#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <inttypes.h>
#include <common/common.h>
#include <common/defaults.h>
#include <common/uri.h>
#include "consumer.h"
+#include "health.h"
+#include "ust-app.h"
+#include "utils.h"
/*
* Receive a reply command status message from the consumer. Consumer socket
assert(sock);
- ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply));
- if (ret < 0) {
- PERROR("recv consumer status msg");
+ ret = lttcomm_recv_unix_sock(*sock->fd, &reply, sizeof(reply));
+ if (ret <= 0) {
+ if (ret == 0) {
+ /* Orderly shutdown. Don't return 0 which means success. */
+ ret = -1;
+ }
+ /* The above call will print a PERROR on error. */
+ DBG("Fail to receive status reply on sock %d", *sock->fd);
goto end;
}
ret = 0;
} else {
ret = -reply.ret_code;
- ERR("Consumer ret code %d", reply.ret_code);
+ DBG("Consumer ret code %d", ret);
}
end:
return ret;
}
+/*
+ * Once the ASK_CHANNEL command is sent to the consumer, the channel
+ * information are sent back. This call receives that data and populates key
+ * and stream_count.
+ *
+ * On success return 0 and both key and stream_count are set. On error, a
+ * negative value is sent back and both parameters are untouched.
+ */
+int consumer_recv_status_channel(struct consumer_socket *sock,
+ uint64_t *key, unsigned int *stream_count)
+{
+ int ret;
+ struct lttcomm_consumer_status_channel reply;
+
+ assert(sock);
+ assert(stream_count);
+ assert(key);
+
+ ret = lttcomm_recv_unix_sock(*sock->fd, &reply, sizeof(reply));
+ if (ret <= 0) {
+ if (ret == 0) {
+ /* Orderly shutdown. Don't return 0 which means success. */
+ ret = -1;
+ }
+ /* The above call will print a PERROR on error. */
+ DBG("Fail to receive status reply on sock %d", *sock->fd);
+ goto end;
+ }
+
+ /* An error is possible so don't touch the key and stream_count. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ goto end;
+ }
+
+ *key = reply.key;
+ *stream_count = reply.stream_count;
+
+end:
+ return ret;
+}
+
/*
* Send destroy relayd command to consumer.
*
assert(consumer);
assert(sock);
- DBG2("Sending destroy relayd command to consumer...");
+ DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd);
/* Bail out if consumer is disabled */
if (!consumer->enabled) {
msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index;
pthread_mutex_lock(sock->lock);
- ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg));
+ ret = lttcomm_send_unix_sock(*sock->fd, &msg, sizeof(msg));
if (ret < 0) {
- PERROR("send consumer destroy relayd command");
+ /* Indicate that the consumer is probably closing at this point. */
+ DBG("send consumer destroy relayd command");
goto error_send;
}
*/
void consumer_output_send_destroy_relayd(struct consumer_output *consumer)
{
- int ret;
struct lttng_ht_iter iter;
struct consumer_socket *socket;
assert(consumer);
/* Destroy any relayd connection */
- if (consumer && consumer->type == CONSUMER_DST_NET) {
+ if (consumer->type == CONSUMER_DST_NET) {
rcu_read_lock();
cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
node.node) {
+ int ret;
+
/* Send destroy relayd command */
ret = consumer_send_destroy_relayd(socket, consumer);
if (ret < 0) {
- ERR("Unable to send destroy relayd command to consumer");
+ DBG("Unable to send destroy relayd command to consumer");
/* Continue since we MUST delete everything at this point. */
}
}
socket = consumer_find_socket(data->cmd_sock, output);
rcu_read_unlock();
if (socket == NULL) {
- socket = consumer_allocate_socket(data->cmd_sock);
+ socket = consumer_allocate_socket(&data->cmd_sock);
if (socket == NULL) {
ret = -1;
goto error;
rcu_read_unlock();
}
+ socket->type = data->type;
+
DBG3("Consumer socket created (fd: %d) and added to output",
data->cmd_sock);
return ret;
}
+/*
+ * Return the consumer socket from the given consumer output with the right
+ * bitness. On error, returns NULL.
+ *
+ * The caller MUST acquire a rcu read side lock and keep it until the socket
+ * object reference is not needed anymore.
+ */
+struct consumer_socket *consumer_find_socket_by_bitness(int bits,
+ struct consumer_output *consumer)
+{
+ int consumer_fd;
+ struct consumer_socket *socket = NULL;
+
+ switch (bits) {
+ case 64:
+ consumer_fd = uatomic_read(&ust_consumerd64_fd);
+ break;
+ case 32:
+ consumer_fd = uatomic_read(&ust_consumerd32_fd);
+ break;
+ default:
+ assert(0);
+ goto end;
+ }
+
+ socket = consumer_find_socket(consumer_fd, consumer);
+ if (!socket) {
+ ERR("Consumer socket fd %d not found in consumer obj %p",
+ consumer_fd, consumer);
+ }
+
+end:
+ return socket;
+}
+
/*
* Find a consumer_socket in a consumer_output hashtable. Read side lock must
* be acquired before calling this function and across use of the
/*
* Allocate a new consumer_socket and return the pointer.
*/
-struct consumer_socket *consumer_allocate_socket(int fd)
+struct consumer_socket *consumer_allocate_socket(int *fd)
{
struct consumer_socket *socket = NULL;
+ assert(fd);
+
socket = zmalloc(sizeof(struct consumer_socket));
if (socket == NULL) {
PERROR("zmalloc consumer socket");
}
socket->fd = fd;
- lttng_ht_node_init_ulong(&socket->node, fd);
+ lttng_ht_node_init_ulong(&socket->node, *fd);
error:
return socket;
* consumer was registered,
*/
if (sock->registered) {
- DBG3("Consumer socket was registered. Closing fd %d", sock->fd);
- lttcomm_close_unix_sock(sock->fd);
+ DBG3("Consumer socket was registered. Closing fd %d", *sock->fd);
+ lttcomm_close_unix_sock(*sock->fd);
}
call_rcu(&sock->node.head, destroy_socket_rcu);
/* By default, consumer output is enabled */
output->enabled = 1;
output->type = type;
- output->net_seq_index = -1;
+ output->net_seq_index = (uint64_t) -1ULL;
output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
return output;
}
+/*
+ * Iterate over the consumer output socket hash table and destroy them. The
+ * socket file descriptor are only closed if the consumer output was
+ * registered meaning it's an external consumer.
+ */
+void consumer_destroy_output_sockets(struct consumer_output *obj)
+{
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket;
+
+ if (!obj->socks) {
+ return;
+ }
+
+ rcu_read_lock();
+ cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+ consumer_del_socket(socket, obj);
+ consumer_destroy_socket(socket);
+ }
+ rcu_read_unlock();
+}
+
/*
* Delete the consumer_output object from the list and free the ptr.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
*/
void consumer_destroy_output(struct consumer_output *obj)
{
return;
}
- if (obj->socks) {
- struct lttng_ht_iter iter;
- struct consumer_socket *socket;
-
- rcu_read_lock();
- cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
- consumer_del_socket(socket, obj);
- consumer_destroy_socket(socket);
- }
- rcu_read_unlock();
+ consumer_destroy_output_sockets(obj);
+ if (obj->socks) {
/* Finally destroy HT */
- lttng_ht_destroy(obj->socks);
+ ht_cleanup_push(obj->socks);
}
free(obj);
/*
* Copy consumer output and returned the newly allocated copy.
+ *
+ * Should *NOT* be called with RCU read-side lock held.
*/
struct consumer_output *consumer_copy_output(struct consumer_output *obj)
{
+ int ret;
struct lttng_ht *tmp_ht_ptr;
- struct lttng_ht_iter iter;
- struct consumer_socket *socket, *copy_sock;
struct consumer_output *output;
assert(obj);
/* Putting back the HT pointer and start copying socket(s). */
output->socks = tmp_ht_ptr;
- cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+ ret = consumer_copy_sockets(output, obj);
+ if (ret < 0) {
+ goto malloc_error;
+ }
+
+error:
+ return output;
+
+malloc_error:
+ consumer_destroy_output(output);
+ return NULL;
+}
+
+/*
+ * Copy consumer sockets from src to dst.
+ *
+ * Return 0 on success or else a negative value.
+ */
+int consumer_copy_sockets(struct consumer_output *dst,
+ struct consumer_output *src)
+{
+ int ret = 0;
+ struct lttng_ht_iter iter;
+ struct consumer_socket *socket, *copy_sock;
+
+ assert(dst);
+ assert(src);
+
+ rcu_read_lock();
+ cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) {
+ /* Ignore socket that are already there. */
+ copy_sock = consumer_find_socket(*socket->fd, dst);
+ if (copy_sock) {
+ continue;
+ }
+
/* Create new socket object. */
copy_sock = consumer_allocate_socket(socket->fd);
if (copy_sock == NULL) {
- goto malloc_error;
+ rcu_read_unlock();
+ ret = -ENOMEM;
+ goto error;
}
copy_sock->registered = socket->registered;
+ /*
+ * This is valid because this lock is shared accross all consumer
+ * object being the global lock of the consumer data structure of the
+ * session daemon.
+ */
copy_sock->lock = socket->lock;
- consumer_add_socket(copy_sock, output);
+ consumer_add_socket(copy_sock, dst);
}
+ rcu_read_unlock();
error:
- return output;
-
-malloc_error:
- consumer_destroy_output(output);
- return NULL;
+ return ret;
}
/*
if (uri->port == 0) {
/* Assign default port. */
uri->port = DEFAULT_NETWORK_CONTROL_PORT;
+ } else {
+ if (obj->dst.net.data_isset && uri->port ==
+ obj->dst.net.data.port) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
}
DBG3("Consumer control URI set with port %d", uri->port);
break;
if (uri->port == 0) {
/* Assign default port. */
uri->port = DEFAULT_NETWORK_DATA_PORT;
+ } else {
+ if (obj->dst.net.control_isset && uri->port ==
+ obj->dst.net.control.port) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
}
DBG3("Consumer data URI set with port %d", uri->port);
break;
default:
ERR("Set network uri type unknown %d", uri->stype);
+ ret = -LTTNG_ERR_INVALID;
goto error;
}
}
if (ret < 0) {
PERROR("snprintf set consumer uri subdir");
+ ret = -LTTNG_ERR_NOMEM;
goto error;
}
equal:
return 1;
error:
- return -1;
+ return ret;
}
/*
assert(fds);
assert(sock);
+ assert(sock->fd);
assert(nb_fd > 0);
- ret = lttcomm_send_fds_unix_sock(sock->fd, fds, nb_fd);
+ ret = lttcomm_send_fds_unix_sock(*sock->fd, fds, nb_fd);
+ if (ret < 0) {
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending consumer fds on sock %d", *sock->fd);
+ goto error;
+ }
+
+ ret = consumer_recv_status_reply(sock);
+
+error:
+ return ret;
+}
+
+/*
+ * Consumer send communication message structure to consumer.
+ */
+int consumer_send_msg(struct consumer_socket *sock,
+ struct lttcomm_consumer_msg *msg)
+{
+ int ret;
+
+ assert(msg);
+ assert(sock);
+ assert(sock->fd);
+
+ ret = lttcomm_send_unix_sock(*sock->fd, msg,
+ sizeof(struct lttcomm_consumer_msg));
if (ret < 0) {
- PERROR("send consumer fds");
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending consumer channel on sock %d", *sock->fd);
goto error;
}
assert(msg);
assert(sock);
- assert(sock->fd >= 0);
+ assert(sock->fd);
- ret = lttcomm_send_unix_sock(sock->fd, msg,
+ ret = lttcomm_send_unix_sock(*sock->fd, msg,
sizeof(struct lttcomm_consumer_msg));
if (ret < 0) {
- PERROR("send consumer channel");
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending consumer channel on sock %d", *sock->fd);
goto error;
}
return ret;
}
+/*
+ * Populate the given consumer msg structure with the ask_channel command
+ * information.
+ */
+void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
+ uint64_t subbuf_size,
+ uint64_t num_subbuf,
+ int overwrite,
+ unsigned int switch_timer_interval,
+ unsigned int read_timer_interval,
+ int output,
+ int type,
+ uint64_t session_id,
+ const char *pathname,
+ const char *name,
+ uid_t uid,
+ gid_t gid,
+ uint64_t relayd_id,
+ uint64_t key,
+ unsigned char *uuid,
+ uint32_t chan_id,
+ uint64_t tracefile_size,
+ uint64_t tracefile_count,
+ uint64_t session_id_per_pid,
+ unsigned int monitor,
+ uint32_t ust_app_uid)
+{
+ assert(msg);
+
+ /* Zeroed structure */
+ memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
+
+ msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION;
+ msg->u.ask_channel.subbuf_size = subbuf_size;
+ msg->u.ask_channel.num_subbuf = num_subbuf ;
+ msg->u.ask_channel.overwrite = overwrite;
+ msg->u.ask_channel.switch_timer_interval = switch_timer_interval;
+ msg->u.ask_channel.read_timer_interval = read_timer_interval;
+ msg->u.ask_channel.output = output;
+ msg->u.ask_channel.type = type;
+ msg->u.ask_channel.session_id = session_id;
+ msg->u.ask_channel.session_id_per_pid = session_id_per_pid;
+ msg->u.ask_channel.uid = uid;
+ msg->u.ask_channel.gid = gid;
+ msg->u.ask_channel.relayd_id = relayd_id;
+ msg->u.ask_channel.key = key;
+ msg->u.ask_channel.chan_id = chan_id;
+ msg->u.ask_channel.tracefile_size = tracefile_size;
+ msg->u.ask_channel.tracefile_count = tracefile_count;
+ msg->u.ask_channel.monitor = monitor;
+ msg->u.ask_channel.ust_app_uid = ust_app_uid;
+
+ memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid));
+
+ if (pathname) {
+ strncpy(msg->u.ask_channel.pathname, pathname,
+ sizeof(msg->u.ask_channel.pathname));
+ msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0';
+ }
+
+ strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name));
+ msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0';
+}
+
/*
* Init channel communication message structure.
*/
void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg,
enum lttng_consumer_command cmd,
- int channel_key,
- uint64_t max_sb_size,
- uint64_t mmap_len,
+ uint64_t channel_key,
+ uint64_t session_id,
+ const char *pathname,
+ uid_t uid,
+ gid_t gid,
+ uint64_t relayd_id,
const char *name,
- unsigned int nb_init_streams)
+ unsigned int nb_init_streams,
+ enum lttng_event_output output,
+ int type,
+ uint64_t tracefile_size,
+ uint64_t tracefile_count,
+ unsigned int monitor)
{
assert(msg);
- /* TODO: Args validation */
-
/* Zeroed structure */
memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
/* Send channel */
msg->cmd_type = cmd;
msg->u.channel.channel_key = channel_key;
- msg->u.channel.max_sb_size = max_sb_size;
- msg->u.channel.mmap_len = mmap_len;
+ msg->u.channel.session_id = session_id;
+ msg->u.channel.uid = uid;
+ msg->u.channel.gid = gid;
+ msg->u.channel.relayd_id = relayd_id;
msg->u.channel.nb_init_streams = nb_init_streams;
+ msg->u.channel.output = output;
+ msg->u.channel.type = type;
+ msg->u.channel.tracefile_size = tracefile_size;
+ msg->u.channel.tracefile_count = tracefile_count;
+ msg->u.channel.monitor = monitor;
+
+ strncpy(msg->u.channel.pathname, pathname,
+ sizeof(msg->u.channel.pathname));
+ msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0';
+
+ strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name));
+ msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0';
}
/*
*/
void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg,
enum lttng_consumer_command cmd,
- int channel_key,
- int stream_key,
- uint32_t state,
- enum lttng_event_output output,
- uint64_t mmap_len,
- uid_t uid,
- gid_t gid,
- int net_index,
- unsigned int metadata_flag,
- const char *name,
- const char *pathname,
- unsigned int session_id)
+ uint64_t channel_key,
+ uint64_t stream_key,
+ int cpu)
{
assert(msg);
memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
- /* TODO: Args validation */
-
msg->cmd_type = cmd;
msg->u.stream.channel_key = channel_key;
msg->u.stream.stream_key = stream_key;
- msg->u.stream.state = state;
- msg->u.stream.output = output;
- msg->u.stream.mmap_len = mmap_len;
- msg->u.stream.uid = uid;
- msg->u.stream.gid = gid;
- msg->u.stream.net_index = net_index;
- msg->u.stream.metadata_flag = metadata_flag;
- msg->u.stream.session_id = (uint64_t) session_id;
- strncpy(msg->u.stream.name, name, sizeof(msg->u.stream.name));
- msg->u.stream.name[sizeof(msg->u.stream.name) - 1] = '\0';
- strncpy(msg->u.stream.path_name, pathname,
- sizeof(msg->u.stream.path_name));
- msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0';
+ msg->u.stream.cpu = cpu;
}
/*
assert(msg);
assert(dst);
assert(sock);
-
- switch (dst->type) {
- case CONSUMER_DST_NET:
- /* Consumer should send the stream on the network. */
- msg->u.stream.net_index = dst->net_seq_index;
- break;
- case CONSUMER_DST_LOCAL:
- /* Add stream file name to stream path */
- strncat(msg->u.stream.path_name, "/",
- sizeof(msg->u.stream.path_name) -
- strlen(msg->u.stream.path_name) - 1);
- strncat(msg->u.stream.path_name, msg->u.stream.name,
- sizeof(msg->u.stream.path_name) -
- strlen(msg->u.stream.path_name) - 1);
- msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0';
- /* Indicate that the stream is NOT network */
- msg->u.stream.net_index = -1;
- break;
- default:
- ERR("Consumer unknown output type (%d)", dst->type);
- ret = -1;
- goto error;
- }
+ assert(sock->fd);
+ assert(fds);
/* Send on socket */
- ret = lttcomm_send_unix_sock(sock->fd, msg,
+ ret = lttcomm_send_unix_sock(*sock->fd, msg,
sizeof(struct lttcomm_consumer_msg));
if (ret < 0) {
- PERROR("send consumer stream");
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending consumer stream on sock %d", *sock->fd);
goto error;
}
* On success return positive value. On error, negative value.
*/
int consumer_send_relayd_socket(struct consumer_socket *consumer_sock,
- struct lttcomm_sock *sock, struct consumer_output *consumer,
- enum lttng_stream_type type)
+ struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer,
+ enum lttng_stream_type type, uint64_t session_id)
{
int ret;
struct lttcomm_consumer_msg msg;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
assert(consumer);
assert(consumer_sock);
+ assert(consumer_sock->fd);
/* Bail out if consumer is disabled */
if (!consumer->enabled) {
*/
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));
+ msg.u.relayd_sock.session_id = session_id;
+ memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock));
- DBG3("Sending relayd sock info to consumer on %d", consumer_sock->fd);
- ret = lttcomm_send_unix_sock(consumer_sock->fd, &msg, sizeof(msg));
+ DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd);
+ ret = lttcomm_send_unix_sock(*consumer_sock->fd, &msg, sizeof(msg));
if (ret < 0) {
- PERROR("send consumer relayd socket info");
+ /* The above call will print a PERROR on error. */
+ DBG("Error when sending relayd sockets on sock %d", rsock->sock.fd);
goto error;
}
}
DBG3("Sending relayd socket file descriptor to consumer");
- ret = consumer_send_fds(consumer_sock, &sock->fd, 1);
+ ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1);
if (ret < 0) {
goto error;
}
* This function has a different behavior with the consumer i.e. that it waits
* for a reply from the consumer if yes or no the data is pending.
*/
-int consumer_is_data_pending(unsigned int id,
+int consumer_is_data_pending(uint64_t session_id,
struct consumer_output *consumer)
{
int ret;
msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING;
- msg.u.data_pending.session_id = (uint64_t) id;
+ msg.u.data_pending.session_id = session_id;
- DBG3("Consumer data pending for id %u", id);
+ DBG3("Consumer data pending for id %" PRIu64, session_id);
/* Send command for each consumer */
+ rcu_read_lock();
cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
node.node) {
/* Code flow error */
- assert(socket->fd >= 0);
+ assert(socket->fd);
pthread_mutex_lock(socket->lock);
- ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg));
+ ret = lttcomm_send_unix_sock(*socket->fd, &msg, sizeof(msg));
if (ret < 0) {
- PERROR("send consumer data pending command");
+ /* The above call will print a PERROR on error. */
+ DBG("Error on consumer is data pending on sock %d", *socket->fd);
pthread_mutex_unlock(socket->lock);
- goto error;
+ goto error_unlock;
}
/*
* the reply status message.
*/
- ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code));
- if (ret < 0) {
- PERROR("recv consumer data pending status");
+ ret = lttcomm_recv_unix_sock(*socket->fd, &ret_code, sizeof(ret_code));
+ if (ret <= 0) {
+ if (ret == 0) {
+ /* Orderly shutdown. Don't return 0 which means success. */
+ ret = -1;
+ }
+ /* The above call will print a PERROR on error. */
+ DBG("Error on recv consumer is data pending on sock %d", *socket->fd);
pthread_mutex_unlock(socket->lock);
- goto error;
+ goto error_unlock;
}
pthread_mutex_unlock(socket->lock);
break;
}
}
+ rcu_read_unlock();
- DBG("Consumer data pending ret %d", ret_code);
+ DBG("Consumer data is %s pending for session id %" PRIu64,
+ ret_code == 1 ? "" : "NOT", session_id);
return ret_code;
-error:
+error_unlock:
+ rcu_read_unlock();
return -1;
}
+
+/*
+ * Send a flush command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_flush_channel(struct consumer_socket *socket, uint64_t key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(socket->fd);
+
+ DBG2("Consumer flush channel key %" PRIu64, key);
+
+ msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL;
+ msg.u.flush_channel.key = key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send a close metdata command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_close_metadata(struct consumer_socket *socket,
+ uint64_t metadata_key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(socket->fd);
+
+ DBG2("Consumer close metadata channel key %" PRIu64, metadata_key);
+
+ msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA;
+ msg.u.close_metadata.key = metadata_key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send a setup metdata command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_setup_metadata(struct consumer_socket *socket,
+ uint64_t metadata_key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(socket->fd);
+
+ DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key);
+
+ msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA;
+ msg.u.setup_metadata.key = metadata_key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
+/*
+ * Send metadata string to consumer. Socket lock MUST be acquired.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_push_metadata(struct consumer_socket *socket,
+ uint64_t metadata_key, char *metadata_str, size_t len,
+ size_t target_offset)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(socket->fd);
+
+ DBG2("Consumer push metadata to consumer socket %d", *socket->fd);
+
+ msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA;
+ msg.u.push_metadata.key = metadata_key;
+ msg.u.push_metadata.target_offset = target_offset;
+ msg.u.push_metadata.len = len;
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0 || len == 0) {
+ goto end;
+ }
+
+ DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd, len);
+
+ ret = lttcomm_send_unix_sock(*socket->fd, metadata_str, len);
+ if (ret < 0) {
+ goto end;
+ }
+
+ health_code_update();
+ ret = consumer_recv_status_reply(socket);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer to snapshot a specific channel using the key.
+ *
+ * Return 0 on success or else a negative error.
+ */
+int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
+ struct snapshot_output *output, int metadata, uid_t uid, gid_t gid,
+ const char *session_path, int wait, int max_stream_size)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+ assert(socket->fd);
+ assert(output);
+ assert(output->consumer);
+
+ DBG("Consumer snapshot channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL;
+ msg.u.snapshot_channel.key = key;
+ msg.u.snapshot_channel.max_stream_size = max_stream_size;
+ msg.u.snapshot_channel.metadata = metadata;
+
+ if (output->consumer->type == CONSUMER_DST_NET) {
+ msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index;
+ msg.u.snapshot_channel.use_relayd = 1;
+ ret = snprintf(msg.u.snapshot_channel.pathname,
+ sizeof(msg.u.snapshot_channel.pathname),
+ "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir,
+ output->name, output->datetime, output->nb_snapshot,
+ session_path);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ } else {
+ ret = snprintf(msg.u.snapshot_channel.pathname,
+ sizeof(msg.u.snapshot_channel.pathname),
+ "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path,
+ output->name, output->datetime, output->nb_snapshot,
+ session_path);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL;
+
+ /* Create directory. Ignore if exist. */
+ ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname,
+ S_IRWXU | S_IRWXG, uid, gid);
+ if (ret < 0) {
+ if (ret != -EEXIST) {
+ ERR("Trace directory creation error");
+ goto error;
+ }
+ }
+ }
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ health_code_update();
+ return ret;
+}
projects / lttng-tools.git / blobdiff