1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 
24 #include <tv.h>
25 #include <tm.h>
26 #include <errno.h>
27 
28 #include "FEATURE/tvlib"
29 
30 int
tvsettime(const Tv_t * tv)31 tvsettime(const Tv_t* tv)
32 {
33 
34 #if _lib_clock_settime && defined(CLOCK_REALTIME)
35 
36 	struct timespec			s;
37 
38 	s.tv_sec = tv->tv_sec;
39 	s.tv_nsec = tv->tv_nsec;
40 	return clock_settime(CLOCK_REALTIME, &s);
41 
42 #else
43 
44 #if defined(tmsettimeofday)
45 
46 	struct timeval			v;
47 
48 	v.tv_sec = tv->tv_sec;
49 	v.tv_usec = tv->tv_nsec / 1000;
50 	return tmsettimeofday(&v);
51 
52 #else
53 
54 #if _lib_stime
55 
56 	static time_t			s;
57 
58 	s = tv->tv_sec + (tv->tv_nsec != 0);
59 	return stime(s);
60 
61 #else
62 
63 	errno = EPERM;
64 	return -1;
65 
66 #endif
67 
68 #endif
69 
70 #endif
71 
72 }
73