2 files changed, 45 insertions, 4 deletions
diff --git a/hurd/translator/ext2fs.mdwn b/hurd/translator/ext2fs.mdwn
index 305576b8..fff2e74b 100644
--- a/hurd/translator/ext2fs.mdwn
+++ b/hurd/translator/ext2fs.mdwn
@@ -1,4 +1,4 @@
-[[!meta copyright="Copyright © 2007, 2008, 2010 Free Software Foundation,
+[[!meta copyright="Copyright © 2007, 2008, 2010, 2011 Free Software Foundation,
 Inc."]]
 
 [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
@@ -9,14 +9,20 @@ Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
 is included in the section entitled
 [[GNU Free Documentation License|/fdl]]."]]"""]]
 
-# Large Stores
+# Implementation
+
+  * [[filetype]] option
+
+
+## Large Stores
 
 The `ext2fs` translator from the upstream Hurd code base can only handle file
 systems with sizes of less than roughly 2 GiB.
 
 [[!tag open_issue_hurd]]
 
-## Ognyan's Work
+
+### Ognyan's Work
 
   * Ognyan Kulev, [[*Supporting Large ext2 File Systems in the
     Hurd*|ogi-fosdem2005.mgp]], 2005, at FOSDEM
@@ -34,4 +40,6 @@ small backend stores, like floppy devices.
 
 # Documentation
 
-<http://www.nongnu.org/ext2-doc/>
+  * <http://e2fsprogs.sourceforge.net/ext2.html>
+
+  * <http://www.nongnu.org/ext2-doc/>
diff --git a/hurd/translator/ext2fs/filetype.mdwn b/hurd/translator/ext2fs/filetype.mdwn
new file mode 100644
index 00000000..5d85bac9
--- /dev/null
+++ b/hurd/translator/ext2fs/filetype.mdwn
@@ -0,0 +1,33 @@
+[[!meta copyright="Copyright © 2011 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+The *ext2fs* translator doesn't support the ext2 format's *filetype* option.
+
+According to *mke2fs(8)*:
+
+> **filetype**: Store file type information in directory entries.
+
+By setting directory listings' informational `d_type` field (`readdir`, etc.),
+this may avoid the need for subsequent `stat` calls.
+
+Not all file systems can support this option.
+
+In `[hurd]/ext2fs/dir.c` the `EXT2_FEATURE_INCOMPAT_FILETYPE` is generally
+masked out (is not even considered) when adding a node to a directory in
+`diskfs_direnter_hard` and when reading in `diskfs_get_directs`.  The Hurd's
+ext2fs unconditionally sets this field to 0 (`EXT2_FT_UNKNOWN`).
+
+
+# `e2fsck`
+
+Running `e2fsck` on a file system with the *filetype* option, will correct the
+*filetype* for a lot of files (all `EXT2_FT_UNKNOWN`?) to either 1 (regular
+file, `EXT2_FT_REG_FILE`), or 2 (directory, `EXT2_FT_DIR`), and likely others.
+The Hurd's ext2fs will again ignore these fields, of course.