Include cmd-2-2.h in cmd-2-1.h
[lttng-tools.git] / src / bin / lttng-relayd / cmd-2-2.c
1 /*
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>
5 *
6 * SPDX-License-Identifier: GPL-2.0-only
7 *
8 */
9
10 #define _LGPL_SOURCE
11 #include <assert.h>
12
13 #include <common/common.h>
14 #include <common/sessiond-comm/relayd.h>
15
16 #include <common/compat/endian.h>
17 #include <common/compat/string.h>
18 #include <lttng/constant.h>
19
20 #include "cmd-2-2.h"
21 #include "cmd-2-1.h"
22 #include "utils.h"
23
24 /*
25 * cmd_recv_stream_2_2 allocates path_name and channel_name.
26 */
27 int cmd_recv_stream_2_2(const struct lttng_buffer_view *payload,
28 char **ret_path_name, char **ret_channel_name,
29 uint64_t *tracefile_size, uint64_t *tracefile_count)
30 {
31 int ret;
32 struct lttcomm_relayd_add_stream_2_2 stream_info;
33 char *path_name = NULL;
34 char *channel_name = NULL;
35 size_t len;
36
37 if (payload->size < sizeof(stream_info)) {
38 ERR("Unexpected payload size in \"cmd_recv_stream_2_2\": expected >= %zu bytes, got %zu bytes",
39 sizeof(stream_info), payload->size);
40 ret = -1;
41 goto error;
42 }
43 memcpy(&stream_info, payload->data, sizeof(stream_info));
44
45 len = lttng_strnlen(stream_info.pathname, sizeof(stream_info.pathname));
46 /* Ensure that NULL-terminated and fits in local filename length. */
47 if (len == sizeof(stream_info.pathname) || len >= LTTNG_NAME_MAX) {
48 ret = -ENAMETOOLONG;
49 ERR("Path name too long");
50 goto error;
51 }
52 path_name = strdup(stream_info.pathname);
53 if (!path_name) {
54 PERROR("Path name allocation");
55 ret = -ENOMEM;
56 goto error;
57 }
58 len = lttng_strnlen(stream_info.channel_name, sizeof(stream_info.channel_name));
59 if (len == sizeof(stream_info.channel_name) || len >= DEFAULT_STREAM_NAME_LEN) {
60 ret = -ENAMETOOLONG;
61 ERR("Channel name too long");
62 goto error;
63 }
64 channel_name = strdup(stream_info.channel_name);
65 if (!channel_name) {
66 ret = -errno;
67 PERROR("Channel name allocation");
68 goto error;
69 }
70
71 *tracefile_size = be64toh(stream_info.tracefile_size);
72 *tracefile_count = be64toh(stream_info.tracefile_count);
73 *ret_path_name = path_name;
74 *ret_channel_name = channel_name;
75 return 0;
76 error:
77 free(path_name);
78 free(channel_name);
79 return ret;
80 }
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