lib/dirent.in.h

   1 /* A GNU-like <dirent.h>.
   2    Copyright (C) 2006-2012 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _@GUARD_PREFIX@_DIRENT_H
  18
  19 #if __GNUC__ >= 3
  20 @PRAGMA_SYSTEM_HEADER@
  21 #endif
  22 @PRAGMA_COLUMNS@
  23
  24 /* The include_next requires a split double-inclusion guard.  */
  25 #if @HAVE_DIRENT_H@
  26 # @INCLUDE_NEXT@ @NEXT_DIRENT_H@
  27 #endif
  28
  29 #ifndef _@GUARD_PREFIX@_DIRENT_H
  30 #define _@GUARD_PREFIX@_DIRENT_H
  31
  32 /* Get ino_t.  Needed on some systems, including glibc 2.8.  */
  33 #include <sys/types.h>
  34
  35 #if !@HAVE_DIRENT_H@
  36 /* Define types DIR and 'struct dirent'.  */
  37 # if !GNULIB_defined_struct_dirent
  38 struct dirent
  39 {
  40   char d_type;
  41   char d_name[1];
  42 };
  43 /* Possible values for 'd_type'.  */
  44 #  define DT_UNKNOWN 0
  45 #  define DT_FIFO    1          /* FIFO */
  46 #  define DT_CHR     2          /* character device */
  47 #  define DT_DIR     4          /* directory */
  48 #  define DT_BLK     6          /* block device */
  49 #  define DT_REG     8          /* regular file */
  50 #  define DT_LNK    10          /* symbolic link */
  51 #  define DT_SOCK   12          /* socket */
  52 #  define DT_WHT    14          /* whiteout */
  53 typedef struct gl_directory DIR;
  54 #  define GNULIB_defined_struct_dirent 1
  55 # endif
  56 #endif
  57
  58 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  59
  60 /* The definition of _GL_ARG_NONNULL is copied here.  */
  61
  62 /* The definition of _GL_WARN_ON_USE is copied here.  */
  63
  64
  65 /* Declare overridden functions.  */
  66
  67 #if @GNULIB_OPENDIR@
  68 # if @REPLACE_OPENDIR@
  69 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  70 #   undef opendir
  71 #   define opendir rpl_opendir
  72 #  endif
  73 _GL_FUNCDECL_RPL (opendir, DIR *, (const char *dir_name) _GL_ARG_NONNULL ((1)));
  74 _GL_CXXALIAS_RPL (opendir, DIR *, (const char *dir_name));
  75 # else
  76 #  if !@HAVE_OPENDIR@
  77 _GL_FUNCDECL_SYS (opendir, DIR *, (const char *dir_name) _GL_ARG_NONNULL ((1)));
  78 #  endif
  79 _GL_CXXALIAS_SYS (opendir, DIR *, (const char *dir_name));
  80 # endif
  81 _GL_CXXALIASWARN (opendir);
  82 #elif defined GNULIB_POSIXCHECK
  83 # undef opendir
  84 # if HAVE_RAW_DECL_OPENDIR
  85 _GL_WARN_ON_USE (opendir, "opendir is not portable - "
  86                  "use gnulib module opendir for portability");
  87 # endif
  88 #endif
  89
  90 #if @GNULIB_READDIR@
  91 # if !@HAVE_READDIR@
  92 _GL_FUNCDECL_SYS (readdir, struct dirent *, (DIR *dirp) _GL_ARG_NONNULL ((1)));
  93 # endif
  94 _GL_CXXALIAS_SYS (readdir, struct dirent *, (DIR *dirp));
  95 _GL_CXXALIASWARN (readdir);
  96 #elif defined GNULIB_POSIXCHECK
  97 # undef readdir
  98 # if HAVE_RAW_DECL_READDIR
  99 _GL_WARN_ON_USE (readdir, "readdir is not portable - "
 100                  "use gnulib module readdir for portability");
 101 # endif
 102 #endif
 103
 104 #if @GNULIB_REWINDDIR@
 105 # if !@HAVE_REWINDDIR@
 106 _GL_FUNCDECL_SYS (rewinddir, void, (DIR *dirp) _GL_ARG_NONNULL ((1)));
 107 # endif
 108 _GL_CXXALIAS_SYS (rewinddir, void, (DIR *dirp));
 109 _GL_CXXALIASWARN (rewinddir);
 110 #elif defined GNULIB_POSIXCHECK
 111 # undef rewinddir
 112 # if HAVE_RAW_DECL_REWINDDIR
 113 _GL_WARN_ON_USE (rewinddir, "rewinddir is not portable - "
 114                  "use gnulib module rewinddir for portability");
 115 # endif
 116 #endif
 117
 118 #if @GNULIB_CLOSEDIR@
 119 # if @REPLACE_CLOSEDIR@
 120 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 121 #   undef closedir
 122 #   define closedir rpl_closedir
 123 #  endif
 124 _GL_FUNCDECL_RPL (closedir, int, (DIR *dirp) _GL_ARG_NONNULL ((1)));
 125 _GL_CXXALIAS_RPL (closedir, int, (DIR *dirp));
 126 # else
 127 #  if !@HAVE_CLOSEDIR@
 128 _GL_FUNCDECL_SYS (closedir, int, (DIR *dirp) _GL_ARG_NONNULL ((1)));
 129 #  endif
 130 _GL_CXXALIAS_SYS (closedir, int, (DIR *dirp));
 131 # endif
 132 _GL_CXXALIASWARN (closedir);
 133 #elif defined GNULIB_POSIXCHECK
 134 # undef closedir
 135 # if HAVE_RAW_DECL_CLOSEDIR
 136 _GL_WARN_ON_USE (closedir, "closedir is not portable - "
 137                  "use gnulib module closedir for portability");
 138 # endif
 139 #endif
 140
 141 #if @GNULIB_DIRFD@
 142 /* Return the file descriptor associated with the given directory stream,
 143    or -1 if none exists.  */
 144 # if @REPLACE_DIRFD@
 145 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 146 #   undef dirfd
 147 #   define dirfd rpl_dirfd
 148 #  endif
 149 _GL_FUNCDECL_RPL (dirfd, int, (DIR *) _GL_ARG_NONNULL ((1)));
 150 _GL_CXXALIAS_RPL (dirfd, int, (DIR *));
 151 # else
 152 #  if defined __cplusplus && defined GNULIB_NAMESPACE && defined dirfd
 153     /* dirfd is defined as a macro and not as a function.
 154        Turn it into a function and get rid of the macro.  */
 155 static inline int (dirfd) (DIR *dp) { return dirfd (dp); }
 156 #   undef dirfd
 157 #  endif
 158 #  if !(@HAVE_DECL_DIRFD@ || defined dirfd)
 159 _GL_FUNCDECL_SYS (dirfd, int, (DIR *) _GL_ARG_NONNULL ((1)));
 160 #  endif
 161 _GL_CXXALIAS_SYS (dirfd, int, (DIR *));
 162 # endif
 163 _GL_CXXALIASWARN (dirfd);
 164 #elif defined GNULIB_POSIXCHECK
 165 # undef dirfd
 166 # if HAVE_RAW_DECL_DIRFD
 167 _GL_WARN_ON_USE (dirfd, "dirfd is unportable - "
 168                  "use gnulib module dirfd for portability");
 169 # endif
 170 #endif
 171
 172 #if @GNULIB_FDOPENDIR@
 173 /* Open a directory stream visiting the given directory file
 174    descriptor.  Return NULL and set errno if fd is not visiting a
 175    directory.  On success, this function consumes fd (it will be
 176    implicitly closed either by this function or by a subsequent
 177    closedir).  */
 178 # if @REPLACE_FDOPENDIR@
 179 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 180 #   undef fdopendir
 181 #   define fdopendir rpl_fdopendir
 182 #  endif
 183 _GL_FUNCDECL_RPL (fdopendir, DIR *, (int fd));
 184 _GL_CXXALIAS_RPL (fdopendir, DIR *, (int fd));
 185 # else
 186 #  if !@HAVE_FDOPENDIR@ || !@HAVE_DECL_FDOPENDIR@
 187 _GL_FUNCDECL_SYS (fdopendir, DIR *, (int fd));
 188 #  endif
 189 _GL_CXXALIAS_SYS (fdopendir, DIR *, (int fd));
 190 # endif
 191 _GL_CXXALIASWARN (fdopendir);
 192 #elif defined GNULIB_POSIXCHECK
 193 # undef fdopendir
 194 # if HAVE_RAW_DECL_FDOPENDIR
 195 _GL_WARN_ON_USE (fdopendir, "fdopendir is unportable - "
 196                  "use gnulib module fdopendir for portability");
 197 # endif
 198 #endif
 199
 200 #if @GNULIB_SCANDIR@
 201 /* Scan the directory DIR, calling FILTER on each directory entry.
 202    Entries for which FILTER returns nonzero are individually malloc'd,
 203    sorted using qsort with CMP, and collected in a malloc'd array in
 204    *NAMELIST.  Returns the number of entries selected, or -1 on error.  */
 205 # if !@HAVE_SCANDIR@
 206 _GL_FUNCDECL_SYS (scandir, int,
 207                   (const char *dir, struct dirent ***namelist,
 208                    int (*filter) (const struct dirent *),
 209                    int (*cmp) (const struct dirent **, const struct dirent **))
 210                   _GL_ARG_NONNULL ((1, 2, 4)));
 211 # endif
 212 /* Need to cast, because on glibc systems, the fourth parameter is
 213                         int (*cmp) (const void *, const void *).  */
 214 _GL_CXXALIAS_SYS_CAST (scandir, int,
 215                        (const char *dir, struct dirent ***namelist,
 216                         int (*filter) (const struct dirent *),
 217                         int (*cmp) (const struct dirent **, const struct dirent **)));
 218 _GL_CXXALIASWARN (scandir);
 219 #elif defined GNULIB_POSIXCHECK
 220 # undef scandir
 221 # if HAVE_RAW_DECL_SCANDIR
 222 _GL_WARN_ON_USE (scandir, "scandir is unportable - "
 223                  "use gnulib module scandir for portability");
 224 # endif
 225 #endif
 226
 227 #if @GNULIB_ALPHASORT@
 228 /* Compare two 'struct dirent' entries alphabetically.  */
 229 # if !@HAVE_ALPHASORT@
 230 _GL_FUNCDECL_SYS (alphasort, int,
 231                   (const struct dirent **, const struct dirent **)
 232                   _GL_ARG_NONNULL ((1, 2)));
 233 # endif
 234 /* Need to cast, because on glibc systems, the parameters are
 235                        (const void *, const void *).  */
 236 _GL_CXXALIAS_SYS_CAST (alphasort, int,
 237                        (const struct dirent **, const struct dirent **));
 238 _GL_CXXALIASWARN (alphasort);
 239 #elif defined GNULIB_POSIXCHECK
 240 # undef alphasort
 241 # if HAVE_RAW_DECL_ALPHASORT
 242 _GL_WARN_ON_USE (alphasort, "alphasort is unportable - "
 243                  "use gnulib module alphasort for portability");
 244 # endif
 245 #endif
 246
 247
 248 #endif /* _@GUARD_PREFIX@_DIRENT_H */
 249 #endif /* _@GUARD_PREFIX@_DIRENT_H */