1135446Strhodes/* 2193149Sdougb * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 3135446Strhodes * Copyright (C) 1999-2001 Internet Software Consortium. 4135446Strhodes * 5193149Sdougb * Permission to use, copy, modify, and/or distribute this software for any 6135446Strhodes * purpose with or without fee is hereby granted, provided that the above 7135446Strhodes * copyright notice and this permission notice appear in all copies. 8135446Strhodes * 9135446Strhodes * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10135446Strhodes * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11135446Strhodes * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12135446Strhodes * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13135446Strhodes * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14135446Strhodes * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15135446Strhodes * PERFORMANCE OF THIS SOFTWARE. 16135446Strhodes */ 17135446Strhodes 18234010Sdougb/* $Id: stdtime.c,v 1.19 2007/06/19 23:47:18 tbox Exp $ */ 19135446Strhodes 20170222Sdougb/*! \file */ 21170222Sdougb 22135446Strhodes#include <config.h> 23135446Strhodes 24153816Sdougb#include <stddef.h> /* NULL */ 25135446Strhodes#include <stdlib.h> /* NULL */ 26135446Strhodes#include <syslog.h> 27135446Strhodes 28135446Strhodes#include <sys/time.h> 29135446Strhodes 30135446Strhodes#include <isc/stdtime.h> 31135446Strhodes#include <isc/util.h> 32135446Strhodes 33135446Strhodes#ifndef ISC_FIX_TV_USEC 34135446Strhodes#define ISC_FIX_TV_USEC 1 35135446Strhodes#endif 36135446Strhodes 37135446Strhodes#define US_PER_S 1000000 38135446Strhodes 39135446Strhodes#if ISC_FIX_TV_USEC 40135446Strhodesstatic inline void 41135446Strhodesfix_tv_usec(struct timeval *tv) { 42135446Strhodes isc_boolean_t fixed = ISC_FALSE; 43135446Strhodes 44135446Strhodes if (tv->tv_usec < 0) { 45135446Strhodes fixed = ISC_TRUE; 46135446Strhodes do { 47135446Strhodes tv->tv_sec -= 1; 48135446Strhodes tv->tv_usec += US_PER_S; 49135446Strhodes } while (tv->tv_usec < 0); 50135446Strhodes } else if (tv->tv_usec >= US_PER_S) { 51135446Strhodes fixed = ISC_TRUE; 52135446Strhodes do { 53135446Strhodes tv->tv_sec += 1; 54135446Strhodes tv->tv_usec -= US_PER_S; 55135446Strhodes } while (tv->tv_usec >=US_PER_S); 56135446Strhodes } 57135446Strhodes /* 58135446Strhodes * Call syslog directly as we are called from the logging functions. 59135446Strhodes */ 60135446Strhodes if (fixed) 61135446Strhodes (void)syslog(LOG_ERR, "gettimeofday returned bad tv_usec: corrected"); 62135446Strhodes} 63135446Strhodes#endif 64135446Strhodes 65135446Strhodesvoid 66135446Strhodesisc_stdtime_get(isc_stdtime_t *t) { 67135446Strhodes struct timeval tv; 68135446Strhodes 69135446Strhodes /* 70135446Strhodes * Set 't' to the number of seconds since 00:00:00 UTC, January 1, 71135446Strhodes * 1970. 72135446Strhodes */ 73135446Strhodes 74135446Strhodes REQUIRE(t != NULL); 75135446Strhodes 76135446Strhodes RUNTIME_CHECK(gettimeofday(&tv, NULL) != -1); 77135446Strhodes 78135446Strhodes#if ISC_FIX_TV_USEC 79135446Strhodes fix_tv_usec(&tv); 80135446Strhodes INSIST(tv.tv_usec >= 0); 81135446Strhodes#else 82135446Strhodes INSIST(tv.tv_usec >= 0 && tv.tv_usec < US_PER_S); 83135446Strhodes#endif 84135446Strhodes 85135446Strhodes *t = (unsigned int)tv.tv_sec; 86135446Strhodes} 87