+++ /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
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <common/common.h>
-#include <common/defaults.h>
-#include <common/sessiond-comm/sessiond-comm.h>
-
-#include "kernel-consumer.h"
-
-/*
- * Send all stream fds of kernel channel to the consumer.
- */
-int kernel_consumer_send_channel_stream(struct consumer_data *consumer_data,
- int sock, struct ltt_kernel_channel *channel, uid_t uid, gid_t gid)
-{
- int ret, count = 0;
- struct ltt_kernel_stream *stream;
- struct lttcomm_consumer_msg lkm;
-
- DBG("Sending streams of channel %s to kernel consumer",
- channel->channel->name);
-
- /* Send channel */
- lkm.cmd_type = LTTNG_CONSUMER_ADD_CHANNEL;
- lkm.u.channel.channel_key = channel->fd;
- lkm.u.channel.max_sb_size = channel->channel->attr.subbuf_size;
- lkm.u.channel.mmap_len = 0; /* for kernel */
- DBG("Sending channel %d to consumer", lkm.u.channel.channel_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer channel");
- goto error;
- }
-
- /* Send streams */
- cds_list_for_each_entry(stream, &channel->stream_list.head, list) {
- if (!stream->fd) {
- continue;
- }
- /* Reset consumer message structure */
- memset(&lkm, 0, sizeof(lkm));
- lkm.cmd_type = LTTNG_CONSUMER_ADD_STREAM;
- lkm.u.stream.channel_key = channel->fd;
- lkm.u.stream.stream_key = stream->fd;
- lkm.u.stream.state = stream->state;
- lkm.u.stream.output = channel->channel->attr.output;
- lkm.u.stream.mmap_len = 0; /* for kernel */
- lkm.u.stream.uid = uid;
- lkm.u.stream.gid = gid;
- strncpy(lkm.u.stream.path_name, stream->pathname, PATH_MAX - 1);
- lkm.u.stream.path_name[PATH_MAX - 1] = '\0';
- count++;
-
- DBG("Sending stream %d to consumer", lkm.u.stream.stream_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer stream");
- goto error;
- }
- ret = lttcomm_send_fds_unix_sock(sock, &stream->fd, 1);
- if (ret < 0) {
- PERROR("send consumer stream ancillary data");
- goto error;
- }
- }
-
- DBG("consumer channel streams sent");
-
- return 0;
-
-error:
- return ret;
-}
-
-/*
- * Send all stream fds of the kernel session to the consumer.
- */
-int kernel_consumer_send_session(struct consumer_data *consumer_data,
- struct ltt_kernel_session *session)
-{
- int ret;
- struct ltt_kernel_channel *chan;
- struct lttcomm_consumer_msg lkm;
- int sock = session->consumer_fd;
-
- DBG("Sending metadata stream fd");
-
- /* Extra protection. It's NOT supposed to be set to -1 at this point */
- if (session->consumer_fd < 0) {
- session->consumer_fd = consumer_data->cmd_sock;
- }
-
- if (session->metadata_stream_fd >= 0) {
- /* Send metadata channel fd */
- lkm.cmd_type = LTTNG_CONSUMER_ADD_CHANNEL;
- lkm.u.channel.channel_key = session->metadata->fd;
- lkm.u.channel.max_sb_size = session->metadata->conf->attr.subbuf_size;
- lkm.u.channel.mmap_len = 0; /* for kernel */
- DBG("Sending metadata channel %d to consumer", lkm.u.channel.channel_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer channel");
- goto error;
- }
-
- /* Send metadata stream fd */
- lkm.cmd_type = LTTNG_CONSUMER_ADD_STREAM;
- lkm.u.stream.channel_key = session->metadata->fd;
- lkm.u.stream.stream_key = session->metadata_stream_fd;
- lkm.u.stream.state = LTTNG_CONSUMER_ACTIVE_STREAM;
- lkm.u.stream.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
- lkm.u.stream.mmap_len = 0; /* for kernel */
- lkm.u.stream.uid = session->uid;
- lkm.u.stream.gid = session->gid;
- strncpy(lkm.u.stream.path_name, session->metadata->pathname,
- PATH_MAX - 1);
- lkm.u.stream.path_name[PATH_MAX - 1] = '\0';
-
- DBG("Sending metadata stream %d to consumer", lkm.u.stream.stream_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer stream");
- goto error;
- }
- ret = lttcomm_send_fds_unix_sock(sock, &session->metadata_stream_fd, 1);
- if (ret < 0) {
- PERROR("send consumer stream");
- goto error;
- }
- }
-
- cds_list_for_each_entry(chan, &session->channel_list.head, list) {
- ret = kernel_consumer_send_channel_stream(consumer_data, sock, chan,
- session->uid, session->gid);
- if (ret < 0) {
- goto error;
- }
- }
-
- DBG("consumer fds (metadata and channel streams) sent");
-
- return 0;
-
-error:
- return ret;
-}
-
projects / lttng-tools.git / blobdiff