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stdio.h (72472) stdio.h (72529)
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
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
23 *
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
34 * SUCH DAMAGE.
35 *
36 * @(#)stdio.h 8.5 (Berkeley) 4/29/95
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
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
23 *
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
34 * SUCH DAMAGE.
35 *
36 * @(#)stdio.h 8.5 (Berkeley) 4/29/95
37 * $FreeBSD: head/include/stdio.h 72472 2001-02-14 05:00:20Z peter $
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
46#ifdef _BSD_SIZE_T_
47typedef _BSD_SIZE_T_ size_t;
48#undef _BSD_SIZE_T_
49#endif
50
51#ifndef NULL
52#define NULL 0
53#endif
54
55typedef _BSD_OFF_T_ fpos_t;
56
57#define _FSTDIO /* Define for new stdio with functions. */
58
59/*
60 * NB: to fit things in six character monocase externals, the stdio
61 * code uses the prefix `__s' for stdio objects, typically followed
62 * by a three-character attempt at a mnemonic.
63 */
64
65/* stdio buffers */
66struct __sbuf {
67 unsigned char *_base;
68 int _size;
69};
70
71struct __file_lock;
72
38 */
39
40#ifndef _STDIO_H_
41#define _STDIO_H_
42
43#include <sys/cdefs.h>
44#include <machine/ansi.h>
45
46#ifdef _BSD_SIZE_T_
47typedef _BSD_SIZE_T_ size_t;
48#undef _BSD_SIZE_T_
49#endif
50
51#ifndef NULL
52#define NULL 0
53#endif
54
55typedef _BSD_OFF_T_ fpos_t;
56
57#define _FSTDIO /* Define for new stdio with functions. */
58
59/*
60 * NB: to fit things in six character monocase externals, the stdio
61 * code uses the prefix `__s' for stdio objects, typically followed
62 * by a three-character attempt at a mnemonic.
63 */
64
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
73/*
74 * stdio state variables.
75 *
76 * The following always hold:
77 *
78 * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
79 * _lbfsize is -_bf._size, else _lbfsize is 0
80 * if _flags&__SRD, _w is 0
81 * if _flags&__SWR, _r is 0
82 *
83 * This ensures that the getc and putc macros (or inline functions) never
84 * try to write or read from a file that is in `read' or `write' mode.
85 * (Moreover, they can, and do, automatically switch from read mode to
86 * write mode, and back, on "r+" and "w+" files.)
87 *
88 * _lbfsize is used only to make the inline line-buffered output stream
89 * code as compact as possible.
90 *
91 * _ub, _up, and _ur are used when ungetc() pushes back more characters
92 * than fit in the current _bf, or when ungetc() pushes back a character
93 * that does not match the previous one in _bf. When this happens,
94 * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
95 * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
96 *
97 * NB: see WARNING above before changing the layout of this structure!
98 */
99typedef struct __sFILE {
100 unsigned char *_p; /* current position in (some) buffer */
101 int _r; /* read space left for getc() */
102 int _w; /* write space left for putc() */
103 short _flags; /* flags, below; this FILE is free if 0 */
104 short _file; /* fileno, if Unix descriptor, else -1 */
105 struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
106 int _lbfsize; /* 0 or -_bf._size, for inline putc */
107
108 /* operations */
109 void *_cookie; /* cookie passed to io functions */
110 int (*_close) __P((void *));
111 int (*_read) __P((void *, char *, int));
112 fpos_t (*_seek) __P((void *, fpos_t, int));
113 int (*_write) __P((void *, const char *, int));
114
115 /* separate buffer for long sequences of ungetc() */
116 struct __sbuf _ub; /* ungetc buffer */
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
87 * if _flags&__SWR, _r is 0
88 *
89 * This ensures that the getc and putc macros (or inline functions) never
90 * try to write or read from a file that is in `read' or `write' mode.
91 * (Moreover, they can, and do, automatically switch from read mode to
92 * write mode, and back, on "r+" and "w+" files.)
93 *
94 * _lbfsize is used only to make the inline line-buffered output stream
95 * code as compact as possible.
96 *
97 * _ub, _up, and _ur are used when ungetc() pushes back more characters
98 * than fit in the current _bf, or when ungetc() pushes back a character
99 * that does not match the previous one in _bf. When this happens,
100 * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
101 * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
102 *
103 * NB: see WARNING above before changing the layout of this structure!
104 */
105typedef struct __sFILE {
106 unsigned char *_p; /* current position in (some) buffer */
107 int _r; /* read space left for getc() */
108 int _w; /* write space left for putc() */
109 short _flags; /* flags, below; this FILE is free if 0 */
110 short _file; /* fileno, if Unix descriptor, else -1 */
111 struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
112 int _lbfsize; /* 0 or -_bf._size, for inline putc */
113
114 /* operations */
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 */
117 unsigned char *_up; /* saved _p when _p is doing ungetc data */
123 struct __sFILEX *_extra; /* additions to FILE to not break ABI */
118 int _ur; /* saved _r when _r is counting ungetc data */
119
120 /* tricks to meet minimum requirements even when malloc() fails */
121 unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
122 unsigned char _nbuf[1]; /* guarantee a getc() buffer */
123
124 /* separate buffer for fgetln() when line crosses buffer boundary */
125 struct __sbuf _lb; /* buffer for fgetln() */
126
127 /* Unix stdio files get aligned to block boundaries on fseek() */
128 int _blksize; /* stat.st_blksize (may be != _bf._size) */
129 fpos_t _offset; /* current lseek offset (see WARNING) */
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) */
130 struct __file_lock *_lock; /* used for MT-safety */
131} FILE;
132
133__BEGIN_DECLS
136} FILE;
137
138__BEGIN_DECLS
134extern FILE __stdin;
135extern FILE __stdout;
136extern FILE __stderr;
139extern FILE __sF[];
137__END_DECLS
138
139#define __SLBF 0x0001 /* line buffered */
140#define __SNBF 0x0002 /* unbuffered */
141#define __SRD 0x0004 /* OK to read */
142#define __SWR 0x0008 /* OK to write */
143 /* RD and WR are never simultaneously asserted */
144#define __SRW 0x0010 /* open for reading & writing */
145#define __SEOF 0x0020 /* found EOF */
146#define __SERR 0x0040 /* found error */
147#define __SMBF 0x0080 /* _buf is from malloc */
148#define __SAPP 0x0100 /* fdopen()ed in append mode */
149#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
150#define __SOPT 0x0400 /* do fseek() optimization */
151#define __SNPT 0x0800 /* do not do fseek() optimization */
152#define __SOFF 0x1000 /* set iff _offset is in fact correct */
153#define __SMOD 0x2000 /* true => fgetln modified _p text */
154#define __SALC 0x4000 /* allocate string space dynamically */
155#define __SIGN 0x8000 /* ignore this file in _fwalk */
156
157/*
158 * The following three definitions are for ANSI C, which took them
159 * from System V, which brilliantly took internal interface macros and
160 * made them official arguments to setvbuf(), without renaming them.
161 * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
162 *
163 * Although numbered as their counterparts above, the implementation
164 * does not rely on this.
165 */
166#define _IOFBF 0 /* setvbuf should set fully buffered */
167#define _IOLBF 1 /* setvbuf should set line buffered */
168#define _IONBF 2 /* setvbuf should set unbuffered */
169
170#define BUFSIZ 1024 /* size of buffer used by setbuf */
171#define EOF (-1)
172
173/*
174 * FOPEN_MAX is a minimum maximum, and is the number of streams that
175 * stdio can provide without attempting to allocate further resources
176 * (which could fail). Do not use this for anything.
177 */
178 /* must be == _POSIX_STREAM_MAX <limits.h> */
179#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
180#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
181
182/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
183#ifndef _ANSI_SOURCE
184#define P_tmpdir "/var/tmp/"
185#endif
186#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
187#define TMP_MAX 308915776
188
189#ifndef SEEK_SET
190#define SEEK_SET 0 /* set file offset to offset */
191#endif
192#ifndef SEEK_CUR
193#define SEEK_CUR 1 /* set file offset to current plus offset */
194#endif
195#ifndef SEEK_END
196#define SEEK_END 2 /* set file offset to EOF plus offset */
197#endif
198
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 */
148#define __SEOF 0x0020 /* found EOF */
149#define __SERR 0x0040 /* found error */
150#define __SMBF 0x0080 /* _buf is from malloc */
151#define __SAPP 0x0100 /* fdopen()ed in append mode */
152#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
153#define __SOPT 0x0400 /* do fseek() optimization */
154#define __SNPT 0x0800 /* do not do fseek() optimization */
155#define __SOFF 0x1000 /* set iff _offset is in fact correct */
156#define __SMOD 0x2000 /* true => fgetln modified _p text */
157#define __SALC 0x4000 /* allocate string space dynamically */
158#define __SIGN 0x8000 /* ignore this file in _fwalk */
159
160/*
161 * The following three definitions are for ANSI C, which took them
162 * from System V, which brilliantly took internal interface macros and
163 * made them official arguments to setvbuf(), without renaming them.
164 * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
165 *
166 * Although numbered as their counterparts above, the implementation
167 * does not rely on this.
168 */
169#define _IOFBF 0 /* setvbuf should set fully buffered */
170#define _IOLBF 1 /* setvbuf should set line buffered */
171#define _IONBF 2 /* setvbuf should set unbuffered */
172
173#define BUFSIZ 1024 /* size of buffer used by setbuf */
174#define EOF (-1)
175
176/*
177 * FOPEN_MAX is a minimum maximum, and is the number of streams that
178 * stdio can provide without attempting to allocate further resources
179 * (which could fail). Do not use this for anything.
180 */
181 /* must be == _POSIX_STREAM_MAX <limits.h> */
182#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
183#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
184
185/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
186#ifndef _ANSI_SOURCE
187#define P_tmpdir "/var/tmp/"
188#endif
189#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
190#define TMP_MAX 308915776
191
192#ifndef SEEK_SET
193#define SEEK_SET 0 /* set file offset to offset */
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
199#define stdin (&__stdin)
200#define stdout (&__stdout)
201#define stderr (&__stderr)
202#define stdin (&__sF[0])
203#define stdout (&__sF[1])
204#define stderr (&__sF[2])
202
203/*
204 * Functions defined in ANSI C standard.
205 */
206__BEGIN_DECLS
207void clearerr __P((FILE *));
208int fclose __P((FILE *));
209int feof __P((FILE *));
210int ferror __P((FILE *));
211int fflush __P((FILE *));
212int fgetc __P((FILE *));
213int fgetpos __P((FILE *, fpos_t *));
214char *fgets __P((char *, int, FILE *));
215FILE *fopen __P((const char *, const char *));
216int fprintf __P((FILE *, const char *, ...));
217int fputc __P((int, FILE *));
218int fputs __P((const char *, FILE *));
219size_t fread __P((void *, size_t, size_t, FILE *));
220FILE *freopen __P((const char *, const char *, FILE *));
221int fscanf __P((FILE *, const char *, ...));
222int fseek __P((FILE *, long, int));
223int fsetpos __P((FILE *, const fpos_t *));
224long ftell __P((FILE *));
225size_t fwrite __P((const void *, size_t, size_t, FILE *));
226int getc __P((FILE *));
227int getchar __P((void));
228char *gets __P((char *));
229#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
230extern __const int sys_nerr; /* perror(3) external variables */
231extern __const char *__const sys_errlist[];
232#endif
233void perror __P((const char *));
234int printf __P((const char *, ...));
235int putc __P((int, FILE *));
236int putchar __P((int));
237int puts __P((const char *));
238int remove __P((const char *));
239int rename __P((const char *, const char *));
240void rewind __P((FILE *));
241int scanf __P((const char *, ...));
242void setbuf __P((FILE *, char *));
243int setvbuf __P((FILE *, char *, int, size_t));
244int sprintf __P((char *, const char *, ...));
245int sscanf __P((const char *, const char *, ...));
246FILE *tmpfile __P((void));
247char *tmpnam __P((char *));
248int ungetc __P((int, FILE *));
249int vfprintf __P((FILE *, const char *, _BSD_VA_LIST_));
250int vprintf __P((const char *, _BSD_VA_LIST_));
251int vsprintf __P((char *, const char *, _BSD_VA_LIST_));
252__END_DECLS
253
254/*
255 * Functions defined in POSIX 1003.1.
256 */
257#ifndef _ANSI_SOURCE
258/* size for cuserid(3); UT_NAMESIZE + 1, see <utmp.h> */
259#define L_cuserid 17
260
261#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */
262
263__BEGIN_DECLS
264char *ctermid __P((char *));
265FILE *fdopen __P((int, const char *));
266int fileno __P((FILE *));
267int ftrylockfile __P((FILE *));
268void flockfile __P((FILE *));
269void funlockfile __P((FILE *));
270__END_DECLS
271#endif /* not ANSI */
272
273/*
274 * Portability hacks. See <sys/types.h>.
275 */
276#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
277__BEGIN_DECLS
278#ifndef _FTRUNCATE_DECLARED
279#define _FTRUNCATE_DECLARED
280int ftruncate __P((int, _BSD_OFF_T_));
281#endif
282#ifndef _LSEEK_DECLARED
283#define _LSEEK_DECLARED
284_BSD_OFF_T_ lseek __P((int, _BSD_OFF_T_, int));
285#endif
286#ifndef _MMAP_DECLARED
287#define _MMAP_DECLARED
288void *mmap __P((void *, size_t, int, int, int, _BSD_OFF_T_));
289#endif
290#ifndef _TRUNCATE_DECLARED
291#define _TRUNCATE_DECLARED
292int truncate __P((const char *, _BSD_OFF_T_));
293#endif
294__END_DECLS
295#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
296
297/*
298 * Routines that are purely local.
299 */
300#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
301__BEGIN_DECLS
302int asprintf __P((char **, const char *, ...)) __printflike(2, 3);
303char *ctermid_r __P((char *));
304char *fgetln __P((FILE *, size_t *));
305int fpurge __P((FILE *));
306int fseeko __P((FILE *, _BSD_OFF_T_, int));
307_BSD_OFF_T_ ftello __P((FILE *));
308int getw __P((FILE *));
309int pclose __P((FILE *));
310FILE *popen __P((const char *, const char *));
311int putw __P((int, FILE *));
312void setbuffer __P((FILE *, char *, int));
313int setlinebuf __P((FILE *));
314char *tempnam __P((const char *, const char *));
315int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
316int vasprintf __P((char **, const char *, _BSD_VA_LIST_))
317 __printflike(2, 0);
318int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_))
319 __printflike(3, 0);
320int vscanf __P((const char *, _BSD_VA_LIST_)) __scanflike(1, 0);
321int vsscanf __P((const char *, const char *, _BSD_VA_LIST_))
322 __scanflike(2, 0);
323__END_DECLS
324
325/*
326 * This is a #define because the function is used internally and
327 * (unlike vfscanf) the name __vfscanf is guaranteed not to collide
328 * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
329 */
330#define vfscanf __vfscanf
331
332/*
333 * Stdio function-access interface.
334 */
335__BEGIN_DECLS
336FILE *funopen __P((const void *,
337 int (*)(void *, char *, int),
338 int (*)(void *, const char *, int),
339 fpos_t (*)(void *, fpos_t, int),
340 int (*)(void *)));
341__END_DECLS
342#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
343#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
344#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
345
346/*
347 * Functions internal to the implementation.
348 */
349__BEGIN_DECLS
350int __srget __P((FILE *));
351int __vfscanf __P((FILE *, const char *, _BSD_VA_LIST_));
352int __svfscanf __P((FILE *, const char *, _BSD_VA_LIST_));
353int __swbuf __P((int, FILE *));
354__END_DECLS
355
356/*
357 * The __sfoo macros are here so that we can
358 * define function versions in the C library.
359 */
360#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
361#if defined(__GNUC__) && defined(__STDC__)
362static __inline int __sputc(int _c, FILE *_p) {
363 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
364 return (*_p->_p++ = _c);
365 else
366 return (__swbuf(_c, _p));
367}
368#else
369/*
370 * This has been tuned to generate reasonable code on the vax using pcc.
371 */
372#define __sputc(c, p) \
373 (--(p)->_w < 0 ? \
374 (p)->_w >= (p)->_lbfsize ? \
375 (*(p)->_p = (c)), *(p)->_p != '\n' ? \
376 (int)*(p)->_p++ : \
377 __swbuf('\n', p) : \
378 __swbuf((int)(c), p) : \
379 (*(p)->_p = (c), (int)*(p)->_p++))
380#endif
381
382#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
383#define __sferror(p) (((p)->_flags & __SERR) != 0)
384#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
385#define __sfileno(p) ((p)->_file)
386
387/*
388 * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
389 * B.8.2.7 for the rationale behind the *_unlocked() macros.
390 */
391#define feof_unlocked(p) __sfeof(p)
392#define ferror_unlocked(p) __sferror(p)
393#define clearerr_unlocked(p) __sclearerr(p)
394
395#ifndef _ANSI_SOURCE
396#define fileno_unlocked(p) __sfileno(p)
397#endif
398
399#define getc_unlocked(fp) __sgetc(fp)
400#define putc_unlocked(x, fp) __sputc(x, fp)
401
402#define getchar_unlocked() getc_unlocked(stdin)
403#define putchar_unlocked(x) putc_unlocked(x, stdout)
404
405#endif /* !_STDIO_H_ */
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 *));
213int ferror __P((FILE *));
214int fflush __P((FILE *));
215int fgetc __P((FILE *));
216int fgetpos __P((FILE *, fpos_t *));
217char *fgets __P((char *, int, FILE *));
218FILE *fopen __P((const char *, const char *));
219int fprintf __P((FILE *, const char *, ...));
220int fputc __P((int, FILE *));
221int fputs __P((const char *, FILE *));
222size_t fread __P((void *, size_t, size_t, FILE *));
223FILE *freopen __P((const char *, const char *, FILE *));
224int fscanf __P((FILE *, const char *, ...));
225int fseek __P((FILE *, long, int));
226int fsetpos __P((FILE *, const fpos_t *));
227long ftell __P((FILE *));
228size_t fwrite __P((const void *, size_t, size_t, FILE *));
229int getc __P((FILE *));
230int getchar __P((void));
231char *gets __P((char *));
232#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
233extern __const int sys_nerr; /* perror(3) external variables */
234extern __const char *__const sys_errlist[];
235#endif
236void perror __P((const char *));
237int printf __P((const char *, ...));
238int putc __P((int, FILE *));
239int putchar __P((int));
240int puts __P((const char *));
241int remove __P((const char *));
242int rename __P((const char *, const char *));
243void rewind __P((FILE *));
244int scanf __P((const char *, ...));
245void setbuf __P((FILE *, char *));
246int setvbuf __P((FILE *, char *, int, size_t));
247int sprintf __P((char *, const char *, ...));
248int sscanf __P((const char *, const char *, ...));
249FILE *tmpfile __P((void));
250char *tmpnam __P((char *));
251int ungetc __P((int, FILE *));
252int vfprintf __P((FILE *, const char *, _BSD_VA_LIST_));
253int vprintf __P((const char *, _BSD_VA_LIST_));
254int vsprintf __P((char *, const char *, _BSD_VA_LIST_));
255__END_DECLS
256
257/*
258 * Functions defined in POSIX 1003.1.
259 */
260#ifndef _ANSI_SOURCE
261/* size for cuserid(3); UT_NAMESIZE + 1, see <utmp.h> */
262#define L_cuserid 17
263
264#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */
265
266__BEGIN_DECLS
267char *ctermid __P((char *));
268FILE *fdopen __P((int, const char *));
269int fileno __P((FILE *));
270int ftrylockfile __P((FILE *));
271void flockfile __P((FILE *));
272void funlockfile __P((FILE *));
273__END_DECLS
274#endif /* not ANSI */
275
276/*
277 * Portability hacks. See <sys/types.h>.
278 */
279#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
280__BEGIN_DECLS
281#ifndef _FTRUNCATE_DECLARED
282#define _FTRUNCATE_DECLARED
283int ftruncate __P((int, _BSD_OFF_T_));
284#endif
285#ifndef _LSEEK_DECLARED
286#define _LSEEK_DECLARED
287_BSD_OFF_T_ lseek __P((int, _BSD_OFF_T_, int));
288#endif
289#ifndef _MMAP_DECLARED
290#define _MMAP_DECLARED
291void *mmap __P((void *, size_t, int, int, int, _BSD_OFF_T_));
292#endif
293#ifndef _TRUNCATE_DECLARED
294#define _TRUNCATE_DECLARED
295int truncate __P((const char *, _BSD_OFF_T_));
296#endif
297__END_DECLS
298#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
299
300/*
301 * Routines that are purely local.
302 */
303#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
304__BEGIN_DECLS
305int asprintf __P((char **, const char *, ...)) __printflike(2, 3);
306char *ctermid_r __P((char *));
307char *fgetln __P((FILE *, size_t *));
308int fpurge __P((FILE *));
309int fseeko __P((FILE *, _BSD_OFF_T_, int));
310_BSD_OFF_T_ ftello __P((FILE *));
311int getw __P((FILE *));
312int pclose __P((FILE *));
313FILE *popen __P((const char *, const char *));
314int putw __P((int, FILE *));
315void setbuffer __P((FILE *, char *, int));
316int setlinebuf __P((FILE *));
317char *tempnam __P((const char *, const char *));
318int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
319int vasprintf __P((char **, const char *, _BSD_VA_LIST_))
320 __printflike(2, 0);
321int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_))
322 __printflike(3, 0);
323int vscanf __P((const char *, _BSD_VA_LIST_)) __scanflike(1, 0);
324int vsscanf __P((const char *, const char *, _BSD_VA_LIST_))
325 __scanflike(2, 0);
326__END_DECLS
327
328/*
329 * This is a #define because the function is used internally and
330 * (unlike vfscanf) the name __vfscanf is guaranteed not to collide
331 * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
332 */
333#define vfscanf __vfscanf
334
335/*
336 * Stdio function-access interface.
337 */
338__BEGIN_DECLS
339FILE *funopen __P((const void *,
340 int (*)(void *, char *, int),
341 int (*)(void *, const char *, int),
342 fpos_t (*)(void *, fpos_t, int),
343 int (*)(void *)));
344__END_DECLS
345#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
346#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
347#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
348
349/*
350 * Functions internal to the implementation.
351 */
352__BEGIN_DECLS
353int __srget __P((FILE *));
354int __vfscanf __P((FILE *, const char *, _BSD_VA_LIST_));
355int __svfscanf __P((FILE *, const char *, _BSD_VA_LIST_));
356int __swbuf __P((int, FILE *));
357__END_DECLS
358
359/*
360 * The __sfoo macros are here so that we can
361 * define function versions in the C library.
362 */
363#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
364#if defined(__GNUC__) && defined(__STDC__)
365static __inline int __sputc(int _c, FILE *_p) {
366 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
367 return (*_p->_p++ = _c);
368 else
369 return (__swbuf(_c, _p));
370}
371#else
372/*
373 * This has been tuned to generate reasonable code on the vax using pcc.
374 */
375#define __sputc(c, p) \
376 (--(p)->_w < 0 ? \
377 (p)->_w >= (p)->_lbfsize ? \
378 (*(p)->_p = (c)), *(p)->_p != '\n' ? \
379 (int)*(p)->_p++ : \
380 __swbuf('\n', p) : \
381 __swbuf((int)(c), p) : \
382 (*(p)->_p = (c), (int)*(p)->_p++))
383#endif
384
385#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
386#define __sferror(p) (((p)->_flags & __SERR) != 0)
387#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
388#define __sfileno(p) ((p)->_file)
389
390/*
391 * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
392 * B.8.2.7 for the rationale behind the *_unlocked() macros.
393 */
394#define feof_unlocked(p) __sfeof(p)
395#define ferror_unlocked(p) __sferror(p)
396#define clearerr_unlocked(p) __sclearerr(p)
397
398#ifndef _ANSI_SOURCE
399#define fileno_unlocked(p) __sfileno(p)
400#endif
401
402#define getc_unlocked(fp) __sgetc(fp)
403#define putc_unlocked(x, fp) __sputc(x, fp)
404
405#define getchar_unlocked() getc_unlocked(stdin)
406#define putchar_unlocked(x) putc_unlocked(x, stdout)
407
408#endif /* !_STDIO_H_ */