usr/src/ucblib/libucb/port/sys/gettimeofday.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 /*LINTLIBRARY*/
  34
  35 #include <sys/types.h>
  36 #include <sys/time.h>
  37 #include <stdio.h>
  38 #include <unistd.h>
  39 #include <errno.h>
  40 #include <sys/syscall.h>
  41 #include "libc.h"
  42
  43 /*
  44  * Get the time of day information.
  45  * BSD compatibility on top of SVr4 facilities:
  46  * u_sec always zero, and don't do anything with timezone pointer.
  47  */
  48
  49 /*
  50  * This is defined in sys/gettimeofday.s
  51  * This extern cannot be in libc.h due to name conflict with port/gen/synonyms.h
  52  */
  53 extern int _gettimeofday(struct timeval *);
  54
  55 /*ARGSUSED*/
  56 int
  57 gettimeofday(struct timeval *tp, void *tzp)
  58 {
  59         if (tp == NULL)
  60                 return (0);
  61
  62         return (_gettimeofday(tp));
  63 }
  64
  65 /*
  66  * Set the time.
  67  * Don't do anything with the timezone information.
  68  */
  69
  70 /*ARGSUSED*/
  71 int
  72 settimeofday(struct timeval *tp, void *tzp)
  73 {
  74         time_t t;               /* time in seconds */
  75
  76         if (tp == NULL)
  77                 return (0);
  78
  79         t = (time_t) tp->tv_sec;
  80         if (tp->tv_usec >= 500000)
  81                 /* round up */
  82                 t++;
  83
  84         return (stime(&t));
  85 }