lsm.cmd_type = LTTNG_ADD_CONTEXT;
- /* Copy channel name */
- lttng_ctl_copy_string(lsm.u.context.channel_name, channel_name,
- sizeof(lsm.u.context.channel_name));
+ /* If no channel name, send empty string. */
+ if (channel_name == NULL) {
+ lttng_ctl_copy_string(lsm.u.context.channel_name, "",
+ sizeof(lsm.u.context.channel_name));
+ } else {
+ lttng_ctl_copy_string(lsm.u.context.channel_name, channel_name,
+ sizeof(lsm.u.context.channel_name));
+ }
lttng_ctl_copy_lttng_domain(&lsm.domain, &handle->domain);
memset(&lsm, 0, sizeof(lsm));
- /* If no channel name, we put the default name */
+ /* If no channel name, send empty string. */
if (channel_name == NULL) {
- lttng_ctl_copy_string(lsm.u.enable.channel_name, DEFAULT_CHANNEL_NAME,
+ lttng_ctl_copy_string(lsm.u.enable.channel_name, "",
sizeof(lsm.u.enable.channel_name));
} else {
lttng_ctl_copy_string(lsm.u.enable.channel_name, channel_name,
lsm.cmd_type = LTTNG_ENABLE_EVENT_WITH_FILTER;
- /* Copy channel name */
- lttng_ctl_copy_string(lsm.u.enable.channel_name, channel_name,
- sizeof(lsm.u.enable.channel_name));
+ /* If no channel name, send empty string. */
+ if (channel_name == NULL) {
+ lttng_ctl_copy_string(lsm.u.enable.channel_name, "",
+ sizeof(lsm.u.enable.channel_name));
+ } else {
+ lttng_ctl_copy_string(lsm.u.enable.channel_name, channel_name,
+ sizeof(lsm.u.enable.channel_name));
+ }
+
/* Copy event name */
if (event) {
memcpy(&lsm.u.enable.event, event, sizeof(lsm.u.enable.event));
memset(&lsm, 0, sizeof(lsm));
- if (channel_name) {
- lttng_ctl_copy_string(lsm.u.disable.channel_name, channel_name,
+ /* If no channel name, send empty string. */
+ if (channel_name == NULL) {
+ lttng_ctl_copy_string(lsm.u.disable.channel_name, "",
sizeof(lsm.u.disable.channel_name));
} else {
- lttng_ctl_copy_string(lsm.u.disable.channel_name, DEFAULT_CHANNEL_NAME,
+ lttng_ctl_copy_string(lsm.u.disable.channel_name, channel_name,
sizeof(lsm.u.disable.channel_name));
}
struct lttcomm_session_msg lsm;
struct lttng_uri *uris = NULL;
- if (name == NULL || datetime == NULL || url == NULL) {
+ if (name == NULL || datetime == NULL) {
return -LTTNG_ERR_INVALID;
}
return ret;
}
+/*
+ * Create a session exclusively used for snapshot.
+ *
+ * Returns LTTNG_OK on success or a negative error code.
+ */
+int lttng_create_session_snapshot(const char *name, const char *snapshot_url)
+{
+ int ret;
+ ssize_t size;
+ struct lttcomm_session_msg lsm;
+ struct lttng_uri *uris = NULL;
+
+ if (name == NULL) {
+ return -LTTNG_ERR_INVALID;
+ }
+
+ memset(&lsm, 0, sizeof(lsm));
+
+ lsm.cmd_type = LTTNG_CREATE_SESSION_SNAPSHOT;
+ lttng_ctl_copy_string(lsm.session.name, name, sizeof(lsm.session.name));
+
+ size = uri_parse_str_urls(snapshot_url, NULL, &uris);
+ if (size < 0) {
+ return -LTTNG_ERR_INVALID;
+ }
+
+ lsm.u.uri.size = size;
+
+ ret = lttng_ctl_ask_sessiond_varlen(&lsm, uris,
+ sizeof(struct lttng_uri) * size, NULL);
+
+ free(uris);
+ return ret;
+}
+
/*
* lib constructor
*/