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* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* Copyright (C) 2018-2019 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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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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<http://www.gnu.org/licenses/>. */
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/* Get the current time of day and timezone information,
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putting it into *tv and *tz. If tz is null, *tz is not filled.
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Returns 0 on success, -1 on errors. */
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#ifdef SHARED
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# define __gettimeofday __redirect___gettimeofday
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# include <sys/time.h>
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# undef __gettimeofday
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# define HAVE_VSYSCALL
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# include <dl-vdso.h>
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# include <sysdep-vdso.h>
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/* Used as a fallback in the ifunc resolver if VDSO is not available
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and for libc.so internal __gettimeofday calls. */
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static int
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__gettimeofday_vsyscall (struct timeval *tv, struct timezone *tz)
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{
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return INLINE_VSYSCALL (gettimeofday, 2, tv, tz);
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}
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/* PREPARE_VERSION will need an __LP64__ ifdef when ILP32 support
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goes in. See _libc_vdso_platform_setup in
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sysdeps/unix/sysv/linux/aarch64/init-first.c. */
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# undef INIT_ARCH
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# define INIT_ARCH() \
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PREPARE_VERSION (linux_version, "LINUX_2.6.39", 123718537); \
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void *vdso_gettimeofday = \
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_dl_vdso_vsym ("__kernel_gettimeofday", &linux_version);
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libc_ifunc_hidden (__redirect___gettimeofday, __gettimeofday,
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vdso_gettimeofday ?: (void *) __gettimeofday_vsyscall)
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__hidden_ver1 (__gettimeofday_vsyscall, __GI___gettimeofday,
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__gettimeofday_vsyscall);
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#else
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# include <sys/time.h>
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# include <sysdep.h>
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int
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__gettimeofday (struct timeval *tv, struct timezone *tz)
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{
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return INLINE_SYSCALL (gettimeofday, 2, tv, tz);
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}
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libc_hidden_def (__gettimeofday)
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#endif
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weak_alias (__gettimeofday, gettimeofday)
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libc_hidden_weak (gettimeofday)
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