X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=lttng-sessiond%2Fust-consumer.c;fp=lttng-sessiond%2Fust-consumer.c;h=0000000000000000000000000000000000000000;hp=c02cbf96588c2c4701c7c9e9667c590582c1723e;hb=10a8a2237343699e3923d87e24dbf2d7fe225377;hpb=734f79bf717d87817623d382c59086dc9e8ef610 diff --git a/lttng-sessiond/ust-consumer.c b/lttng-sessiond/ust-consumer.c deleted file mode 100644 index c02cbf965..000000000 --- a/lttng-sessiond/ust-consumer.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * Copyright (C) 2011 - David Goulet - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; only version 2 of the License. - * - * 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., 59 Temple - * Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#define _GNU_SOURCE -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#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, - uid_t uid, gid_t gid) -{ - int ret, fd; - struct lttcomm_consumer_msg lum; - struct ltt_ust_stream *stream, *tmp; - - DBG("Sending streams of channel %s to UST consumer", uchan->name); - - /* Send channel */ - lum.cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; - - /* - * We need to keep shm_fd open while we transfer the stream file - * descriptors to make sure this key stays unique within the - * session daemon. We can free the channel shm_fd without - * problem after we finished sending stream fds for that - * channel. - */ - lum.u.channel.channel_key = uchan->obj->shm_fd; - lum.u.channel.max_sb_size = uchan->attr.subbuf_size; - lum.u.channel.mmap_len = uchan->obj->memory_map_size; - DBG("Sending channel %d to consumer", lum.u.channel.channel_key); - ret = lttcomm_send_unix_sock(sock, &lum, sizeof(lum)); - if (ret < 0) { - perror("send consumer channel"); - goto error; - } - fd = uchan->obj->shm_fd; - ret = lttcomm_send_fds_unix_sock(sock, &fd, 1); - if (ret < 0) { - perror("send consumer channel ancillary data"); - goto error; - } - - cds_list_for_each_entry_safe(stream, tmp, &uchan->streams.head, list) { - int fds[2]; - - if (!stream->obj->shm_fd) { - continue; - } - lum.cmd_type = LTTNG_CONSUMER_ADD_STREAM; - lum.u.stream.channel_key = uchan->obj->shm_fd; - lum.u.stream.stream_key = stream->obj->shm_fd; - lum.u.stream.state = LTTNG_CONSUMER_ACTIVE_STREAM; - /* - * FIXME Hack alert! we force MMAP for now. Mixup - * between EVENT and UST enums elsewhere. - */ - lum.u.stream.output = DEFAULT_UST_CHANNEL_OUTPUT; - lum.u.stream.mmap_len = stream->obj->memory_map_size; - lum.u.stream.uid = uid; - lum.u.stream.gid = gid; - strncpy(lum.u.stream.path_name, stream->pathname, PATH_MAX - 1); - lum.u.stream.path_name[PATH_MAX - 1] = '\0'; - DBG("Sending stream %d to consumer", lum.u.stream.stream_key); - ret = lttcomm_send_unix_sock(sock, &lum, sizeof(lum)); - if (ret < 0) { - perror("send consumer stream"); - goto error; - } - - fds[0] = stream->obj->shm_fd; - fds[1] = stream->obj->wait_fd; - ret = lttcomm_send_fds_unix_sock(sock, fds, 2); - 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 UST session to the consumer. - */ -int ust_consumer_send_session(int consumer_fd, struct ust_app_session *usess) -{ - int ret = 0; - int sock = consumer_fd; - 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]; - - /* Send metadata channel fd */ - lum.cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; - lum.u.channel.channel_key = usess->metadata->obj->shm_fd; - lum.u.channel.max_sb_size = usess->metadata->attr.subbuf_size; - lum.u.channel.mmap_len = usess->metadata->obj->memory_map_size; - DBG("Sending metadata channel %d to consumer", lum.u.channel.channel_key); - ret = lttcomm_send_unix_sock(sock, &lum, sizeof(lum)); - if (ret < 0) { - perror("send consumer channel"); - goto error; - } - fd = usess->metadata->obj->shm_fd; - ret = lttcomm_send_fds_unix_sock(sock, &fd, 1); - if (ret < 0) { - perror("send consumer metadata channel"); - goto error; - } - - /* Send metadata stream fd */ - lum.cmd_type = LTTNG_CONSUMER_ADD_STREAM; - lum.u.stream.channel_key = usess->metadata->obj->shm_fd; - lum.u.stream.stream_key = usess->metadata->stream_obj->shm_fd; - lum.u.stream.state = LTTNG_CONSUMER_ACTIVE_STREAM; - lum.u.stream.output = DEFAULT_UST_CHANNEL_OUTPUT; - lum.u.stream.mmap_len = usess->metadata->stream_obj->memory_map_size; - lum.u.stream.uid = usess->uid; - lum.u.stream.gid = usess->gid; - strncpy(lum.u.stream.path_name, usess->metadata->pathname, PATH_MAX - 1); - lum.u.stream.path_name[PATH_MAX - 1] = '\0'; - DBG("Sending metadata stream %d to consumer", lum.u.stream.stream_key); - ret = lttcomm_send_unix_sock(sock, &lum, sizeof(lum)); - if (ret < 0) { - perror("send consumer metadata stream"); - goto error; - } - fds[0] = usess->metadata->stream_obj->shm_fd; - fds[1] = usess->metadata->stream_obj->wait_fd; - ret = lttcomm_send_fds_unix_sock(sock, fds, 2); - if (ret < 0) { - perror("send consumer stream"); - 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) { - ret = send_channel_streams(sock, ua_chan, usess->uid, usess->gid); - if (ret < 0) { - rcu_read_unlock(); - goto error; - } - } - rcu_read_unlock(); - - DBG("consumer fds (metadata and channel streams) sent"); - - return 0; - -error: - return ret; -}