2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)local.h 8.3 (Berkeley) 7/3/94
38 * $FreeBSD: src/lib/libc/stdio/local.h,v 1.1.1.2.6.1 2001/03/05 11:27:49 obrien Exp $
39 * $DragonFly: src/lib/libc/stdio/local.h,v 1.6 2005/05/09 12:43:40 davidxu Exp $
42 #include <sys/types.h> /* for off_t */
45 #ifndef _MACHINE_STDINT_H_
46 #include <machine/stdint.h> /* __size_t */
50 * Information local to this implementation of stdio,
51 * in particular, macros and private variables.
54 extern int __sflush (FILE *);
55 extern FILE *__sfp (void);
56 extern int __srefill (FILE *);
57 extern int __sread (void *, char *, int);
58 extern int __swrite (void *, char const *, int);
59 extern fpos_t __sseek (void *, fpos_t, int);
60 extern int __sclose (void *);
61 extern void __sinit (void);
62 extern void _cleanup (void);
63 extern void (*__cleanup) (void);
64 extern void __smakebuf (FILE *);
65 extern int __swhatbuf (FILE *, __size_t *, int *);
66 extern int _fwalk (int (*)(FILE *));
67 extern int __swsetup (FILE *);
68 extern int __sflags (const char *, int *);
69 extern int __vfprintf(FILE *, const char *, __va_list);
71 extern int __sdidinit;
73 /* hold a buncha junk that would grow the ABI */
75 unsigned char *_up; /* saved _p when _p is doing ungetc data */
76 pthread_mutex_t fl_mutex; /* used for MT-safety */
77 pthread_t fl_owner; /* current owner */
78 int fl_count; /* recursive lock count */
82 * Return true iff the given FILE cannot be written now.
84 #define cantwrite(fp) \
85 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
89 * Test whether the given stdio file has an active ungetc buffer;
90 * release such a buffer, without restoring ordinary unread data.
92 #define HASUB(fp) ((fp)->_ub._base != NULL)
93 #define FREEUB(fp) { \
94 if ((fp)->_ub._base != (fp)->_ubuf) \
95 free((char *)(fp)->_ub._base); \
96 (fp)->_ub._base = NULL; \
100 * test for an fgetln() buffer.
102 #define HASLB(fp) ((fp)->_lb._base != NULL)
103 #define FREELB(fp) { \
104 free((char *)(fp)->_lb._base); \
105 (fp)->_lb._base = NULL; \
108 #define INITEXTRA(fp) { \
109 (fp)->_extra->_up = NULL; \
110 (fp)->_extra->fl_mutex = PTHREAD_MUTEX_INITIALIZER; \
111 (fp)->_extra->fl_owner = NULL; \
112 (fp)->_extra->fl_count = 0; \