14887Schin /***********************************************************************
24887Schin * *
34887Schin * This software is part of the ast package *
4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property *
54887Schin * and is licensed under the *
64887Schin * Common Public License, Version 1.0 *
78462SApril.Chin@Sun.COM * by AT&T Intellectual Property *
84887Schin * *
94887Schin * A copy of the License is available at *
104887Schin * http://www.opensource.org/licenses/cpl1.0.txt *
114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
124887Schin * *
134887Schin * Information and Software Systems Research *
144887Schin * AT&T Research *
154887Schin * Florham Park NJ *
164887Schin * *
174887Schin * Glenn Fowler <gsf@research.att.com> *
184887Schin * David Korn <dgk@research.att.com> *
194887Schin * Phong Vo <kpv@research.att.com> *
204887Schin * *
214887Schin ***********************************************************************/
224887Schin #pragma prototyped
234887Schin /*
244887Schin * Glenn Fowler
254887Schin * AT&T Research
264887Schin *
274887Schin * touch file access and modify times of file
284887Schin * if flags&PATH_TOUCH_CREATE then file will be created if it doesn't exist
294887Schin * if flags&PATH_TOUCH_VERBATIM then times are taken verbatim
304887Schin * times have one second granularity
314887Schin *
324887Schin * (time_t)(-1) retain old time
334887Schin * 0 use current time
344887Schin *
354887Schin * the old interface flag values were:
364887Schin * 1 PATH_TOUCH_CREATE
374887Schin * -1 PATH_TOUCH_CREATE|PATH_TOUCH_VERBATIM
384887Schin * PATH_TOUCH_VERBATIM -- not supported
394887Schin */
404887Schin
414887Schin #include <ast.h>
424887Schin #include <times.h>
434887Schin #include <tv.h>
444887Schin
454887Schin int
touch(const char * path,time_t at,time_t mt,int flags)464887Schin touch(const char* path, time_t at, time_t mt, int flags)
474887Schin {
484887Schin Tv_t av;
494887Schin Tv_t mv;
504887Schin Tv_t* ap;
514887Schin Tv_t* mp;
524887Schin
534887Schin if (at == (time_t)(-1) && !(flags & PATH_TOUCH_VERBATIM))
544887Schin ap = TV_TOUCH_RETAIN;
554887Schin else if (!at && !(flags & PATH_TOUCH_VERBATIM))
564887Schin ap = 0;
574887Schin else
584887Schin {
594887Schin av.tv_sec = at;
604887Schin av.tv_nsec = 0;
614887Schin ap = &av;
624887Schin }
634887Schin if (mt == (time_t)(-1) && !(flags & PATH_TOUCH_VERBATIM))
644887Schin mp = TV_TOUCH_RETAIN;
654887Schin else if (!mt && !(flags & PATH_TOUCH_VERBATIM))
664887Schin mp = 0;
674887Schin else
684887Schin {
694887Schin mv.tv_sec = mt;
704887Schin mv.tv_nsec = 0;
714887Schin mp = &mv;
724887Schin }
734887Schin return tvtouch(path, ap, mp, NiL, flags & 1);
744887Schin }
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