mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
0308077e3a
This patch provides new __adjtime64 explicit 64 bit function for adjusting Linux kernel clock. Internally, the __clock_adjtime64 syscall is used instead of __adjtimex. This patch is necessary for having architectures with __WORDSIZE == 32 Y2038 safe. Moreover, a 32 bit version - __adjtime has been refactored to internally use __adjtime64. The __adjtime is now supposed to be used on systems still supporting 32 bit time (__TIMESIZE != 64) - hence the necessary conversions between struct timeval and 64 bit struct __timeval64. Build tests: ./src/scripts/build-many-glibcs.py glibcs Run-time tests: - Run specific tests on ARM/x86 32bit systems (qemu): https://github.com/lmajewski/meta-y2038 and run tests: https://github.com/lmajewski/y2038-tests/commits/master Above tests were performed with Y2038 redirection applied as well as without to test the proper usage of both __adjtime64 and __adjtime. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/* Time function internal interfaces.
|
|
Copyright (C) 1997-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYS_TIME_H
|
|
# include <time/sys/time.h>
|
|
|
|
# ifndef _ISOMAC
|
|
extern int __gettimeofday (struct timeval *__tv,
|
|
void *__tz);
|
|
extern int __settimezone (const struct timezone *__tz)
|
|
attribute_hidden;
|
|
extern int __adjtime (const struct timeval *__delta,
|
|
struct timeval *__olddelta);
|
|
|
|
# include <struct___timeval64.h>
|
|
# if __TIMESIZE == 64
|
|
# define __adjtime64 __adjtime
|
|
# else
|
|
extern int __adjtime64 (const struct __timeval64 *itv,
|
|
struct __timeval64 *otv);
|
|
libc_hidden_proto (__adjtime64)
|
|
# endif
|
|
extern int __getitimer (enum __itimer_which __which,
|
|
struct itimerval *__value);
|
|
extern int __setitimer (enum __itimer_which __which,
|
|
const struct itimerval *__restrict __new,
|
|
struct itimerval *__restrict __old)
|
|
attribute_hidden;
|
|
extern int __utimes (const char *__file, const struct timeval __tvp[2])
|
|
attribute_hidden;
|
|
extern int __futimes (int fd, const struct timeval tvp[2]) attribute_hidden;
|
|
|
|
# endif
|
|
#endif
|