[PATCH] HFS rewrite

From: Roman Zippel <zippel@linux-m68k.org>

This is a complete rewrite of the HFS driver, it gets rid of a all the
special conversion options, which belong in user space.  The driver uses now
a btree support very similiar to HFS+, so that both could be merged at some
point.

Thanks to Ethan Benson <erbenson@alaska.net> for a number of patches to make
the driver more compliant with the spec and Christoph Hellwig <hch@lst.de>
for fixing up the documentation.

Documentation/filesystems/hfs.txt

@@ -0,0 +1,83 @@
+
+Macintosh HFS Filesystem for Linux
+==================================
+
+HFS stands for ``Hierarchical File System'' and is the filesystem used
+by the Mac Plus and all later Macintosh models. Earlier Macintosh
+models used MFS (``Macintosh File System''), which is not supported,
+MacOS 8.1 and newer support a filesystem called HFS+ that's similar to
+HFS but is extended in various areas. Use the hfsplus filesystem driver
+to access such filesystems from Linux.
+
+
+Mount options
+=============
+
+When mounting an HFS filesystem, the following options are accepted:
+
+ creator=cccc, type=cccc
+ Specifies the creator/type values as shown by the MacOS finder
+ used for creating new files. Default values: '????'.
+
+ uid=n, gid=n
+ Specifies the user/group that owns all files on the filesystems.
+ Default: user/group id of the mounting process.
+
+ dir_umask=n, file_umask=n, umask=n
+ Specifies the umask used for all files , all directories or all
+ files and directories. Defaults to the umask of the mounting process.
+
+ session=n
+ Select the CDROM session to mount as HFS filesystem. Defaults to
+ leaving that decision to the CDROM driver. This option will fail
+ with anything but a CDROM as underlying devices.
+
+ part=n
+ Select partition number n from the devices. Does only makes
+ sense for CDROMS because they can't be partitioned under Linux.
+ For disk devices the generic partition parsing code does this
+ for us. Defaults to not parsing the partition table at all.
+
+ quiet
+ Ignore invalid mount options instead of complaining.
+
+
+Writing to HFS Filesystems
+==========================
+
+HFS is not a UNIX filesystem, thus it does not have the usual features you'd
+expect:
+
+ o You can't modify the set-uid, set-gid, sticky or executable bits or the uid
+ and gid of files.
+ o You can't create hard- or symlinks, device files, sockets or FIFOs.
+
+HFS does on the other have the concepts of multiple forks per file. These
+non-standard forks are represented as hidden additional files in the normal
+filesystems namespace which is kind of a cludge and makes the semantics for
+the a little strange:
+
+ o You can't create, delete or rename resource forks of files or the
+ Finder's metadata.
+ o They are however created (with default values), deleted and renamed
+ along with the corresponding data fork or directory.
+ o Copying files to a different filesystem will loose those attributes
+ that are essential for MacOS to work.
+
+
+Creating HFS filesystems
+===================================
+
+The hfsutils package from Robert Leslie contains a program called
+hformat that can be used to create HFS filesystem. See
+<http://www.mars.org/home/rob/proj/hfs/> for details.
+
+
+Credits
+=======
+
+The HFS drivers was written by Paul H. Hargrovea (hargrove@sccm.Stanford.EDU)
+and is now maintained by Roman Zippel (roman@ardistech.com) at Ardis
+Technologies.
+Roman rewrote large parts of the code and brought in btree routines derived
+from Brad Boyer's hfsplus driver (also maintained by Roman now).

MAINTAINERS

@@ -862,8 +862,8 @@ W: http://www.nyx.net/~arobinso
 S: Maintained
 
 HFS FILESYSTEM
-P: Oliver Neukum
-M: oliver@neukum.org
+P: Roman Zippel
+M: zippel@linux-m68k.org
 L: linux-kernel@vger.kernel.org
 S: Maintained