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 __BEGIN_DECLS
45
46 /*
47 * Android <= KitKat had getc/putc macros in <stdio.h> that referred
48 * to __srget/__swbuf, so those symbols need to be public for LP32
49 * but can be hidden for LP64.
50 */
51 __LIBC64_HIDDEN__ int __srget(FILE*);
52 __LIBC64_HIDDEN__ int __swbuf(int, FILE*);
53 __LIBC64_HIDDEN__ int __srefill(FILE*);
54
55 /* This was referenced by the apportable middleware for LP32. */
56 __LIBC64_HIDDEN__ int __swsetup(FILE*);
57
58 /* These were referenced by a couple of different pieces of middleware and the Crystax NDK. */
59 __LIBC64_HIDDEN__ extern int __sdidinit;
60 __LIBC64_HIDDEN__ int __sflags(const char*, int*);
61 __LIBC64_HIDDEN__ FILE* __sfp(void);
62 __LIBC64_HIDDEN__ void __sinit(void);
63 __LIBC64_HIDDEN__ void __smakebuf(FILE*);
64
65 /* These are referenced by the Greed for Glory franchise. */
66 __LIBC64_HIDDEN__ int __sflush(FILE *);
67 __LIBC64_HIDDEN__ int __sread(void *, char *, int);
68 __LIBC64_HIDDEN__ int __swrite(void *, const char *, int);
69 __LIBC64_HIDDEN__ fpos_t __sseek(void *, fpos_t, int);
70 __LIBC64_HIDDEN__ int __sclose(void *);
71 __LIBC64_HIDDEN__ int _fwalk(int (*)(FILE *));
72
73 #pragma GCC visibility push(hidden)
74
75 int __sflush_locked(FILE *);
76 void _cleanup(void);
77 int __swhatbuf(FILE *, size_t *, int *);
78 wint_t __fgetwc_unlock(FILE *);
79 wint_t __ungetwc(wint_t, FILE *);
80 int __vfprintf(FILE *, const char *, __va_list);
81 int __svfscanf(FILE * __restrict, const char * __restrict, __va_list);
82 int __vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list);
83 int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list);
84
85 extern void __atexit_register_cleanup(void (*)(void));
86
87 /*
88 * Return true if the given FILE cannot be written now.
89 */
90 #define cantwrite(fp) \
91 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
92 __swsetup(fp))
93
94 /*
95 * Test whether the given stdio file has an active ungetc buffer;
96 * release such a buffer, without restoring ordinary unread data.
97 */
98 #define HASUB(fp) (_UB(fp)._base != NULL)
99 #define FREEUB(fp) { \
100 if (_UB(fp)._base != (fp)->_ubuf) \
101 free(_UB(fp)._base); \
102 _UB(fp)._base = NULL; \
103 }
104
105 /*
106 * test for an fgetln() buffer.
107 */
108 #define HASLB(fp) ((fp)->_lb._base != NULL)
109 #define FREELB(fp) { \
110 free((char *)(fp)->_lb._base); \
111 (fp)->_lb._base = NULL; \
112 }
113
114 #define FLOCKFILE(fp) flockfile(fp)
115 #define FUNLOCKFILE(fp) funlockfile(fp)
116
117 #define FLOATING_POINT
118 #define PRINTF_WIDE_CHAR
119 #define SCANF_WIDE_CHAR
120 #define NO_PRINTF_PERCENT_N
121
122 /* OpenBSD exposes these in <stdio.h>, but we only want them exposed to the implementation. */
123 #define __sfeof(p) (((p)->_flags & __SEOF) != 0)
124 #define __sferror(p) (((p)->_flags & __SERR) != 0)
125 #define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
126 #define __sfileno(p) ((p)->_file)
127 #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
__sputc(int _c,FILE * _p)128 static __inline int __sputc(int _c, FILE* _p) {
129 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) {
130 return (*_p->_p++ = _c);
131 } else {
132 return (__swbuf(_c, _p));
133 }
134 }
135
136 /* OpenBSD declares these in fvwrite.h but we want to ensure they're hidden. */
137 struct __suio;
138 extern int __sfvwrite(FILE *, struct __suio *);
139 wint_t __fputwc_unlock(wchar_t wc, FILE *fp);
140
141 #pragma GCC visibility pop
142
143 __END_DECLS
144