#include "ust-consumer.h"
/*
- * Send all stream fds of UST channel to the consumer.
+ * Send a single channel to the consumer using command ADD_CHANNEL.
*/
-static int send_channel_streams(int sock,
- struct ust_app_channel *uchan, const char *path,
- uid_t uid, gid_t gid, struct consumer_output *consumer)
+static int send_channel(int sock, struct ust_app_channel *uchan)
{
int ret, fd;
- char tmp_path[PATH_MAX];
- const char *pathname;
- struct lttcomm_consumer_msg lum;
- struct ltt_ust_stream *stream, *tmp;
+ struct lttcomm_consumer_msg msg;
- DBG("Sending streams of channel %s to UST consumer", uchan->name);
+ /* Safety net */
+ assert(uchan);
+
+ if (sock < 0) {
+ ret = -EINVAL;
+ goto error;
+ }
- consumer_init_channel_comm_msg(&lum,
+ DBG2("Sending channel %s to UST consumer", uchan->name);
+
+ consumer_init_channel_comm_msg(&msg,
LTTNG_CONSUMER_ADD_CHANNEL,
uchan->obj->shm_fd,
uchan->attr.subbuf_size,
uchan->obj->memory_map_size,
uchan->name);
- ret = consumer_send_channel(sock, &lum);
+ ret = consumer_send_channel(sock, &msg);
if (ret < 0) {
goto error;
}
goto error;
}
+error:
+ return ret;
+}
+
+/*
+ * Send a single stream to the consumer using ADD_STREAM command.
+ */
+static int send_channel_stream(int sock, struct ust_app_channel *uchan,
+ struct ust_app_session *usess, struct ltt_ust_stream *stream,
+ struct consumer_output *consumer, const char *pathname)
+{
+ int ret, fds[2];
+ struct lttcomm_consumer_msg msg;
+
+ /* Safety net */
+ assert(uchan);
+ assert(usess);
+ assert(stream);
+ assert(consumer);
+
+ DBG2("Sending stream %d of channel %s to kernel consumer",
+ stream->obj->shm_fd, uchan->name);
+
+ consumer_init_stream_comm_msg(&msg,
+ LTTNG_CONSUMER_ADD_STREAM,
+ uchan->obj->shm_fd,
+ stream->obj->shm_fd,
+ LTTNG_CONSUMER_ACTIVE_STREAM,
+ DEFAULT_UST_CHANNEL_OUTPUT,
+ stream->obj->memory_map_size,
+ usess->uid,
+ usess->gid,
+ consumer->net_seq_index,
+ 0, /* Metadata flag unset */
+ stream->name,
+ pathname);
+
+ /* Send stream and file descriptor */
+ fds[0] = stream->obj->shm_fd;
+ fds[1] = stream->obj->wait_fd;
+ ret = consumer_send_stream(sock, consumer, &msg, fds, 2);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
+/*
+ * Send all stream fds of UST channel to the consumer.
+ */
+int ust_consumer_send_channel_streams(int sock,
+ struct ust_app_channel *uchan, struct ust_app_session *usess,
+ struct consumer_output *consumer)
+{
+ int ret;
+ char tmp_path[PATH_MAX];
+ const char *pathname;
+ struct ltt_ust_stream *stream, *tmp;
+
+ DBG("Sending streams of channel %s to UST consumer", uchan->name);
+
+ ret = send_channel(sock, uchan);
+ if (ret < 0) {
+ goto error;
+ }
+
/* Get the right path name destination */
if (consumer->type == CONSUMER_DST_LOCAL) {
/* Set application path to the destination path */
ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- consumer->dst.trace_path, path);
+ consumer->dst.trace_path, usess->path);
if (ret < 0) {
PERROR("snprintf stream path");
goto error;
DBG3("UST local consumer tracefile path: %s", pathname);
} else {
ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- consumer->subdir, path);
+ consumer->subdir, usess->path);
if (ret < 0) {
PERROR("snprintf stream path");
goto error;
}
cds_list_for_each_entry_safe(stream, tmp, &uchan->streams.head, list) {
- int fds[2];
-
if (!stream->obj->shm_fd) {
continue;
}
- consumer_init_stream_comm_msg(&lum,
- LTTNG_CONSUMER_ADD_STREAM,
- uchan->obj->shm_fd,
- stream->obj->shm_fd,
- LTTNG_CONSUMER_ACTIVE_STREAM,
- DEFAULT_UST_CHANNEL_OUTPUT,
- stream->obj->memory_map_size,
- uid,
- gid,
- consumer->net_seq_index,
- 0, /* Metadata flag unset */
- stream->name,
+ ret = send_channel_stream(sock, uchan, usess, stream, consumer,
pathname);
-
- /* Send stream and file descriptor */
- fds[0] = stream->obj->shm_fd;
- fds[1] = stream->obj->wait_fd;
- ret = consumer_send_stream(sock, consumer, &lum, fds, 2);
if (ret < 0) {
goto error;
}
}
/*
- * Send all stream fds of the UST session to the consumer.
+ * Sending metadata to the consumer with command ADD_CHANNEL and ADD_STREAM.
*/
-int ust_consumer_send_session(int consumer_fd, struct ust_app_session *usess,
+int ust_consumer_send_metadata(int sock, struct ust_app_session *usess,
struct consumer_output *consumer)
{
- int ret = 0;
- int sock = consumer_fd;
+ int ret, fd, fds[2];
char tmp_path[PATH_MAX];
const char *pathname;
- struct lttng_ht_iter iter;
- struct lttcomm_consumer_msg lum;
- struct ust_app_channel *ua_chan;
+ struct lttcomm_consumer_msg msg;
- DBG("Sending metadata stream fd");
+ /* Safety net */
+ assert(usess);
+ assert(consumer);
- if (consumer_fd < 0) {
- ERR("Consumer has negative file descriptor");
+ if (sock < 0) {
+ ERR("Consumer socket is negative (%d)", sock);
return -EINVAL;
}
- if (usess->metadata->obj->shm_fd != 0) {
- int fd;
- int fds[2];
+ if (usess->metadata->obj->shm_fd == 0) {
+ ERR("Metadata obj shm_fd is 0");
+ ret = -1;
+ goto error;
+ }
- consumer_init_channel_comm_msg(&lum,
- LTTNG_CONSUMER_ADD_CHANNEL,
- usess->metadata->obj->shm_fd,
- usess->metadata->attr.subbuf_size,
- usess->metadata->obj->memory_map_size,
- "metadata");
+ DBG("UST consumer sending metadata stream fd");
- ret = consumer_send_channel(sock, &lum);
- if (ret < 0) {
- goto error;
- }
+ consumer_init_channel_comm_msg(&msg,
+ LTTNG_CONSUMER_ADD_CHANNEL,
+ usess->metadata->obj->shm_fd,
+ usess->metadata->attr.subbuf_size,
+ usess->metadata->obj->memory_map_size,
+ "metadata");
+
+ ret = consumer_send_channel(sock, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Sending metadata shared memory fd */
+ fd = usess->metadata->obj->shm_fd;
+ ret = consumer_send_fds(sock, &fd, 1);
+ if (ret < 0) {
+ goto error;
+ }
- fd = usess->metadata->obj->shm_fd;
- ret = consumer_send_fds(sock, &fd, 1);
+ /* Get correct path name destination */
+ if (consumer->type == CONSUMER_DST_LOCAL) {
+ /* Set application path to the destination path */
+ ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
+ consumer->dst.trace_path, usess->path);
if (ret < 0) {
+ PERROR("snprintf stream path");
goto error;
}
+ pathname = tmp_path;
- /* Get correct path name destination */
- if (consumer->type == CONSUMER_DST_LOCAL) {
- /* Set application path to the destination path */
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- consumer->dst.trace_path, usess->path);
- if (ret < 0) {
- PERROR("snprintf stream path");
- goto error;
- }
- pathname = tmp_path;
-
- /* Create directory */
- ret = run_as_mkdir_recursive(pathname, S_IRWXU | S_IRWXG,
- usess->uid, usess->gid);
- if (ret < 0) {
- if (ret != -EEXIST) {
- ERR("Trace directory creation error");
- goto error;
- }
- }
- } else {
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- consumer->subdir, usess->path);
- if (ret < 0) {
- PERROR("snprintf metadata path");
+ /* Create directory */
+ ret = run_as_mkdir_recursive(pathname, S_IRWXU | S_IRWXG,
+ usess->uid, usess->gid);
+ if (ret < 0) {
+ if (ret != -EEXIST) {
+ ERR("Trace directory creation error");
goto error;
}
- pathname = tmp_path;
}
-
- consumer_init_stream_comm_msg(&lum,
- LTTNG_CONSUMER_ADD_STREAM,
- usess->metadata->obj->shm_fd,
- usess->metadata->stream_obj->shm_fd,
- LTTNG_CONSUMER_ACTIVE_STREAM,
- DEFAULT_UST_CHANNEL_OUTPUT,
- usess->metadata->stream_obj->memory_map_size,
- usess->uid,
- usess->gid,
- consumer->net_seq_index,
- 1, /* Flag metadata set */
- "metadata",
- pathname);
-
- /* Send stream and file descriptor */
- fds[0] = usess->metadata->stream_obj->shm_fd;
- fds[1] = usess->metadata->stream_obj->wait_fd;
- ret = consumer_send_stream(sock, consumer, &lum, fds, 2);
+ } else {
+ ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
+ consumer->subdir, usess->path);
if (ret < 0) {
+ PERROR("snprintf metadata path");
goto error;
}
+ pathname = tmp_path;
+ }
+
+ consumer_init_stream_comm_msg(&msg,
+ LTTNG_CONSUMER_ADD_STREAM,
+ usess->metadata->obj->shm_fd,
+ usess->metadata->stream_obj->shm_fd,
+ LTTNG_CONSUMER_ACTIVE_STREAM,
+ DEFAULT_UST_CHANNEL_OUTPUT,
+ usess->metadata->stream_obj->memory_map_size,
+ usess->uid,
+ usess->gid,
+ consumer->net_seq_index,
+ 1, /* Flag metadata set */
+ "metadata",
+ pathname);
+
+ /* Send stream and file descriptor */
+ fds[0] = usess->metadata->stream_obj->shm_fd;
+ fds[1] = usess->metadata->stream_obj->wait_fd;
+ ret = consumer_send_stream(sock, consumer, &msg, fds, 2);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
+/*
+ * Send all stream fds of the UST session to the consumer.
+ */
+int ust_consumer_send_session(int consumer_fd, struct ust_app_session *usess,
+ struct consumer_output *consumer)
+{
+ int ret = 0;
+ int sock = consumer_fd;
+ struct lttng_ht_iter iter;
+ struct ust_app_channel *ua_chan;
+
+ DBG("Sending metadata stream fd");
+
+ if (consumer_fd < 0) {
+ ERR("Consumer has negative file descriptor");
+ return -EINVAL;
+ }
+
+ /* Sending metadata information to the consumer */
+ ret = ust_consumer_send_metadata(consumer_fd, usess, consumer);
+ if (ret < 0) {
+ goto error;
}
/* Send each channel fd streams of session */
continue;
}
- ret = send_channel_streams(sock, ua_chan, usess->path, usess->uid,
- usess->gid, consumer);
+ ret = ust_consumer_send_channel_streams(sock, ua_chan, usess, consumer);
if (ret < 0) {
rcu_read_unlock();
goto error;
error:
return ret;
}
-
-/*
- * Send relayd socket to consumer associated with a session name.
- *
- * On success return positive value. On error, negative value.
- */
-int ust_consumer_send_relayd_socket(int consumer_sock,
- struct lttcomm_sock *sock, struct consumer_output *consumer,
- enum lttng_stream_type type)
-{
- int ret;
- struct lttcomm_consumer_msg msg;
-
- /* Code flow error. Safety net. */
- assert(sock);
-
- msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET;
- msg.u.relayd_sock.net_index = consumer->net_seq_index;
- msg.u.relayd_sock.type = type;
- memcpy(&msg.u.relayd_sock.sock, sock, sizeof(msg.u.relayd_sock.sock));
-
- DBG2("Sending relayd sock info to consumer");
- ret = lttcomm_send_unix_sock(consumer_sock, &msg, sizeof(msg));
- if (ret < 0) {
- PERROR("send consumer relayd socket info");
- goto error;
- }
-
- DBG2("Sending relayd socket file descriptor to consumer");
- ret = consumer_send_fds(consumer_sock, &sock->fd, 1);
- if (ret < 0) {
- goto error;
- }
-
- DBG("UST consumer relayd socket sent");
-
-error:
- return ret;
-}
projects / lttng-tools.git / blobdiff