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f1c314d275
This patch provides new instance of Linux specific timespec_get.c file placed in ./sysdeps/unix/sysv/linux/. When compared to this file version from ./time directory, it provides __timespec_get64 explicit 64 bit function for getting 64 bit time in the struct __timespec64 (for compilation using C11 standard). Moreover, a 32 bit version - __timespec_get internally uses __timespec_get64. The __timespec_get is now supposed to be used on systems still supporting 32 bit time (__TIMESIZE != 64) - hence the necessary conversion to 32 bit struct timespec. Internally the timespec_get uses __clock_gettime64. 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 __timespec_get64 and __timespec_get. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* timespec_get -- get 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.
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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 <time.h>
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#include <errno.h>
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/* Set TS to calendar time based in time base BASE. */
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int
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__timespec_get64 (struct __timespec64 *ts, int base)
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{
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if (base == TIME_UTC)
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{
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__clock_gettime64 (CLOCK_REALTIME, ts);
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return base;
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}
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return 0;
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}
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#if __TIMESIZE != 64
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libc_hidden_def (__timespec_get64)
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int
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__timespec_get (struct timespec *ts, int base)
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{
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int ret;
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struct __timespec64 tp64;
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ret = __timespec_get64 (&tp64, base);
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if (ret == TIME_UTC)
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{
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if (! in_time_t_range (tp64.tv_sec))
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{
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__set_errno (EOVERFLOW);
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return 0;
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}
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*ts = valid_timespec64_to_timespec (tp64);
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}
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return ret;
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}
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#endif
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strong_alias (__timespec_get, timespec_get);
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