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att
GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/tm/tmxtouch.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * Glenn Fowler

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 * AT&T Research

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 *

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 * Time_t conversion support

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 */

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#include <tmx.h>

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#include <tv.h>

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/*

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 * touch path <atime,mtime,ctime>

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 * (flags&PATH_TOUCH_VERBATIM) treats times verbatim, otherwise:

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 * Time_t==0		current time

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 * Time_t==TMX_NOTIME	retains path value

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 */

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int

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tmxtouch(const char* path, Time_t at, Time_t mt, Time_t ct, int flags)

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{

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	Tv_t	av;

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	Tv_t	mv;

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	Tv_t	cv;

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	Tv_t*	ap;

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	Tv_t*	mp;

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	Tv_t*	cp;

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	if (at == TMX_NOTIME && !(flags & PATH_TOUCH_VERBATIM))

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		ap = TV_TOUCH_RETAIN;

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	else if (!at && !(flags & PATH_TOUCH_VERBATIM))

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		ap = 0;

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	else

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	{

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		av.tv_sec = tmxsec(at);

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		av.tv_nsec = tmxnsec(at);

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		ap = &av;

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	}

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	if (mt == TMX_NOTIME && !(flags & PATH_TOUCH_VERBATIM))

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		mp = TV_TOUCH_RETAIN;

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	else if (!mt && !(flags & PATH_TOUCH_VERBATIM))

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		mp = 0;

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	else

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	{

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		mv.tv_sec = tmxsec(mt);

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		mv.tv_nsec = tmxnsec(mt);

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		mp = &mv;

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	}

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	if (ct == TMX_NOTIME && !(flags & PATH_TOUCH_VERBATIM))

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		cp = TV_TOUCH_RETAIN;

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	else if (!ct && !(flags & PATH_TOUCH_VERBATIM))

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		cp = 0;

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	else

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	{

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		cv.tv_sec = tmxsec(ct);

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		cv.tv_nsec = tmxnsec(ct);

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		cp = &cv;

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	}

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	return tvtouch(path, ap, mp, cp, flags & 1);

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}

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