1*4887Schin /*********************************************************************** 2*4887Schin * * 3*4887Schin * This software is part of the ast package * 4*4887Schin * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5*4887Schin * and is licensed under the * 6*4887Schin * Common Public License, Version 1.0 * 7*4887Schin * by AT&T Knowledge Ventures * 8*4887Schin * * 9*4887Schin * A copy of the License is available at * 10*4887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 11*4887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12*4887Schin * * 13*4887Schin * Information and Software Systems Research * 14*4887Schin * AT&T Research * 15*4887Schin * Florham Park NJ * 16*4887Schin * * 17*4887Schin * Glenn Fowler <gsf@research.att.com> * 18*4887Schin * David Korn <dgk@research.att.com> * 19*4887Schin * Phong Vo <kpv@research.att.com> * 20*4887Schin * * 21*4887Schin ***********************************************************************/ 22*4887Schin #pragma prototyped 23*4887Schin /* 24*4887Schin * Glenn Fowler 25*4887Schin * AT&T Research 26*4887Schin * 27*4887Schin * touch file access and modify times of file 28*4887Schin * if flags&PATH_TOUCH_CREATE then file will be created if it doesn't exist 29*4887Schin * if flags&PATH_TOUCH_VERBATIM then times are taken verbatim 30*4887Schin * times have one second granularity 31*4887Schin * 32*4887Schin * (time_t)(-1) retain old time 33*4887Schin * 0 use current time 34*4887Schin * 35*4887Schin * the old interface flag values were: 36*4887Schin * 1 PATH_TOUCH_CREATE 37*4887Schin * -1 PATH_TOUCH_CREATE|PATH_TOUCH_VERBATIM 38*4887Schin * PATH_TOUCH_VERBATIM -- not supported 39*4887Schin */ 40*4887Schin 41*4887Schin #include <ast.h> 42*4887Schin #include <times.h> 43*4887Schin #include <tv.h> 44*4887Schin 45*4887Schin int 46*4887Schin touch(const char* path, time_t at, time_t mt, int flags) 47*4887Schin { 48*4887Schin Tv_t av; 49*4887Schin Tv_t mv; 50*4887Schin Tv_t* ap; 51*4887Schin Tv_t* mp; 52*4887Schin 53*4887Schin if (at == (time_t)(-1) && !(flags & PATH_TOUCH_VERBATIM)) 54*4887Schin ap = TV_TOUCH_RETAIN; 55*4887Schin else if (!at && !(flags & PATH_TOUCH_VERBATIM)) 56*4887Schin ap = 0; 57*4887Schin else 58*4887Schin { 59*4887Schin av.tv_sec = at; 60*4887Schin av.tv_nsec = 0; 61*4887Schin ap = &av; 62*4887Schin } 63*4887Schin if (mt == (time_t)(-1) && !(flags & PATH_TOUCH_VERBATIM)) 64*4887Schin mp = TV_TOUCH_RETAIN; 65*4887Schin else if (!mt && !(flags & PATH_TOUCH_VERBATIM)) 66*4887Schin mp = 0; 67*4887Schin else 68*4887Schin { 69*4887Schin mv.tv_sec = mt; 70*4887Schin mv.tv_nsec = 0; 71*4887Schin mp = &mv; 72*4887Schin } 73*4887Schin return tvtouch(path, ap, mp, NiL, flags & 1); 74*4887Schin } 75