.h> | |
f40ef1d5 | 26 | #include <common/config/session-config.h> |
9245bd0e DG |
27 | |
28 | #include "lttng-ctl-helper.h" | |
29 | ||
30 | struct lttng_load_session_attr *lttng_load_session_attr_create(void) | |
31 | { | |
32 | return zmalloc(sizeof(struct lttng_load_session_attr)); | |
33 | } | |
34 | ||
35 | void lttng_load_session_attr_destroy(struct lttng_load_session_attr *attr) | |
36 | { | |
37 | if (attr) { | |
38 | free(attr); | |
39 | } | |
40 | } | |
41 | ||
42 | const char *lttng_load_session_attr_get_session_name( | |
43 | struct lttng_load_session_attr *attr) | |
44 | { | |
45 | const char *ret = NULL; | |
46 | ||
47 | if (attr && attr->session_name[0]) { | |
48 | ret = attr->session_name; | |
49 | } | |
50 | ||
51 | return ret; | |
52 | } | |
53 | ||
54 | const char *lttng_load_session_attr_get_input_url( | |
55 | struct lttng_load_session_attr *attr) | |
56 | { | |
57 | const char *ret = NULL; | |
58 | ||
59 | if (attr && attr->input_url[0]) { | |
60 | ret = attr->input_url; | |
61 | } | |
62 | ||
63 | return ret; | |
64 | } | |
65 | ||
66 | int lttng_load_session_attr_get_overwrite( | |
67 | struct lttng_load_session_attr *attr) | |
68 | { | |
69 | return attr ? attr->overwrite : -LTTNG_ERR_INVALID; | |
70 | } | |
71 | ||
72 | int lttng_load_session_attr_set_session_name( | |
73 | struct lttng_load_session_attr *attr, const char *session_name) | |
74 | { | |
75 | int ret = 0; | |
76 | ||
77 | if (!attr) { | |
78 | ret = -LTTNG_ERR_INVALID; | |
79 | goto error; | |
80 | } | |
81 | ||
82 | if (session_name) { | |
83 | size_t len; | |
84 | ||
85 | len = strlen(session_name); | |
36d2e35d | 86 | if (len >= LTTNG_NAME_MAX) { |
9245bd0e DG |
87 | ret = -LTTNG_ERR_INVALID; |
88 | goto error; | |
89 | } | |
90 | ||
91 | strncpy(attr->session_name, session_name, len); | |
92 | } else { | |
93 | attr->session_name[0] = '\0'; | |
94 | } | |
95 | error: | |
96 | return ret; | |
97 | } | |
98 | ||
99 | int lttng_load_session_attr_set_input_url( | |
100 | struct lttng_load_session_attr *attr, const char *url) | |
101 | { | |
102 | int ret = 0; | |
103 | size_t len, size; | |
104 | struct lttng_uri *uris = NULL; | |
105 | ||
106 | if (!attr) { | |
107 | ret = -LTTNG_ERR_INVALID; | |
108 | goto error; | |
109 | } | |
110 | ||
111 | if (!url) { | |
112 | attr->input_url[0] = '\0'; | |
113 | ret = 0; | |
114 | goto end; | |
115 | } | |
116 | ||
117 | len = strlen(url); | |
118 | if (len >= PATH_MAX) { | |
119 | ret = -LTTNG_ERR_INVALID; | |
120 | goto error; | |
121 | } | |
122 | ||
123 | size = uri_parse_str_urls(url, NULL, &uris); | |
124 | if (size <= 0 || uris[0].dtype != LTTNG_DST_PATH) { | |
125 | ret = -LTTNG_ERR_INVALID; | |
126 | goto error; | |
127 | } | |
128 | ||
129 | /* Copy string plus the NULL terminated byte. */ | |
130 | lttng_ctl_copy_string(attr->input_url, uris[0].dst.path, | |
131 | sizeof(attr->input_url)); | |
132 | ||
133 | end: | |
134 | error: | |
135 | free(uris); | |
136 | return ret; | |
137 | } | |
138 | ||
139 | int lttng_load_session_attr_set_overwrite( | |
140 | struct lttng_load_session_attr *attr, int overwrite) | |
141 | { | |
142 | int ret = 0; | |
143 | ||
144 | if (!attr) { | |
145 | ret = -LTTNG_ERR_INVALID; | |
146 | goto end; | |
147 | } | |
148 | ||
149 | attr->overwrite = !!overwrite; | |
150 | end: | |
151 | return ret; | |
152 | } | |
153 | ||
154 | /* | |
155 | * The lttng-ctl API does not expose all the information needed to load the | |
156 | * session configurations. Thus, we must send a load command to the session | |
157 | * daemon which will, in turn, load its current session configuration. | |
158 | */ | |
159 | int lttng_load_session(struct lttng_load_session_attr *attr) | |
160 | { | |
161 | int ret; | |
162 | ||
163 | if (!attr) { | |
164 | ret = -LTTNG_ERR_INVALID; | |
165 | goto end; | |
166 | } | |
167 | ||
168 | ret = config_load_session(attr->input_url, attr->session_name, | |
ab38c13f | 169 | attr->overwrite, 0); |
9245bd0e DG |
170 | |
171 | end: | |
172 | return ret; | |
173 | } |