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direntx.h
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direntx.h
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/*
* DIRENT.H (formerly DIRLIB.H)
* This file has no copyright assigned and is placed in the Public Domain.
* This file is a part of the mingw-runtime package.
* No warranty is given; refer to the file DISCLAIMER within the package.
*
*/
#ifndef _DIRENT_H_
#define _DIRENT_H_
/* All the headers include this file. */
#include <_mingw.h>
#include <io.h>
#ifndef RC_INVOKED
#ifdef __cplusplus
extern "C" {
#endif
struct dirent
{
long d_ino; /* Always zero. */
unsigned short d_reclen; /* Always zero. */
unsigned short d_namlen; /* Length of name in d_name. */
/* The following exactly mimic the layout of _finddata_t ...
*/
unsigned d_type; /* File attributes */
time_t d_time_create;
time_t d_time_access; /* always midnight local time */
time_t d_time_write;
_fsize_t d_size;
/*
* ...so that we may map a union of _finddata_t at the
* location of d_type (corresponding to _finddata_t.attrib),
* and thus map this directly to the _findfirst/_findnext
* returned field.
*/
char d_name[FILENAME_MAX]; /* File name. */
};
/*
* This opaque data type represents the private structure
* through which a directory stream is referenced.
*/
typedef union __dirstream_t DIR;
DIR* __cdecl __MINGW_NOTHROW opendir (const char*);
struct dirent* __cdecl __MINGW_NOTHROW readdir (DIR*);
int __cdecl __MINGW_NOTHROW closedir (DIR*);
void __cdecl __MINGW_NOTHROW rewinddir (DIR*);
long __cdecl __MINGW_NOTHROW telldir (DIR*);
void __cdecl __MINGW_NOTHROW seekdir (DIR*, long);
/* wide char versions */
struct _wdirent
{
long d_ino; /* Always zero. */
unsigned short d_reclen; /* Always zero. */
unsigned short d_namlen; /* Length of name in d_name. */
/* The following exactly mimic the layout of _wfinddata_t ...
*/
unsigned d_type; /* File attributes */
time_t d_time_create; /* -1 for FAT file systems */
time_t d_time_access; /* -1 for FAT file systems */
time_t d_time_write;
_fsize_t d_size;
/*
* ...so that we may map a union of _wfinddata_t at the
* location of d_type (corresponding to _wfinddata_t.attrib),
* and thus map this directly to the _wfindfirst/_wfindnext
* returned field.
*/
wchar_t d_name[FILENAME_MAX]; /* File name. */
};
/*
* This opaque data type represents the private structure
* through which a wide directory stream is referenced.
*/
typedef union __wdirstream_t _WDIR;
_WDIR* __cdecl __MINGW_NOTHROW _wopendir (const wchar_t*);
struct _wdirent* __cdecl __MINGW_NOTHROW _wreaddir (_WDIR*);
int __cdecl __MINGW_NOTHROW _wclosedir (_WDIR*);
void __cdecl __MINGW_NOTHROW _wrewinddir (_WDIR*);
long __cdecl __MINGW_NOTHROW _wtelldir (_WDIR*);
void __cdecl __MINGW_NOTHROW _wseekdir (_WDIR*, long);
#ifdef __cplusplus
}
#endif
#if defined(_BSD_SOURCE) || defined(_WIN32)
/*
* BSD-ish systems define manifest constants for the d_type field;
* although probably only DT_REG and DT_DIR are useful on Win32, we
* try to map them as best we can from the _finddata.attrib field.
*
* The relevant Microsoft manifest values are:
*
* _A_NORMAL (0x0000) normal file: best fit for DT_REG
* _A_RDONLY (0x0001) read-only: no BSD d_type equivalent
* _A_HIDDEN (0x0002) hidden entity: no BSD equivalent
* _A_SYSTEM (0x0004) system entity: no BSD equivalent
* _A_VOLID (0x0008) volume label: no BSD equivalent
* _A_SUBDIR (0x0010) directory: best fit for DT_DIR
* _A_ARCH (0x0020) "dirty": no BSD equivalent
*
* Thus, we may immediately define:
*/
#define DT_REG _A_NORMAL
#define DT_DIR _A_SUBDIR
/* The remaining BSD d_type manifest values have no Win32 equivalents;
* we will define them artificially, and then we will ensure that our
* opendir()/readdir() implementation will never assign them; (we will
* substitute DT_UNKNOWN, but it would be unwise to simply make these
* equivalent to that, since an application is likely to simply check
* for d_type equal to any one of these defined types, and thus could
* mistakenly identify DT_UNKNOWN as being of the tested type):
*/
#define DT_BLK (((_A_SUBDIR) << 4) | DT_UNKNOWN)
#define DT_CHR (((_A_SUBDIR) << 5) | DT_UNKNOWN)
#define DT_FIFO (((_A_SUBDIR) << 6) | DT_UNKNOWN)
#define DT_LNK (((_A_SUBDIR) << 7) | DT_UNKNOWN)
#define DT_SOCK (((_A_SUBDIR) << 8) | DT_UNKNOWN)
/* No file system entity can ever be simultaneously a volume label
* and a directory; we will exploit this to unambiguously define:
*/
#define DT_UNKNOWN (_A_VOLID | _A_SUBDIR)
#endif /* _BSD_SOURCE */
#endif /* ! RC_INVOKED */
#endif /* !defined _DIRENT_H_ */