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00c76cea JG |
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 _GNU_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 >= 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; | |
b1a95f61 DG |
102 | size_t len, size; |
103 | struct lttng_uri *uris = NULL; | |
00c76cea JG |
104 | |
105 | if (!attr) { | |
106 | ret = -LTTNG_ERR_INVALID; | |
107 | goto error; | |
108 | } | |
109 | ||
b1a95f61 DG |
110 | if (!url) { |
111 | attr->configuration_url[0] = '\0'; | |
112 | ret = 0; | |
113 | goto end; | |
114 | } | |
00c76cea | 115 | |
b1a95f61 DG |
116 | len = strlen(url); |
117 | if (len >= PATH_MAX) { | |
118 | ret = -LTTNG_ERR_INVALID; | |
119 | goto error; | |
120 | } | |
00c76cea | 121 | |
b1a95f61 DG |
122 | size = uri_parse_str_urls(url, NULL, &uris); |
123 | if (size <= 0 || uris[0].dtype != LTTNG_DST_PATH) { | |
124 | ret = -LTTNG_ERR_INVALID; | |
125 | goto error; | |
00c76cea | 126 | } |
b1a95f61 DG |
127 | |
128 | /* Copy string plus the NULL terminated byte. */ | |
129 | lttng_ctl_copy_string(attr->configuration_url, uris[0].dst.path, | |
130 | sizeof(attr->configuration_url)); | |
131 | ||
132 | end: | |
00c76cea | 133 | error: |
b1a95f61 | 134 | free(uris); |
00c76cea JG |
135 | return ret; |
136 | } | |
137 | ||
138 | int lttng_save_session_attr_set_overwrite( | |
139 | struct lttng_save_session_attr *attr, int overwrite) | |
140 | { | |
141 | int ret = 0; | |
142 | ||
143 | if (!attr) { | |
144 | ret = -LTTNG_ERR_INVALID; | |
145 | goto end; | |
146 | } | |
147 | ||
148 | attr->overwrite = !!overwrite; | |
149 | end: | |
150 | return ret; | |
151 | } | |
152 | ||
153 | /* | |
154 | * The lttng-ctl API does not expose all the information needed to save the | |
155 | * session configurations. Thus, we must send a save command to the session | |
156 | * daemon which will, in turn, save its current session configuration. | |
157 | */ | |
158 | int lttng_save_session(struct lttng_save_session_attr *attr) | |
159 | { | |
160 | struct lttcomm_session_msg lsm; | |
161 | int ret; | |
162 | ||
163 | if (!attr) { | |
164 | ret = -LTTNG_ERR_INVALID; | |
165 | goto end; | |
166 | } | |
167 | ||
168 | memset(&lsm, 0, sizeof(lsm)); | |
169 | lsm.cmd_type = LTTNG_SAVE_SESSION; | |
170 | ||
171 | memcpy(&lsm.u.save_session.attr, attr, | |
172 | sizeof(struct lttng_save_session_attr)); | |
173 | ret = lttng_ctl_ask_sessiond(&lsm, NULL); | |
174 | end: | |
175 | return ret; | |
176 | } |