2 * Copyright (c) 1990 The Regents of the University of California.
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
17 /* No user fns here. Pesch 15apr92. */
19 #if defined(LIBC_SCCS) && !defined(lint)
20 static char sccsid[] = "%W% (Berkeley) %G%";
21 #endif /* LIBC_SCCS and not lint */
31 _DEFUN(__fwalk, (ptr, function),
32 struct _reent *ptr _AND
33 register int (*function) (FILE *))
36 register int n, ret = 0;
37 register struct _glue *g;
39 for (g = &ptr->__sglue; g != NULL; g = g->_next)
40 for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
44 if (fp->_flags != 0 && fp->_file != -1)
45 ret |= (*function) (fp);
52 /* Special version of __fwalk where the function pointer is a reentrant
53 I/O function (e.g. _fclose_r). */
55 _DEFUN(__fwalk_reent, (ptr, reent_function),
56 struct _reent *ptr _AND
57 register int (*reent_function) (struct _reent *, FILE *))
60 register int n, ret = 0;
61 register struct _glue *g;
63 for (g = &ptr->__sglue; g != NULL; g = g->_next)
64 for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
68 if (fp->_flags != 0 && fp->_file != -1)
69 ret |= (*reent_function) (ptr, fp);
77 _DEFUN(_fwalk, (ptr, function),
78 struct _reent *ptr _AND
79 register int (*function)(FILE *))
83 __sfp_lock_acquire ();
85 /* Must traverse given list for streams. Note that _GLOBAL_REENT
86 only walked once in exit(). */
87 ret |= __fwalk (ptr, function);
89 __sfp_lock_release ();
94 /* Special version of _fwalk which handles a function pointer to a
95 reentrant I/O function (e.g. _fclose_r). */
97 _DEFUN(_fwalk_reent, (ptr, reent_function),
98 struct _reent *ptr _AND
99 register int (*reent_function) (struct _reent *, FILE *))
101 register int ret = 0;
103 __sfp_lock_acquire ();
105 /* Must traverse given list for streams. Note that _GLOBAL_REENT
106 only walked once in exit(). */
107 ret |= __fwalk_reent (ptr, reent_function);
109 __sfp_lock_release ();