diff options
author | Arne Babenhauserheide <arne_bab@web.de> | 2011-06-19 15:14:48 +0200 |
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committer | Arne Babenhauserheide <arne_bab@web.de> | 2011-06-19 15:14:48 +0200 |
commit | e7256d0f7904277dd954e7e00ea30037cdaf3212 (patch) | |
tree | b8dc9bcdcd760fac7d4410db15aea73b004f0cfa /hurd/translator | |
parent | f1e6f967f45bc86dd983f685f485e41cf4e8d3a6 (diff) | |
parent | 0af46c58452d63160097c8d5480cd16eac4b49c8 (diff) |
Merge branch 'master' of flubber:~hurd-web/hurd-web
Diffstat (limited to 'hurd/translator')
-rw-r--r-- | hurd/translator/ext2fs.mdwn | 16 | ||||
-rw-r--r-- | hurd/translator/ext2fs/filetype.mdwn | 33 |
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. |