/* * 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_ */