*
* Returns 0 on success, < 0 on error
*/
-int lttng_kconsumer_take_snapshot(struct lttng_consumer_local_data *ctx,
- struct lttng_consumer_stream *stream)
+int lttng_kconsumer_take_snapshot(struct lttng_consumer_stream *stream)
{
int ret = 0;
int infd = stream->wait_fd;
*
* Returns 0 on success, < 0 on error
*/
-int lttng_kconsumer_get_produced_snapshot(
- struct lttng_consumer_local_data *ctx,
- struct lttng_consumer_stream *stream,
+int lttng_kconsumer_get_produced_snapshot(struct lttng_consumer_stream *stream,
unsigned long *pos)
{
int ret;
DBG("consumer_add_channel %d", msg.u.channel.channel_key);
new_channel = consumer_allocate_channel(msg.u.channel.channel_key,
- -1, -1,
- msg.u.channel.mmap_len,
- msg.u.channel.max_sb_size,
- msg.u.channel.nb_init_streams);
+ msg.u.channel.session_id, msg.u.channel.pathname,
+ msg.u.channel.name, msg.u.channel.uid, msg.u.channel.gid,
+ msg.u.channel.relayd_id, msg.u.channel.output);
if (new_channel == NULL) {
lttng_consumer_send_error(ctx, LTTCOMM_CONSUMERD_OUTFD_ERROR);
goto end_nosignal;
}
+ new_channel->nb_init_stream_left = msg.u.channel.nb_init_streams;
+
+ /* Translate and save channel type. */
+ switch (msg.u.channel.type) {
+ case CONSUMER_CHANNEL_TYPE_DATA:
+ case CONSUMER_CHANNEL_TYPE_METADATA:
+ new_channel->type = msg.u.channel.type;
+ break;
+ default:
+ assert(0);
+ goto end_nosignal;
+ };
+
if (ctx->on_recv_channel != NULL) {
ret = ctx->on_recv_channel(new_channel);
if (ret == 0) {
int fd, stream_pipe;
struct consumer_relayd_sock_pair *relayd = NULL;
struct lttng_consumer_stream *new_stream;
+ struct lttng_consumer_channel *channel;
int alloc_ret = 0;
+ /*
+ * Get stream's channel reference. Needed when adding the stream to the
+ * global hash table.
+ */
+ channel = consumer_find_channel(msg.u.stream.channel_key);
+ if (!channel) {
+ /*
+ * We could not find the channel. Can happen if cpu hotplug
+ * happens while tearing down.
+ */
+ ERR("Unable to find channel key %d", msg.u.stream.channel_key);
+ ret_code = LTTNG_ERR_KERN_CHAN_NOT_FOUND;
+ }
+
/* First send a status message before receiving the fds. */
ret = consumer_send_status_msg(sock, ret_code);
- if (ret < 0) {
- /* Somehow, the session daemon is not responding anymore. */
+ if (ret < 0 || ret_code != LTTNG_OK) {
+ /*
+ * Somehow, the session daemon is not responding anymore or the
+ * channel was not found.
+ */
goto end_nosignal;
}
goto end_nosignal;
}
- new_stream = consumer_allocate_stream(msg.u.stream.channel_key,
- msg.u.stream.stream_key,
- fd, fd,
- msg.u.stream.state,
- msg.u.stream.mmap_len,
- msg.u.stream.output,
- msg.u.stream.path_name,
- msg.u.stream.uid,
- msg.u.stream.gid,
- msg.u.stream.net_index,
- msg.u.stream.metadata_flag,
- msg.u.stream.session_id,
- &alloc_ret);
+ new_stream = consumer_allocate_stream(channel->key,
+ fd,
+ LTTNG_CONSUMER_ACTIVE_STREAM,
+ channel->name,
+ channel->uid,
+ channel->gid,
+ channel->relayd_id,
+ channel->session_id,
+ msg.u.stream.cpu,
+ &alloc_ret,
+ channel->type);
if (new_stream == NULL) {
switch (alloc_ret) {
case -ENOMEM:
default:
lttng_consumer_send_error(ctx, LTTCOMM_CONSUMERD_OUTFD_ERROR);
break;
- case -ENOENT:
- /*
- * We could not find the channel. Can happen if cpu hotplug
- * happens while tearing down.
- */
- DBG3("Could not find channel");
- break;
}
goto end_nosignal;
}
+ new_stream->chan = channel;
+ new_stream->wait_fd = fd;
/*
* The buffer flush is done on the session daemon side for the kernel
new_stream->hangup_flush_done = 0;
/* The stream is not metadata. Get relayd reference if exists. */
- relayd = consumer_find_relayd(msg.u.stream.net_index);
+ relayd = consumer_find_relayd(new_stream->net_seq_idx);
if (relayd != NULL) {
/* Add stream on the relayd */
pthread_mutex_lock(&relayd->ctrl_sock_mutex);
ret = relayd_add_stream(&relayd->control_sock,
- msg.u.stream.name, msg.u.stream.path_name,
+ new_stream->name, new_stream->chan->pathname,
&new_stream->relayd_stream_id);
pthread_mutex_unlock(&relayd->ctrl_sock_mutex);
if (ret < 0) {
consumer_del_stream(new_stream, NULL);
goto end_nosignal;
}
- } else if (msg.u.stream.net_index != -1) {
+ } else if (new_stream->net_seq_idx != -1) {
ERR("Network sequence index %d unknown. Not adding stream.",
- msg.u.stream.net_index);
+ new_stream->net_seq_idx);
consumer_del_stream(new_stream, NULL);
goto end_nosignal;
}
}
DBG("Kernel consumer ADD_STREAM %s (fd: %d) with relayd id %" PRIu64,
- msg.u.stream.path_name, fd, new_stream->relayd_stream_id);
+ new_stream->name, fd, new_stream->relayd_stream_id);
break;
}
case LTTNG_CONSUMER_UPDATE_STREAM:
goto end;
}
- switch (stream->output) {
+ switch (stream->chan->output) {
case LTTNG_EVENT_SPLICE:
/*
int lttng_kconsumer_on_recv_stream(struct lttng_consumer_stream *stream)
{
int ret;
+ char full_path[PATH_MAX];
+
+ assert(stream);
+
+ ret = snprintf(full_path, sizeof(full_path), "%s/%s",
+ stream->chan->pathname, stream->name);
+ if (ret < 0) {
+ PERROR("snprintf on_recv_stream");
+ goto error;
+ }
/* Opening the tracefile in write mode */
- if (strlen(stream->path_name) > 0 && stream->net_seq_idx == -1) {
- ret = run_as_open(stream->path_name,
- O_WRONLY|O_CREAT|O_TRUNC,
- S_IRWXU|S_IRWXG|S_IRWXO,
- stream->uid, stream->gid);
+ if (stream->net_seq_idx == -1) {
+ ret = run_as_open(full_path, O_WRONLY | O_CREAT | O_TRUNC,
+ S_IRWXU|S_IRWXG|S_IRWXO, stream->uid, stream->gid);
if (ret < 0) {
- ERR("Opening %s", stream->path_name);
- perror("open");
+ PERROR("open kernel stream path %s", full_path);
goto error;
}
stream->out_fd = ret;
ret = kernctl_get_mmap_len(stream->wait_fd, &mmap_len);
if (ret != 0) {
errno = -ret;
- perror("kernctl_get_mmap_len");
+ PERROR("kernctl_get_mmap_len");
goto error_close_fd;
}
stream->mmap_len = (size_t) mmap_len;
- stream->mmap_base = mmap(NULL, stream->mmap_len,
- PROT_READ, MAP_PRIVATE, stream->wait_fd, 0);
+ stream->mmap_base = mmap(NULL, stream->mmap_len, PROT_READ,
+ MAP_PRIVATE, stream->wait_fd, 0);
if (stream->mmap_base == MAP_FAILED) {
- perror("Error mmaping");
+ PERROR("Error mmaping");
ret = -1;
goto error_close_fd;
}
projects / lttng-tools.git / blobdiff