source: Daodan/MinGW/include/io.h@ 1124

Last change on this file since 1124 was 1046, checked in by alloc, 8 years ago

Daodan: Added Windows MinGW and build batch file
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[1046]1/*
2 * io.h
3 *
4 * System level I/O functions and types.
5 *
6 * $Id: io.h,v 0e4f78dbc1ba 2016/06/17 14:16:01 keithmarshall $
7 *
8 * Written by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
9 * Copyright (C) 1997-2004, 2007, 2009, 2010, 2014-2016, MinGW.org Project.
10 *
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice, this permission notice, and the following
20 * disclaimer shall be included in all copies or substantial portions of
21 * the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
29 * DEALINGS IN THE SOFTWARE.
30 *
31 *
32 * NOTE: The file manipulation functions provided by Microsoft seem to
33 * work with either slash (/) or backslash (\) as the directory separator;
34 * (this is consistent with Microsoft's own documentation, on MSDN).
35 *
36 */
37#ifndef _IO_H
38#pragma GCC system_header
39
40/* Defer definition of the _IO_H multiple inclusion guard, to allow
41 * for selective inclusion by <wchar.h>, (in which case we should
42 * NOT define it).
43 */
44#ifndef __WCHAR_H_SOURCED__
45#define _IO_H
46
47/* All MinGW headers must include <_mingw.h>; we may do it here,
48 * assuming that <wchar.h> will have already take care to do so in
49 * the selective inclusion case.
50 */
51#include <_mingw.h>
52
53/* We also need time_t, and off_t, (and their variants); although
54 * it gives us more than we really need, this will provide them...
55 */
56#include <sys/types.h>
57
58#endif /* !__WCHAR_H_SOURCED__ */
59
60/* This will give us intptr_t, which we need in ALL cases, whether
61 * including <io.h> directly, or selectively via <wchar.h>; (note: we
62 * use the #include "..." form here, to ensure that we read the type
63 * definition directly from the stdint.h header located in the same
64 * directory as this <io.h> file).
65 */
66#define __need_intptr_t
67#include "stdint.h"
68
69/* Attributes of files as returned by _findfirst() et al. MSDN is not
70 * explicit about whether or not these should be defined when including
71 * <wchar.h>, but since they complement the _wfindfirst() API, which is
72 * declared there, it seems logical to make them visible in all cases
73 * of <io.h> inclusion.
74 */
75#define _A_NORMAL 0x00000000
76#define _A_RDONLY 0x00000001
77#define _A_HIDDEN 0x00000002
78#define _A_SYSTEM 0x00000004
79#define _A_VOLID 0x00000008
80#define _A_SUBDIR 0x00000010
81#define _A_ARCH 0x00000020
82
83#ifndef RC_INVOKED
84
85/* The maximum length of a file name. It may be better to use the Windows'
86 * GetVolumeInformation() function in preference to this constant, but hey,
87 * this works! In any case, we use this manifest constant when we declare
88 * the _findfirst() API, so its definition must be visible in all places
89 * where this, or any of its variants, is declared.
90 *
91 * Note that <stdio.h> also defines this, but we don't guard it, so that
92 * the compiler has a chance to catch inconsistencies.
93 */
94#define FILENAME_MAX (260)
95
96/* We must define _fsize_t, but some compilers (including GCC prior to
97 * version 4.0), may choke if we try to do so more than once...
98 */
99#if ! (defined _IO_H && defined _WCHAR_H)
100 /* ...so DO NOT define it during direct <io.h> inclusion, (i.e. _IO_H
101 * is defined), if <wchar.h> has already caused it to be defined, (i.e.
102 * _WCHAR_H is ALSO defined).
103 */
104typedef unsigned long _fsize_t;
105#endif /* ! (_IO_H && _WCHAR_H) */
106
107/* Functions for searching for files: _findfirst() sets errno to ENOENT,
108 * and returns -1 if no match is found; otherwise it returns a handle to
109 * be used in _findnext() and _findclose() calls. _findnext() may then be
110 * used to identify further matches; it updates the search data, returning
111 * zero, each time a further match is found, ultimately setting errno to
112 * ENOENT, and returning -1 when no further match can be found. When all
113 * expected matches have been identified, _findclose() should be called,
114 * to release the resources allocated to the search data.
115 *
116 * The API comprises several variants of the _findfirst() and _findnext()
117 * functions, conforming generally to the usage model:
118 *
119 * intptr_t handle = _findfirst (filespec, &search_data );
120 * if (handle >= (intptr_t)(0)) do { process search_data;
121 * } while (_findnext (handle, &search_data));
122 *
123 * where "filespec" represents a char *, or a wchar_t * specification,
124 * (which may include wild cards), for a file name pattern to be matched,
125 * and "search_data" represents a variant of the structure:
126 */
127#define __struct_finddata_t(__fd_time_t, __fd_size_t) \
128{ unsigned attrib; /* Attributes, see constants above. */ \
129 __fd_time_t time_create; \
130 __fd_time_t time_access; /* always midnight local time */ \
131 __fd_time_t time_write; \
132 __fd_size_t size; \
133 __fd_name_t name[FILENAME_MAX]; /* may include spaces. */ \
134}
135
136/* Time type and file size variations for __struct_finddata_t apply, for the
137 * various functions comprising the file name search API, as tabulated below:
138 *
139 * Note: this is a reproduction of reference data as published in the MSDN
140 * online documentation for the file name search API; it applies, specifically,
141 * to the implementation of this API in the non-free run-time library versions
142 * from MSVCR80.DLL onwards, (i.e. when __MSVCRT_VERSION__ is defined, and is
143 * assigned a value >= 0x800). When linking to the freely available MSVCRT.DLL
144 * runtime, (__MSVCRT_VERSION__ should not be defined), or any earlier version
145 * of the non-free run-time, the _USE_32BIT_TIME_T feature test is irrelevant;
146 * the information presented in this table should be interpreted as if this
147 * feature is always implicitly enabled.
148 *
149 * Functions _USE_32BIT_TIME_T defined? __fd_time_t __fd_size_t
150 *
151 * _findfirst(), Not defined 64-bit 32-bit
152 * _wfindfirst()
153 * _findfirst(), Defined 32-bit 32-bit
154 * _wfindfirst()
155 *
156 * _findfirst32(), Not affected by the macro 32-bit 32-bit
157 * _wfindfirst32() definition
158 *
159 * _findfirst64(), Not affected by the macro 64-bit 64-bit
160 * _wfindfirst64() definition
161 *
162 * _findfirsti64(), Not defined 64-bit 64-bit
163 * _wfindfirsti64()
164 * _findfirsti64(), Defined 32-bit 64-bit
165 * _wfindfirsti64()
166 *
167 * _findfirst32i64(), Not affected by the macro 32-bit 64-bit
168 * _wfindfirst32i64() definition
169 *
170 * _findfirst64i32(), Not affected by the macro 64-bit 32-bit
171 * _wfindfirst64i32() definition
172 *
173 */
174_BEGIN_C_DECLS
175
176#ifdef _IO_H
177#define __fd_name_t char
178
179/* The most universally available variants of the file name search
180 * API employ either a generic representation of the related data, or
181 * a variant in which the time stamps are represented generically, but
182 * the file size is explicitly expressed as a 64-bit value.
183 */
184struct _finddata_t __struct_finddata_t (time_t, _fsize_t);
185struct _finddatai64_t __struct_finddata_t (time_t, __int64);
186
187/* Functions to manipulate data in either of these representations are
188 * provided, as physical entities, in ALL versions of MSVCRT.DLL, and
189 * in the non-free variants predating MSVCR80.DLL; (each such physical
190 * function implementation interprets "generic" as 32-bit for both the
191 * time_t and _fsize_t data fields). From MSVCR80.DLL onward, there is
192 * no physical implementation of these functions; they are emulated by
193 * inline replacements (implemented below), which introduce ambiguity
194 * in the interpretation of "generic", (noted as applicable): thus...
195 */
196#if __MSVCRT_VERSION__ < __MSVCR80_DLL
197/* ...these physical function APIs are declared only when it is NOT
198 * specified that MSVCR80.DLL or later is to be used.
199 */
200_CRTIMP __cdecl __MINGW_NOTHROW
201intptr_t _findfirst (const char *, struct _finddata_t *);
202
203_CRTIMP __cdecl __MINGW_NOTHROW
204int _findnext (intptr_t, struct _finddata_t *);
205
206_CRTIMP __cdecl __MINGW_NOTHROW
207intptr_t _findfirsti64 (const char *, struct _finddatai64_t *);
208
209_CRTIMP __cdecl __MINGW_NOTHROW
210int _findnexti64 (intptr_t, struct _finddatai64_t *);
211
212#endif /* __MSVCRT_VERSION__ < __MSVCR80_DLL */
213
214#if _WIN32_WINNT >= _WIN32_WINNT_WIN2K || __MSVCRT_VERSION__ >= __MSVCR61_DLL
215/* The Win2K release of MSVCRT.DLL added a third variant of the API,
216 * which had originally been introduced in MSVCR61.DLL; this variant
217 * uses a data representation having both 64-bit time stamp values,
218 * and 64-bit file size values. (Note that there was no explictly
219 * all 32-bit variant added at this point in the evolution of the
220 * API; had there been, it would have been identically equivalent
221 * to the original generic _findfirst()/_findnext() implementation).
222 */
223struct __finddata64_t __struct_finddata_t (__time64_t, __int64);
224
225_CRTIMP __cdecl __MINGW_NOTHROW
226intptr_t _findfirst64 (const char *, struct __finddata64_t *);
227
228_CRTIMP __cdecl __MINGW_NOTHROW
229int _findnext64 (intptr_t, struct __finddata64_t *);
230
231#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
232/* MSVCR80.DLL introduced three new data structures, with explicitly
233 * sized elements; in the order specified below, the first and second
234 * of these three are identically equivalent to the representations of
235 * struct _finddata_t, and struct _finddatai64_t, as they are required
236 * to be implemented to match the implementations of the corresponding
237 * functions in ALL versions of MSVCRT.DLL, whereas the third has no
238 * counterpart, in ANY version of MSVCRT.DLL.
239 */
240struct _finddata32_t __struct_finddata_t (__time32_t, __int32);
241struct _finddata32i64_t __struct_finddata_t (__time32_t, __int64);
242struct _finddata64i32_t __struct_finddata_t (__time64_t, __int32);
243
244/* The actual functions implemented in MSVCR80.DLL, and its derivatives,
245 * corresponding to each of these three data structures are:
246 */
247_CRTIMP __cdecl __MINGW_NOTHROW
248intptr_t _findfirst32 (const char *, struct _finddata32_t *);
249
250_CRTIMP __cdecl __MINGW_NOTHROW
251int _findnext32 (intptr_t, struct _finddata32_t *);
252
253_CRTIMP __cdecl __MINGW_NOTHROW
254intptr_t _findfirst32i64 (const char *, struct _finddata32i64_t *);
255
256_CRTIMP __cdecl __MINGW_NOTHROW
257int _findnext32i64 (intptr_t, struct _finddata32i64_t *);
258
259_CRTIMP __cdecl __MINGW_NOTHROW
260intptr_t _findfirst64i32 (const char *, struct _finddata64i32_t *);
261
262_CRTIMP __cdecl __MINGW_NOTHROW
263int _findnext64i32 (intptr_t, struct _finddata64i32_t *);
264
265/* Since MSVCR80.DLL, and its later derivatives, provide no physical
266 * implementations of the original file name search API functions, we
267 * must emulate them, (as Microsoft do), by providing replacements in
268 * the form of inline functions; in doing so, we also need to contend
269 * with the insane ambiguity of Microsoft's _USE_32BIT_TIME_T feature
270 * test; thus...
271 */
272#if defined _USE_32BIT_TIME_T
273/* ...when the user has defined the _USE_32BIT_TIME_T macro, we provide
274 * inline implementations which remain fully compatible with the actual
275 * functions, as provided by MSVCRT.DLL; (note that we do not provide
276 * __JMPSTUB__ or __LIBIMPL__ references here, since we have no basis
277 * for a rational choice between ambiguous alternatives).
278 */
279__CRT_ALIAS __cdecl __MINGW_NOTHROW
280intptr_t _findfirst (const char *__filespec, struct _finddata_t *__search)
281{ return _findfirst32 (__filespec, (struct _finddata32_t *)(__search)); }
282
283__CRT_ALIAS __cdecl __MINGW_NOTHROW
284int _findnext (intptr_t __handle, struct _finddata_t *__search)
285{ return _findnext32 (__handle, (struct _finddata32_t *)(__search)); }
286
287__CRT_ALIAS __cdecl __MINGW_NOTHROW
288intptr_t _findfirsti64 (const char *__filespec, struct _finddatai64_t *__search)
289{ return _findfirst32i64 (__filespec, (struct _finddata32i64_t *)(__search)); }
290
291__CRT_ALIAS __cdecl __MINGW_NOTHROW
292int _findnexti64 (intptr_t __handle, struct _finddatai64_t *__search)
293{ return _findnext32i64 (__handle, (struct _finddata32i64_t *)(__search)); }
294
295#else /* !_USE_32BIT_TIME_T */
296/* ...but, when the user has NOT defined _USE_32BIT_TIME_T, we emulate
297 * the brain damaged default behaviour of Microsoft's own SDKs. This
298 * accommodates an extended range of valid time stamp values, but it
299 * utterly destroys compatibility with MSVCRT.DLL!
300 */
301__CRT_ALIAS __cdecl __MINGW_NOTHROW
302intptr_t _findfirst (const char *__filespec, struct _finddata_t *__search)
303{ return _findfirst64i32 (__filespec, (struct _finddata64i32_t *)(__search)); }
304
305__CRT_ALIAS __cdecl __MINGW_NOTHROW
306int _findnext (intptr_t __handle, struct _finddata_t *__search)
307{ return _findnext64i32 (__handle, (struct _finddata64i32_t *)(__search)); }
308
309__CRT_ALIAS __cdecl __MINGW_NOTHROW
310intptr_t _findfirsti64 (const char *__filespec, struct _finddatai64_t *__search)
311{ return _findfirst64 (__filespec, (struct __finddata64_t *)(__search)); }
312
313__CRT_ALIAS __cdecl __MINGW_NOTHROW
314int _findnexti64 (intptr_t __handle, struct _finddatai64_t *__search)
315{ return _findnext64 (__handle, (struct __finddata64_t *)(__search)); }
316
317#endif /* !_USE_32BIT_TIME_T */
318#endif /* __MSVCRT_VERSION__ >= __MSVCR80_DLL */
319#endif /* >= WIN2K || >= MSVCR61.DLL */
320
321#undef __fd_name_t
322#endif /* _IO_H */
323
324#if ! (defined _IO_H && defined _WCHAR_H)
325/* Wide character file name analogue of the file name search API;
326 * declared both here, in <io.h>, and via selective inclusion from
327 * <wchar.h>, it mirrors all aspects of the preceding API declarations,
328 * except that all file names are expressed as wchar_t.
329 */
330#define __fd_name_t wchar_t
331
332/* Thus, the original API comprised this pair of generically specified
333 * data structures...
334 */
335struct _wfinddata_t __struct_finddata_t (time_t, _fsize_t);
336struct _wfinddatai64_t __struct_finddata_t (time_t, __int64);
337
338#if __MSVCRT_VERSION__ < __MSVCR80_DLL
339/* ...with corresponding functions to manipulate them; once again, there
340 * is no physical implementation of these in MSVCR80.DLL or later, so we
341 * declare them only when it is NOT specified that one of these run-time
342 * library versions is to be used.
343 */
344_CRTIMP __cdecl __MINGW_NOTHROW
345intptr_t _wfindfirst (const wchar_t *, struct _wfinddata_t *);
346
347_CRTIMP __cdecl __MINGW_NOTHROW
348int _wfindnext (intptr_t, struct _wfinddata_t *);
349
350_CRTIMP __cdecl __MINGW_NOTHROW
351intptr_t _wfindfirsti64 (const wchar_t *, struct _wfinddatai64_t *);
352
353_CRTIMP __cdecl __MINGW_NOTHROW
354int _wfindnexti64 (intptr_t, struct _wfinddatai64_t *);
355
356#endif /* __MSVCRT_VERSION__ < __MSVCR80_DLL */
357
358#if _WIN32_WINNT >= _WIN32_WINNT_WIN2K || __MSVCRT_VERSION__ >= __MSVCR61_DLL
359/* Win2K also added an all-64-bit variant of the _wfinddata API to
360 * MSVCRT.DLL, after it originally appeared in MSVCR61.DLL.
361 */
362struct __wfinddata64_t __struct_finddata_t (__time64_t, __int64);
363
364_CRTIMP __cdecl __MINGW_NOTHROW
365intptr_t _wfindfirst64 (const wchar_t *, struct __wfinddata64_t *);
366
367_CRTIMP __cdecl __MINGW_NOTHROW
368int _wfindnext64 (intptr_t, struct __wfinddata64_t *);
369
370#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
371/* MSVCR80.DLL introduced a further three variants, which remain
372 * exclusive to it and its later derivatives; none of these are
373 * available in any version of MSVCRT.DLL.
374 */
375struct __wfinddata32_t __struct_finddata_t (__time32_t, __int32);
376struct _wfinddata32i64_t __struct_finddata_t (__time32_t, __int64);
377struct _wfinddata64i32_t __struct_finddata_t (__time64_t, __int32);
378
379_CRTIMP __cdecl __MINGW_NOTHROW
380intptr_t _wfindfirst32 (const wchar_t *, struct __wfinddata32_t *);
381
382_CRTIMP __cdecl __MINGW_NOTHROW
383int _wfindnext32 (intptr_t, struct __wfinddata32_t *);
384
385_CRTIMP __cdecl __MINGW_NOTHROW
386intptr_t _wfindfirst32i64 (const wchar_t *, struct _wfinddata32i64_t *);
387
388_CRTIMP __cdecl __MINGW_NOTHROW
389int _wfindnext32i64 (intptr_t, struct _wfinddata32i64_t *);
390
391_CRTIMP __cdecl __MINGW_NOTHROW
392intptr_t _wfindfirst64i32 (const wchar_t *, struct _wfinddata64i32_t *);
393
394_CRTIMP __cdecl __MINGW_NOTHROW
395int _wfindnext64i32 (intptr_t, struct _wfinddata64i32_t *);
396
397/* Once again, the variants of this API with generic time_t data
398 * fields are NOT supported by any physical function implementation
399 * in MSVCR80.DLL and later, so must be emulated; (again, we do not
400 * provide any __JMPSTUB__ or __LIBIMPL__ references).
401 */
402#ifdef _USE_32BIT_TIME_T
403/* First, we provide inline implementations which retain compatibility
404 * with the physical implementations in MSVCRT.DLL; they require the
405 * user to define the _USE_32BIT_TIME_T feature test macro...
406 */
407__CRT_ALIAS __cdecl __MINGW_NOTHROW
408intptr_t _wfindfirst (const wchar_t *__filespec, struct _wfinddata_t *__search)
409{ return _wfindfirst32 (__filespec, (struct __wfinddata32_t *)(__search)); }
410
411__CRT_ALIAS __cdecl __MINGW_NOTHROW
412int _wfindnext (intptr_t __handle, struct _wfinddata_t *__search)
413{ return _wfindnext32 (__handle, (struct __wfinddata32_t *)(__search)); }
414
415__CRT_ALIAS __cdecl __MINGW_NOTHROW
416intptr_t _wfindfirsti64 (const wchar_t *__filespec, struct _wfinddatai64_t *__search)
417{ return _wfindfirst32i64 (__filespec, (struct _wfinddata32i64_t *)(__search)); }
418
419__CRT_ALIAS __cdecl __MINGW_NOTHROW
420int _wfindnexti64 (intptr_t __handle, struct _wfinddatai64_t *__search)
421{ return _wfindnext32i64 (__handle, (struct _wfinddata32i64_t *)(__search)); }
422
423#else /* !_USE_32BIT_TIME_T */
424/* ...whereas the brain damaged Microsoft defaults, which apply when
425 * _USE_32BIT_TIME_T is not defined, break MSVCRT.DLL compatibility.
426 */
427__CRT_ALIAS __cdecl __MINGW_NOTHROW
428intptr_t _wfindfirst (const wchar_t *__filespec, struct _wfinddata_t *__search)
429{ return _wfindfirst64i32 (__filespec, (struct _wfinddata64i32_t *)(__search)); }
430
431__CRT_ALIAS __cdecl __MINGW_NOTHROW
432int _wfindnext (intptr_t __handle, struct _wfinddata_t *__search)
433{ return _wfindnext64i32 (__handle, (struct _wfinddata64i32_t *)(__search)); }
434
435__CRT_ALIAS __cdecl __MINGW_NOTHROW
436intptr_t _wfindfirsti64 (const wchar_t *__filespec, struct _wfinddatai64_t *__search)
437{ return _wfindfirst64 (__filespec, (struct __wfinddata64_t *)(__search)); }
438
439__CRT_ALIAS __cdecl __MINGW_NOTHROW
440int _wfindnexti64 (intptr_t __handle, struct _wfinddatai64_t *__search)
441{ return _wfindnext64 (__handle, (struct __wfinddata64_t *)(__search)); }
442
443#endif /* !_USE_32BIT_TIME_T */
444#endif /* __MSVCRT_VERSION__ >= MSVCR80.DLL */
445#endif /* >= _WIN2K || >= MSVCR61.DLL */
446
447#undef __fd_name_t
448#endif /* ! (_IO_H && _WCHAR_H) */
449
450/* We have no further use for the __struct_finddata_t macro; delete it!
451 */
452#undef __struct_finddata_t
453
454/* MSDN documents that <io.h> must be included to get a prototype for
455 * _findclose(), which kind of negates the usefulness of declaring the
456 * wchar_t variants of the file name search API in <wchar.h>; mitigate
457 * this anomaly, by declaring _findclose() such that either <io.h> or
458 * <wchar.h> will provide it.
459 */
460_CRTIMP __cdecl __MINGW_NOTHROW int _findclose (intptr_t);
461
462#ifdef _IO_H
463/* The following declarations are to be exposed only when <io.h> is
464 * included directly.
465 */
466_CRTIMP __cdecl __MINGW_NOTHROW int _chdir (const char *);
467_CRTIMP __cdecl __MINGW_NOTHROW char *_getcwd (char *, int);
468_CRTIMP __cdecl __MINGW_NOTHROW int _mkdir (const char *);
469_CRTIMP __cdecl __MINGW_NOTHROW char *_mktemp (char *);
470_CRTIMP __cdecl __MINGW_NOTHROW int _rmdir (const char *);
471_CRTIMP __cdecl __MINGW_NOTHROW int _chmod (const char *, int);
472
473#ifdef __MSVCRT__
474_CRTIMP __cdecl __MINGW_NOTHROW __int64 _filelengthi64 (int);
475_CRTIMP __cdecl __MINGW_NOTHROW __int64 _lseeki64 (int, __int64, int);
476_CRTIMP __cdecl __MINGW_NOTHROW __int64 _telli64 (int);
477
478#ifndef __NO_MINGW_LFS
479__CRT_INLINE __off64_t lseek64 (int, __off64_t, int);
480__CRT_INLINE __JMPSTUB__(( FUNCTION = lseek64, REMAPPED = _lseeki64 ))
481__off64_t lseek64 (int fd, __off64_t offset, int whence)
482{ return _lseeki64 (fd, (__int64)(offset), whence); }
483#endif
484
485#endif /* __MSVCRT__ */
486
487#ifndef _NO_OLDNAMES
488
489#ifndef _UWIN
490_CRTIMP __cdecl __MINGW_NOTHROW int chdir (const char *);
491_CRTIMP __cdecl __MINGW_NOTHROW char *getcwd (char *, int);
492_CRTIMP __cdecl __MINGW_NOTHROW int mkdir (const char *);
493_CRTIMP __cdecl __MINGW_NOTHROW char *mktemp (char *);
494_CRTIMP __cdecl __MINGW_NOTHROW int rmdir (const char *);
495_CRTIMP __cdecl __MINGW_NOTHROW int chmod (const char *, int);
496#endif /* _UWIN */
497
498#endif /* !_NO_OLDNAMES */
499#endif /* _IO_H */
500
501_END_C_DECLS
502
503#endif /* ! RC_INVOKED */
504
505#ifdef _IO_H
506/* Still applicable only when <io.h> is included directly, but we also
507 * allow the resource compiler to see these.
508 *
509 * TODO: Maximum number of open handles has not been tested; we just set
510 * it the same as FOPEN_MAX.
511 */
512#define HANDLE_MAX FOPEN_MAX
513
514/* Some defines for _access() mode checking: (Microsoft doesn't define
515 * them, but it doesn't seem to hurt to add them ... or perhaps it does
516 * hurt; on newer versions of MSVCRT.DLL, an access mode of 1 may raise
517 * an invalid parameter error!
518 */
519#define F_OK 0 /* Check for file existence */
520#define X_OK 1 /* MS access() doesn't check for execute permission. */
521#define W_OK 2 /* Check for write permission */
522#define R_OK 4 /* Check for read permission */
523#endif /* _IO_H */
524
525#ifndef RC_INVOKED
526
527_BEGIN_C_DECLS
528
529#ifdef _IO_H
530/* Again, specific to <io.h>, but not applicable to resources.
531 */
532_CRTIMP __cdecl __MINGW_NOTHROW int _access (const char *, int);
533_CRTIMP __cdecl __MINGW_NOTHROW int _chsize (int, long);
534_CRTIMP __cdecl __MINGW_NOTHROW int _close (int);
535_CRTIMP __cdecl __MINGW_NOTHROW int _commit (int);
536
537/* NOTE: The only significant permissions bit appears to be
538 * bit 7 (0x80), the "owner write permission" bit (on FAT).
539 */
540_CRTIMP __cdecl __MINGW_NOTHROW int _creat (const char *, int);
541
542_CRTIMP __cdecl __MINGW_NOTHROW int _dup (int);
543_CRTIMP __cdecl __MINGW_NOTHROW int _dup2 (int, int);
544_CRTIMP __cdecl __MINGW_NOTHROW long _filelength (int);
545_CRTIMP __cdecl __MINGW_NOTHROW long _get_osfhandle (int);
546_CRTIMP __cdecl __MINGW_NOTHROW int _isatty (int);
547
548#ifndef _STREAM_COMPAT
549/* In a very odd turn of events this function is excluded from those
550 * files which define _STREAM_COMPAT. This is required in order to
551 * build GNU libio because of a conflict with _eof in streambuf.h
552 * line 107. Actually I might just be able to change the name of
553 * the enum member in streambuf.h ... we'll see. TODO
554 */
555_CRTIMP __cdecl __MINGW_NOTHROW int _eof (int);
556#endif
557
558/* Locking files: attribute constants are defined in <sys/locking.h>,
559 * which users are expected to include.
560 */
561_CRTIMP __cdecl __MINGW_NOTHROW int _locking (int, int, long);
562
563_CRTIMP __cdecl __MINGW_NOTHROW long _lseek (int, long, int);
564
565/* Opening files, (or streams); manifest constants for construction of
566 * the mode flags are defined in <fctl.h>, which users are expected to
567 * include. The "optional" third argument is an unsigned int; it is
568 * REQUIRED, when creating a new file, to specify the permissions to
569 * apply when said file is released by the creating process.
570 */
571_CRTIMP __cdecl __MINGW_NOTHROW int _open (const char *, int, ...);
572
573_CRTIMP __cdecl __MINGW_NOTHROW int _open_osfhandle (intptr_t, int);
574_CRTIMP __cdecl __MINGW_NOTHROW int _pipe (int *, unsigned int, int);
575_CRTIMP __cdecl __MINGW_NOTHROW int _read (int, void *, unsigned int);
576_CRTIMP __cdecl __MINGW_NOTHROW int _setmode (int, int);
577
578/* Microsoft declares remove() & rename(), (but not their wchar_t
579 * counterparts), in <io.h> as well as in <stdio.h>; these should be
580 * consistent with <stdio.h>, but we trust the compiler to alert us
581 * (eventually) if not.
582 */
583_CRTIMP __cdecl __MINGW_NOTHROW int remove (const char *);
584_CRTIMP __cdecl __MINGW_NOTHROW int rename (const char *, const char *);
585
586/* Open files with specified sharing attributes; manifest constants
587 * for constructing the sharing mode argument are in <share.h>, which
588 * users must include. The optional fourth argument is an unsigned
589 * int, specifing permissions to apply after closing a new file.
590 */
591_CRTIMP __cdecl __MINGW_NOTHROW int _sopen (const char *, int, int, ...);
592
593_CRTIMP __cdecl __MINGW_NOTHROW long _tell (int);
594
595/* FIXME: POSIX wants umask() in <sys/stat.h>, and, although vague,
596 * Microsoft may agree; we declare it here as well!
597 */
598_CRTIMP __cdecl __MINGW_NOTHROW int _umask (int);
599_CRTIMP __cdecl __MINGW_NOTHROW int _unlink (const char *);
600_CRTIMP __cdecl __MINGW_NOTHROW int _write (int, const void *, unsigned int);
601#endif /* _IO_H */
602
603#if defined __MSVCRT__ && ! (defined _IO_H && defined _WCHAR_H)
604/* These wchar_t functions are made available for selective inclusion
605 * by <wchar.h>, in addition to direct inclusion of <io.h>, but they
606 * are only supported by MSVCRT.DLL and derivatives; they don't exist
607 * in CRTDLL.DLL. Furthermore, if both _IO_H and _WCHAR_H have been
608 * defined, by the time we get here, then this must be direct <io.h>
609 * inclusion, and we've already declared these by prior inclusion of
610 * <wchar.h>; there is no need to declare them again.
611 */
612_CRTIMP __cdecl __MINGW_NOTHROW int _waccess (const wchar_t *, int);
613_CRTIMP __cdecl __MINGW_NOTHROW int _wchmod (const wchar_t *, int);
614_CRTIMP __cdecl __MINGW_NOTHROW int _wcreat (const wchar_t *, int);
615_CRTIMP __cdecl __MINGW_NOTHROW int _wunlink (const wchar_t *);
616_CRTIMP __cdecl __MINGW_NOTHROW int _wopen (const wchar_t *, int, ...);
617_CRTIMP __cdecl __MINGW_NOTHROW int _wsopen (const wchar_t *, int, int, ...);
618_CRTIMP __cdecl __MINGW_NOTHROW wchar_t *_wmktemp (wchar_t *);
619#endif /* __MSVCRT__ && ! (_IO_H && _WCHAR_H) */
620
621#if defined _IO_H && ! defined _NO_OLDNAMES
622/* Non-underscored versions of non-ANSI functions to improve portability;
623 * these are implemented in libmoldname.a, and once again are declared
624 * only when <io.h> is included directly.
625 */
626#ifndef _UWIN
627_CRTIMP __cdecl __MINGW_NOTHROW int access (const char*, int);
628_CRTIMP __cdecl __MINGW_NOTHROW int chsize (int, long );
629_CRTIMP __cdecl __MINGW_NOTHROW int close (int);
630_CRTIMP __cdecl __MINGW_NOTHROW int creat (const char*, int);
631_CRTIMP __cdecl __MINGW_NOTHROW int dup (int);
632_CRTIMP __cdecl __MINGW_NOTHROW int dup2 (int, int);
633_CRTIMP __cdecl __MINGW_NOTHROW int eof (int);
634_CRTIMP __cdecl __MINGW_NOTHROW long filelength (int);
635_CRTIMP __cdecl __MINGW_NOTHROW int isatty (int);
636_CRTIMP __cdecl __MINGW_NOTHROW long lseek (int, long, int);
637_CRTIMP __cdecl __MINGW_NOTHROW int open (const char*, int, ...);
638_CRTIMP __cdecl __MINGW_NOTHROW int read (int, void*, unsigned int);
639_CRTIMP __cdecl __MINGW_NOTHROW int setmode (int, int);
640_CRTIMP __cdecl __MINGW_NOTHROW int sopen (const char*, int, int, ...);
641_CRTIMP __cdecl __MINGW_NOTHROW long tell (int);
642_CRTIMP __cdecl __MINGW_NOTHROW int umask (int);
643_CRTIMP __cdecl __MINGW_NOTHROW int unlink (const char*);
644_CRTIMP __cdecl __MINGW_NOTHROW int write (int, const void*, unsigned int);
645#endif /* !_UWIN */
646
647#ifdef __USE_MINGW_ACCESS
648/* Old versions of MSVCRT.DLL's access() just ignored X_OK, while the
649 * version shipped with Vista fails; this inline implementation of the
650 * portably named access() function protects against such failure.
651 */
652#define access(__fname,__mode) __mingw_access (__fname, __mode)
653static __inline__ int __mingw_access (const char* __fname, int __mode)
654 { return _access (__fname, __mode & ~X_OK); }
655#endif /* _USE_MINGW_ACCESS */
656
657#if 0
658/* FIXME:
659 * Wide character versions: may also be declared in <wchar.h>.
660 * Where do these live? Not in libmoldname.a nor in libmsvcrt.a;
661 * do they exist at all?
662 */
663int waccess(const wchar_t *, int);
664int wchmod(const wchar_t *, int);
665int wcreat(const wchar_t *, int);
666long wfindfirst(wchar_t *, struct _wfinddata_t *);
667int wfindnext(long, struct _wfinddata_t *);
668int wunlink(const wchar_t *);
669int wrename(const wchar_t *, const wchar_t *);
670int wopen(const wchar_t *, int, ...);
671int wsopen(const wchar_t *, int, int, ...);
672wchar_t * wmktemp(wchar_t *);
673#endif
674
675#endif /* !_NO_OLDNAMES */
676
677_END_C_DECLS
678
679#endif /* ! RC_INVOKED */
680#endif /* !_IO_H: $RCSfile: io.h,v $: end of file */
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