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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,
* advertising materials, and 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"
static int
_DEFUN(__fwalk, (ptr, function),
struct _reent *ptr _AND
register int (*function) (FILE *))
{
register FILE *fp;
register int n, ret = 0;
register struct _glue *g;
for (g = &ptr->__sglue; g != NULL; g = g->_next)
for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
if (fp->_flags != 0)
{
_flockfile (fp);
if (fp->_flags != 0 && fp->_file != -1)
ret |= (*function) (fp);
_funlockfile (fp);
}
return ret;
}
/* Special version of __fwalk where the function pointer is a reentrant
I/O function (e.g. _fclose_r). */
static int
_DEFUN(__fwalk_reent, (ptr, reent_function),
struct _reent *ptr _AND
register int (*reent_function) (struct _reent *, FILE *))
{
register FILE *fp;
register int n, ret = 0;
register struct _glue *g;
for (g = &ptr->__sglue; g != NULL; g = g->_next)
for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
if (fp->_flags != 0)
{
_flockfile (fp);
if (fp->_flags != 0 && fp->_file != -1)
ret |= (*reent_function) (ptr, fp);
_funlockfile (fp);
}
return ret;
}
int
_DEFUN(_fwalk, (ptr, function),
struct _reent *ptr _AND
register int (*function)(FILE *))
{
register int ret = 0;
__sfp_lock_acquire ();
/* Must traverse given list for streams. Note that _GLOBAL_REENT
only walked once in exit(). */
ret |= __fwalk (ptr, function);
__sfp_lock_release ();
return ret;
}
/* Special version of _fwalk which handles a function pointer to a
reentrant I/O function (e.g. _fclose_r). */
int
_DEFUN(_fwalk_reent, (ptr, reent_function),
struct _reent *ptr _AND
register int (*reent_function) (struct _reent *, FILE *))
{
register int ret = 0;
__sfp_lock_acquire ();
/* Must traverse given list for streams. Note that _GLOBAL_REENT
only walked once in exit(). */
ret |= __fwalk_reent (ptr, reent_function);
__sfp_lock_release ();
return ret;
}
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