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-*
-* Documentation/filesystems/udf.txt
-*
-UDF Filesystem version 0.9.8.1
-
-If you encounter problems with reading UDF discs using this driver,
-please report them to linux_udf@hpesjro.fc.hp.com, which is the
-developer's list.
-
-Write support requires a block driver which supports writing. Currently
-dvd+rw drives and media support true random sector writes, and so a udf
-filesystem on such devices can be directly mounted read/write. CD-RW
-media however, does not support this. Instead the media can be formatted
-for packet mode using the utility cdrwtool, then the pktcdvd driver can
-be bound to the underlying cd device to provide the required buffering
-and read-modify-write cycles to allow the filesystem random sector writes
-while providing the hardware with only full packet writes. While not
-required for dvd+rw media, use of the pktcdvd driver often enhances
-performance due to very poor read-modify-write support supplied internally
-by drive firmware.
-
--------------------------------------------------------------------------------
-The following mount options are supported:
-
- gid= Set the default group.
- umask= Set the default umask.
- mode= Set the default file permissions.
- dmode= Set the default directory permissions.
- uid= Set the default user.
- bs= Set the block size.
- unhide Show otherwise hidden files.
- undelete Show deleted files in lists.
- adinicb Embed data in the inode (default)
- noadinicb Don't embed data in the inode
- shortad Use short ad's
- longad Use long ad's (default)
- nostrict Unset strict conformance
- iocharset= Set the NLS character set
-
-The uid= and gid= options need a bit more explaining. They will accept a
-decimal numeric value which will be used as the default ID for that mount.
-They will also accept the string "ignore" and "forget". For files on the disk
-that are owned by nobody ( -1 ), they will instead look as if they are owned
-by the default ID. The ignore option causes the default ID to override all
-IDs on the disk, not just -1. The forget option causes all IDs to be written
-to disk as -1, so when the media is later remounted, they will appear to be
-owned by whatever default ID it is mounted with at that time.
-
-For typical desktop use of removable media, you should set the ID to that
-of the interactively logged on user, and also specify both the forget and
-ignore options. This way the interactive user will always see the files
-on the disk as belonging to him.
-
-The remaining are for debugging and disaster recovery:
-
- novrs Skip volume sequence recognition
-
-The following expect a offset from 0.
-
- session= Set the CDROM session (default= last session)
- anchor= Override standard anchor location. (default= 256)
- volume= Override the VolumeDesc location. (unused)
- partition= Override the PartitionDesc location. (unused)
- lastblock= Set the last block of the filesystem/
-
-The following expect a offset from the partition root.
-
- fileset= Override the fileset block location. (unused)
- rootdir= Override the root directory location. (unused)
- WARNING: overriding the rootdir to a non-directory may
- yield highly unpredictable results.
--------------------------------------------------------------------------------
-
-
-For the latest version and toolset see:
- http://linux-udf.sourceforge.net/
-
-Documentation on UDF and ECMA 167 is available FREE from:
- http://www.osta.org/
- http://www.ecma-international.org/
-
-Ben Fennema <bfennema@falcon.csc.calpoly.edu>