1/*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Chris Torek.
7 *
8 * Redistribution and use in source and binary forms, with or without

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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
34 * SUCH DAMAGE.
35 *
36 * @(#)stdio.h 8.5 (Berkeley) 4/29/95
37 * $FreeBSD: head/include/stdio.h 72529 2001-02-16 06:11:22Z imp $
38 */
39
40#ifndef _STDIO_H_
41#define _STDIO_H_
42
43#include <sys/cdefs.h>
44#include <machine/ansi.h>
45

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65/* stdio buffers */
66struct __sbuf {
67 unsigned char *_base;
68 int _size;
69};
70
71struct __file_lock;
72
73/* hold a buncha junk that would grow the ABI */
74struct __sFILEX {
75 struct __file_lock *_mtlock; /* used for MT-safety */
76 unsigned char *_up; /* saved _p when _p is doing ungetc data */
77};
78
79/*
80 * stdio state variables.
81 *
82 * The following always hold:
83 *
84 * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
85 * _lbfsize is -_bf._size, else _lbfsize is 0
86 * if _flags&__SRD, _w is 0

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115 void *_cookie; /* cookie passed to io functions */
116 int (*_close) __P((void *));
117 int (*_read) __P((void *, char *, int));
118 fpos_t (*_seek) __P((void *, fpos_t, int));
119 int (*_write) __P((void *, const char *, int));
120
121 /* separate buffer for long sequences of ungetc() */
122 struct __sbuf _ub; /* ungetc buffer */
123 struct __sFILEX *_extra; /* additions to FILE to not break ABI */
124 int _ur; /* saved _r when _r is counting ungetc data */
125
126 /* tricks to meet minimum requirements even when malloc() fails */
127 unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
128 unsigned char _nbuf[1]; /* guarantee a getc() buffer */
129
130 /* separate buffer for fgetln() when line crosses buffer boundary */
131 struct __sbuf _lb; /* buffer for fgetln() */
132
133 /* Unix stdio files get aligned to block boundaries on fseek() */
134 int _blksize; /* stat.st_blksize (may be != _bf._size) */
135 fpos_t _offset; /* current lseek offset (see WARNING) */
136} FILE;
137
138__BEGIN_DECLS
139extern FILE __sF[];
140__END_DECLS
141
142#define __SLBF 0x0001 /* line buffered */
143#define __SNBF 0x0002 /* unbuffered */
144#define __SRD 0x0004 /* OK to read */
145#define __SWR 0x0008 /* OK to write */
146 /* RD and WR are never simultaneously asserted */
147#define __SRW 0x0010 /* open for reading & writing */

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194#endif
195#ifndef SEEK_CUR
196#define SEEK_CUR 1 /* set file offset to current plus offset */
197#endif
198#ifndef SEEK_END
199#define SEEK_END 2 /* set file offset to EOF plus offset */
200#endif
201
202#define stdin (&__sF[0])
203#define stdout (&__sF[1])
204#define stderr (&__sF[2])
205
206/*
207 * Functions defined in ANSI C standard.
208 */
209__BEGIN_DECLS
210void clearerr __P((FILE *));
211int fclose __P((FILE *));
212int feof __P((FILE *));

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