/* A GNU-like <dirent.h>.
- Copyright (C) 2006-2008 Free Software Foundation, Inc.
+ Copyright (C) 2006-2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef _GL_DIRENT_H
#define _GL_DIRENT_H
-/* The definition of GL_LINK_WARNING is copied here. */
+/* Get ino_t. Needed on some systems, including glibc 2.8. */
+#include <sys/types.h>
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
-#ifdef __cplusplus
-extern "C" {
-#endif
/* Declare overridden functions. */
-#if @REPLACE_FCHDIR@
-# define opendir rpl_opendir
-extern DIR * opendir (const char *);
-# define closedir rpl_closedir
-extern int closedir (DIR *);
+#if @REPLACE_CLOSEDIR@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define closedir rpl_closedir
+# endif
+_GL_FUNCDECL_RPL (closedir, int, (DIR *) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (closedir, int, (DIR *));
+#else
+_GL_CXXALIAS_SYS (closedir, int, (DIR *));
#endif
-
-/* Declare GNU extensions. */
+_GL_CXXALIASWARN (closedir);
#if @GNULIB_DIRFD@
# if !@HAVE_DECL_DIRFD@ && !defined dirfd
/* Return the file descriptor associated with the given directory stream,
or -1 if none exists. */
-extern int dirfd (DIR const *dir);
+_GL_EXTERN_C int dirfd (DIR *dir) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef dirfd
-# define dirfd(d) \
- (GL_LINK_WARNING ("dirfd is unportable - " \
- "use gnulib module dirfd for portability"), \
- dirfd (d))
+# if HAVE_RAW_DECL_DIRFD
+_GL_WARN_ON_USE (dirfd, "dirfd is unportable - "
+ "use gnulib module dirfd for portability");
+# endif
+#endif
+
+#if @GNULIB_FDOPENDIR@
+/* Open a directory stream visiting the given directory file
+ descriptor. Return NULL and set errno if fd is not visiting a
+ directory. On success, this function consumes fd (it will be
+ implicitly closed either by this function or by a subsequent
+ closedir). */
+# if @REPLACE_FDOPENDIR@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef fdopendir
+# define fdopendir rpl_fdopendir
+# endif
+_GL_FUNCDECL_RPL (fdopendir, DIR *, (int fd));
+_GL_CXXALIAS_RPL (fdopendir, DIR *, (int fd));
+# else
+# if !@HAVE_FDOPENDIR@ || !@HAVE_DECL_FDOPENDIR@
+_GL_FUNCDECL_SYS (fdopendir, DIR *, (int fd));
+# endif
+_GL_CXXALIAS_SYS (fdopendir, DIR *, (int fd));
+# endif
+_GL_CXXALIASWARN (fdopendir);
+#elif defined GNULIB_POSIXCHECK
+# undef fdopendir
+# if HAVE_RAW_DECL_FDOPENDIR
+_GL_WARN_ON_USE (fdopendir, "fdopendir is unportable - "
+ "use gnulib module fdopendir for portability");
+# endif
#endif
-#ifdef __cplusplus
-}
+#if @REPLACE_OPENDIR@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define opendir rpl_opendir
+# endif
+_GL_FUNCDECL_RPL (opendir, DIR *, (const char *) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (opendir, DIR *, (const char *));
+#else
+_GL_CXXALIAS_SYS (opendir, DIR *, (const char *));
+#endif
+_GL_CXXALIASWARN (opendir);
+
+#if @GNULIB_SCANDIR@
+/* Scan the directory DIR, calling FILTER on each directory entry.
+ Entries for which FILTER returns nonzero are individually malloc'd,
+ sorted using qsort with CMP, and collected in a malloc'd array in
+ *NAMELIST. Returns the number of entries selected, or -1 on error. */
+# if !@HAVE_SCANDIR@
+_GL_FUNCDECL_SYS (scandir, int,
+ (const char *dir, struct dirent ***namelist,
+ int (*filter) (const struct dirent *),
+ int (*cmp) (const struct dirent **, const struct dirent **))
+ _GL_ARG_NONNULL ((1, 2, 4)));
+# endif
+/* Need to cast, because on glibc systems, the fourth parameter is
+ int (*cmp) (const void *, const void *). */
+_GL_CXXALIAS_SYS_CAST (scandir, int,
+ (const char *dir, struct dirent ***namelist,
+ int (*filter) (const struct dirent *),
+ int (*cmp) (const struct dirent **, const struct dirent **)));
+_GL_CXXALIASWARN (scandir);
+#elif defined GNULIB_POSIXCHECK
+# undef scandir
+# if HAVE_RAW_DECL_SCANDIR
+_GL_WARN_ON_USE (scandir, "scandir is unportable - "
+ "use gnulib module scandir for portability");
+# endif
+#endif
+
+#if @GNULIB_ALPHASORT@
+/* Compare two 'struct dirent' entries alphabetically. */
+# if !@HAVE_ALPHASORT@
+_GL_FUNCDECL_SYS (alphasort, int,
+ (const struct dirent **, const struct dirent **)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+/* Need to cast, because on glibc systems, the parameters are
+ (const void *, const void *). */
+_GL_CXXALIAS_SYS_CAST (alphasort, int,
+ (const struct dirent **, const struct dirent **));
+_GL_CXXALIASWARN (alphasort);
+#elif defined GNULIB_POSIXCHECK
+# undef alphasort
+# if HAVE_RAW_DECL_ALPHASORT
+_GL_WARN_ON_USE (alphasort, "alphasort is unportable - "
+ "use gnulib module alphasort for portability");
+# endif
#endif