X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fconsumer.c;h=115a46e2e1898c1e49213ef2dde91aaf07309ce9;hp=c4cfb2fd7af8640cceb63e39e57cb7aa703a8a49;hb=2463b7879c00298daa79744cdaae82ac061a4ed8;hpb=cbf53d23cecaca9c6ec71582663c4a8254a9f285 diff --git a/src/bin/lttng-sessiond/consumer.c b/src/bin/lttng-sessiond/consumer.c index c4cfb2fd7..115a46e2e 100644 --- a/src/bin/lttng-sessiond/consumer.c +++ b/src/bin/lttng-sessiond/consumer.c @@ -1,19 +1,9 @@ /* - * Copyright (C) 2012 - David Goulet - * 2018 - Jérémie Galarneau + * Copyright (C) 2012 David Goulet + * Copyright (C) 2018 Jérémie Galarneau * - * 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. + * SPDX-License-Identifier: GPL-2.0-only * - * 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 _LGPL_SOURCE @@ -46,7 +36,7 @@ * returned. */ char *setup_channel_trace_path(struct consumer_output *consumer, - const char *session_path) + const char *session_path, size_t *consumer_path_offset) { int ret; char *pathname; @@ -69,13 +59,15 @@ char *setup_channel_trace_path(struct consumer_output *consumer, if (consumer->type == CONSUMER_DST_NET && consumer->relay_major_version == 2 && consumer->relay_minor_version < 11) { - ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s/%s%s", + ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s/%s/%s", consumer->dst.net.base_dir, consumer->chunk_path, consumer->domain_subdir, session_path); + *consumer_path_offset = 0; } else { - ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s", + ret = snprintf(pathname, LTTNG_PATH_MAX, "%s/%s", consumer->domain_subdir, session_path); + *consumer_path_offset = strlen(consumer->domain_subdir) + 1; } DBG3("Consumer trace path relative to current trace chunk: \"%s\"", pathname); @@ -101,7 +93,8 @@ error: * * Return 0 on success else a negative value on error. */ -int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len) +int consumer_socket_send( + struct consumer_socket *socket, const void *msg, size_t len) { int fd; ssize_t size; @@ -624,6 +617,7 @@ struct consumer_output *consumer_copy_output(struct consumer_output *src) output->snapshot = src->snapshot; output->relay_major_version = src->relay_major_version; output->relay_minor_version = src->relay_minor_version; + output->relay_allows_clear = src->relay_allows_clear; memcpy(&output->dst, &src->dst, sizeof(output->dst)); ret = consumer_copy_sockets(output, src); if (ret < 0) { @@ -868,7 +862,7 @@ error: * The consumer socket lock must be held by the caller. */ int consumer_send_msg(struct consumer_socket *sock, - struct lttcomm_consumer_msg *msg) + const struct lttcomm_consumer_msg *msg) { int ret; @@ -920,6 +914,7 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, unsigned int switch_timer_interval, unsigned int read_timer_interval, unsigned int live_timer_interval, + bool is_in_live_session, unsigned int monitor_timer_interval, int output, int type, @@ -943,21 +938,23 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, { assert(msg); - /* Zeroed structure */ + /* Zeroed structure */ memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; - if (trace_chunk) { + if (trace_chunk) { uint64_t chunk_id; enum lttng_trace_chunk_status chunk_status; chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); - } - msg->u.ask_channel.buffer_credentials.uid = buffer_credentials->uid; - msg->u.ask_channel.buffer_credentials.gid = buffer_credentials->gid; + } + msg->u.ask_channel.buffer_credentials.uid = + lttng_credentials_get_uid(buffer_credentials); + msg->u.ask_channel.buffer_credentials.gid = + lttng_credentials_get_gid(buffer_credentials); msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; msg->u.ask_channel.subbuf_size = subbuf_size; @@ -966,6 +963,7 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, 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.is_live = is_in_live_session; msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; msg->u.ask_channel.output = output; msg->u.ask_channel.type = type; @@ -1021,6 +1019,7 @@ void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, uint64_t tracefile_count, unsigned int monitor, unsigned int live_timer_interval, + bool is_in_live_session, unsigned int monitor_timer_interval, struct lttng_trace_chunk *trace_chunk) { @@ -1029,14 +1028,14 @@ void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, /* Zeroed structure */ memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); - if (trace_chunk) { + if (trace_chunk) { uint64_t chunk_id; enum lttng_trace_chunk_status chunk_status; chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); - } + } /* Send channel */ msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; @@ -1050,6 +1049,7 @@ void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, msg->u.channel.tracefile_count = tracefile_count; msg->u.channel.monitor = monitor; msg->u.channel.live_timer_interval = live_timer_interval; + msg->u.channel.is_live = is_in_live_session; msg->u.channel.monitor_timer_interval = monitor_timer_interval; strncpy(msg->u.channel.pathname, pathname, @@ -1724,6 +1724,60 @@ error: return ret; } +int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key) +{ + int ret; + const struct lttcomm_consumer_msg msg = { + .cmd_type = LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS, + .u.open_channel_packets.key = key, + }; + + assert(socket); + + DBG("Consumer open channel packets: channel key = %" PRIu64, key); + + health_code_update(); + + pthread_mutex_lock(socket->lock); + ret = consumer_send_msg(socket, &msg); + pthread_mutex_unlock(socket->lock); + if (ret < 0) { + goto error_socket; + } + +error_socket: + health_code_update(); + return ret; +} + +int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) +{ + int ret; + struct lttcomm_consumer_msg msg; + + assert(socket); + + DBG("Consumer clear channel %" PRIu64, key); + + memset(&msg, 0, sizeof(msg)); + msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; + msg.u.clear_channel.key = key; + + health_code_update(); + + pthread_mutex_lock(socket->lock); + ret = consumer_send_msg(socket, &msg); + if (ret < 0) { + goto error_socket; + } + +error_socket: + pthread_mutex_unlock(socket->lock); + + health_code_update(); + return ret; +} + int consumer_init(struct consumer_socket *socket, const lttng_uuid sessiond_uuid) { @@ -1755,13 +1809,15 @@ error: */ int consumer_create_trace_chunk(struct consumer_socket *socket, uint64_t relayd_id, uint64_t session_id, - struct lttng_trace_chunk *chunk) + struct lttng_trace_chunk *chunk, + const char *domain_subdir) { int ret; enum lttng_trace_chunk_status chunk_status; struct lttng_credentials chunk_credentials; - const struct lttng_directory_handle *chunk_directory_handle; - int chunk_dirfd; + const struct lttng_directory_handle *chunk_directory_handle = NULL; + struct lttng_directory_handle *domain_handle = NULL; + int domain_dirfd; const char *chunk_name; bool chunk_name_overridden; uint64_t chunk_id; @@ -1769,6 +1825,7 @@ int consumer_create_trace_chunk(struct consumer_socket *socket, char creation_timestamp_buffer[ISO8601_STR_LEN]; const char *creation_timestamp_str = "(none)"; const bool chunk_has_local_output = relayd_id == -1ULL; + enum lttng_trace_chunk_status tc_status; struct lttcomm_consumer_msg msg = { .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, .u.create_trace_chunk.session_id = session_id, @@ -1836,19 +1893,6 @@ int consumer_create_trace_chunk(struct consumer_socket *socket, ret = -LTTNG_ERR_FATAL; goto error; } - - /* - * This will only compile on platforms that support - * dirfd (POSIX.2008). This is fine as the session daemon - * is only built for such platforms. - * - * The ownership of the chunk directory handle's is maintained - * by the trace chunk. - */ - chunk_dirfd = lttng_directory_handle_get_dirfd( - chunk_directory_handle); - assert(chunk_dirfd >= 0); - chunk_status = lttng_trace_chunk_get_credentials( chunk, &chunk_credentials); if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { @@ -1859,10 +1903,38 @@ int consumer_create_trace_chunk(struct consumer_socket *socket, ret = -LTTNG_ERR_FATAL; goto error; } + tc_status = lttng_trace_chunk_create_subdirectory( + chunk, domain_subdir); + if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { + PERROR("Failed to create chunk domain output directory \"%s\"", + domain_subdir); + ret = -LTTNG_ERR_FATAL; + goto error; + } + domain_handle = lttng_directory_handle_create_from_handle( + domain_subdir, + chunk_directory_handle); + if (!domain_handle) { + ret = -LTTNG_ERR_FATAL; + goto error; + } + + /* + * This will only compile on platforms that support + * dirfd (POSIX.2008). This is fine as the session daemon + * is only built for such platforms. + * + * The ownership of the chunk directory handle's is maintained + * by the trace chunk. + */ + domain_dirfd = lttng_directory_handle_get_dirfd( + domain_handle); + assert(domain_dirfd >= 0); + msg.u.create_trace_chunk.credentials.value.uid = - chunk_credentials.uid; + lttng_credentials_get_uid(&chunk_credentials); msg.u.create_trace_chunk.credentials.value.gid = - chunk_credentials.gid; + lttng_credentials_get_gid(&chunk_credentials); msg.u.create_trace_chunk.credentials.is_set = 1; } @@ -1881,9 +1953,9 @@ int consumer_create_trace_chunk(struct consumer_socket *socket, } if (chunk_has_local_output) { - DBG("Sending trace chunk directory fd to consumer"); + DBG("Sending trace chunk domain directory fd to consumer"); health_code_update(); - ret = consumer_send_fds(socket, &chunk_dirfd, 1); + ret = consumer_send_fds(socket, &domain_dirfd, 1); health_code_update(); if (ret < 0) { ERR("Trace chunk creation error on consumer"); @@ -1892,6 +1964,7 @@ int consumer_create_trace_chunk(struct consumer_socket *socket, } } error: + lttng_directory_handle_put(domain_handle); return ret; }