mirror of
https://github.com/samba-team/samba.git
synced 2024-12-22 13:34:15 +03:00
68f71f227b
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14248 Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
Utility routines
|
|
|
|
Copyright (C) 2020 Ralph Boehme <slow@samba.org>
|
|
|
|
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; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include "lib/tevent/tevent.h"
|
|
#include "lib/util/unix_privs.h"
|
|
#include "server_util.h"
|
|
|
|
struct samba_tevent_trace_state {
|
|
size_t events;
|
|
time_t last_logsize_check;
|
|
};
|
|
|
|
struct samba_tevent_trace_state *create_samba_tevent_trace_state(
|
|
TALLOC_CTX *mem_ctx)
|
|
{
|
|
return talloc_zero(mem_ctx, struct samba_tevent_trace_state);
|
|
}
|
|
|
|
void samba_tevent_trace_callback(enum tevent_trace_point point,
|
|
void *private_data)
|
|
{
|
|
struct samba_tevent_trace_state *state =
|
|
talloc_get_type_abort(private_data,
|
|
struct samba_tevent_trace_state);
|
|
time_t now = time(NULL);
|
|
bool do_check_logs = false;
|
|
void *priv = NULL;
|
|
|
|
switch (point) {
|
|
case TEVENT_TRACE_BEFORE_WAIT:
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
state->events++;
|
|
|
|
/*
|
|
* Throttling by some random numbers. smbd uses a similar logic
|
|
* checking every 50 SMB requests. Assuming 4 events per request
|
|
* we get to the number of 200.
|
|
*/
|
|
if ((state->events % 200) == 0) {
|
|
do_check_logs = true;
|
|
}
|
|
/*
|
|
* Throttling by some delay, choosing 29 to avoid lockstep with
|
|
* the default tevent tickle timer.
|
|
*/
|
|
if ((state->last_logsize_check + 29) < now) {
|
|
do_check_logs = true;
|
|
}
|
|
|
|
if (!do_check_logs) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* need_to_check_log_size() checks both the number of messages
|
|
* that have been logged and if the logging backend is actually
|
|
* going to file. We want to bypass the "number of messages"
|
|
* check, so we have to call force_check_log_size() before.
|
|
*/
|
|
force_check_log_size();
|
|
if (!need_to_check_log_size()) {
|
|
return;
|
|
}
|
|
|
|
priv = root_privileges();
|
|
check_log_size();
|
|
TALLOC_FREE(priv);
|
|
|
|
state->last_logsize_check = now;
|
|
return;
|
|
}
|