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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
/*
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Unix SMB/CIFS implementation.
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Utility routines
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Copyright (C) 2020 Ralph Boehme <slow@samba.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "lib/tevent/tevent.h"
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#include "lib/util/unix_privs.h"
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#include "server_util.h"
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struct samba_tevent_trace_state {
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size_t events;
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time_t last_logsize_check;
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};
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struct samba_tevent_trace_state *create_samba_tevent_trace_state(
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TALLOC_CTX *mem_ctx)
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{
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return talloc_zero(mem_ctx, struct samba_tevent_trace_state);
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}
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void samba_tevent_trace_callback(enum tevent_trace_point point,
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void *private_data)
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{
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struct samba_tevent_trace_state *state =
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talloc_get_type_abort(private_data,
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struct samba_tevent_trace_state);
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time_t now = time(NULL);
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bool do_check_logs = false;
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void *priv = NULL;
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switch (point) {
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case TEVENT_TRACE_BEFORE_WAIT:
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break;
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default:
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return;
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}
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state->events++;
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/*
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* Throttling by some random numbers. smbd uses a similar logic
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* checking every 50 SMB requests. Assuming 4 events per request
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* we get to the number of 200.
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*/
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if ((state->events % 200) == 0) {
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do_check_logs = true;
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}
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/*
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* Throttling by some delay, choosing 29 to avoid lockstep with
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* the default tevent tickle timer.
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*/
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if ((state->last_logsize_check + 29) < now) {
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do_check_logs = true;
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}
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if (!do_check_logs) {
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return;
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}
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/*
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* need_to_check_log_size() checks both the number of messages
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* that have been logged and if the logging backend is actually
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* going to file. We want to bypass the "number of messages"
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* check, so we have to call force_check_log_size() before.
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*/
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force_check_log_size();
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if (!need_to_check_log_size()) {
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return;
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}
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priv = root_privileges();
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check_log_size();
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TALLOC_FREE(priv);
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state->last_logsize_check = now;
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return;
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}
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