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source: trunk/src/emx/include/stdio.h@ 1570

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Last change on this file since 1570 was 1506, checked in by bird, 21 years ago
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1	/* stdio.h,v 1.13 2004/09/14 22:27:36 bird Exp */
2	/** @file
3	* FreeBSD 5.1
4	* @changed bird: EMX isms + LIBC implementation specifics.
5	* @chagned bird: Made quite a few @todos on function which aren't implemented.
6	*/
7
8	/*-
9	* Copyright (c) 1990, 1993
10	* The Regents of the University of California. All rights reserved.
11	*
12	* This code is derived from software contributed to Berkeley by
13	* Chris Torek.
14	*
15	* Redistribution and use in source and binary forms, with or without
16	* modification, are permitted provided that the following conditions
17	* are met:
18	* 1. Redistributions of source code must retain the above copyright
19	* notice, this list of conditions and the following disclaimer.
20	* 2. Redistributions in binary form must reproduce the above copyright
21	* notice, this list of conditions and the following disclaimer in the
22	* documentation and/or other materials provided with the distribution.
23	* 3. All advertising materials mentioning features or use of this software
24	* must display the following acknowledgement:
25	* This product includes software developed by the University of
26	* California, Berkeley and its contributors.
27	* 4. Neither the name of the University nor the names of its contributors
28	* may be used to endorse or promote products derived from this software
29	* without specific prior written permission.
30	*
31	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
32	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
35	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41	* SUCH DAMAGE.
42	*
43	* @(#)stdio.h 8.5 (Berkeley) 4/29/95
44	* $FreeBSD: src/include/stdio.h,v 1.51 2003/01/13 08:41:47 tjr Exp $
45	*/
46
47	#ifndef _STDIO_H_
48	#define _STDIO_H_
49
50	#include <sys/cdefs.h>
51	#include <sys/_types.h>
52
53	typedef __off_t fpos_t;
54
55	#if !defined(_SIZE_T_DECLARED) && !defined(_SIZE_T) /* bird: emx */
56	typedef __size_t size_t;
57	#define _SIZE_T_DECLARED
58	#define _SIZE_T /* bird: emx */
59	#endif
60
61	#if __BSD_VISIBLE \|\| __POSIX_VISIBLE >= 200112 \|\| __XSI_VISIBLE
62	#if !defined(_VA_LIST_DECLARED) && !defined(_VA_LIST) /* bird: emx */
63	typedef __va_list va_list;
64	#define _VA_LIST_DECLARED
65	#define _VA_LIST /* bird: emx */
66	#endif
67	#endif
68
69	#ifndef NULL
70	#define NULL 0
71	#endif
72
73	#if 0 /* bird: emx */
74
75	#define _FSTDIO /* Define for new stdio with functions. */
76
77
78	/*
79	* NB: to fit things in six character monocase externals, the stdio
80	* code uses the prefix `__s' for stdio objects, typically followed
81	* by a three-character attempt at a mnemonic.
82	*/
83
84	/* stdio buffers */
85	struct __sbuf {
86	unsigned char *_base;
87	int _size;
88	};
89
90	/* hold a buncha junk that would grow the ABI */
91	struct __sFILEX;
92
93	/*
94	* stdio state variables.
95	*
96	* The following always hold:
97	*
98	* if (_flags&(__SLBF\|__SWR)) == (__SLBF\|__SWR),
99	* _lbfsize is -_bf._size, else _lbfsize is 0
100	* if _flags&__SRD, _w is 0
101	* if _flags&__SWR, _r is 0
102	*
103	* This ensures that the getc and putc macros (or inline functions) never
104	* try to write or read from a file that is in `read' or `write' mode.
105	* (Moreover, they can, and do, automatically switch from read mode to
106	* write mode, and back, on "r+" and "w+" files.)
107	*
108	* _lbfsize is used only to make the inline line-buffered output stream
109	* code as compact as possible.
110	*
111	* _ub, _up, and _ur are used when ungetc() pushes back more characters
112	* than fit in the current _bf, or when ungetc() pushes back a character
113	* that does not match the previous one in _bf. When this happens,
114	* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
115	* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
116	*
117	* NB: see WARNING above before changing the layout of this structure!
118	*/
119	typedef struct __sFILE {
120	unsigned char _p; / current position in (some) buffer */
121	int _r; /* read space left for getc() */
122	int _w; /* write space left for putc() */
123	short _flags; /* flags, below; this FILE is free if 0 */
124	short _file; /* fileno, if Unix descriptor, else -1 */
125	struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
126	int _lbfsize; /* 0 or -_bf._size, for inline putc */
127
128	/* operations */
129	void _cookie; / cookie passed to io functions */
130	int (_close)(void );
131	int (_read)(void , char *, int);
132	fpos_t (_seek)(void , fpos_t, int);
133	int (_write)(void , const char *, int);
134
135	/* separate buffer for long sequences of ungetc() */
136	struct __sbuf _ub; /* ungetc buffer */
137	struct __sFILEX _extra; / additions to FILE to not break ABI */
138	int _ur; /* saved _r when _r is counting ungetc data */
139
140	/* tricks to meet minimum requirements even when malloc() fails */
141	unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
142	unsigned char _nbuf[1]; /* guarantee a getc() buffer */
143
144	/* separate buffer for fgetln() when line crosses buffer boundary */
145	struct __sbuf _lb; /* buffer for fgetln() */
146
147	/* Unix stdio files get aligned to block boundaries on fseek() */
148	int _blksize; /* stat.st_blksize (may be != _bf._size) */
149	fpos_t _offset; /* current lseek offset (see WARNING) */
150	} FILE;
151
152	__BEGIN_DECLS
153	extern FILE *__stdinp;
154	extern FILE *__stdoutp;
155	extern FILE *__stderrp;
156	__END_DECLS
157
158	#define __SLBF 0x0001 /* line buffered */
159	#define __SNBF 0x0002 /* unbuffered */
160	#define __SRD 0x0004 /* OK to read */
161	#define __SWR 0x0008 /* OK to write */
162	/* RD and WR are never simultaneously asserted */
163	#define __SRW 0x0010 /* open for reading & writing */
164	#define __SEOF 0x0020 /* found EOF */
165	#define __SERR 0x0040 /* found error */
166	#define __SMBF 0x0080 /* _buf is from malloc */
167	#define __SAPP 0x0100 /* fdopen()ed in append mode */
168	#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
169	#define __SOPT 0x0400 /* do fseek() optimization */
170	#define __SNPT 0x0800 /* do not do fseek() optimization */
171	#define __SOFF 0x1000 /* set iff _offset is in fact correct */
172	#define __SMOD 0x2000 /* true => fgetln modified _p text */
173	#define __SALC 0x4000 /* allocate string space dynamically */
174	#define __SIGN 0x8000 /* ignore this file in _fwalk */
175
176	#else /* bird: EMX specific FILE stuff starts. */
177
178	#define _FILE_T
179	#define _FILE_MEMBERS_HAVE_UNDERSCORE
180	struct _file2;
181	typedef struct _FILE
182	{
183	char * _ptr;
184	char * _buffer;
185	int _rcount;
186	int _wcount;
187	int _handle;
188	int _flags;
189	int _buf_size;
190	int _tmpidx;
191	int _pid;
192	char _char_buf;
193	unsigned char _ungetc_count;
194	short _mbstate;
195	int (_flush)(struct _FILE , int);
196
197	/** The Mutex Semaphore. */
198	union
199	{
200	#if defined (_SYS_FMUTEX_H)
201	_fmutex __fsem;
202	#endif
203	char __rsem_ersatz[8];
204	} __u;
205	/** Pointer to the stream vector which thie FILE belongs to.
206	* This member is the first which should not be zeroed by _newstream()! */
207	void *__pSV;
208	} FILE;
209
210	__BEGIN_DECLS
211	extern FILE *__stdinp;
212	extern FILE *__stdoutp;
213	extern FILE *__stderrp;
214	__END_DECLS
215
216	#endif /* bird: EMX specific FILE stuff ends. */
217
218
219	/*
220	* The following three definitions are for ANSI C, which took them
221	* from System V, which brilliantly took internal interface macros and
222	* made them official arguments to setvbuf(), without renaming them.
223	* Hence, these ugly _IOxxx names are supposed to appear in user code.
224	*
225	* Although numbered as their counterparts above, the implementation
226	* does not rely on this.
227	*/
228	#define _IOFBF 0 /* setvbuf should set fully buffered */
229	#define _IOLBF 0x20 /* bird: emx, was 1 / / setvbuf should set line buffered */
230	#define _IONBF 0x40 /* bird: emx, was 2 / / setvbuf should set unbuffered */
231
232	#define BUFSIZ 8192 /* bird: emx, was 1024 / / size of buffer used by setbuf */
233	#define EOF (-1)
234
235	/*
236	* FOPEN_MAX is a minimum maximum, and is the number of streams that
237	* stdio can provide without attempting to allocate further resources
238	* (which could fail). Do not use this for anything.
239	*/
240	/* must be == _POSIX_STREAM_MAX <limits.h> */
241	#define FOPEN_MAX 14 /* bird: emx, was 20 / / must be <= OPEN_MAX <sys/syslimits.h> */
242	#define FILENAME_MAX 260 /* bird: emx, was 1024 / / must be <= PATH_MAX <sys/syslimits.h> */
243
244	/* System V/ANSI C; this is the wrong way to do this, do not use these. */
245	#if __XSI_VISIBLE
246	#define P_tmpdir "." /* bird: emx, was "/var/tmp/" */
247	#endif
248	#define L_tmpnam 260 /* bird: emx, was 1024 / / XXX must be == PATH_MAX */
249	#define TMP_MAX 1000 /* bird: emx, was 308915776 */
250
251	#ifndef SEEK_SET
252	#define SEEK_SET 0 /* set file offset to offset */
253	#endif
254	#ifndef SEEK_CUR
255	#define SEEK_CUR 1 /* set file offset to current plus offset */
256	#endif
257	#ifndef SEEK_END
258	#define SEEK_END 2 /* set file offset to EOF plus offset */
259	#endif
260
261	#define stdin __stdinp
262	#define stdout __stdoutp
263	#define stderr __stderrp
264
265	__BEGIN_DECLS
266	/*
267	* Functions defined in ANSI C standard.
268	*/
269	void clearerr(FILE *);
270	int fclose(FILE *);
271	int feof(FILE *);
272	int ferror(FILE *);
273	int fflush(FILE *);
274	int fgetc(FILE *);
275	int fgetpos(FILE * __restrict, fpos_t * __restrict);
276	char fgets(char __restrict, int, FILE * __restrict);
277	FILE fopen(const char __restrict, const char * __restrict);
278	int fprintf(FILE * __restrict, const char * __restrict, ...);
279	int fputc(int, FILE *);
280	int fputs(const char * __restrict, FILE * __restrict);
281	size_t fread(void * __restrict, size_t, size_t, FILE * __restrict);
282	FILE freopen(const char __restrict, const char * __restrict, FILE * __restrict);
283	int fscanf(FILE * __restrict, const char * __restrict, ...);
284	int fseek(FILE *, long, int);
285	int fsetpos(FILE , const fpos_t );
286	long ftell(FILE *);
287	size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
288	#if 0 /* bird: emx */
289	int getc(FILE *);
290	#else /* bird: emx */
291	/** @todo: Check the standard, if this is correct or not. declaration might be required. */
292	#define getc(s) fgetc(s) /* bird: emx */
293	#endif /* bird: emx */
294	int getchar(void);
295	char gets(char );
296	void perror(const char *);
297	int printf(const char * __restrict, ...);
298	#if 0 /* bird: emx */
299	int putc(int, FILE *);
300	#else /* bird: emx */
301	/** @todo: Check the standard, if this is correct or not. declaration might be required. */
302	#define putc(c,s) fputc(c,s) /* bird: emx */
303	#endif /* bird: emx */
304	int putchar(int);
305	int puts(const char *);
306	int remove(const char *);
307	int rename(const char , const char );
308	void rewind(FILE *);
309	int scanf(const char * __restrict, ...);
310	void setbuf(FILE * __restrict, char * __restrict);
311	int setvbuf(FILE * __restrict, char * __restrict, int, size_t);
312	int sprintf(char * __restrict, const char * __restrict, ...);
313	int sscanf(const char * __restrict, const char * __restrict, ...);
314	FILE *tmpfile(void);
315	char tmpnam(char );
316	int ungetc(int, FILE *);
317	int vfprintf(FILE * __restrict, const char * __restrict,
318	__va_list);
319	int vprintf(const char * __restrict, __va_list);
320	int vsprintf(char * __restrict, const char * __restrict,
321	__va_list);
322
323	#if __ISO_C_VISIBLE >= 1999
324	int snprintf(char * __restrict, size_t, const char * __restrict,
325	...) __printflike(3, 4);
326	int vfscanf(FILE * __restrict, const char * __restrict, __va_list)
327	__scanflike(2, 0);
328	int vscanf(const char * __restrict, __va_list) __scanflike(1, 0);
329	int vsnprintf(char * __restrict, size_t, const char * __restrict,
330	__va_list) __printflike(3, 0);
331	int vsscanf(const char * __restrict, const char * __restrict, __va_list)
332	__scanflike(2, 0);
333	#endif
334
335	/*
336	* Functions defined in all versions of POSIX 1003.1.
337	*/
338	#if __BSD_VISIBLE \|\| __POSIX_VISIBLE <= 199506
339	/* size for cuserid(3); UT_NAMESIZE + 1, see <utmp.h> */
340	#define L_cuserid 9 /* bird: emx, was 17 / / legacy */
341	#endif
342
343	#if __POSIX_VISIBLE
344	#define L_ctermid 260 /* bird: emx, was 1024 / / size for ctermid(3); PATH_MAX */
345
346	/** @todo char ctermid(char ); */
347	FILE fdopen(int, const char );
348	int fileno(FILE *);
349	#endif /* __POSIX_VISIBLE */
350
351	#if __POSIX_VISIBLE >= 199209
352	int pclose(FILE *);
353	FILE popen(const char , const char *);
354	#endif
355
356	#if __POSIX_VISIBLE >= 199506
357	/** @todo int ftrylockfile(FILE ); /
358	/** @todo void flockfile(FILE ); /
359	/** @todo void funlockfile(FILE ); /
360
361	/*
362	* These are normally used through macros as defined below, but POSIX
363	* requires functions as well.
364	*/
365	/** @todo int getc_unlocked(FILE ); /
366	/** @todo int getchar_unlocked(void); */
367	/** @todo int putc_unlocked(int, FILE ); /
368	/** @todo int putchar_unlocked(int); */
369	#endif
370	#if __BSD_VISIBLE
371	/** @todo void clearerr_unlocked(FILE ); /
372	/** @todo int feof_unlocked(FILE ); /
373	/** @todo int ferror_unlocked(FILE ); /
374	/** @todo int fileno_unlocked(FILE ); /
375	#endif
376
377	#if __POSIX_VISIBLE >= 200112
378	int fseeko(FILE *, __off_t, int);
379	__off_t ftello(FILE *);
380	#endif
381
382	#if __BSD_VISIBLE \|\| __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600
383	int getw(FILE *);
384	int putw(int, FILE *);
385	#endif /* BSD or X/Open before issue 6 */
386
387	#if __XSI_VISIBLE
388	char tempnam(const char , const char *);
389	#endif
390
391	/*
392	* Routines that are purely local.
393	*/
394	#if __BSD_VISIBLE
395	/ @todo int asprintf(char , const char , ...) __printflike(2, 3); /
396	/** @todo char ctermid_r(char ); */
397	/** @todo char fgetln(FILE , size_t ); /
398	#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 \|\| __GNUC__ >= 3
399	#define __ATTR_FORMAT_ARG __attribute__((__format_arg__(2)))
400	#else
401	#define __ATTR_FORMAT_ARG
402	#endif
403	/** @todo __const char fmtcheck(const char , const char ) __ATTR_FORMAT_ARG; /
404	/** @todo int fpurge(FILE ); /
405	void setbuffer(FILE , char , int);
406	/** @todo int setlinebuf(FILE ); /
407	/ @todo int vasprintf(char , const char *, __va_list)
408	__printflike(2, 0); */
409
410	/*
411	* The system error table contains messages for the first sys_nerr
412	* positive errno values. Use strerror() or strerror_r() from <string.h>
413	* instead.
414	*/
415	extern __const int sys_nerr;
416	extern __const char *__const sys_errlist[];
417
418	/*
419	* Stdio function-access interface.
420	*/
421	/** @todo FILE funopen(const void ,
422	int ()(void , char *, int),
423	int ()(void , const char *, int),
424	fpos_t ()(void , fpos_t, int),
425	int ()(void )); */
426	/** @todo #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) */
427	/** @todo #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) */
428
429	/*
430	* Portability hacks. See <sys/types.h>.
431	*/
432	#ifndef _FTRUNCATE_DECLARED
433	#define _FTRUNCATE_DECLARED
434	int ftruncate(int, __off_t);
435	#endif
436	#ifndef _LSEEK_DECLARED
437	#define _LSEEK_DECLARED
438	__off_t lseek(int, __off_t, int);
439	#endif
440	#ifndef _MMAP_DECLARED
441	#define _MMAP_DECLARED
442	void mmap(void , size_t, int, int, int, __off_t);
443	#endif
444	#ifndef _TRUNCATE_DECLARED
445	#define _TRUNCATE_DECLARED
446	int truncate(const char *, __off_t);
447	#endif
448	#endif /* __BSD_VISIBLE */
449
450	#if 0 /* bird: Skip FreeBSD sepcific LIBC stuff. */
451	/*
452	* Functions internal to the implementation.
453	*/
454	int __srget(FILE *);
455	int __swbuf(int, FILE *);
456
457	/*
458	* The __sfoo macros are here so that we can
459	* define function versions in the C library.
460	*/
461	#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
462	#if defined(__GNUC__) && defined(__STDC__)
463	static __inline int __sputc(int _c, FILE *_p) {
464	if (--_p->_w >= 0 \|\| (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
465	return (*_p->_p++ = _c);
466	else
467	return (__swbuf(_c, _p));
468	}
469	#else
470	/*
471	* This has been tuned to generate reasonable code on the vax using pcc.
472	*/
473	#define __sputc(c, p) \
474	(--(p)->_w < 0 ? \
475	(p)->_w >= (p)->_lbfsize ? \
476	((p)->_p = (c)), (p)->_p != '\n' ? \
477	(int)*(p)->_p++ : \
478	__swbuf('\n', p) : \
479	__swbuf((int)(c), p) : \
480	((p)->_p = (c), (int)(p)->_p++))
481	#endif
482
483	#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
484	#define __sferror(p) (((p)->_flags & __SERR) != 0)
485	#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR\|__SEOF)))
486	#define __sfileno(p) ((p)->_file)
487
488	#if __BSD_VISIBLE
489	/*
490	* See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
491	* B.8.2.7 for the rationale behind the *_unlocked() macros.
492	*/
493	#define feof_unlocked(p) __sfeof(p)
494	#define ferror_unlocked(p) __sferror(p)
495	#define clearerr_unlocked(p) __sclearerr(p)
496	#define fileno_unlocked(p) __sfileno(p)
497	#endif
498	#if __POSIX_VISIBLE >= 199506
499	#define getc_unlocked(fp) __sgetc(fp)
500	#define putc_unlocked(x, fp) __sputc(x, fp)
501
502	#define getchar_unlocked() getc_unlocked(stdin)
503	#define putchar_unlocked(x) putc_unlocked(x, stdout)
504	#endif
505
506	#endif /* bird: Skip FreeBSD specific LIBC stuff. */
507
508
509	/* bird: start of EMX isms. */
510
511	#if !defined (_IOREAD)
512	/** @todo change to double underscore prefix to prevent confusion with
513	* setvbuf() constants. See the short rant about it above. */
514	#define _IOREAD 0x01
515	#define _IOWRT 0x02
516	#define _IORW 0x04
517	#define _IOEOF 0x08
518	#define _IOERR 0x10
519	#endif
520
521	int _fill (FILE *);
522	int _flush (int, FILE *);
523	int _rmtmp (void);
524
525	extern __inline__ int feof (FILE *_s)
526	{
527	return (_s->_flags & _IOEOF ? 1 : 0);
528	}
529
530	extern __inline__ int ferror (FILE *_s)
531	{
532	return (_s->_flags & _IOERR ? 1 : 0);
533	}
534
535	extern __inline__ int getchar (void) { return getc (stdin); }
536	extern __inline__ int putchar (int _c) { return putc (_c, stdout); }
537
538	#if !defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE) \|\| defined(__USE_EMX)
539
540	char cuserid (char );
541	int fcloseall (void);
542	int fgetchar (void);
543	int flushall (void);
544	int fputchar (int);
545
546	#endif
547
548
549	#if (!defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE)) \|\| defined (_WITH_UNDERSCORE) \|\| defined(__USE_EMX)
550
551	int _fcloseall (void);
552	FILE _fdopen (int, __const__ char );
553	int _fgetchar (void);
554	int _flushall (void);
555	int _fputchar (int);
556	int _fseek_hdr (FILE *);
557	int _fsetmode (FILE , __const__ char );
558	FILE _fsopen (__const__ char , __const__ char *, int);
559	int _getw (FILE *);
560	char _mfclose (FILE );
561	FILE _mfopen (char , __const__ char *, size_t, int);
562	int _pclose (FILE *);
563	FILE _popen (__const__ char , __const__ char *);
564	int _putw (int, FILE *);
565	void _setbuffer (FILE , char , int);
566	int _snprintf (char , size_t, __const__ char , ...);
567	char _tempnam (__const__ char , __const__ char *);
568	int _vsnprintf (char , size_t, __const__ char , va_list);
569
570	#endif
571	/* bird: end of EMX isms. */
572
573	__END_DECLS
574	#endif /* !_STDIO_H_ */
575

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