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/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* and/or other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* No user fns here. Pesch 15apr92. */
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "%W% (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "local.h"
int
_fwalk (struct _reent *ptr,
register int (*function) (FILE *))
{
register FILE *fp;
register int n, ret = 0;
register struct _glue *g;
/*
* It should be safe to walk the list without locking it;
* new nodes are only added to the end and none are ever
* removed.
*
* Avoid locking this list while walking it or else you will
* introduce a potential deadlock in [at least] refill.c.
*/
for (g = &ptr->__sglue; g != NULL; g = g->_next)
for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
if (fp->_flags != 0 && fp->_flags != 1 && fp->_file != -1)
ret |= (*function) (fp);
return ret;
}
/* Special version of __fwalk where the function pointer is a reentrant
I/O function (e.g. _fclose_r). */
int
_fwalk_reent (struct _reent *ptr,
register int (*reent_function) (struct _reent *, FILE *))
{
register FILE *fp;
register int n, ret = 0;
register struct _glue *g;
/*
* It should be safe to walk the list without locking it;
* new nodes are only added to the end and none are ever
* removed.
*
* Avoid locking this list while walking it or else you will
* introduce a potential deadlock in [at least] refill.c.
*/
for (g = &ptr->__sglue; g != NULL; g = g->_next)
for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
if (fp->_flags != 0 && fp->_flags != 1 && fp->_file != -1)
ret |= (*reent_function) (ptr, fp);
return ret;
}
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