mirror of
https://gitlab.isc.org/isc-projects/bind9
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81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <stdbool.h>
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#include <stddef.h> /* NULL */
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#include <stdlib.h> /* NULL */
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#include <syslog.h>
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#include <isc/stdtime.h>
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#include <isc/util.h>
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#include <sys/time.h>
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#ifndef ISC_FIX_TV_USEC
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#define ISC_FIX_TV_USEC 1
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#endif
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#define US_PER_S 1000000
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#if ISC_FIX_TV_USEC
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static inline void
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fix_tv_usec(struct timeval *tv)
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{
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bool fixed = false;
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if (tv->tv_usec < 0) {
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fixed = true;
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do {
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tv->tv_sec -= 1;
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tv->tv_usec += US_PER_S;
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} while (tv->tv_usec < 0);
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} else if (tv->tv_usec >= US_PER_S) {
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fixed = true;
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do {
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tv->tv_sec += 1;
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tv->tv_usec -= US_PER_S;
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} while (tv->tv_usec >= US_PER_S);
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}
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/*
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* Call syslog directly as we are called from the logging functions.
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*/
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if (fixed)
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(void)syslog(LOG_ERR, "gettimeofday returned bad tv_usec: "
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"corrected");
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}
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#endif
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void
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isc_stdtime_get(isc_stdtime_t *t)
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{
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struct timeval tv;
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/*
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* Set 't' to the number of seconds since 00:00:00 UTC, January 1,
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* 1970.
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*/
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REQUIRE(t != NULL);
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RUNTIME_CHECK(gettimeofday(&tv, NULL) != -1);
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#if ISC_FIX_TV_USEC
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fix_tv_usec(&tv);
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INSIST(tv.tv_usec >= 0);
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#else
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INSIST(tv.tv_usec >= 0 && tv.tv_usec < US_PER_S);
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#endif
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*t = (unsigned int)tv.tv_sec;
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}
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