mes/lib/m2/time.c
Jan (janneke) Nieuwenhuizen 1e14c26305
lib/m2: time: Fix segfault by allocating timeval struct.
Suggested by Meghan Denny <hello@nektro.net>.

* lib/m2/time.c (__tv): New global variable.
(time): Use it to allocate timeval struct.
2023-01-24 07:59:49 +01:00

41 lines
1.2 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2018,2019,2022,2023 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes 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.
*
* GNU Mes 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/syscall.h>
#include <arch/syscall.h>
#include <time.h>
char *__tv;
long
time (long* result)
{
int r;
if (__tv == 0)
__tv = malloc (sizeof (struct timeval));
struct timeval *tv = __tv;
r = _sys_call2 (SYS_gettimeofday, tv, 0);
if (r != 0)
return -1;
if (result != 0)
result[0] = tv->tv_sec;
return tv->tv_sec;
}