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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1994 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "rcv.h"
#undef fopen
#undef fclose
/*
* mailx -- a modified version of a University of California at Berkeley
* mail program
*
* Local version of fopen() and fclose(). These maintain a list of
* file pointers which can be run down when we need to close
* all files, such as before executing external commands.
*/
static NODE *append();
static NODE *del1();
static NODE *getnode();
static NODE *search();
static NODE *
getnode(FILE *fp)
{
NODE *newnode;
if ((newnode = (NODE *)malloc(sizeof(NODE))) == (NODE *)NULL) {
(void) fputs("Cannot allocate node space\n", stderr);
exit(3);
}
newnode->fp = fp;
newnode->next = (NODE *)NULL;
return(newnode);
}
static NODE *
search(FILE *fp)
{
register NODE *tmp;
for (tmp = fplist; tmp != (NODE *)NULL; tmp = tmp->next)
if (tmp->fp == fp)
break;
return( tmp != (NODE *)NULL ? tmp : NOFP);
}
static NODE *
append(FILE *fp)
{
register NODE *newnode;
if ((newnode = getnode(fp)) == (NODE *)NULL)
return(NOFP);
if (fplist == NOFP) {
fplist = newnode;
} else {
newnode->next = curptr->next;
curptr->next = newnode;
}
return(newnode);
}
static NODE *
del1(NODE *oldcur)
{
register NODE *cur, *prev;
for (prev = cur = fplist; cur != (NODE *)NULL; cur = cur->next) {
if (cur == oldcur) {
if (cur == fplist) {
cur = fplist = cur->next;
} else {
prev->next = cur->next;
cur = prev->next ? prev->next : prev;
}
if (curptr == oldcur)
curptr = prev;
free(oldcur);
break;
}
prev = cur;
}
return(cur);
}
FILE *
my_fopen(char *file, char *mode)
{
FILE *fp;
if ((fp = fopen(file, mode)) == (FILE *)NULL) {
fplist = NOFP;
return(fp);
} else {
curptr = append(fp);
}
return(fp);
}
int
my_fclose(register FILE *iop)
{
register NODE *cur;
int ret = fclose(iop);
if (fplist != NOFP) {
cur = search(iop);
cur = del1(cur);
}
return ret;
}
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