# HG changeset patch
# User asl
# Date 1209634269 0
# Node ID c5e3739b3c9afd9be35c642ef87dbd224eddd3b3
# Parent  6d6c8afc94a4a7929deeba0d0e5d576c7dac2e66
        * cdl/fileio.cdl: Use CYGPKG_FILEIO_DIRENT_DTYPE to enable/disable
        d_type field of struct dirent.
        * include/dirent.h: Add a d_type field to struct dirent, in order to
        distinguish file type directly without calling stat.
        * doc/fileio.sgml: Documentation about this new member and the fact
        it is not portable.

diff --git a/packages/io/fileio/current/ChangeLog b/packages/io/fileio/current/ChangeLog
--- a/packages/io/fileio/current/ChangeLog
+++ b/packages/io/fileio/current/ChangeLog
@@ -1,3 +1,13 @@
+2008-04-02 Xinghua Yang <yxinghua@sunnorth.com.cn>
+	   Andrew Lunn <andrew.lunn@ascom.ch>
+
+	* cdl/fileio.cdl: Use CYGPKG_FILEIO_DIRENT_DTYPE to enable/disable
+	d_type field of struct dirent.
+	* include/dirent.h: Add a d_type field to struct dirent, in order to
+	distinguish file type directly without calling stat.
+	* doc/fileio.sgml: Documentation about this new member and the fact
+	it is not portable.
+
 2007-08-17 Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
 
 	tests/fnmatch.c (main): Fix cut/paste error in final pass/fail
diff --git a/packages/io/fileio/current/cdl/fileio.cdl b/packages/io/fileio/current/cdl/fileio.cdl
--- a/packages/io/fileio/current/cdl/fileio.cdl
+++ b/packages/io/fileio/current/cdl/fileio.cdl
@@ -247,6 +247,20 @@ cdl_package CYGPKG_IO_FILEIO {
         compile          fnmatch.c
     }
 
+    cdl_option CYGPKG_FILEIO_DIRENT_DTYPE {
+        display          "Struct dirent contains a d_type field"
+        flavor           bool
+        default_value    0
+        description      "
+            If this option is enabled then struct dirent contains a
+            d_type field. With this field, file type may be
+            distinguished directly without calling stat.  Note: This
+            member is not part of the POSIX standard, however is
+            commonely implemented in Linux, FreeBSD, but not SunOS.
+            Also, not all filesystems support it.  So this feature is
+            not portable and should be used with caution." 
+    }
+
     # ----------------------------------------------------------------
     # Tests
 
diff --git a/packages/io/fileio/current/doc/fileio.sgml b/packages/io/fileio/current/doc/fileio.sgml
--- a/packages/io/fileio/current/doc/fileio.sgml
+++ b/packages/io/fileio/current/doc/fileio.sgml
@@ -520,8 +520,14 @@ specifier of <literal>SEEK_SET</literal>
 Most of these considerations are invisible to clients of a filesystem
 since they will access directories via the POSIX
 <function>opendir()</function>, <function>readdir()</function> and
-<function>closedir()</function> functions.
-</para>
+<function>closedir()</function> functions. The <structname> struct
+dirent</structname> object returned by <function>readdir()</function>
+will always contain <structname>d_name</structname> as required by
+POSIX. When <literal>CYGPKG_FILEIO_DIRENT_DTYPE</literal> is enabled
+it will also contain <structname>d_type</structname>, which is not
+part of POSIX, but often implemented by OSes. Currently only the
+FATFS, RAMFS, ROMFS and JFFS2 filesystem sets this value. For other
+filesystems a value of 0 will be returned in the member.</para>
 
 <para>
 Support for the <function>getcwd()</function> function is provided by
@@ -1193,4 +1199,4 @@ examples of how this has been done.
 
 <!-- }}} -->
 
-</part>
\ No newline at end of file
+</part>
diff --git a/packages/io/fileio/current/include/dirent.h b/packages/io/fileio/current/include/dirent.h
--- a/packages/io/fileio/current/include/dirent.h
+++ b/packages/io/fileio/current/include/dirent.h
@@ -34,9 +34,6 @@
 //
 // This exception does not invalidate any other reasons why a work based on
 // this file might be covered by the GNU General Public License.
-//
-// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
-// at http://sources.redhat.com/ecos/ecos-license/
 // -------------------------------------------
 //####ECOSGPLCOPYRIGHTEND####
 //========================================================================
@@ -72,6 +69,13 @@ extern "C" {
     
 struct dirent
 {
+#ifdef CYGPKG_FILEIO_DIRENT_DTYPE
+  
+    mode_t      d_type; // Only supported with FATFS, RAMFS, ROMFS,
+                        // and JFFS2.
+                        // d_type is not part of POSIX so
+                        // should be used with caution.
+#endif
     char        d_name[NAME_MAX+1];
 };
 
diff --git a/packages/io/fileio/current/src/dir.cxx b/packages/io/fileio/current/src/dir.cxx
--- a/packages/io/fileio/current/src/dir.cxx
+++ b/packages/io/fileio/current/src/dir.cxx
@@ -32,9 +32,6 @@
 //
 // This exception does not invalidate any other reasons why a work based on
 // this file might be covered by the GNU General Public License.
-//
-// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
-// at http://sources.redhat.com/ecos/ecos-license/
 // -------------------------------------------
 //####ECOSGPLCOPYRIGHTEND####
 //==========================================================================
@@ -186,6 +183,12 @@ extern int readdir_r( DIR *dirp, struct 
         FILEIO_RETURN_VALUE( EBADF );
     }
 
+#ifdef CYGPKG_FILEIO_DIRENT_DTYPE
+    // d_type is only supposed by a few filesystems, so make sure other
+    // filesystems return a sane value;
+    entry->d_type = 0;
+#endif
+
     res = read( fd, (void *)entry, sizeof(struct dirent));
 
     if( res < 0 )
@@ -195,7 +198,13 @@ extern int readdir_r( DIR *dirp, struct 
     
     if( res > 0 )
         *result = entry;
+
+#ifdef CYGPKG_FILEIO_DIRENT_DTYPE
+    // Only the lower bits contain the type of file, so and those out.
+    entry->d_type &= S_IFMT;
+#endif
     
+
     FILEIO_RETURN( ENOERR );
 }