/*
- * Copyright (C) 2012 - Julien Desfossez <jdesfossez@efficios.com>
- * David Goulet <dgoulet@efficios.com>
- * 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
- * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2012 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@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.
+ * 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
static struct relay_conn_queue relay_conn_queue;
/* Cap of file desriptors to be in simultaneous use by the relay daemon. */
-static unsigned int lttng_opt_fd_cap;
+static unsigned int lttng_opt_fd_pool_size = -1;
/* Global relay stream hash table. */
struct lttng_ht *relay_streams_ht;
{ "daemonize", 0, 0, 'd', },
{ "background", 0, 0, 'b', },
{ "group", 1, 0, 'g', },
- { "fd-cap", 1, 0, '\0', },
+ { "fd-pool-size", 1, 0, '\0', },
{ "help", 0, 0, 'h', },
{ "output", 1, 0, 'o', },
{ "verbose", 0, 0, 'v', },
switch (opt) {
case 0:
- if (!strcmp(optname, "fd-cap")) {
+ if (!strcmp(optname, "fd-pool-size")) {
unsigned long v;
errno = 0;
v = strtoul(arg, NULL, 0);
- if (errno != 0 || !isdigit(arg[0])) {
- ERR("Wrong value in --fd-cap parameter: %s",
- arg);
+ if (errno != 0 || !isdigit((unsigned char) arg[0])) {
+ ERR("Wrong value in --fd-pool-size parameter: %s", arg);
ret = -1;
goto end;
}
- if (v < DEFAULT_RELAYD_MINIMAL_FD_CAP) {
- ERR("File descriptor cap must be set to at least %d",
- DEFAULT_RELAYD_MINIMAL_FD_CAP);
- }
if (v >= UINT_MAX) {
- ERR("File descriptor cap overflow in --fd-cap parameter: %s",
- arg);
+ ERR("File descriptor cap overflow in --fd-pool-size parameter: %s", arg);
ret = -1;
goto end;
}
- lttng_opt_fd_cap = (unsigned int) v;
- DBG3("File descriptor cap set to %u", lttng_opt_fd_cap);
+ lttng_opt_fd_pool_size = (unsigned int) v;
} else {
fprintf(stderr, "unknown option %s", optname);
if (arg) {
return ret;
}
+static int set_fd_pool_size(void)
+{
+ int ret = 0;
+ struct rlimit rlimit;
+
+ ret = getrlimit(RLIMIT_NOFILE, &rlimit);
+ if (ret) {
+ PERROR("Failed to get file descriptor limit");
+ ret = -1;
+ goto end;
+ }
+
+ DBG("File descriptor count limits are %" PRIu64 " (soft) and %" PRIu64 " (hard)",
+ (uint64_t) rlimit.rlim_cur,
+ (uint64_t) rlimit.rlim_max);
+ if (lttng_opt_fd_pool_size == -1) {
+ /* Use default value (soft limit - reserve). */
+ if (rlimit.rlim_cur < DEFAULT_RELAYD_MIN_FD_POOL_SIZE) {
+ ERR("The process' file number limit is too low (%" PRIu64 "). The process' file number limit must be set to at least %i.",
+ (uint64_t) rlimit.rlim_cur, DEFAULT_RELAYD_MIN_FD_POOL_SIZE);
+ ret = -1;
+ goto end;
+ }
+ lttng_opt_fd_pool_size = rlimit.rlim_cur -
+ DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE;
+ goto end;
+ }
+
+ if (lttng_opt_fd_pool_size < DEFAULT_RELAYD_MIN_FD_POOL_SIZE) {
+ ERR("File descriptor pool size must be set to at least %d",
+ DEFAULT_RELAYD_MIN_FD_POOL_SIZE);
+ ret = -1;
+ goto end;
+ }
+
+ if (lttng_opt_fd_pool_size > rlimit.rlim_cur) {
+ ERR("File descriptor pool size argument (%u) exceeds the process' soft limit (%" PRIu64 ").",
+ lttng_opt_fd_pool_size, (uint64_t) rlimit.rlim_cur);
+ ret = -1;
+ goto end;
+ }
+
+ DBG("File descriptor pool size argument (%u) adjusted to %u to accommodates transient fd uses",
+ lttng_opt_fd_pool_size,
+ lttng_opt_fd_pool_size - DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE);
+ lttng_opt_fd_pool_size -= DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE;
+end:
+ return ret;
+}
+
static int set_options(int argc, char **argv)
{
int c, ret = 0, option_index = 0, retval = 0;
goto exit;
}
}
- if (lttng_opt_fd_cap == 0) {
- int ret;
- struct rlimit rlimit;
-
- ret = getrlimit(RLIMIT_NOFILE, &rlimit);
- if (ret) {
- PERROR("Failed to get file descriptor limit");
- retval = -1;
- }
-
- lttng_opt_fd_cap = rlimit.rlim_cur;
+ ret = set_fd_pool_size();
+ if (ret) {
+ retval = -1;
+ goto exit;
}
if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_UNKNOWN) {
print_sessions();
}
+static int noop_close(void *data, int *fds)
+{
+ return 0;
+}
+
+static void untrack_stdio(void)
+{
+ int fds[] = { fileno(stdout), fileno(stderr) };
+
+ /*
+ * noop_close is used since we don't really want to close
+ * the stdio output fds; we merely want to stop tracking them.
+ */
+ (void) fd_tracker_close_unsuspendable_fd(the_fd_tracker,
+ fds, 2, noop_close, NULL);
+}
+
/*
* Cleanup the daemon
*/
}
ret = fd_tracker_util_poll_create(the_fd_tracker,
- name, events, 1, LTTNG_CLOEXEC);
+ name, events, 1, LTTNG_CLOEXEC);
+ if (ret) {
+ PERROR("Failed to create \"%s\" poll file descriptor", name);
+ goto error;
+ }
/* Add quit pipe */
ret = lttng_poll_add(events, thread_quit_pipe[0], LPOLLIN | LPOLLERR);
return sock->ops->close(sock);
}
+static int accept_sock(void *data, int *out_fd)
+{
+ int ret = 0;
+ /* Socks is an array of in_sock, out_sock. */
+ struct lttcomm_sock **socks = data;
+ struct lttcomm_sock *in_sock = socks[0];
+
+ socks[1] = in_sock->ops->accept(in_sock);
+ if (!socks[1]) {
+ ret = -1;
+ goto end;
+ }
+ *out_fd = socks[1]->fd;
+end:
+ return ret;
+}
+
/*
* Create and init socket from uri.
*/
ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &sock_fd,
(const char **) (formated_name ? &formated_name : NULL),
1, create_sock, sock);
- free(formated_name);
+ if (ret) {
+ PERROR("Failed to open \"%s\" relay socket",
+ formated_name ?: "Unknown");
+ goto error;
+ }
DBG("Listening on %s socket %d", name, sock->fd);
ret = sock->ops->bind(sock);
}
+ free(formated_name);
return sock;
error:
if (sock) {
lttcomm_destroy_sock(sock);
}
+ free(formated_name);
return NULL;
}
+static
+struct lttcomm_sock *accept_relayd_sock(struct lttcomm_sock *listening_sock,
+ const char *name)
+{
+ int out_fd, ret;
+ struct lttcomm_sock *socks[2] = { listening_sock, NULL };
+ struct lttcomm_sock *new_sock = NULL;
+
+ ret = fd_tracker_open_unsuspendable_fd(
+ the_fd_tracker, &out_fd,
+ (const char **) &name,
+ 1, accept_sock, &socks);
+ if (ret) {
+ goto end;
+ }
+ new_sock = socks[1];
+ DBG("%s accepted, socket %d", name, new_sock->fd);
+end:
+ return new_sock;
+}
+
/*
* This thread manages the listening for new connections on the network
*/
DBG("[thread] Relay listener started");
+ rcu_register_thread();
health_register(health_relayd, HEALTH_RELAYD_TYPE_LISTENER);
health_code_update();
*/
int val = 1;
struct relay_connection *new_conn;
- struct lttcomm_sock *newsock;
+ struct lttcomm_sock *newsock = NULL;
enum connection_type type;
if (pollfd == data_sock->fd) {
type = RELAY_DATA;
- newsock = data_sock->ops->accept(data_sock);
- DBG("Relay data connection accepted, socket %d",
- newsock->fd);
+ newsock = accept_relayd_sock(data_sock,
+ "Data socket to relayd");
} else {
assert(pollfd == control_sock->fd);
type = RELAY_CONTROL;
- newsock = control_sock->ops->accept(control_sock);
- DBG("Relay control connection accepted, socket %d",
- newsock->fd);
+ newsock = accept_relayd_sock(control_sock,
+ "Control socket to relayd");
}
if (!newsock) {
PERROR("accepting sock");
ERR("Health error occurred in %s", __func__);
}
health_unregister(health_relayd);
+ rcu_unregister_thread();
DBG("Relay listener thread cleanup complete");
lttng_relay_stop_threads();
return NULL;
group_by_session_path_name =
backward_compat_group_by_session(
path_name,
- session->session_name);
+ session->session_name,
+ session->creation_time.value);
if (!group_by_session_path_name) {
ERR("Failed to apply group by session to stream of session %" PRIu64,
session->id);
struct lttng_trace_chunk *chunk = NULL, *published_chunk = NULL;
enum lttng_error_code reply_code = LTTNG_OK;
enum lttng_trace_chunk_status chunk_status;
- struct lttng_directory_handle *session_output = NULL;
const char *new_path;
if (!session || !conn->version_check_done) {
reply_code = LTTNG_ERR_NOMEM;
goto end;
}
+ lttng_trace_chunk_set_fd_tracker(chunk, the_fd_tracker);
if (msg->override_name_length) {
const char *name;
goto end;
}
- session_output = session_create_output_directory_handle(
- conn->session);
- if (!session_output) {
- reply_code = LTTNG_ERR_CREATE_DIR_FAIL;
- goto end;
- }
- chunk_status = lttng_trace_chunk_set_as_owner(chunk, session_output);
- lttng_directory_handle_put(session_output);
- session_output = NULL;
+ assert(conn->session->output_directory);
+ chunk_status = lttng_trace_chunk_set_as_owner(chunk,
+ conn->session->output_directory);
if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
reply_code = LTTNG_ERR_UNK;
ret = -1;
end_no_reply:
lttng_trace_chunk_put(chunk);
lttng_trace_chunk_put(published_chunk);
- lttng_directory_handle_put(session_output);
return ret;
}
new_path);
if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
ret = -1;
- goto end;
+ goto end_unlock_session;
}
session->ongoing_rotation = false;
}
chunk_status = lttng_trace_chunk_rename_path(chunk, old_path);
if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
ret = -1;
- goto end;
+ goto end_unlock_session;
}
}
chunk_status = lttng_trace_chunk_set_close_timestamp(
(void) lttng_poll_del(events, pollfd);
- ret = close(pollfd);
+ ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker, &pollfd, 1,
+ fd_tracker_util_close_fd, NULL);
if (ret < 0) {
ERR("Closing pollfd %d", pollfd);
}
return 0;
}
-static int noop_close(void *data, int *fds)
-{
- return 0;
-}
-
static int track_stdio(void)
{
int fds[2];
names, 2, stdio_open, NULL);
}
-static void untrack_stdio(void)
-{
- int fds[] = { fileno(stdout), fileno(stderr) };
-
- /*
- * noop_close is used since we don't really want to close
- * the stdio output fds; we merely want to stop tracking them.
- */
- (void) fd_tracker_close_unsuspendable_fd(the_fd_tracker,
- fds, 2, noop_close, NULL);
-}
-
/*
* main
*/
bool thread_is_rcu_registered = false;
int ret = 0, retval = 0;
void *status;
+ char *unlinked_file_directory_path = NULL, *output_path = NULL;
/* Parse environment variables */
ret = parse_env_options();
rcu_register_thread();
thread_is_rcu_registered = true;
- the_fd_tracker = fd_tracker_create(lttng_opt_fd_cap);
+ output_path = create_output_path("");
+ if (!output_path) {
+ ERR("Failed to get output path");
+ retval = -1;
+ goto exit_options;
+ }
+ ret = asprintf(&unlinked_file_directory_path, "%s/%s", output_path,
+ DEFAULT_UNLINKED_FILES_DIRECTORY);
+ free(output_path);
+ if (ret < 0) {
+ ERR("Failed to format unlinked file directory path");
+ retval = -1;
+ goto exit_options;
+ }
+ the_fd_tracker = fd_tracker_create(
+ unlinked_file_directory_path, lttng_opt_fd_pool_size);
+ free(unlinked_file_directory_path);
if (!the_fd_tracker) {
retval = -1;
goto exit_options;
projects / lttng-tools.git / blobdiff