tvsettime.c revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
2N/A/***********************************************************************
2N/A* *
2N/A* This software is part of the ast package *
2N/A* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
2N/A* and is licensed under the *
2N/A* Common Public License, Version 1.0 *
2N/A* by AT&T Knowledge Ventures *
2N/A* *
2N/A* A copy of the License is available at *
2N/A* http://www.opensource.org/licenses/cpl1.0.txt *
2N/A* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
2N/A* *
2N/A* Information and Software Systems Research *
2N/A* AT&T Research *
2N/A* Florham Park NJ *
2N/A* *
2N/A* Glenn Fowler <gsf@research.att.com> *
2N/A* David Korn <dgk@research.att.com> *
2N/A* Phong Vo <kpv@research.att.com> *
2N/A* *
2N/A***********************************************************************/
2N/A#pragma prototyped
2N/A
2N/A#include <tv.h>
2N/A#include <tm.h>
2N/A#include <errno.h>
2N/A
2N/A#include "FEATURE/tvlib"
2N/A
2N/Aint
2N/Atvsettime(const Tv_t* tv)
2N/A{
2N/A
2N/A#if _lib_clock_settime && defined(CLOCK_REALTIME)
2N/A
2N/A struct timespec s;
2N/A
2N/A s.tv_sec = tv->tv_sec;
2N/A s.tv_nsec = tv->tv_nsec;
2N/A return clock_settime(CLOCK_REALTIME, &s);
2N/A
2N/A#else
2N/A
2N/A#if defined(tmsettimeofday)
2N/A
2N/A struct timeval v;
2N/A
2N/A v.tv_sec = tv->tv_sec;
2N/A v.tv_usec = tv->tv_nsec / 1000;
2N/A return tmsettimeofday(&v);
2N/A
2N/A#else
2N/A
2N/A#if _lib_stime
2N/A
2N/A static time_t s;
2N/A
2N/A s = tv->tv_sec + (tv->tv_nsec != 0);
2N/A return stime(s);
2N/A
2N/A#else
2N/A
2N/A errno = EPERM;
2N/A return -1;
2N/A
2N/A#endif
2N/A
2N/A#endif
2N/A
2N/A#endif
2N/A
2N/A}
2N/A