Port: Use LTTNG_NAME_MAX instead of NAME_MAX
[lttng-tools.git] / src / lib / lttng-ctl / load.c
CommitLineData
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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
18#define _GNU_SOURCE
6c1c0768 19#define _LGPL_SOURCE
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20#include <assert.h>
21#include <string.h>
22
23#include <lttng/lttng-error.h>
24#include <lttng/load.h>
25#include <lttng/load-internal.h>
26#include <common/sessiond-comm/sessiond-comm.h>
27#include <common/config/config.h>
28
29#include "lttng-ctl-helper.h"
30
31struct lttng_load_session_attr *lttng_load_session_attr_create(void)
32{
33 return zmalloc(sizeof(struct lttng_load_session_attr));
34}
35
36void lttng_load_session_attr_destroy(struct lttng_load_session_attr *attr)
37{
38 if (attr) {
39 free(attr);
40 }
41}
42
43const char *lttng_load_session_attr_get_session_name(
44 struct lttng_load_session_attr *attr)
45{
46 const char *ret = NULL;
47
48 if (attr && attr->session_name[0]) {
49 ret = attr->session_name;
50 }
51
52 return ret;
53}
54
55const char *lttng_load_session_attr_get_input_url(
56 struct lttng_load_session_attr *attr)
57{
58 const char *ret = NULL;
59
60 if (attr && attr->input_url[0]) {
61 ret = attr->input_url;
62 }
63
64 return ret;
65}
66
67int lttng_load_session_attr_get_overwrite(
68 struct lttng_load_session_attr *attr)
69{
70 return attr ? attr->overwrite : -LTTNG_ERR_INVALID;
71}
72
73int lttng_load_session_attr_set_session_name(
74 struct lttng_load_session_attr *attr, const char *session_name)
75{
76 int ret = 0;
77
78 if (!attr) {
79 ret = -LTTNG_ERR_INVALID;
80 goto error;
81 }
82
83 if (session_name) {
84 size_t len;
85
86 len = strlen(session_name);
36d2e35d 87 if (len >= LTTNG_NAME_MAX) {
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88 ret = -LTTNG_ERR_INVALID;
89 goto error;
90 }
91
92 strncpy(attr->session_name, session_name, len);
93 } else {
94 attr->session_name[0] = '\0';
95 }
96error:
97 return ret;
98}
99
100int lttng_load_session_attr_set_input_url(
101 struct lttng_load_session_attr *attr, const char *url)
102{
103 int ret = 0;
104 size_t len, size;
105 struct lttng_uri *uris = NULL;
106
107 if (!attr) {
108 ret = -LTTNG_ERR_INVALID;
109 goto error;
110 }
111
112 if (!url) {
113 attr->input_url[0] = '\0';
114 ret = 0;
115 goto end;
116 }
117
118 len = strlen(url);
119 if (len >= PATH_MAX) {
120 ret = -LTTNG_ERR_INVALID;
121 goto error;
122 }
123
124 size = uri_parse_str_urls(url, NULL, &uris);
125 if (size <= 0 || uris[0].dtype != LTTNG_DST_PATH) {
126 ret = -LTTNG_ERR_INVALID;
127 goto error;
128 }
129
130 /* Copy string plus the NULL terminated byte. */
131 lttng_ctl_copy_string(attr->input_url, uris[0].dst.path,
132 sizeof(attr->input_url));
133
134end:
135error:
136 free(uris);
137 return ret;
138}
139
140int lttng_load_session_attr_set_overwrite(
141 struct lttng_load_session_attr *attr, int overwrite)
142{
143 int ret = 0;
144
145 if (!attr) {
146 ret = -LTTNG_ERR_INVALID;
147 goto end;
148 }
149
150 attr->overwrite = !!overwrite;
151end:
152 return ret;
153}
154
155/*
156 * The lttng-ctl API does not expose all the information needed to load the
157 * session configurations. Thus, we must send a load command to the session
158 * daemon which will, in turn, load its current session configuration.
159 */
160int lttng_load_session(struct lttng_load_session_attr *attr)
161{
162 int ret;
163
164 if (!attr) {
165 ret = -LTTNG_ERR_INVALID;
166 goto end;
167 }
168
169 ret = config_load_session(attr->input_url, attr->session_name,
ab38c13f 170 attr->overwrite, 0);
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171
172end:
173 return ret;
174}
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