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d2e3b697da
This patch provides new __settimeofday64 explicit 64 bit function for setting 64 bit time in the kernel (by internally calling __clock_settime64). Moreover, a 32 bit version - __settimeofday has been refactored to internally use __settimeofday64. The __settimeofday is now supposed to be used on systems still supporting 32 bit time (__TIMESIZE != 64) - hence the necessary conversion of struct timeval to 64 bit struct __timespec64. Internally the settimeofday uses __settimeofday64. This patch is necessary for having architectures with __WORDSIZE == 32 Y2038 safe. 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 proper usage of both __settimeofday64 and __settimeofday. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* settimeofday -- set system time - Linux version supporting 64 bit time.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <time.h>
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#include <sys/time.h>
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/* Set the current time of day and timezone information.
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This call is restricted to the super-user. */
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int
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__settimeofday64 (const struct __timeval64 *tv, const struct timezone *tz)
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{
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if (__glibc_unlikely (tz != 0))
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{
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if (tv != 0)
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{
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__set_errno (EINVAL);
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return -1;
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}
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return __settimezone (tz);
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}
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struct __timespec64 ts = timeval64_to_timespec64 (*tv);
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return __clock_settime64 (CLOCK_REALTIME, &ts);
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}
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#if __TIMESIZE != 64
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libc_hidden_def (__settimeofday64)
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int
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__settimeofday (const struct timeval *tv, const struct timezone *tz)
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{
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struct __timeval64 tv64 = valid_timeval_to_timeval64 (*tv);
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return __settimeofday64 (&tv64, tz);
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}
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#endif
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weak_alias (__settimeofday, settimeofday);
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