source: Daodan/MinGW/include/dirent.h@ 1163

/*
 * 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_
#pragma GCC system_header

/* All the headers include this file. */
#include <_mingw.h>

#include <io.h>

#ifndef RC_INVOKED

_BEGIN_C_DECLS

struct dirent
{
  long            d_ino;                /* Always zero. */
  unsigned short  d_reclen;             /* Always sizeof struct dirent. */
  unsigned short  d_namlen;             /* Length of name in d_name. */
  unsigned        d_type;               /* File attributes */
  char            d_name[FILENAME_MAX]; /* File name. */
};

/* This opaque data type represents the private structure
 * through which a directory stream is referenced.
 */
typedef struct __dirstream_t DIR;

DIR* __cdecl __MINGW_NOTHROW __mingw_opendir (const char*);
struct dirent* __cdecl __MINGW_NOTHROW __mingw_readdir (DIR*);
int __cdecl __MINGW_NOTHROW __mingw_closedir (DIR*);
void __cdecl __MINGW_NOTHROW __mingw_rewinddir (DIR*);
long __cdecl __MINGW_NOTHROW __mingw_telldir (DIR*);
void __cdecl __MINGW_NOTHROW __mingw_seekdir (DIR*, long);

__CRT_ALIAS __JMPSTUB__(( FUNCTION = opendir ))
DIR* __cdecl __MINGW_NOTHROW opendir (const char *__dirname)
{ return __mingw_opendir (__dirname); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = readdir ))
struct dirent* __cdecl __MINGW_NOTHROW readdir (DIR *__dir)
{ return __mingw_readdir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = closedir ))
int __cdecl __MINGW_NOTHROW closedir (DIR *__dir)
{ return __mingw_closedir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = rewinddir ))
void __cdecl __MINGW_NOTHROW rewinddir (DIR *__dir)
{ return __mingw_rewinddir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = telldir ))
long __cdecl __MINGW_NOTHROW telldir (DIR *__dir)
{ return __mingw_telldir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = seekdir ))
void __cdecl __MINGW_NOTHROW seekdir (DIR *__dir, long __loc)
{ return __mingw_seekdir (__dir, __loc); }


/* wide char versions */

struct _wdirent
{
  long            d_ino;                /* Always zero. */
  unsigned short  d_reclen;             /* Always size of struct _wdirent. */
  unsigned short  d_namlen;             /* Length of name in d_name. */
  unsigned        d_type;               /* File attributes */
  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 struct __wdirstream_t _WDIR;

_WDIR* __cdecl __MINGW_NOTHROW __mingw__wopendir (const wchar_t*);
struct _wdirent*  __cdecl __MINGW_NOTHROW __mingw__wreaddir (_WDIR*);
int __cdecl __MINGW_NOTHROW __mingw__wclosedir (_WDIR*);
void __cdecl __MINGW_NOTHROW __mingw__wrewinddir (_WDIR*);
long __cdecl __MINGW_NOTHROW __mingw__wtelldir (_WDIR*);
void __cdecl __MINGW_NOTHROW __mingw__wseekdir (_WDIR*, long);

__CRT_ALIAS __JMPSTUB__(( FUNCTION = _wopendir ))
_WDIR* __cdecl __MINGW_NOTHROW _wopendir (const wchar_t *__dirname)
{ return __mingw__wopendir (__dirname); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = _wreaddir ))
struct _wdirent*  __cdecl __MINGW_NOTHROW _wreaddir (_WDIR *__dir)
{ return __mingw__wreaddir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = _wclosedir ))
int __cdecl __MINGW_NOTHROW _wclosedir (_WDIR *__dir)
{ return __mingw__wclosedir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = _wrewinddir ))
void __cdecl __MINGW_NOTHROW _wrewinddir (_WDIR *__dir)
{ return __mingw__wrewinddir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = _wtelldir ))
long __cdecl __MINGW_NOTHROW _wtelldir (_WDIR *__dir)
{ return __mingw__wtelldir (__dir); }

__CRT_ALIAS __JMPSTUB__(( FUNCTION = _wseekdir ))
void __cdecl __MINGW_NOTHROW _wseekdir (_WDIR *__dir, long __loc)
{ return __mingw__wseekdir (__dir, __loc); }

_END_C_DECLS

#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)

#define _DIRENT_HAVE_D_TYPE    1
#define _DIRENT_HAVE_D_RECLEN  1
#define _DIRENT_HAVE_D_NAMLEN  1

#endif  /* _BSD_SOURCE */
#endif  /* ! RC_INVOKED */

#endif  /* !defined _DIRENT_H_ */