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/* Copyright (C) 2018-2019 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
<http://www.gnu.org/licenses/>. */
/* Get the current time of day and timezone information,
putting it into *tv and *tz. If tz is null, *tz is not filled.
Returns 0 on success, -1 on errors. */
#ifdef SHARED
# define __gettimeofday __redirect___gettimeofday
# include <sys/time.h>
# undef __gettimeofday
# define HAVE_VSYSCALL
# include <dl-vdso.h>
# include <sysdep-vdso.h>
/* Used as a fallback in the ifunc resolver if VDSO is not available
and for libc.so internal __gettimeofday calls. */
static int
__gettimeofday_vsyscall (struct timeval *tv, struct timezone *tz)
{
return INLINE_VSYSCALL (gettimeofday, 2, tv, tz);
}
/* PREPARE_VERSION_KNOWN will need an __LP64__ ifdef when ILP32 support
goes in. See _libc_vdso_platform_setup in
sysdeps/unix/sysv/linux/aarch64/init-first.c. */
# undef INIT_ARCH
# define INIT_ARCH() \
PREPARE_VERSION_KNOWN (linux_version, LINUX_2_6_39); \
void *vdso_gettimeofday = \
_dl_vdso_vsym ("__kernel_gettimeofday", &linux_version);
libc_ifunc_hidden (__redirect___gettimeofday, __gettimeofday,
vdso_gettimeofday ?: (void *) __gettimeofday_vsyscall)
__hidden_ver1 (__gettimeofday_vsyscall, __GI___gettimeofday,
__gettimeofday_vsyscall);
#else
# include <sys/time.h>
# include <sysdep.h>
int
__gettimeofday (struct timeval *tv, struct timezone *tz)
{
return INLINE_SYSCALL (gettimeofday, 2, tv, tz);
}
libc_hidden_def (__gettimeofday)
#endif
weak_alias (__gettimeofday, gettimeofday)
libc_hidden_weak (gettimeofday)
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