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Last change on this file since 1454 was 1454, checked in by bird, 21 years ago
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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: src/include/stdio.h,v 1.51 2003/01/13 08:41:47 tjr Exp $
38	*/
39
40	/** @file
41	* FreeBSD 5.1
42	* @changed bird: EMX isms + LIBC implementation specifics.
43	* @chagned bird: Made quite a few @todos on function which aren't implemented.
44	*/
45
46	#ifndef _STDIO_H_
47	#define _STDIO_H_
48
49	#include <sys/cdefs.h>
50	#include <sys/_types.h>
51
52	typedef __off_t fpos_t;
53
54	#if !defined(_SIZE_T_DECLARED) && !defined(_SIZE_T) /* bird: emx */
55	typedef __size_t size_t;
56	#define _SIZE_T_DECLARED
57	#define _SIZE_T /* bird: emx */
58	#endif
59
60	#if __BSD_VISIBLE \|\| __POSIX_VISIBLE >= 200112 \|\| __XSI_VISIBLE
61	#if !defined(_VA_LIST_DECLARED) && !defined(_VA_LIST) /* bird: emx */
62	typedef __va_list va_list;
63	#define _VA_LIST_DECLARED
64	#define _VA_LIST /* bird: emx */
65	#endif
66	#endif
67
68	#ifndef NULL
69	#define NULL 0
70	#endif
71
72	#if 0 /* bird: emx */
73
74	#define _FSTDIO /* Define for new stdio with functions. */
75
76
77	/*
78	* NB: to fit things in six character monocase externals, the stdio
79	* code uses the prefix `__s' for stdio objects, typically followed
80	* by a three-character attempt at a mnemonic.
81	*/
82
83	/* stdio buffers */
84	struct __sbuf {
85	unsigned char *_base;
86	int _size;
87	};
88
89	/* hold a buncha junk that would grow the ABI */
90	struct __sFILEX;
91
92	/*
93	* stdio state variables.
94	*
95	* The following always hold:
96	*
97	* if (_flags&(__SLBF\|__SWR)) == (__SLBF\|__SWR),
98	* _lbfsize is -_bf._size, else _lbfsize is 0
99	* if _flags&__SRD, _w is 0
100	* if _flags&__SWR, _r is 0
101	*
102	* This ensures that the getc and putc macros (or inline functions) never
103	* try to write or read from a file that is in `read' or `write' mode.
104	* (Moreover, they can, and do, automatically switch from read mode to
105	* write mode, and back, on "r+" and "w+" files.)
106	*
107	* _lbfsize is used only to make the inline line-buffered output stream
108	* code as compact as possible.
109	*
110	* _ub, _up, and _ur are used when ungetc() pushes back more characters
111	* than fit in the current _bf, or when ungetc() pushes back a character
112	* that does not match the previous one in _bf. When this happens,
113	* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
114	* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
115	*
116	* NB: see WARNING above before changing the layout of this structure!
117	*/
118	typedef struct __sFILE {
119	unsigned char _p; / current position in (some) buffer */
120	int _r; /* read space left for getc() */
121	int _w; /* write space left for putc() */
122	short _flags; /* flags, below; this FILE is free if 0 */
123	short _file; /* fileno, if Unix descriptor, else -1 */
124	struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
125	int _lbfsize; /* 0 or -_bf._size, for inline putc */
126
127	/* operations */
128	void _cookie; / cookie passed to io functions */
129	int (_close)(void );
130	int (_read)(void , char *, int);
131	fpos_t (_seek)(void , fpos_t, int);
132	int (_write)(void , const char *, int);
133
134	/* separate buffer for long sequences of ungetc() */
135	struct __sbuf _ub; /* ungetc buffer */
136	struct __sFILEX _extra; / additions to FILE to not break ABI */
137	int _ur; /* saved _r when _r is counting ungetc data */
138
139	/* tricks to meet minimum requirements even when malloc() fails */
140	unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
141	unsigned char _nbuf[1]; /* guarantee a getc() buffer */
142
143	/* separate buffer for fgetln() when line crosses buffer boundary */
144	struct __sbuf _lb; /* buffer for fgetln() */
145
146	/* Unix stdio files get aligned to block boundaries on fseek() */
147	int _blksize; /* stat.st_blksize (may be != _bf._size) */
148	fpos_t _offset; /* current lseek offset (see WARNING) */
149	} FILE;
150
151	__BEGIN_DECLS
152	extern FILE *__stdinp;
153	extern FILE *__stdoutp;
154	extern FILE *__stderrp;
155	__END_DECLS
156
157	#define __SLBF 0x0001 /* line buffered */
158	#define __SNBF 0x0002 /* unbuffered */
159	#define __SRD 0x0004 /* OK to read */
160	#define __SWR 0x0008 /* OK to write */
161	/* RD and WR are never simultaneously asserted */
162	#define __SRW 0x0010 /* open for reading & writing */
163	#define __SEOF 0x0020 /* found EOF */
164	#define __SERR 0x0040 /* found error */
165	#define __SMBF 0x0080 /* _buf is from malloc */
166	#define __SAPP 0x0100 /* fdopen()ed in append mode */
167	#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
168	#define __SOPT 0x0400 /* do fseek() optimization */
169	#define __SNPT 0x0800 /* do not do fseek() optimization */
170	#define __SOFF 0x1000 /* set iff _offset is in fact correct */
171	#define __SMOD 0x2000 /* true => fgetln modified _p text */
172	#define __SALC 0x4000 /* allocate string space dynamically */
173	#define __SIGN 0x8000 /* ignore this file in _fwalk */
174
175	#else /* bird: EMX specific FILE stuff starts. */
176
177	#define _FILE_T
178	#define _FILE_MEMBERS_HAVE_UNDERSCORE
179	struct _file2;
180	typedef struct _FILE
181	{
182	char * _ptr;
183	char * _buffer;
184	int _rcount;
185	int _wcount;
186	int _handle;
187	int _flags;
188	int _buf_size;
189	int _tmpidx;
190	int _pid;
191	char _char_buf;
192	unsigned char _ungetc_count;
193	short _mbstate;
194	int (_flush)(struct _FILE , int);
195
196	/** The Mutex Semaphore. */
197	union
198	{
199	#if defined (_SYS_FMUTEX_H)
200	_fmutex __fsem;
201	#endif
202	char __rsem_ersatz[8];
203	} __u;
204	/** Pointer to the stream vector which thie FILE belongs to.
205	* This member is the first which should not be zeroed by _newstream()! */
206	void *__pSV;
207	} FILE;
208
209	__BEGIN_DECLS
210	extern FILE *__stdinp;
211	extern FILE *__stdoutp;
212	extern FILE *__stderrp;
213	__END_DECLS
214
215	#endif /* bird: EMX specific FILE stuff ends. */
216
217
218	/*
219	* The following three definitions are for ANSI C, which took them
220	* from System V, which brilliantly took internal interface macros and
221	* made them official arguments to setvbuf(), without renaming them.
222	* Hence, these ugly _IOxxx names are supposed to appear in user code.
223	*
224	* Although numbered as their counterparts above, the implementation
225	* does not rely on this.
226	*/
227	#define _IOFBF 0 /* setvbuf should set fully buffered */
228	#define _IOLBF 0x20 /* bird: emx, was 1 / / setvbuf should set line buffered */
229	#define _IONBF 0x40 /* bird: emx, was 2 / / setvbuf should set unbuffered */
230
231	#define BUFSIZ 8192 /* bird: emx, was 1024 / / size of buffer used by setbuf */
232	#define EOF (-1)
233
234	/*
235	* FOPEN_MAX is a minimum maximum, and is the number of streams that
236	* stdio can provide without attempting to allocate further resources
237	* (which could fail). Do not use this for anything.
238	*/
239	/* must be == _POSIX_STREAM_MAX <limits.h> */
240	#define FOPEN_MAX 14 /* bird: emx, was 20 / / must be <= OPEN_MAX <sys/syslimits.h> */
241	#define FILENAME_MAX 260 /* bird: emx, was 1024 / / must be <= PATH_MAX <sys/syslimits.h> */
242
243	/* System V/ANSI C; this is the wrong way to do this, do not use these. */
244	#if __XSI_VISIBLE
245	#define P_tmpdir "." /* bird: emx, was "/var/tmp/" */
246	#endif
247	#define L_tmpnam 260 /* bird: emx, was 1024 / / XXX must be == PATH_MAX */
248	#define TMP_MAX 1000 /* bird: emx, was 308915776 */
249
250	#ifndef SEEK_SET
251	#define SEEK_SET 0 /* set file offset to offset */
252	#endif
253	#ifndef SEEK_CUR
254	#define SEEK_CUR 1 /* set file offset to current plus offset */
255	#endif
256	#ifndef SEEK_END
257	#define SEEK_END 2 /* set file offset to EOF plus offset */
258	#endif
259
260	#define stdin __stdinp
261	#define stdout __stdoutp
262	#define stderr __stderrp
263
264	__BEGIN_DECLS
265	/*
266	* Functions defined in ANSI C standard.
267	*/
268	void clearerr(FILE *);
269	int fclose(FILE *);
270	int feof(FILE *);
271	int ferror(FILE *);
272	int fflush(FILE *);
273	int fgetc(FILE *);
274	int fgetpos(FILE * __restrict, fpos_t * __restrict);
275	char fgets(char __restrict, int, FILE * __restrict);
276	FILE fopen(const char __restrict, const char * __restrict);
277	int fprintf(FILE * __restrict, const char * __restrict, ...);
278	int fputc(int, FILE *);
279	int fputs(const char * __restrict, FILE * __restrict);
280	size_t fread(void * __restrict, size_t, size_t, FILE * __restrict);
281	FILE freopen(const char __restrict, const char * __restrict, FILE * __restrict);
282	int fscanf(FILE * __restrict, const char * __restrict, ...);
283	int fseek(FILE *, long, int);
284	int fsetpos(FILE , const fpos_t );
285	long ftell(FILE *);
286	size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
287	#if 0 /* bird: emx */
288	int getc(FILE *);
289	#else /* bird: emx */
290	/** @todo: Check the standard, if this is correct or not. declaration might be required. */
291	#define getc(s) fgetc(s) /* bird: emx */
292	#endif /* bird: emx */
293	int getchar(void);
294	char gets(char );
295	void perror(const char *);
296	int printf(const char * __restrict, ...);
297	#if 0 /* bird: emx */
298	int putc(int, FILE *);
299	#else /* bird: emx */
300	/** @todo: Check the standard, if this is correct or not. declaration might be required. */
301	#define putc(c,s) fputc(c,s) /* bird: emx */
302	#endif /* bird: emx */
303	int putchar(int);
304	int puts(const char *);
305	int remove(const char *);
306	int rename(const char , const char );
307	void rewind(FILE *);
308	int scanf(const char * __restrict, ...);
309	void setbuf(FILE * __restrict, char * __restrict);
310	int setvbuf(FILE * __restrict, char * __restrict, int, size_t);
311	int sprintf(char * __restrict, const char * __restrict, ...);
312	int sscanf(const char * __restrict, const char * __restrict, ...);
313	FILE *tmpfile(void);
314	char tmpnam(char );
315	int ungetc(int, FILE *);
316	int vfprintf(FILE * __restrict, const char * __restrict,
317	__va_list);
318	int vprintf(const char * __restrict, __va_list);
319	int vsprintf(char * __restrict, const char * __restrict,
320	__va_list);
321
322	#if __ISO_C_VISIBLE >= 1999
323	int snprintf(char * __restrict, size_t, const char * __restrict,
324	...) __printflike(3, 4);
325	int vfscanf(FILE * __restrict, const char * __restrict, __va_list)
326	__scanflike(2, 0);
327	int vscanf(const char * __restrict, __va_list) __scanflike(1, 0);
328	int vsnprintf(char * __restrict, size_t, const char * __restrict,
329	__va_list) __printflike(3, 0);
330	int vsscanf(const char * __restrict, const char * __restrict, __va_list)
331	__scanflike(2, 0);
332	#endif
333
334	/*
335	* Functions defined in all versions of POSIX 1003.1.
336	*/
337	#if __BSD_VISIBLE \|\| __POSIX_VISIBLE <= 199506
338	/* size for cuserid(3); UT_NAMESIZE + 1, see <utmp.h> */
339	#define L_cuserid 9 /* bird: emx, was 17 / / legacy */
340	#endif
341
342	#if __POSIX_VISIBLE
343	#define L_ctermid 260 /* bird: emx, was 1024 / / size for ctermid(3); PATH_MAX */
344
345	/** @todo char ctermid(char ); */
346	FILE fdopen(int, const char );
347	int fileno(FILE *);
348	#endif /* __POSIX_VISIBLE */
349
350	#if __POSIX_VISIBLE >= 199209
351	int pclose(FILE *);
352	FILE popen(const char , const char *);
353	#endif
354
355	#if __POSIX_VISIBLE >= 199506
356	/** @todo int ftrylockfile(FILE ); /
357	/** @todo void flockfile(FILE ); /
358	/** @todo void funlockfile(FILE ); /
359
360	/*
361	* These are normally used through macros as defined below, but POSIX
362	* requires functions as well.
363	*/
364	/** @todo int getc_unlocked(FILE ); /
365	/** @todo int getchar_unlocked(void); */
366	/** @todo int putc_unlocked(int, FILE ); /
367	/** @todo int putchar_unlocked(int); */
368	#endif
369	#if __BSD_VISIBLE
370	/** @todo void clearerr_unlocked(FILE ); /
371	/** @todo int feof_unlocked(FILE ); /
372	/** @todo int ferror_unlocked(FILE ); /
373	/** @todo int fileno_unlocked(FILE ); /
374	#endif
375
376	#if __POSIX_VISIBLE >= 200112
377	int fseeko(FILE *, __off_t, int);
378	__off_t ftello(FILE *);
379	#endif
380
381	#if __BSD_VISIBLE \|\| __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600
382	int getw(FILE *);
383	int putw(int, FILE *);
384	#endif /* BSD or X/Open before issue 6 */
385
386	#if __XSI_VISIBLE
387	char tempnam(const char , const char *);
388	#endif
389
390	/*
391	* Routines that are purely local.
392	*/
393	#if __BSD_VISIBLE
394	/ @todo int asprintf(char , const char , ...) __printflike(2, 3); /
395	/** @todo char ctermid_r(char ); */
396	/** @todo char fgetln(FILE , size_t ); /
397	#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 \|\| __GNUC__ >= 3
398	#define __ATTR_FORMAT_ARG __attribute__((__format_arg__(2)))
399	#else
400	#define __ATTR_FORMAT_ARG
401	#endif
402	/** @todo __const char fmtcheck(const char , const char ) __ATTR_FORMAT_ARG; /
403	/** @todo int fpurge(FILE ); /
404	void setbuffer(FILE , char , int);
405	/** @todo int setlinebuf(FILE ); /
406	/ @todo int vasprintf(char , const char *, __va_list)
407	__printflike(2, 0); */
408
409	/*
410	* The system error table contains messages for the first sys_nerr
411	* positive errno values. Use strerror() or strerror_r() from <string.h>
412	* instead.
413	*/
414	extern __const int sys_nerr;
415	extern __const char *__const sys_errlist[];
416
417	/*
418	* Stdio function-access interface.
419	*/
420	/** @todo FILE funopen(const void ,
421	int ()(void , char *, int),
422	int ()(void , const char *, int),
423	fpos_t ()(void , fpos_t, int),
424	int ()(void )); */
425	/** @todo #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) */
426	/** @todo #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) */
427
428	/*
429	* Portability hacks. See <sys/types.h>.
430	*/
431	#ifndef _FTRUNCATE_DECLARED
432	#define _FTRUNCATE_DECLARED
433	int ftruncate(int, __off_t);
434	#endif
435	#ifndef _LSEEK_DECLARED
436	#define _LSEEK_DECLARED
437	__off_t lseek(int, __off_t, int);
438	#endif
439	#ifndef _MMAP_DECLARED
440	#define _MMAP_DECLARED
441	void mmap(void , size_t, int, int, int, __off_t);
442	#endif
443	#ifndef _TRUNCATE_DECLARED
444	#define _TRUNCATE_DECLARED
445	int truncate(const char *, __off_t);
446	#endif
447	#endif /* __BSD_VISIBLE */
448
449	#if 0 /* bird: Skip FreeBSD sepcific LIBC stuff. */
450	/*
451	* Functions internal to the implementation.
452	*/
453	int __srget(FILE *);
454	int __swbuf(int, FILE *);
455
456	/*
457	* The __sfoo macros are here so that we can
458	* define function versions in the C library.
459	*/
460	#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
461	#if defined(__GNUC__) && defined(__STDC__)
462	static __inline int __sputc(int _c, FILE *_p) {
463	if (--_p->_w >= 0 \|\| (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
464	return (*_p->_p++ = _c);
465	else
466	return (__swbuf(_c, _p));
467	}
468	#else
469	/*
470	* This has been tuned to generate reasonable code on the vax using pcc.
471	*/
472	#define __sputc(c, p) \
473	(--(p)->_w < 0 ? \
474	(p)->_w >= (p)->_lbfsize ? \
475	((p)->_p = (c)), (p)->_p != '\n' ? \
476	(int)*(p)->_p++ : \
477	__swbuf('\n', p) : \
478	__swbuf((int)(c), p) : \
479	((p)->_p = (c), (int)(p)->_p++))
480	#endif
481
482	#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
483	#define __sferror(p) (((p)->_flags & __SERR) != 0)
484	#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR\|__SEOF)))
485	#define __sfileno(p) ((p)->_file)
486
487	#if __BSD_VISIBLE
488	/*
489	* See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
490	* B.8.2.7 for the rationale behind the *_unlocked() macros.
491	*/
492	#define feof_unlocked(p) __sfeof(p)
493	#define ferror_unlocked(p) __sferror(p)
494	#define clearerr_unlocked(p) __sclearerr(p)
495	#define fileno_unlocked(p) __sfileno(p)
496	#endif
497	#if __POSIX_VISIBLE >= 199506
498	#define getc_unlocked(fp) __sgetc(fp)
499	#define putc_unlocked(x, fp) __sputc(x, fp)
500
501	#define getchar_unlocked() getc_unlocked(stdin)
502	#define putchar_unlocked(x) putc_unlocked(x, stdout)
503	#endif
504
505	#endif /* bird: Skip FreeBSD sepcific LIBC stuff. */
506
507
508	/* bird: start of EMX isms. */
509
510	#if !defined (_IOREAD)
511	/** @todo change to double underscore prefix to prevent confusion with
512	* setvbuf() constants. See the short rant about it above. */
513	#define _IOREAD 0x01
514	#define _IOWRT 0x02
515	#define _IORW 0x04
516	#define _IOEOF 0x08
517	#define _IOERR 0x10
518	#endif
519
520	int _fill (FILE *);
521	int _flush (int, FILE *);
522	int _rmtmp (void);
523
524	extern __inline__ int feof (FILE *_s)
525	{
526	return (_s->_flags & _IOEOF ? 1 : 0);
527	}
528
529	extern __inline__ int ferror (FILE *_s)
530	{
531	return (_s->_flags & _IOERR ? 1 : 0);
532	}
533
534	extern __inline__ int getchar (void) { return getc (stdin); }
535	extern __inline__ int putchar (int _c) { return putc (_c, stdout); }
536
537	#if !defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE) \|\| defined(__USE_EMX)
538
539	char cuserid (char );
540	int fcloseall (void);
541	int fgetchar (void);
542	int flushall (void);
543	int fputchar (int);
544
545	#endif
546
547
548	#if (!defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE)) \|\| defined (_WITH_UNDERSCORE) \|\| defined(__USE_EMX)
549
550	int _fcloseall (void);
551	FILE _fdopen (int, __const__ char );
552	int _fgetchar (void);
553	int _flushall (void);
554	int _fputchar (int);
555	int _fseek_hdr (FILE *);
556	int _fsetmode (FILE , __const__ char );
557	FILE _fsopen (__const__ char , __const__ char *, int);
558	int _getw (FILE *);
559	char _mfclose (FILE );
560	FILE _mfopen (char , __const__ char *, size_t, int);
561	int _pclose (FILE *);
562	FILE _popen (__const__ char , __const__ char *);
563	int _putw (int, FILE *);
564	void _setbuffer (FILE , char , int);
565	int _snprintf (char , size_t, __const__ char , ...);
566	char _tempnam (__const__ char , __const__ char *);
567	int _vsnprintf (char , size_t, __const__ char , va_list);
568
569	#endif
570	/* bird: end of EMX isms. */
571
572	__END_DECLS
573	#endif /* !_STDIO_H_ */
574

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