1 /* $OpenBSD: local.h,v 1.12 2005/10/10 17:37:44 espie Exp $ */
2
3 /*-
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Information local to this implementation of stdio,
37 * in particular, macros and private variables.
38 */
39
40 #include <wchar.h>
41 #include "wcio.h"
42 #include "fileext.h"
43
44 /*
45 * Android <= KitKat had getc/putc macros in <stdio.h> that referred
46 * to __srget/__swbuf, so those symbols need to be public for LP32
47 * but can be hidden for LP64.
48 */
49 __LIBC64_HIDDEN__ int __srget(FILE*);
50 __LIBC64_HIDDEN__ int __swbuf(int, FILE*);
51 __LIBC64_HIDDEN__ int __srefill(FILE*);
52
53 /* This was referenced by the apportable middleware for LP32. */
54 __LIBC64_HIDDEN__ int __swsetup(FILE*);
55
56 /* These were referenced by a couple of different pieces of middleware and the Crystax NDK. */
57 __LIBC64_HIDDEN__ extern int __sdidinit;
58 __LIBC64_HIDDEN__ int __sflags(const char*, int*);
59 __LIBC64_HIDDEN__ FILE* __sfp(void);
60 __LIBC64_HIDDEN__ void __sinit(void);
61 __LIBC64_HIDDEN__ void __smakebuf(FILE*);
62
63 /* These are referenced by the Greed for Glory franchise. */
64 __LIBC64_HIDDEN__ int __sflush(FILE *);
65 __LIBC64_HIDDEN__ int __sread(void *, char *, int);
66 __LIBC64_HIDDEN__ int __swrite(void *, const char *, int);
67 __LIBC64_HIDDEN__ fpos_t __sseek(void *, fpos_t, int);
68 __LIBC64_HIDDEN__ int __sclose(void *);
69 __LIBC64_HIDDEN__ int _fwalk(int (*)(FILE *));
70
71 #pragma GCC visibility push(hidden)
72
73 int __sflush_locked(FILE *);
74 void _cleanup(void);
75 int __swhatbuf(FILE *, size_t *, int *);
76 wint_t __fgetwc_unlock(FILE *);
77 wint_t __ungetwc(wint_t, FILE *);
78 int __vfprintf(FILE *, const char *, __va_list);
79 int __svfscanf(FILE * __restrict, const char * __restrict, __va_list);
80 int __vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list);
81 int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list);
82
83 extern void __atexit_register_cleanup(void (*)(void));
84
85 /*
86 * Return true if the given FILE cannot be written now.
87 */
88 #define cantwrite(fp) \
89 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
90 __swsetup(fp))
91
92 /*
93 * Test whether the given stdio file has an active ungetc buffer;
94 * release such a buffer, without restoring ordinary unread data.
95 */
96 #define HASUB(fp) (_UB(fp)._base != NULL)
97 #define FREEUB(fp) { \
98 if (_UB(fp)._base != (fp)->_ubuf) \
99 free(_UB(fp)._base); \
100 _UB(fp)._base = NULL; \
101 }
102
103 /*
104 * test for an fgetln() buffer.
105 */
106 #define HASLB(fp) ((fp)->_lb._base != NULL)
107 #define FREELB(fp) { \
108 free((char *)(fp)->_lb._base); \
109 (fp)->_lb._base = NULL; \
110 }
111
112 #define FLOCKFILE(fp) flockfile(fp)
113 #define FUNLOCKFILE(fp) funlockfile(fp)
114
115 #define FLOATING_POINT
116 #define PRINTF_WIDE_CHAR
117 #define SCANF_WIDE_CHAR
118 #define NO_PRINTF_PERCENT_N
119
120 /* OpenBSD exposes these in <stdio.h>, but we only want them exposed to the implementation. */
121 #define __sfeof(p) (((p)->_flags & __SEOF) != 0)
122 #define __sferror(p) (((p)->_flags & __SERR) != 0)
123 #define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
124 #define __sfileno(p) ((p)->_file)
125 #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
__sputc(int _c,FILE * _p)126 static __inline int __sputc(int _c, FILE* _p) {
127 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) {
128 return (*_p->_p++ = _c);
129 } else {
130 return (__swbuf(_c, _p));
131 }
132 }
133
134 /* OpenBSD declares these in fvwrite.h but we want to ensure they're hidden. */
135 struct __suio;
136 extern int __sfvwrite(FILE *, struct __suio *);
137 wint_t __fputwc_unlock(wchar_t wc, FILE *fp);
138
139 #pragma GCC visibility pop
140