gettimeofday.c revision 237434
1237434Skib/*- 2237434Skib * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org> 3237434Skib * 4237434Skib * Redistribution and use in source and binary forms, with or without 5237434Skib * modification, are permitted provided that the following conditions 6237434Skib * are met: 7237434Skib * 1. Redistributions of source code must retain the above copyright 8237434Skib * notice, this list of conditions and the following disclaimer. 9237434Skib * 2. Redistributions in binary form must reproduce the above copyright 10237434Skib * notice, this list of conditions and the following disclaimer in the 11237434Skib * documentation and/or other materials provided with the distribution. 12237434Skib * 13237434Skib * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14237434Skib * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15237434Skib * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16237434Skib * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17237434Skib * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18237434Skib * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19237434Skib * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20237434Skib * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21237434Skib * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22237434Skib * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23237434Skib * SUCH DAMAGE. 24237434Skib */ 25237434Skib 26237434Skib#include <sys/cdefs.h> 27237434Skib__FBSDID("$FreeBSD: head/lib/libc/sys/gettimeofday.c 237434 2012-06-22 07:13:30Z kib $"); 28237434Skib 29237434Skib#include <sys/syscall.h> 30237434Skib#include <sys/time.h> 31237434Skib#include <sys/vdso.h> 32237434Skib#include <errno.h> 33237434Skib#include "libc_private.h" 34237434Skib 35237434Skibint __gettimeofday(struct timeval *tv, struct timezone *tz); 36237434Skib 37237434Skib__weak_reference(__gettimeofday, gettimeofday); 38237434Skib 39237434Skibint 40237434Skib__gettimeofday(struct timeval *tv, struct timezone *tz) 41237434Skib{ 42237434Skib int error; 43237434Skib 44237434Skib if (__vdso_gettimeofday != NULL && __vdso_gettc != NULL) 45237434Skib error = __vdso_gettimeofday(tv, tz); 46237434Skib else 47237434Skib error = ENOSYS; 48237434Skib if (error == ENOSYS) 49237434Skib error = __sys_gettimeofday(tv, tz); 50237434Skib return (error); 51237434Skib} 52