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CodeBlocksPortable/MinGW/include/io.h

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/*
* io.h
*
* System level I/O functions and types.
*
* $Id: io.h,v 82e816df4c9b 2016/10/30 18:40:10 keithmarshall $
*
* Written by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
* Copyright (C) 1997-2004, 2007, 2009, 2010, 2014-2016, MinGW.org Project.
*
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice, this permission notice, and the following
* disclaimer shall be included in all copies or substantial portions of
* the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*
* NOTE: The file manipulation functions provided by Microsoft seem to
* work with either slash (/) or backslash (\) as the directory separator;
* (this is consistent with Microsoft's own documentation, on MSDN).
*
*/
#ifndef _IO_H
#pragma GCC system_header
/* Defer definition of the _IO_H multiple inclusion guard, to allow
* for selective inclusion by <wchar.h>, (in which case we should
* NOT define it).
*/
#ifndef __WCHAR_H_SOURCED__
#define _IO_H
/* All MinGW headers must include <_mingw.h>; we may do it here,
* assuming that <wchar.h> will have already take care to do so in
* the selective inclusion case.
*/
#include <_mingw.h>
/* We also need time_t, and off_t, (and their variants); although
* it gives us more than we really need, this will provide them...
*/
#include <sys/types.h>
#endif /* !__WCHAR_H_SOURCED__ */
/* This will give us intptr_t, which we need in ALL cases, whether
* including <io.h> directly, or selectively via <wchar.h>; (note: we
* use the #include "..." form here, to ensure that we read the type
* definition directly from the stdint.h header located in the same
* directory as this <io.h> file).
*/
#define __need_intptr_t
#include "stdint.h"
/* Attributes of files as returned by _findfirst() et al. MSDN is not
* explicit about whether or not these should be defined when including
* <wchar.h>, but since they complement the _wfindfirst() API, which is
* declared there, it seems logical to make them visible in all cases
* of <io.h> inclusion.
*/
#define _A_NORMAL 0x00000000
#define _A_RDONLY 0x00000001
#define _A_HIDDEN 0x00000002
#define _A_SYSTEM 0x00000004
#define _A_VOLID 0x00000008
#define _A_SUBDIR 0x00000010
#define _A_ARCH 0x00000020
#ifndef RC_INVOKED
/* The maximum length of a file name. It may be better to use the Windows'
* GetVolumeInformation() function in preference to this constant, but hey,
* this works! In any case, we use this manifest constant when we declare
* the _findfirst() API, so its definition must be visible in all places
* where this, or any of its variants, is declared.
*
* Note that <stdio.h> also defines this, but we don't guard it, so that
* the compiler has a chance to catch inconsistencies.
*/
#define FILENAME_MAX (260)
/* We must define _fsize_t, but some compilers (including GCC prior to
* version 4.0), may choke if we try to do so more than once...
*/
#if ! (defined _IO_H && defined _WCHAR_H) || defined __STRICT_ANSI__
/* ...so DO NOT define it during direct <io.h> inclusion, (i.e. _IO_H
* is defined), if <wchar.h> has already caused it to be defined, (i.e.
* _WCHAR_H is ALSO defined, but __STRICT_ANSI__ is NOT).
*/
typedef unsigned long _fsize_t;
#endif /* ! (_IO_H && _WCHAR_H) */
/* Functions for searching for files: _findfirst() sets errno to ENOENT,
* and returns -1 if no match is found; otherwise it returns a handle to
* be used in _findnext() and _findclose() calls. _findnext() may then be
* used to identify further matches; it updates the search data, returning
* zero, each time a further match is found, ultimately setting errno to
* ENOENT, and returning -1 when no further match can be found. When all
* expected matches have been identified, _findclose() should be called,
* to release the resources allocated to the search data.
*
* The API comprises several variants of the _findfirst() and _findnext()
* functions, conforming generally to the usage model:
*
* intptr_t handle = _findfirst (filespec, &search_data );
* if (handle >= (intptr_t)(0)) do { process search_data;
* } while (_findnext (handle, &search_data));
*
* where "filespec" represents a char *, or a wchar_t * specification,
* (which may include wild cards), for a file name pattern to be matched,
* and "search_data" represents a variant of the structure:
*/
#define __struct_finddata_t(__fd_time_t, __fd_size_t) \
{ unsigned attrib; /* Attributes, see constants above. */ \
__fd_time_t time_create; \
__fd_time_t time_access; /* always midnight local time */ \
__fd_time_t time_write; \
__fd_size_t size; \
__fd_name_t name[FILENAME_MAX]; /* may include spaces. */ \
}
/* Time type and file size variations for __struct_finddata_t apply, for the
* various functions comprising the file name search API, as tabulated below:
*
* Note: this is a reproduction of reference data as published in the MSDN
* online documentation for the file name search API; it applies, specifically,
* to the implementation of this API in the non-free run-time library versions
* from MSVCR80.DLL onwards, (i.e. when __MSVCRT_VERSION__ is defined, and is
* assigned a value >= 0x800). When linking to the freely available MSVCRT.DLL
* runtime, (__MSVCRT_VERSION__ should not be defined), or any earlier version
* of the non-free run-time, the _USE_32BIT_TIME_T feature test is irrelevant;
* the information presented in this table should be interpreted as if this
* feature is always implicitly enabled.
*
* Functions _USE_32BIT_TIME_T defined? __fd_time_t __fd_size_t
*
* _findfirst(), Not defined 64-bit 32-bit
* _wfindfirst()
* _findfirst(), Defined 32-bit 32-bit
* _wfindfirst()
*
* _findfirst32(), Not affected by the macro 32-bit 32-bit
* _wfindfirst32() definition
*
* _findfirst64(), Not affected by the macro 64-bit 64-bit
* _wfindfirst64() definition
*
* _findfirsti64(), Not defined 64-bit 64-bit
* _wfindfirsti64()
* _findfirsti64(), Defined 32-bit 64-bit
* _wfindfirsti64()
*
* _findfirst32i64(), Not affected by the macro 32-bit 64-bit
* _wfindfirst32i64() definition
*
* _findfirst64i32(), Not affected by the macro 64-bit 32-bit
* _wfindfirst64i32() definition
*
*/
_BEGIN_C_DECLS
#ifdef _IO_H
#define __fd_name_t char
/* The most universally available variants of the file name search
* API employ either a generic representation of the related data, or
* a variant in which the time stamps are represented generically, but
* the file size is explicitly expressed as a 64-bit value.
*/
struct _finddata_t __struct_finddata_t (time_t, _fsize_t);
struct _finddatai64_t __struct_finddata_t (time_t, __int64);
/* Functions to manipulate data in either of these representations are
* provided, as physical entities, in ALL versions of MSVCRT.DLL, and
* in the non-free variants predating MSVCR80.DLL; (each such physical
* function implementation interprets "generic" as 32-bit for both the
* time_t and _fsize_t data fields). From MSVCR80.DLL onward, there is
* no physical implementation of these functions; they are emulated by
* inline replacements (implemented below), which introduce ambiguity
* in the interpretation of "generic", (noted as applicable): thus...
*/
#if __MSVCRT_VERSION__ < __MSVCR80_DLL
/* ...these physical function APIs are declared only when it is NOT
* specified that MSVCR80.DLL or later is to be used.
*/
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _findfirst (const char *, struct _finddata_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _findnext (intptr_t, struct _finddata_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _findfirsti64 (const char *, struct _finddatai64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _findnexti64 (intptr_t, struct _finddatai64_t *);
#endif /* __MSVCRT_VERSION__ < __MSVCR80_DLL */
#if _WIN32_WINNT >= _WIN32_WINNT_WIN2K || __MSVCRT_VERSION__ >= __MSVCR61_DLL
/* The Win2K release of MSVCRT.DLL added a third variant of the API,
* which had originally been introduced in MSVCR61.DLL; this variant
* uses a data representation having both 64-bit time stamp values,
* and 64-bit file size values. (Note that there was no explictly
* all 32-bit variant added at this point in the evolution of the
* API; had there been, it would have been identically equivalent
* to the original generic _findfirst()/_findnext() implementation).
*/
struct __finddata64_t __struct_finddata_t (__time64_t, __int64);
/*
* Some MSDN documents, (particularly more recent documents), may
* inconsistently refer to this structural type by the anomalous
* name of _finddata64_t; support this anomaly.
*/
#define _finddata64_t __finddata64_t
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _findfirst64 (const char *, struct __finddata64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _findnext64 (intptr_t, struct __finddata64_t *);
#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
/* MSVCR80.DLL introduced three new data structures, with explicitly
* sized elements; in the order specified below, the first and second
* of these three are identically equivalent to the representations of
* struct _finddata_t, and struct _finddatai64_t, as they are required
* to be implemented to match the implementations of the corresponding
* functions in ALL versions of MSVCRT.DLL, whereas the third has no
* counterpart, in ANY version of MSVCRT.DLL.
*/
struct _finddata32_t __struct_finddata_t (__time32_t, __int32);
struct _finddata32i64_t __struct_finddata_t (__time32_t, __int64);
struct _finddata64i32_t __struct_finddata_t (__time64_t, __int32);
/* The actual functions implemented in MSVCR80.DLL, and its derivatives,
* corresponding to each of these three data structures are:
*/
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _findfirst32 (const char *, struct _finddata32_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _findnext32 (intptr_t, struct _finddata32_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _findfirst32i64 (const char *, struct _finddata32i64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _findnext32i64 (intptr_t, struct _finddata32i64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _findfirst64i32 (const char *, struct _finddata64i32_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _findnext64i32 (intptr_t, struct _finddata64i32_t *);
/* Since MSVCR80.DLL, and its later derivatives, provide no physical
* implementations of the original file name search API functions, we
* must emulate them, (as Microsoft do), by providing replacements in
* the form of inline functions; in doing so, we also need to contend
* with the insane ambiguity of Microsoft's _USE_32BIT_TIME_T feature
* test; thus...
*/
#if defined _USE_32BIT_TIME_T
/* ...when the user has defined the _USE_32BIT_TIME_T macro, we provide
* inline implementations which remain fully compatible with the actual
* functions, as provided by MSVCRT.DLL; (note that we do not provide
* __JMPSTUB__ or __LIBIMPL__ references here, since we have no basis
* for a rational choice between ambiguous alternatives).
*/
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _findfirst (const char *__filespec, struct _finddata_t *__search)
{ return _findfirst32 (__filespec, (struct _finddata32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _findnext (intptr_t __handle, struct _finddata_t *__search)
{ return _findnext32 (__handle, (struct _finddata32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _findfirsti64 (const char *__filespec, struct _finddatai64_t *__search)
{ return _findfirst32i64 (__filespec, (struct _finddata32i64_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _findnexti64 (intptr_t __handle, struct _finddatai64_t *__search)
{ return _findnext32i64 (__handle, (struct _finddata32i64_t *)(__search)); }
#else /* !_USE_32BIT_TIME_T */
/* ...but, when the user has NOT defined _USE_32BIT_TIME_T, we emulate
* the brain damaged default behaviour of Microsoft's own SDKs. This
* accommodates an extended range of valid time stamp values, but it
* utterly destroys compatibility with MSVCRT.DLL!
*/
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _findfirst (const char *__filespec, struct _finddata_t *__search)
{ return _findfirst64i32 (__filespec, (struct _finddata64i32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _findnext (intptr_t __handle, struct _finddata_t *__search)
{ return _findnext64i32 (__handle, (struct _finddata64i32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _findfirsti64 (const char *__filespec, struct _finddatai64_t *__search)
{ return _findfirst64 (__filespec, (struct __finddata64_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _findnexti64 (intptr_t __handle, struct _finddatai64_t *__search)
{ return _findnext64 (__handle, (struct __finddata64_t *)(__search)); }
#endif /* !_USE_32BIT_TIME_T */
#endif /* __MSVCRT_VERSION__ >= __MSVCR80_DLL */
#endif /* >= WIN2K || >= MSVCR61.DLL */
#undef __fd_name_t
#endif /* _IO_H */
#if ! (defined _IO_H && defined _WCHAR_H)
/* Wide character file name analogue of the file name search API;
* declared both here, in <io.h>, and via selective inclusion from
* <wchar.h>, it mirrors all aspects of the preceding API declarations,
* except that all file names are expressed as wchar_t.
*/
#define __fd_name_t wchar_t
/* Thus, the original API comprised this pair of generically specified
* data structures...
*/
struct _wfinddata_t __struct_finddata_t (time_t, _fsize_t);
struct _wfinddatai64_t __struct_finddata_t (time_t, __int64);
#if __MSVCRT_VERSION__ < __MSVCR80_DLL
/* ...with corresponding functions to manipulate them; once again, there
* is no physical implementation of these in MSVCR80.DLL or later, so we
* declare them only when it is NOT specified that one of these run-time
* library versions is to be used.
*/
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst (const wchar_t *, struct _wfinddata_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _wfindnext (intptr_t, struct _wfinddata_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _wfindfirsti64 (const wchar_t *, struct _wfinddatai64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _wfindnexti64 (intptr_t, struct _wfinddatai64_t *);
#endif /* __MSVCRT_VERSION__ < __MSVCR80_DLL */
#if _WIN32_WINNT >= _WIN32_WINNT_WIN2K || __MSVCRT_VERSION__ >= __MSVCR61_DLL
/* Win2K also added an all-64-bit variant of the _wfinddata API to
* MSVCRT.DLL, after it originally appeared in MSVCR61.DLL.
*/
struct __wfinddata64_t __struct_finddata_t (__time64_t, __int64);
/*
* As in the case of the __finddata64_t structure, some MSDN
* documents, (particularly more recent documents), may refer
* to __wfinddata64_t by the inconsistently anomalous name of
* _wfinddata64_t; also support this anomaly.
*/
#define _wfinddata64_t __wfinddata64_t
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst64 (const wchar_t *, struct __wfinddata64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _wfindnext64 (intptr_t, struct __wfinddata64_t *);
#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
/* MSVCR80.DLL introduced a further three variants, which remain
* exclusive to it and its later derivatives; none of these are
* available in any version of MSVCRT.DLL.
*/
struct _wfinddata32_t __struct_finddata_t (__time32_t, __int32);
struct _wfinddata32i64_t __struct_finddata_t (__time32_t, __int64);
struct _wfinddata64i32_t __struct_finddata_t (__time64_t, __int32);
/*
* As in the __finddata64_t vs. _finddata64_t, and __wfinddata64_t
* vs. _wfinddata64_t anomalous cases, there is at least one historic
* MSDN reference to a __wfinddata32_t structural type, in a context
* where _wfinddata32_t may be expected. In this case, it appears
* that __wfinddata32_t is the anomaly, and that it may be peculiar
* to the VS-2005 documentation; nevertheless, the corresponding
* definition is provided here, for the possible convenience of
* any user who may depend on it, (but please avoid it).
*/
#define __wfinddata32_t _wfinddata32_t
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst32 (const wchar_t *, struct _wfinddata32_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _wfindnext32 (intptr_t, struct _wfinddata32_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst32i64 (const wchar_t *, struct _wfinddata32i64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _wfindnext32i64 (intptr_t, struct _wfinddata32i64_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst64i32 (const wchar_t *, struct _wfinddata64i32_t *);
_CRTIMP __cdecl __MINGW_NOTHROW
int _wfindnext64i32 (intptr_t, struct _wfinddata64i32_t *);
/* Once again, the variants of this API with generic time_t data
* fields are NOT supported by any physical function implementation
* in MSVCR80.DLL and later, so must be emulated; (again, we do not
* provide any __JMPSTUB__ or __LIBIMPL__ references).
*/
#ifdef _USE_32BIT_TIME_T
/* First, we provide inline implementations which retain compatibility
* with the physical implementations in MSVCRT.DLL; they require the
* user to define the _USE_32BIT_TIME_T feature test macro...
*/
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst (const wchar_t *__filespec, struct _wfinddata_t *__search)
{ return _wfindfirst32 (__filespec, (struct _wfinddata32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _wfindnext (intptr_t __handle, struct _wfinddata_t *__search)
{ return _wfindnext32 (__handle, (struct _wfinddata32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _wfindfirsti64 (const wchar_t *__filespec, struct _wfinddatai64_t *__search)
{ return _wfindfirst32i64 (__filespec, (struct _wfinddata32i64_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _wfindnexti64 (intptr_t __handle, struct _wfinddatai64_t *__search)
{ return _wfindnext32i64 (__handle, (struct _wfinddata32i64_t *)(__search)); }
#else /* !_USE_32BIT_TIME_T */
/* ...whereas the brain damaged Microsoft defaults, which apply when
* _USE_32BIT_TIME_T is not defined, break MSVCRT.DLL compatibility.
*/
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _wfindfirst (const wchar_t *__filespec, struct _wfinddata_t *__search)
{ return _wfindfirst64i32 (__filespec, (struct _wfinddata64i32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _wfindnext (intptr_t __handle, struct _wfinddata_t *__search)
{ return _wfindnext64i32 (__handle, (struct _wfinddata64i32_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
intptr_t _wfindfirsti64 (const wchar_t *__filespec, struct _wfinddatai64_t *__search)
{ return _wfindfirst64 (__filespec, (struct __wfinddata64_t *)(__search)); }
__CRT_ALIAS __cdecl __MINGW_NOTHROW
int _wfindnexti64 (intptr_t __handle, struct _wfinddatai64_t *__search)
{ return _wfindnext64 (__handle, (struct __wfinddata64_t *)(__search)); }
#endif /* !_USE_32BIT_TIME_T */
#endif /* __MSVCRT_VERSION__ >= MSVCR80.DLL */
#endif /* >= _WIN2K || >= MSVCR61.DLL */
#undef __fd_name_t
#endif /* ! (_IO_H && _WCHAR_H) */
/* We have no further use for the __struct_finddata_t macro; delete it!
*/
#undef __struct_finddata_t
/* MSDN documents that <io.h> must be included to get a prototype for
* _findclose(), which kind of negates the usefulness of declaring the
* wchar_t variants of the file name search API in <wchar.h>; mitigate
* this anomaly, by declaring _findclose() such that either <io.h> or
* <wchar.h> will provide it.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _findclose (intptr_t);
#ifdef _IO_H
/* The following declarations are to be exposed only when <io.h> is
* included directly.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _chdir (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *_getcwd (char *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _mkdir (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *_mktemp (char *);
_CRTIMP __cdecl __MINGW_NOTHROW int _rmdir (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int _chmod (const char *, int);
#ifdef __MSVCRT__
_CRTIMP __cdecl __MINGW_NOTHROW __int64 _filelengthi64 (int);
_CRTIMP __cdecl __MINGW_NOTHROW __int64 _lseeki64 (int, __int64, int);
_CRTIMP __cdecl __MINGW_NOTHROW __int64 _telli64 (int);
#ifndef __NO_MINGW_LFS
__CRT_INLINE __off64_t lseek64 (int, __off64_t, int);
__CRT_INLINE __JMPSTUB__(( FUNCTION = lseek64, REMAPPED = _lseeki64 ))
__off64_t lseek64 (int fd, __off64_t offset, int whence)
{ return _lseeki64 (fd, (__int64)(offset), whence); }
#endif
#endif /* __MSVCRT__ */
#ifndef _NO_OLDNAMES
#ifndef _UWIN
_CRTIMP __cdecl __MINGW_NOTHROW int chdir (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *getcwd (char *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int mkdir (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *mktemp (char *);
_CRTIMP __cdecl __MINGW_NOTHROW int rmdir (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int chmod (const char *, int);
#endif /* _UWIN */
#endif /* !_NO_OLDNAMES */
#endif /* _IO_H */
_END_C_DECLS
#endif /* ! RC_INVOKED */
#ifdef _IO_H
/* Still applicable only when <io.h> is included directly, but we also
* allow the resource compiler to see these.
*
* TODO: Maximum number of open handles has not been tested; we just set
* it the same as FOPEN_MAX.
*/
#define HANDLE_MAX FOPEN_MAX
/* Some defines for _access() mode checking: (Microsoft doesn't define
* them, but it doesn't seem to hurt to add them ... or perhaps it does
* hurt; on newer versions of MSVCRT.DLL, an access mode of 1 may raise
* an invalid parameter error!
*/
#define F_OK 0 /* Check for file existence */
#define X_OK 1 /* MS access() doesn't check for execute permission. */
#define W_OK 2 /* Check for write permission */
#define R_OK 4 /* Check for read permission */
#endif /* _IO_H */
#ifndef RC_INVOKED
_BEGIN_C_DECLS
#ifdef _IO_H
/* Again, specific to <io.h>, but not applicable to resources.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _access (const char *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _chsize (int, long);
_CRTIMP __cdecl __MINGW_NOTHROW int _close (int);
_CRTIMP __cdecl __MINGW_NOTHROW int _commit (int);
/* NOTE: The only significant permissions bit appears to be
* bit 7 (0x80), the "owner write permission" bit (on FAT).
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _creat (const char *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _dup (int);
_CRTIMP __cdecl __MINGW_NOTHROW int _dup2 (int, int);
_CRTIMP __cdecl __MINGW_NOTHROW long _filelength (int);
_CRTIMP __cdecl __MINGW_NOTHROW long _get_osfhandle (int);
_CRTIMP __cdecl __MINGW_NOTHROW int _isatty (int);
#ifndef _STREAM_COMPAT
/* In a very odd turn of events this function is excluded from those
* files which define _STREAM_COMPAT. This is required in order to
* build GNU libio because of a conflict with _eof in streambuf.h
* line 107. Actually I might just be able to change the name of
* the enum member in streambuf.h ... we'll see. TODO
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _eof (int);
#endif
/* Locking files: attribute constants are defined in <sys/locking.h>,
* which users are expected to include.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _locking (int, int, long);
_CRTIMP __cdecl __MINGW_NOTHROW long _lseek (int, long, int);
/* Opening files, (or streams); manifest constants for construction of
* the mode flags are defined in <fctl.h>, which users are expected to
* include. The "optional" third argument is an unsigned int; it is
* REQUIRED, when creating a new file, to specify the permissions to
* apply when said file is released by the creating process.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _open (const char *, int, ...);
_CRTIMP __cdecl __MINGW_NOTHROW int _open_osfhandle (intptr_t, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _pipe (int *, unsigned int, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _read (int, void *, unsigned int);
_CRTIMP __cdecl __MINGW_NOTHROW int _setmode (int, int);
/* Microsoft declares remove() & rename(), (but not their wchar_t
* counterparts), in <io.h> as well as in <stdio.h>; these should be
* consistent with <stdio.h>, but we trust the compiler to alert us
* (eventually) if not.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int remove (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int rename (const char *, const char *);
/* Open files with specified sharing attributes; manifest constants
* for constructing the sharing mode argument are in <share.h>, which
* users must include. The optional fourth argument is an unsigned
* int, specifing permissions to apply after closing a new file.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _sopen (const char *, int, int, ...);
_CRTIMP __cdecl __MINGW_NOTHROW long _tell (int);
/* FIXME: POSIX wants umask() in <sys/stat.h>, and, although vague,
* Microsoft may agree; we declare it here as well!
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _umask (int);
_CRTIMP __cdecl __MINGW_NOTHROW int _unlink (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int _write (int, const void *, unsigned int);
#endif /* _IO_H */
#if defined __MSVCRT__ && ! (defined _IO_H && defined _WCHAR_H)
/* These wchar_t functions are made available for selective inclusion
* by <wchar.h>, in addition to direct inclusion of <io.h>, but they
* are only supported by MSVCRT.DLL and derivatives; they don't exist
* in CRTDLL.DLL. Furthermore, if both _IO_H and _WCHAR_H have been
* defined, by the time we get here, then this must be direct <io.h>
* inclusion, and we've already declared these by prior inclusion of
* <wchar.h>; there is no need to declare them again.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _waccess (const wchar_t *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _wchmod (const wchar_t *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _wcreat (const wchar_t *, int);
_CRTIMP __cdecl __MINGW_NOTHROW int _wunlink (const wchar_t *);
_CRTIMP __cdecl __MINGW_NOTHROW int _wopen (const wchar_t *, int, ...);
_CRTIMP __cdecl __MINGW_NOTHROW int _wsopen (const wchar_t *, int, int, ...);
_CRTIMP __cdecl __MINGW_NOTHROW wchar_t *_wmktemp (wchar_t *);
#endif /* __MSVCRT__ && ! (_IO_H && _WCHAR_H) */
#if defined _IO_H && ! defined _NO_OLDNAMES
/* Non-underscored versions of non-ANSI functions to improve portability;
* these are implemented in libmoldname.a, and once again are declared
* only when <io.h> is included directly.
*/
#ifndef _UWIN
_CRTIMP __cdecl __MINGW_NOTHROW int access (const char*, int);
_CRTIMP __cdecl __MINGW_NOTHROW int chsize (int, long );
_CRTIMP __cdecl __MINGW_NOTHROW int close (int);
_CRTIMP __cdecl __MINGW_NOTHROW int creat (const char*, int);
_CRTIMP __cdecl __MINGW_NOTHROW int dup (int);
_CRTIMP __cdecl __MINGW_NOTHROW int dup2 (int, int);
_CRTIMP __cdecl __MINGW_NOTHROW int eof (int);
_CRTIMP __cdecl __MINGW_NOTHROW long filelength (int);
_CRTIMP __cdecl __MINGW_NOTHROW int isatty (int);
_CRTIMP __cdecl __MINGW_NOTHROW long lseek (int, long, int);
_CRTIMP __cdecl __MINGW_NOTHROW int open (const char*, int, ...);
_CRTIMP __cdecl __MINGW_NOTHROW int read (int, void*, unsigned int);
_CRTIMP __cdecl __MINGW_NOTHROW int setmode (int, int);
_CRTIMP __cdecl __MINGW_NOTHROW int sopen (const char*, int, int, ...);
_CRTIMP __cdecl __MINGW_NOTHROW long tell (int);
_CRTIMP __cdecl __MINGW_NOTHROW int umask (int);
_CRTIMP __cdecl __MINGW_NOTHROW int unlink (const char*);
_CRTIMP __cdecl __MINGW_NOTHROW int write (int, const void*, unsigned int);
#endif /* !_UWIN */
#ifdef __USE_MINGW_ACCESS
/* Old versions of MSVCRT.DLL's access() just ignored X_OK, while the
* version shipped with Vista fails; this inline implementation of the
* portably named access() function protects against such failure.
*/
#define access(__fname,__mode) __mingw_access (__fname, __mode)
static __inline__ int __mingw_access (const char* __fname, int __mode)
{ return _access (__fname, __mode & ~X_OK); }
#endif /* _USE_MINGW_ACCESS */
#if 0
/* FIXME:
* Wide character versions: may also be declared in <wchar.h>.
* Where do these live? Not in libmoldname.a nor in libmsvcrt.a;
* do they exist at all?
*/
int waccess(const wchar_t *, int);
int wchmod(const wchar_t *, int);
int wcreat(const wchar_t *, int);
long wfindfirst(wchar_t *, struct _wfinddata_t *);
int wfindnext(long, struct _wfinddata_t *);
int wunlink(const wchar_t *);
int wrename(const wchar_t *, const wchar_t *);
int wopen(const wchar_t *, int, ...);
int wsopen(const wchar_t *, int, int, ...);
wchar_t * wmktemp(wchar_t *);
#endif
#endif /* !_NO_OLDNAMES */
_END_C_DECLS
#endif /* ! RC_INVOKED */
#endif /* !_IO_H: $RCSfile: io.h,v $: end of file */