bin: compile lttng-relayd as a C++

[lttng-tools.git] / src / bin / lttng-relayd / cmd-2-1.cpp

diff --git a/src/bin/lttng-relayd/cmd-2-1.cpp b/src/bin/lttng-relayd/cmd-2-1.cpp
new file mode 100644 (file)
index 0000000..1f939dd
--- /dev/null
+++ b/src/bin/lttng-relayd/cmd-2-1.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#define _LGPL_SOURCE
+
+#include <common/common.h>
+#include <common/sessiond-comm/relayd.h>
+#include <common/compat/string.h>
+#include <lttng/constant.h>
+
+#include "cmd-2-1.h"
+#include "utils.h"
+
+/*
+ * cmd_recv_stream_2_1 allocates path_name and channel_name.
+ */
+int cmd_recv_stream_2_1(const struct lttng_buffer_view *payload,
+               char **ret_path_name, char **ret_channel_name)
+{
+       int ret;
+       struct lttcomm_relayd_add_stream stream_info;
+       char *path_name = NULL;
+       char *channel_name = NULL;
+       size_t len;
+
+       if (payload->size < sizeof(stream_info)) {
+               ERR("Unexpected payload size in \"cmd_recv_stream_2_1\": expected >= %zu bytes, got %zu bytes",
+                               sizeof(stream_info), payload->size);
+               ret = -1;
+               goto error;
+       }
+       memcpy(&stream_info, payload->data, sizeof(stream_info));
+
+       len = lttng_strnlen(stream_info.pathname, sizeof(stream_info.pathname));
+       /* Ensure that NULL-terminated and fits in local filename length. */
+       if (len == sizeof(stream_info.pathname) || len >= LTTNG_NAME_MAX) {
+               ret = -ENAMETOOLONG;
+               ERR("Path name too long");
+               goto error;
+       }
+       path_name = strdup(stream_info.pathname);
+       if (!path_name) {
+               PERROR("Path name allocation");
+               ret = -ENOMEM;
+               goto error;
+       }
+       len = lttng_strnlen(stream_info.channel_name, sizeof(stream_info.channel_name));
+       if (len == sizeof(stream_info.channel_name) || len >= DEFAULT_STREAM_NAME_LEN) {
+               ret = -ENAMETOOLONG;
+               ERR("Channel name too long");
+               goto error;
+       }
+       channel_name = strdup(stream_info.channel_name);
+       if (!channel_name) {
+               ret = -errno;
+               PERROR("Channel name allocation");
+               goto error;
+       }
+
+       *ret_path_name = path_name;
+       *ret_channel_name = channel_name;
+       return 0;
+error:
+       free(path_name);
+       free(channel_name);
+       return ret;
+}