Commit | Line | Data |
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d3a684ee JR |
1 | /* |
2 | * Copyright (C) 2020 - EfficiOS, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This program 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 General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along | |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #include "buffer-view.h" | |
19 | #include "dynamic-buffer.h" | |
20 | #include "lttng/snapshot.h" | |
21 | #include "lttng/snapshot-internal.h" | |
22 | #include "snapshot.h" | |
23 | ||
24 | #include <assert.h> | |
25 | #include <stdlib.h> | |
26 | ||
27 | LTTNG_HIDDEN | |
28 | bool lttng_snapshot_output_validate(const struct lttng_snapshot_output *output) | |
29 | { | |
30 | bool valid = false; | |
31 | size_t len; | |
32 | ||
33 | /* | |
34 | * It is mandatory to have a ctrl_url. If there is only one output | |
35 | * URL (in the net://, net6:// or file:// form), it will be in this | |
36 | * field. | |
37 | */ | |
38 | len = lttng_strnlen(output->ctrl_url, sizeof(output->ctrl_url)); | |
39 | if (len == 0 || len >= sizeof(output->ctrl_url)) { | |
40 | goto end; | |
41 | } | |
42 | ||
43 | len = lttng_strnlen(output->data_url, sizeof(output->data_url)); | |
44 | if (len >= sizeof(output->data_url)) { | |
45 | goto end; | |
46 | } | |
47 | ||
48 | len = lttng_strnlen(output->name, sizeof(output->name)); | |
49 | if (len >= sizeof(output->name)) { | |
50 | goto end; | |
51 | } | |
52 | ||
53 | valid = true; | |
54 | ||
55 | end: | |
56 | return valid; | |
57 | } | |
58 | ||
59 | LTTNG_HIDDEN | |
60 | bool lttng_snapshot_output_is_equal( | |
61 | const struct lttng_snapshot_output *a, | |
62 | const struct lttng_snapshot_output *b) | |
63 | { | |
64 | bool equal = false; | |
65 | ||
66 | assert(a); | |
67 | assert(b); | |
68 | ||
69 | if (a->max_size != b->max_size) { | |
70 | goto end; | |
71 | } | |
72 | ||
73 | if (strcmp(a->name, b->name) != 0) { | |
74 | goto end; | |
75 | } | |
76 | ||
77 | if (strcmp(a->ctrl_url, b->ctrl_url) != 0) { | |
78 | goto end; | |
79 | } | |
80 | ||
81 | if (strcmp(a->data_url, b->data_url) != 0) { | |
82 | goto end; | |
83 | } | |
84 | ||
85 | equal = true; | |
86 | ||
87 | end: | |
88 | return equal; | |
89 | } | |
90 | ||
91 | /* | |
92 | * This is essentially the same as `struct lttng_snapshot_output`, but packed. | |
93 | */ | |
94 | struct LTTNG_PACKED lttng_snapshot_output_comm { | |
95 | uint32_t id; | |
96 | uint64_t max_size; | |
97 | char name[LTTNG_NAME_MAX]; | |
98 | char ctrl_url[PATH_MAX]; | |
99 | char data_url[PATH_MAX]; | |
100 | }; | |
101 | ||
102 | LTTNG_HIDDEN | |
103 | int lttng_snapshot_output_serialize( | |
104 | const struct lttng_snapshot_output *output, | |
105 | struct lttng_dynamic_buffer *buf) | |
106 | { | |
107 | struct lttng_snapshot_output_comm comm; | |
108 | int ret; | |
109 | ||
110 | comm.id = output->id; | |
111 | comm.max_size = output->max_size; | |
112 | ||
113 | ret = lttng_strncpy(comm.name, output->name, sizeof(comm.name)); | |
114 | if (ret) { | |
115 | goto end; | |
116 | } | |
117 | ||
118 | ret = lttng_strncpy(comm.ctrl_url, output->ctrl_url, sizeof(comm.ctrl_url)); | |
119 | if (ret) { | |
120 | goto end; | |
121 | } | |
122 | ||
123 | ret = lttng_strncpy(comm.data_url, output->data_url, sizeof(comm.data_url)); | |
124 | if (ret) { | |
125 | goto end; | |
126 | } | |
127 | ||
128 | ret = lttng_dynamic_buffer_append(buf, &comm, sizeof(comm)); | |
129 | if (ret) { | |
130 | goto end; | |
131 | } | |
132 | ||
133 | end: | |
134 | return ret; | |
135 | } | |
136 | ||
137 | LTTNG_HIDDEN | |
138 | ssize_t lttng_snapshot_output_create_from_buffer( | |
139 | const struct lttng_buffer_view *view, | |
140 | struct lttng_snapshot_output **output_p) | |
141 | { | |
142 | const struct lttng_snapshot_output_comm *comm; | |
143 | struct lttng_snapshot_output *output = NULL; | |
144 | int ret; | |
145 | ||
146 | if (view->size != sizeof(*comm)) { | |
147 | ret = -1; | |
148 | goto end; | |
149 | } | |
150 | ||
151 | output = lttng_snapshot_output_create(); | |
152 | if (!output) { | |
153 | ret = -1; | |
154 | goto end; | |
155 | } | |
156 | ||
157 | comm = (struct lttng_snapshot_output_comm *) view->data; | |
158 | ||
159 | output->id = comm->id; | |
160 | output->max_size = comm->max_size; | |
161 | ||
162 | ret = lttng_strncpy(output->name, comm->name, sizeof(output->name)); | |
163 | if (ret) { | |
164 | goto end; | |
165 | } | |
166 | ||
167 | ret = lttng_strncpy(output->ctrl_url, comm->ctrl_url, sizeof(output->ctrl_url)); | |
168 | if (ret) { | |
169 | goto end; | |
170 | } | |
171 | ||
172 | ret = lttng_strncpy(output->data_url, comm->data_url, sizeof(output->data_url)); | |
173 | if (ret) { | |
174 | goto end; | |
175 | } | |
176 | ||
177 | *output_p = output; | |
178 | output = NULL; | |
179 | ret = sizeof(*comm); | |
180 | ||
181 | end: | |
182 | lttng_snapshot_output_destroy(output); | |
183 | return ret; | |
184 | } |