Documentation: document HFSPlus

Documentation: document HFSPlus filesystem and its mount options.

Signed-off-by: Wyatt Banks <wyatt@banksresearch.com>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/Documentation/filesystems/hfsplus.txt b/Documentation/filesystems/hfsplus.txt
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+
+Macintosh HFSPlus Filesystem for Linux
+======================================
+
+HFSPlus is a filesystem first introduced in MacOS 8.1.
+HFSPlus has several extensions to HFS, including 32-bit allocation
+blocks, 255-character unicode filenames, and file sizes of 2^63 bytes.
+
+
+Mount options
+=============
+
+When mounting an HFSPlus 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 filesystem
+       that have uninitialized permissions structures.
+       Default:  user/group id of the mounting process.
+
+  umask=n
+       Specifies the umask (in octal) used for files and directories
+       that have uninitialized permissions structures.
+       Default:  umask of the mounting process.
+
+  session=n
+       Select the CDROM session to mount as HFSPlus 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.  This option 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.
+
+  decompose
+       Decompose file name characters.
+
+  nodecompose
+       Do not decompose file name characters.
+
+  force
+       Used to force write access to volumes that are marked as journalled
+       or locked.  Use at your own risk.
+
+  nls=cccc
+       Encoding to use when presenting file names.
+
+
+References
+==========
+
+kernel source:         <file:fs/hfsplus>
+
+Apple Technote 1150    http://developer.apple.com/technotes/tn/tn1150.html