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