+++ /dev/null
-/*
- * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License, version 2 only, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _GNU_SOURCE
-#define _LGPL_SOURCE
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#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 <common/relayd/relayd.h>
-
-#include "consumer.h"
-#include "health-sessiond.h"
-#include "ust-app.h"
-#include "utils.h"
-
-/*
- * Send a data payload using a given consumer socket of size len.
- *
- * The consumer socket lock MUST be acquired before calling this since this
- * function can change the fd value.
- *
- * Return 0 on success else a negative value on error.
- */
-int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len)
-{
- int fd;
- ssize_t size;
-
- assert(socket);
- assert(socket->fd_ptr);
- assert(msg);
-
- /* Consumer socket is invalid. Stopping. */
- fd = *socket->fd_ptr;
- if (fd < 0) {
- goto error;
- }
-
- size = lttcomm_send_unix_sock(fd, msg, len);
- if (size < 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when sending data to consumer on sock %d", fd);
- /*
- * At this point, the socket is not usable anymore thus closing it and
- * setting the file descriptor to -1 so it is not reused.
- */
-
- /* This call will PERROR on error. */
- (void) lttcomm_close_unix_sock(fd);
- *socket->fd_ptr = -1;
- goto error;
- }
-
- return 0;
-
-error:
- return -1;
-}
-
-/*
- * Receive a data payload using a given consumer socket of size len.
- *
- * The consumer socket lock MUST be acquired before calling this since this
- * function can change the fd value.
- *
- * Return 0 on success else a negative value on error.
- */
-int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len)
-{
- int fd;
- ssize_t size;
-
- assert(socket);
- assert(socket->fd_ptr);
- assert(msg);
-
- /* Consumer socket is invalid. Stopping. */
- fd = *socket->fd_ptr;
- if (fd < 0) {
- goto error;
- }
-
- size = lttcomm_recv_unix_sock(fd, msg, len);
- if (size <= 0) {
- /* The above call will print a PERROR on error. */
- DBG("Error when receiving data from the consumer socket %d", fd);
- /*
- * At this point, the socket is not usable anymore thus closing it and
- * setting the file descriptor to -1 so it is not reused.
- */
-
- /* This call will PERROR on error. */
- (void) lttcomm_close_unix_sock(fd);
- *socket->fd_ptr = -1;
- goto error;
- }
-
- return 0;
-
-error:
- return -1;
-}
-
-/*
- * Receive a reply command status message from the consumer. Consumer socket
- * lock MUST be acquired before calling this function.
- *
- * Return 0 on success, -1 on recv error or a negative lttng error code which
- * was possibly returned by the consumer.
- */
-int consumer_recv_status_reply(struct consumer_socket *sock)
-{
- int ret;
- struct lttcomm_consumer_status_msg reply;
-
- assert(sock);
-
- ret = consumer_socket_recv(sock, &reply, sizeof(reply));
- if (ret < 0) {
- goto end;
- }
-
- if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) {
- /* All good. */
- ret = 0;
- } else {
- ret = -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 = consumer_socket_recv(sock, &reply, sizeof(reply));
- if (ret < 0) {
- goto end;
- }
-
- /* An error is possible so don't touch the key and stream_count. */
- if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) {
- ret = -1;
- goto end;
- }
-
- *key = reply.key;
- *stream_count = reply.stream_count;
- ret = 0;
-
-end:
- return ret;
-}
-
-/*
- * Send destroy relayd command to consumer.
- *
- * On success return positive value. On error, negative value.
- */
-int consumer_send_destroy_relayd(struct consumer_socket *sock,
- struct consumer_output *consumer)
-{
- int ret;
- struct lttcomm_consumer_msg msg;
-
- assert(consumer);
- assert(sock);
-
- DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr);
-
- memset(&msg, 0, sizeof(msg));
- msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD;
- msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index;
-
- pthread_mutex_lock(sock->lock);
- ret = consumer_socket_send(sock, &msg, sizeof(msg));
- if (ret < 0) {
- goto error;
- }
-
- /* Don't check the return value. The caller will do it. */
- ret = consumer_recv_status_reply(sock);
-
- DBG2("Consumer send destroy relayd command done");
-
-error:
- pthread_mutex_unlock(sock->lock);
- return ret;
-}
-
-/*
- * For each consumer socket in the consumer output object, send a destroy
- * relayd command.
- */
-void consumer_output_send_destroy_relayd(struct consumer_output *consumer)
-{
- struct lttng_ht_iter iter;
- struct consumer_socket *socket;
-
- assert(consumer);
-
- /* Destroy any relayd connection */
- 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) {
- DBG("Unable to send destroy relayd command to consumer");
- /* Continue since we MUST delete everything at this point. */
- }
- }
- rcu_read_unlock();
- }
-}
-
-/*
- * From a consumer_data structure, allocate and add a consumer socket to the
- * consumer output.
- *
- * Return 0 on success, else negative value on error
- */
-int consumer_create_socket(struct consumer_data *data,
- struct consumer_output *output)
-{
- int ret = 0;
- struct consumer_socket *socket;
-
- assert(data);
-
- if (output == NULL || data->cmd_sock < 0) {
- /*
- * Not an error. Possible there is simply not spawned consumer or it's
- * disabled for the tracing session asking the socket.
- */
- goto error;
- }
-
- rcu_read_lock();
- socket = consumer_find_socket(data->cmd_sock, output);
- rcu_read_unlock();
- if (socket == NULL) {
- socket = consumer_allocate_socket(&data->cmd_sock);
- if (socket == NULL) {
- ret = -1;
- goto error;
- }
-
- socket->registered = 0;
- socket->lock = &data->lock;
- rcu_read_lock();
- consumer_add_socket(socket, output);
- rcu_read_unlock();
- }
-
- socket->type = data->type;
-
- DBG3("Consumer socket created (fd: %d) and added to output",
- data->cmd_sock);
-
-error:
- 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
- * returned consumer_socket.
- */
-struct consumer_socket *consumer_find_socket(int key,
- struct consumer_output *consumer)
-{
- struct lttng_ht_iter iter;
- struct lttng_ht_node_ulong *node;
- struct consumer_socket *socket = NULL;
-
- /* Negative keys are lookup failures */
- if (key < 0 || consumer == NULL) {
- return NULL;
- }
-
- lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key),
- &iter);
- node = lttng_ht_iter_get_node_ulong(&iter);
- if (node != NULL) {
- socket = caa_container_of(node, struct consumer_socket, node);
- }
-
- return socket;
-}
-
-/*
- * Allocate a new consumer_socket and return the pointer.
- */
-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");
- goto error;
- }
-
- socket->fd_ptr = fd;
- lttng_ht_node_init_ulong(&socket->node, *fd);
-
-error:
- return socket;
-}
-
-/*
- * Add consumer socket to consumer output object. Read side lock must be
- * acquired before calling this function.
- */
-void consumer_add_socket(struct consumer_socket *sock,
- struct consumer_output *consumer)
-{
- assert(sock);
- assert(consumer);
-
- lttng_ht_add_unique_ulong(consumer->socks, &sock->node);
-}
-
-/*
- * Delte consumer socket to consumer output object. Read side lock must be
- * acquired before calling this function.
- */
-void consumer_del_socket(struct consumer_socket *sock,
- struct consumer_output *consumer)
-{
- int ret;
- struct lttng_ht_iter iter;
-
- assert(sock);
- assert(consumer);
-
- iter.iter.node = &sock->node.node;
- ret = lttng_ht_del(consumer->socks, &iter);
- assert(!ret);
-}
-
-/*
- * RCU destroy call function.
- */
-static void destroy_socket_rcu(struct rcu_head *head)
-{
- struct lttng_ht_node_ulong *node =
- caa_container_of(head, struct lttng_ht_node_ulong, head);
- struct consumer_socket *socket =
- caa_container_of(node, struct consumer_socket, node);
-
- free(socket);
-}
-
-/*
- * Destroy and free socket pointer in a call RCU. Read side lock must be
- * acquired before calling this function.
- */
-void consumer_destroy_socket(struct consumer_socket *sock)
-{
- assert(sock);
-
- /*
- * We DO NOT close the file descriptor here since it is global to the
- * session daemon and is closed only if the consumer dies or a custom
- * consumer was registered,
- */
- if (sock->registered) {
- DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr);
- lttcomm_close_unix_sock(*sock->fd_ptr);
- }
-
- call_rcu(&sock->node.head, destroy_socket_rcu);
-}
-
-/*
- * Allocate and assign data to a consumer_output object.
- *
- * Return pointer to structure.
- */
-struct consumer_output *consumer_create_output(enum consumer_dst_type type)
-{
- struct consumer_output *output = NULL;
-
- output = zmalloc(sizeof(struct consumer_output));
- if (output == NULL) {
- PERROR("zmalloc consumer_output");
- goto error;
- }
-
- /* By default, consumer output is enabled */
- output->enabled = 1;
- output->type = type;
- output->net_seq_index = (uint64_t) -1ULL;
-
- output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
-
-error:
- 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)
-{
- if (obj == NULL) {
- return;
- }
-
- consumer_destroy_output_sockets(obj);
-
- if (obj->socks) {
- /* Finally destroy HT */
- 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 consumer_output *output;
-
- assert(obj);
-
- output = consumer_create_output(obj->type);
- if (output == NULL) {
- goto error;
- }
- /* Avoid losing the HT reference after the memcpy() */
- tmp_ht_ptr = output->socks;
-
- memcpy(output, obj, sizeof(struct consumer_output));
-
- /* Putting back the HT pointer and start copying socket(s). */
- output->socks = tmp_ht_ptr;
-
- 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_ptr, dst);
- if (copy_sock) {
- continue;
- }
-
- /* Create new socket object. */
- copy_sock = consumer_allocate_socket(socket->fd_ptr);
- if (copy_sock == NULL) {
- 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, dst);
- }
- rcu_read_unlock();
-
-error:
- return ret;
-}
-
-/*
- * Set network URI to the consumer output object.
- *
- * Return 0 on success. Return 1 if the URI were equal. Else, negative value on
- * error.
- */
-int consumer_set_network_uri(struct consumer_output *obj,
- struct lttng_uri *uri)
-{
- int ret;
- char tmp_path[PATH_MAX];
- char hostname[HOST_NAME_MAX];
- struct lttng_uri *dst_uri = NULL;
-
- /* Code flow error safety net. */
- assert(obj);
- assert(uri);
-
- switch (uri->stype) {
- case LTTNG_STREAM_CONTROL:
- dst_uri = &obj->dst.net.control;
- obj->dst.net.control_isset = 1;
- 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;
- case LTTNG_STREAM_DATA:
- dst_uri = &obj->dst.net.data;
- obj->dst.net.data_isset = 1;
- 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;
- }
-
- ret = uri_compare(dst_uri, uri);
- if (!ret) {
- /* Same URI, don't touch it and return success. */
- DBG3("URI network compare are the same");
- goto equal;
- }
-
- /* URIs were not equal, replacing it. */
- memset(dst_uri, 0, sizeof(struct lttng_uri));
- memcpy(dst_uri, uri, sizeof(struct lttng_uri));
- obj->type = CONSUMER_DST_NET;
-
- /* Handle subdir and add hostname in front. */
- if (dst_uri->stype == LTTNG_STREAM_CONTROL) {
- /* Get hostname to append it in the pathname */
- ret = gethostname(hostname, sizeof(hostname));
- if (ret < 0) {
- PERROR("gethostname. Fallback on default localhost");
- strncpy(hostname, "localhost", sizeof(hostname));
- }
- hostname[sizeof(hostname) - 1] = '\0';
-
- /* Setup consumer subdir if none present in the control URI */
- if (strlen(dst_uri->subdir) == 0) {
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- hostname, obj->subdir);
- } else {
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- hostname, dst_uri->subdir);
- }
- if (ret < 0) {
- PERROR("snprintf set consumer uri subdir");
- ret = -LTTNG_ERR_NOMEM;
- goto error;
- }
-
- strncpy(obj->subdir, tmp_path, sizeof(obj->subdir));
- DBG3("Consumer set network uri subdir path %s", tmp_path);
- }
-
- return 0;
-equal:
- return 1;
-error:
- return ret;
-}
-
-/*
- * Send file descriptor to consumer via sock.
- */
-int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd)
-{
- int ret;
-
- assert(fds);
- assert(sock);
- assert(nb_fd > 0);
-
- ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, 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_ptr);
- 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);
-
- ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg));
- if (ret < 0) {
- goto error;
- }
-
- ret = consumer_recv_status_reply(sock);
-
-error:
- return ret;
-}
-
-/*
- * Consumer send channel communication message structure to consumer.
- */
-int consumer_send_channel(struct consumer_socket *sock,
- struct lttcomm_consumer_msg *msg)
-{
- int ret;
-
- assert(msg);
- assert(sock);
-
- ret = consumer_send_msg(sock, msg);
- if (ret < 0) {
- goto error;
- }
-
-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,
- unsigned int live_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.live_timer_interval = live_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,
- 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,
- enum lttng_event_output output,
- int type,
- uint64_t tracefile_size,
- uint64_t tracefile_count,
- unsigned int monitor,
- unsigned int live_timer_interval)
-{
- assert(msg);
-
- /* 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.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;
- msg->u.channel.live_timer_interval = live_timer_interval;
-
- 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';
-}
-
-/*
- * Init stream communication message structure.
- */
-void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg,
- enum lttng_consumer_command cmd,
- uint64_t channel_key,
- uint64_t stream_key,
- int cpu)
-{
- assert(msg);
-
- memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
-
- msg->cmd_type = cmd;
- msg->u.stream.channel_key = channel_key;
- msg->u.stream.stream_key = stream_key;
- msg->u.stream.cpu = cpu;
-}
-
-void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg,
- enum lttng_consumer_command cmd,
- uint64_t channel_key, uint64_t net_seq_idx)
-{
- assert(msg);
-
- memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
-
- msg->cmd_type = cmd;
- msg->u.sent_streams.channel_key = channel_key;
- msg->u.sent_streams.net_seq_idx = net_seq_idx;
-}
-
-/*
- * Send stream communication structure to the consumer.
- */
-int consumer_send_stream(struct consumer_socket *sock,
- struct consumer_output *dst, struct lttcomm_consumer_msg *msg,
- int *fds, size_t nb_fd)
-{
- int ret;
-
- assert(msg);
- assert(dst);
- assert(sock);
- assert(fds);
-
- ret = consumer_send_msg(sock, msg);
- if (ret < 0) {
- goto error;
- }
-
- ret = consumer_send_fds(sock, fds, nb_fd);
- if (ret < 0) {
- 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 consumer_send_relayd_socket(struct consumer_socket *consumer_sock,
- struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer,
- enum lttng_stream_type type, uint64_t session_id,
- char *session_name, char *hostname, int session_live_timer)
-{
- int ret;
- struct lttcomm_consumer_msg msg;
-
- /* Code flow error. Safety net. */
- assert(rsock);
- assert(consumer);
- assert(consumer_sock);
-
- memset(&msg, 0, sizeof(msg));
- /* Bail out if consumer is disabled */
- if (!consumer->enabled) {
- ret = LTTNG_OK;
- goto error;
- }
-
- if (type == LTTNG_STREAM_CONTROL) {
- ret = relayd_create_session(rsock,
- &msg.u.relayd_sock.relayd_session_id,
- session_name, hostname, session_live_timer,
- consumer->snapshot);
- if (ret < 0) {
- /* Close the control socket. */
- (void) relayd_close(rsock);
- goto error;
- }
- }
-
- msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET;
- /*
- * Assign network consumer output index using the temporary consumer since
- * this call should only be made from within a set_consumer_uri() function
- * call in the session daemon.
- */
- msg.u.relayd_sock.net_index = consumer->net_seq_index;
- msg.u.relayd_sock.type = type;
- 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_ptr);
- ret = consumer_send_msg(consumer_sock, &msg);
- if (ret < 0) {
- goto error;
- }
-
- DBG3("Sending relayd socket file descriptor to consumer");
- ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1);
- if (ret < 0) {
- goto error;
- }
-
- DBG2("Consumer relayd socket sent");
-
-error:
- return ret;
-}
-
-/*
- * Set consumer subdirectory using the session name and a generated datetime if
- * needed. This is appended to the current subdirectory.
- */
-int consumer_set_subdir(struct consumer_output *consumer,
- const char *session_name)
-{
- int ret = 0;
- unsigned int have_default_name = 0;
- char datetime[16], tmp_path[PATH_MAX];
- time_t rawtime;
- struct tm *timeinfo;
-
- assert(consumer);
- assert(session_name);
-
- memset(tmp_path, 0, sizeof(tmp_path));
-
- /* Flag if we have a default session. */
- if (strncmp(session_name, DEFAULT_SESSION_NAME "-",
- strlen(DEFAULT_SESSION_NAME) + 1) == 0) {
- have_default_name = 1;
- } else {
- /* Get date and time for session path */
- time(&rawtime);
- timeinfo = localtime(&rawtime);
- strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo);
- }
-
- if (have_default_name) {
- ret = snprintf(tmp_path, sizeof(tmp_path),
- "%s/%s", consumer->subdir, session_name);
- } else {
- ret = snprintf(tmp_path, sizeof(tmp_path),
- "%s/%s-%s/", consumer->subdir, session_name, datetime);
- }
- if (ret < 0) {
- PERROR("snprintf session name date");
- goto error;
- }
-
- strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir));
- DBG2("Consumer subdir set to %s", consumer->subdir);
-
-error:
- return ret;
-}
-
-/*
- * Ask the consumer if the data is ready to read (NOT pending) for the specific
- * session id.
- *
- * 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(uint64_t session_id,
- struct consumer_output *consumer)
-{
- int ret;
- int32_t ret_code = 0; /* Default is that the data is NOT pending */
- struct consumer_socket *socket;
- struct lttng_ht_iter iter;
- struct lttcomm_consumer_msg msg;
-
- assert(consumer);
-
- DBG3("Consumer data pending for id %" PRIu64, session_id);
-
- memset(&msg, 0, sizeof(msg));
- msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING;
- msg.u.data_pending.session_id = session_id;
-
- /* Send command for each consumer */
- rcu_read_lock();
- cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket,
- node.node) {
- pthread_mutex_lock(socket->lock);
- ret = consumer_socket_send(socket, &msg, sizeof(msg));
- if (ret < 0) {
- pthread_mutex_unlock(socket->lock);
- goto error_unlock;
- }
-
- /*
- * No need for a recv reply status because the answer to the command is
- * the reply status message.
- */
-
- ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code));
- if (ret < 0) {
- pthread_mutex_unlock(socket->lock);
- goto error_unlock;
- }
- pthread_mutex_unlock(socket->lock);
-
- if (ret_code == 1) {
- break;
- }
- }
- rcu_read_unlock();
-
- DBG("Consumer data is %s pending for session id %" PRIu64,
- ret_code == 1 ? "" : "NOT", session_id);
- return ret_code;
-
-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);
-
- DBG2("Consumer flush channel key %" PRIu64, key);
-
- memset(&msg, 0, sizeof(msg));
- 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);
-
- DBG2("Consumer close metadata channel key %" PRIu64, metadata_key);
-
- memset(&msg, 0, sizeof(msg));
- 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);
-
- DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key);
-
- memset(&msg, 0, sizeof(msg));
- 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);
-
- DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr);
-
- memset(&msg, 0, sizeof(msg));
- 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_ptr,
- len);
-
- ret = consumer_socket_send(socket, 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, uint64_t nb_packets_per_stream)
-{
- int ret;
- struct lttcomm_consumer_msg msg;
-
- assert(socket);
- 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.nb_packets_per_stream = nb_packets_per_stream;
- 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