Commit | Line | Data |
---|---|---|
0f907de1 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com> |
3 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> | |
4 | * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
0f907de1 | 5 | * |
ab5be9fa | 6 | * SPDX-License-Identifier: GPL-2.0-only |
0f907de1 | 7 | * |
0f907de1 JD |
8 | */ |
9 | ||
6c1c0768 | 10 | #define _LGPL_SOURCE |
0f907de1 JD |
11 | |
12 | #include <common/common.h> | |
13 | #include <common/sessiond-comm/relayd.h> | |
246777db MD |
14 | #include <common/compat/string.h> |
15 | #include <lttng/constant.h> | |
0f907de1 | 16 | |
0f907de1 JD |
17 | #include "cmd-2-1.h" |
18 | #include "utils.h" | |
19 | ||
7591bab1 MD |
20 | /* |
21 | * cmd_recv_stream_2_1 allocates path_name and channel_name. | |
22 | */ | |
5312a3ed | 23 | int cmd_recv_stream_2_1(const struct lttng_buffer_view *payload, |
7591bab1 | 24 | char **ret_path_name, char **ret_channel_name) |
0f907de1 JD |
25 | { |
26 | int ret; | |
27 | struct lttcomm_relayd_add_stream stream_info; | |
7591bab1 MD |
28 | char *path_name = NULL; |
29 | char *channel_name = NULL; | |
246777db | 30 | size_t len; |
0f907de1 | 31 | |
5312a3ed JG |
32 | if (payload->size < sizeof(stream_info)) { |
33 | ERR("Unexpected payload size in \"cmd_recv_stream_2_1\": expected >= %zu bytes, got %zu bytes", | |
34 | sizeof(stream_info), payload->size); | |
35 | ret = -1; | |
0f907de1 JD |
36 | goto error; |
37 | } | |
5312a3ed | 38 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
0f907de1 | 39 | |
246777db MD |
40 | len = lttng_strnlen(stream_info.pathname, sizeof(stream_info.pathname)); |
41 | /* Ensure that NULL-terminated and fits in local filename length. */ | |
42 | if (len == sizeof(stream_info.pathname) || len >= LTTNG_NAME_MAX) { | |
43 | ret = -ENAMETOOLONG; | |
44 | ERR("Path name too long"); | |
45 | goto error; | |
46 | } | |
348a81dc | 47 | path_name = strdup(stream_info.pathname); |
7591bab1 | 48 | if (!path_name) { |
0f907de1 JD |
49 | PERROR("Path name allocation"); |
50 | ret = -ENOMEM; | |
51 | goto error; | |
52 | } | |
246777db MD |
53 | len = lttng_strnlen(stream_info.channel_name, sizeof(stream_info.channel_name)); |
54 | if (len == sizeof(stream_info.channel_name) || len >= DEFAULT_STREAM_NAME_LEN) { | |
55 | ret = -ENAMETOOLONG; | |
56 | ERR("Channel name too long"); | |
57 | goto error; | |
58 | } | |
7591bab1 MD |
59 | channel_name = strdup(stream_info.channel_name); |
60 | if (!channel_name) { | |
0f907de1 | 61 | ret = -errno; |
246777db | 62 | PERROR("Channel name allocation"); |
0f907de1 JD |
63 | goto error; |
64 | } | |
0f907de1 | 65 | |
7591bab1 MD |
66 | *ret_path_name = path_name; |
67 | *ret_channel_name = channel_name; | |
68 | return 0; | |
0f907de1 | 69 | error: |
7591bab1 MD |
70 | free(path_name); |
71 | free(channel_name); | |
0f907de1 JD |
72 | return ret; |
73 | } |