relayd: clean-up: mix-up between LTTNG_PATH_MAX and LTTNG_NAME_MAX
[lttng-tools.git] / src / bin / lttng-relayd / cmd-2-4.c
1 /*
2 * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
3 * David Goulet <dgoulet@efficios.com>
4 * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License, version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc., 51
17 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #define _LGPL_SOURCE
21 #include <assert.h>
22
23 #include <common/common.h>
24 #include <common/sessiond-comm/relayd.h>
25
26 #include <common/compat/endian.h>
27 #include <common/compat/string.h>
28 #include <lttng/constant.h>
29
30 #include "cmd-2-4.h"
31 #include "lttng-relayd.h"
32
33 int cmd_create_session_2_4(const struct lttng_buffer_view *payload,
34 char *session_name, char *hostname,
35 uint32_t *live_timer, bool *snapshot)
36 {
37 int ret;
38 struct lttcomm_relayd_create_session_2_4 session_info;
39 size_t len;
40
41 if (payload->size < sizeof(session_info)) {
42 ERR("Unexpected payload size in \"cmd_create_session_2_4\": expected >= %zu bytes, got %zu bytes",
43 sizeof(session_info), payload->size);
44 ret = -1;
45 goto error;
46 }
47 memcpy(&session_info, payload->data, sizeof(session_info));
48
49 len = lttng_strnlen(session_info.session_name, sizeof(session_info.session_name));
50 /* Ensure that NULL-terminated and fits in local filename length. */
51 if (len == sizeof(session_info.session_name) || len >= LTTNG_NAME_MAX) {
52 ret = -ENAMETOOLONG;
53 ERR("Session name too long");
54 goto error;
55 }
56 strncpy(session_name, session_info.session_name, LTTNG_NAME_MAX);
57
58 len = lttng_strnlen(session_info.hostname, sizeof(session_info.hostname));
59 if (len == sizeof(session_info.hostname) || len >= LTTNG_HOST_NAME_MAX) {
60 ret = -ENAMETOOLONG;
61 ERR("Session name too long");
62 goto error;
63 }
64 strncpy(hostname, session_info.hostname, LTTNG_HOST_NAME_MAX);
65
66 *live_timer = be32toh(session_info.live_timer);
67 *snapshot = be32toh(session_info.snapshot);
68
69 ret = 0;
70
71 error:
72 return ret;
73 }
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