+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * 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
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <common/common.h>
-#include <common/consumer.h>
-#include <common/defaults.h>
-
-#include "consumer.h"
-#include "ust-consumer.h"
-
-/*
- * Send all stream fds of UST channel to the consumer.
- */
-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)
-{
- int ret, fd;
- char tmp_path[PATH_MAX];
- const char *pathname;
- struct lttcomm_consumer_msg lum;
- struct ltt_ust_stream *stream, *tmp;
-
- DBG("Sending streams of channel %s to UST consumer", uchan->name);
-
- consumer_init_channel_comm_msg(&lum,
- 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);
- if (ret < 0) {
- goto error;
- }
-
- fd = uchan->obj->shm_fd;
- ret = consumer_send_fds(sock, &fd, 1);
- 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);
- if (ret < 0) {
- PERROR("snprintf stream path");
- goto error;
- }
- pathname = tmp_path;
- DBG3("UST local consumer tracefile path: %s", pathname);
- } else {
- ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s",
- consumer->subdir, path);
- if (ret < 0) {
- PERROR("snprintf stream path");
- goto error;
- }
- pathname = tmp_path;
- DBG3("UST network consumer subdir path: %s", pathname);
- }
-
- 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,
- 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;
- }
- }
-
- DBG("UST consumer channel streams sent");
-
- return 0;
-
-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;
- char tmp_path[PATH_MAX];
- const char *pathname;
- struct lttng_ht_iter iter;
- struct lttcomm_consumer_msg lum;
- struct ust_app_channel *ua_chan;
-
- DBG("Sending metadata stream fd");
-
- if (consumer_fd < 0) {
- ERR("Consumer has negative file descriptor");
- return -EINVAL;
- }
-
- if (usess->metadata->obj->shm_fd != 0) {
- int fd;
- int fds[2];
-
- 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");
-
- ret = consumer_send_channel(sock, &lum);
- if (ret < 0) {
- goto error;
- }
-
- fd = usess->metadata->obj->shm_fd;
- ret = consumer_send_fds(sock, &fd, 1);
- if (ret < 0) {
- goto error;
- }
-
- /* 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");
- 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);
- if (ret < 0) {
- goto error;
- }
- }
-
- /* Send each channel fd streams of session */
- rcu_read_lock();
- cds_lfht_for_each_entry(usess->channels->ht, &iter.iter, ua_chan,
- node.node) {
- /*
- * Indicate that the channel was not created on the tracer side so skip
- * sending unexisting streams.
- */
- if (ua_chan->obj == NULL) {
- continue;
- }
-
- ret = send_channel_streams(sock, ua_chan, usess->path, usess->uid,
- usess->gid, consumer);
- if (ret < 0) {
- rcu_read_unlock();
- goto error;
- }
- }
- rcu_read_unlock();
-
- DBG("consumer fds (metadata and channel streams) sent");
-
- return 0;
-
-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