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dd535f4f19
It was raised on libc-help [1] that some Linux kernel interfaces expect
the libc to define __USE_TIME_BITS64 to indicate the time_t size for the
kABI. Different than defined by the initial y2038 design document [2],
the __USE_TIME_BITS64 is only defined for ABIs that support more than
one time_t size (by defining the _TIME_BITS for each module).
The 64 bit time_t redirects are now enabled using a different internal
define (__USE_TIME64_REDIRECTS). There is no expected change in semantic
or code generation.
Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and
arm-linux-gnueabi
[1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html
[2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit a4ed0471d7)
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/* Copyright (C) 1991-2024 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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/*
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* POSIX Standard: 5.6.6 Set File Access and Modification Times <utime.h>
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*/
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#ifndef _UTIME_H
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#define _UTIME_H 1
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#include <features.h>
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__BEGIN_DECLS
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#include <bits/types.h>
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#if defined __USE_XOPEN || defined __USE_XOPEN2K
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# include <bits/types/time_t.h>
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#endif
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/* Structure describing file times. */
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struct utimbuf
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{
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#ifdef __USE_TIME64_REDIRECTS
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__time64_t actime; /* Access time. */
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__time64_t modtime; /* Modification time. */
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#else
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__time_t actime; /* Access time. */
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__time_t modtime; /* Modification time. */
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#endif
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};
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/* Set the access and modification times of FILE to those given in
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*FILE_TIMES. If FILE_TIMES is NULL, set them to the current time. */
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#ifndef __USE_TIME64_REDIRECTS
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extern int utime (const char *__file,
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const struct utimbuf *__file_times)
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__THROW __nonnull ((1));
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#else
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# ifdef __REDIRECT_NTH
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extern int __REDIRECT_NTH (utime, (const char *__file,
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const struct utimbuf *__file_times),
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__utime64);
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# else
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# define utime __utime64
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# endif
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#endif
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__END_DECLS
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#endif /* utime.h */
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