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init/lib/cron/crontab.c
David Oberhollenzer 5cd5f48f76 Add helper library for cron configuration
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
2018-09-17 14:53:19 +02:00

50 lines
1.4 KiB
C

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* 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 <https://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "crontab.h"
void cron_tm_to_mask(crontab_t *out, struct tm *t)
{
memset(out, 0, sizeof(*out));
out->minute = 1UL << ((unsigned long)t->tm_min);
out->hour = 1 << t->tm_hour;
out->dayofmonth = 1 << (t->tm_mday - 1);
out->month = 1 << t->tm_mon;
out->dayofweek = 1 << t->tm_wday;
}
bool cron_should_run(const crontab_t *t, const crontab_t *mask)
{
if ((t->minute & mask->minute) == 0)
return false;
if ((t->hour & mask->hour) == 0)
return false;
if ((t->dayofmonth & mask->dayofmonth) == 0)
return false;
if ((t->month & mask->month) == 0)
return false;
if ((t->dayofweek & mask->dayofweek) == 0)
return false;
return true;
}