Fix: add missing semicolons after MSG, DBG, ERR print macros
[lttng-tools.git] / src / lib / lttng-ctl / save.c
1 /*
2 * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@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
18 #define _LGPL_SOURCE
19 #include <assert.h>
20 #include <string.h>
21
22 #include <lttng/lttng-error.h>
23 #include <lttng/save.h>
24 #include <lttng/save-internal.h>
25 #include <common/sessiond-comm/sessiond-comm.h>
26
27 #include "lttng-ctl-helper.h"
28
29 struct lttng_save_session_attr *lttng_save_session_attr_create(void)
30 {
31 return zmalloc(sizeof(struct lttng_save_session_attr));
32 }
33
34 void lttng_save_session_attr_destroy(struct lttng_save_session_attr *output)
35 {
36 if (output) {
37 free(output);
38 }
39 }
40
41 const char *lttng_save_session_attr_get_session_name(
42 struct lttng_save_session_attr *attr)
43 {
44 const char *ret = NULL;
45
46 if (attr && attr->session_name[0]) {
47 ret = attr->session_name;
48 }
49
50 return ret;
51 }
52
53 const char *lttng_save_session_attr_get_output_url(
54 struct lttng_save_session_attr *attr)
55 {
56 const char *ret = NULL;
57
58 if (attr && attr->configuration_url[0]) {
59 ret = attr->configuration_url;
60 }
61
62 return ret;
63 }
64
65 int lttng_save_session_attr_get_overwrite(
66 struct lttng_save_session_attr *attr)
67 {
68 return attr ? attr->overwrite : -LTTNG_ERR_INVALID;
69 }
70
71 int lttng_save_session_attr_set_session_name(
72 struct lttng_save_session_attr *attr, const char *session_name)
73 {
74 int ret = 0;
75
76 if (!attr) {
77 ret = -LTTNG_ERR_INVALID;
78 goto error;
79 }
80
81 if (session_name) {
82 size_t len;
83
84 len = strlen(session_name);
85 if (len >= LTTNG_NAME_MAX) {
86 ret = -LTTNG_ERR_INVALID;
87 goto error;
88 }
89
90 strncpy(attr->session_name, session_name, len);
91 } else {
92 attr->session_name[0] = '\0';
93 }
94 error:
95 return ret;
96 }
97
98 int lttng_save_session_attr_set_output_url(
99 struct lttng_save_session_attr *attr, const char *url)
100 {
101 int ret = 0;
102 size_t len;
103 ssize_t 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->configuration_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->configuration_url, uris[0].dst.path,
131 sizeof(attr->configuration_url));
132
133 end:
134 error:
135 free(uris);
136 return ret;
137 }
138
139 int lttng_save_session_attr_set_overwrite(
140 struct lttng_save_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 save the
156 * session configurations. Thus, we must send a save command to the session
157 * daemon which will, in turn, save its current session configuration.
158 */
159 int lttng_save_session(struct lttng_save_session_attr *attr)
160 {
161 struct lttcomm_session_msg lsm;
162 int ret;
163
164 if (!attr) {
165 ret = -LTTNG_ERR_INVALID;
166 goto end;
167 }
168
169 memset(&lsm, 0, sizeof(lsm));
170 lsm.cmd_type = LTTNG_SAVE_SESSION;
171
172 memcpy(&lsm.u.save_session.attr, attr,
173 sizeof(struct lttng_save_session_attr));
174 ret = lttng_ctl_ask_sessiond(&lsm, NULL);
175 end:
176 return ret;
177 }
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