#ifndef lintstatic char	*sccsid = " @(#)close.c	1.2	(ULTRIX)	1/16/86";#endif lint/************************************************************************ *									* *			Copyright (c) 1986 by				* *		Digital Equipment Corporation, Maynard, MA		* *			All rights reserved.				* *									* *   This software is furnished under a license and may be used and	* *   copied  only  in accordance with the terms of such license and	* *   with the  inclusion  of  the  above  copyright  notice.   This	* *   software  or  any  other copies thereof may not be provided or	* *   otherwise made available to any other person.  No title to and	* *   ownership of the software is hereby transferred.			* *									* *   This software is  derived  from  software  received  from  the	* *   University    of   California,   Berkeley,   and   from   Bell	* *   Laboratories.  Use, duplication, or disclosure is  subject  to	* *   restrictions  under  license  agreements  with  University  of	* *   California and with AT&T.						* *									* *   The information in this software is subject to change  without	* *   notice  and should not be construed as a commitment by Digital	* *   Equipment Corporation.						* *									* *   Digital assumes no responsibility for the use  or  reliability	* *   of its software on equipment which is not supplied by Digital.	* *									* ************************************************************************//**************************************************************************			Modification History**	David Metsky		10-Jan-86** 001	Replaced old version with BSD 4.3 version as part of upgrade.**	Based on:	close.c		5.2		7/30/85**************************************************************************//* * f_clos(): f77 file close * t_runc(): truncation * f_exit(): I/O library exit routines */#include "fio.h"static char FROM_OPEN[] =	"\2";static char clse[]	=	"close";f_clos(a) cllist *a;{	unit *b;	int n;	lfname = NULL;	elist = NO;	external = YES;	errflag = a->cerr;	lunit = a->cunit;	if(not_legal(lunit)) return(OK);	if(lunit==STDERR && (!a->csta || *a->csta != FROM_OPEN[0]))		err(errflag,F_ERUNIT,"can't close stderr");	b= &units[lunit];	if(!b->ufd) return(OK);	if(a->csta && *a->csta != FROM_OPEN[0])		switch(lcase(*a->csta))		{	delete:		case 'd':			fclose(b->ufd);			if(b->ufnm) unlink(b->ufnm); /*SYSDEP*/			break;		default:	keep:		case 'k':			if(b->uwrt && (n=t_runc(b,errflag,clse))) return(n);			fclose(b->ufd);			break;		}	else if(b->uscrtch) goto delete;	else goto keep;	if(b->ufnm) free(b->ufnm);	b->ufnm=NULL;	b->ufd=NULL;	return(OK);}f_exit(){	ftnint lu, dofirst = YES;	cllist xx;	xx.cerr=1;	xx.csta=FROM_OPEN;	for(lu=STDOUT; (dofirst || lu!=STDOUT); lu = ++lu % MXUNIT)	{		xx.cunit=lu;		f_clos(&xx);		dofirst = NO;	}}t_runc (b, flag, str)unit	*b;ioflag	flag;char	*str;{	long	loc;	if (b->uwrt)		fflush (b->ufd);	if (b->url || !b->useek || !b->ufnm)		return (OK);	/* don't truncate direct access files, etc. */	loc = ftell (b->ufd);	if (truncate (b->ufnm, loc) != 0)		err (flag, errno, str)	if (b->uwrt && ! nowreading(b))		err (flag, errno, str)	return (OK);}