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authorRalf Baechle <ralf@linux-mips.org>1997-01-07 02:33:00 +0000
committer <ralf@linux-mips.org>1997-01-07 02:33:00 +0000
commitbeb116954b9b7f3bb56412b2494b562f02b864b1 (patch)
tree120e997879884e1b9d93b265221b939d2ef1ade1 /Documentation/filesystems
parent908d4681a1dc3792ecafbe64265783a86c4cccb6 (diff)
Import of Linux/MIPS 2.1.14
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/00-INDEX16
-rw-r--r--Documentation/filesystems/affs.txt188
-rw-r--r--Documentation/filesystems/hpfs.txt27
-rw-r--r--Documentation/filesystems/ncpfs.txt12
-rw-r--r--Documentation/filesystems/smbfs.txt13
-rw-r--r--Documentation/filesystems/sysv-fs.txt37
-rw-r--r--Documentation/filesystems/umsdos.txt96
-rw-r--r--Documentation/filesystems/vfat.txt464
8 files changed, 853 insertions, 0 deletions
diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
new file mode 100644
index 000000000..edb8c5212
--- /dev/null
+++ b/Documentation/filesystems/00-INDEX
@@ -0,0 +1,16 @@
+00-INDEX
+ - this file (info on some of the filesystems supported by linux).
+affs.txt
+ - info and mount options for the Amiga Fast File System.
+hpfs.txt
+ - info and mount options for the OS/2 HPFS.
+ncpfs.txt
+ - info on Novell Netware(tm) filesystem using NCP protocol.
+smbfs.txt
+ - info on using filesystems with the SMB protocol (Win 3.11, Win NT)
+sysv-fs.txt
+ - info on the SystemV/Coherent filesystem.
+umsdos.txt
+ - info on the umsdos extensions to the msdos filesystem.
+vfat.txt
+ - info on using the VFAT filesystem used in Win NT and Win 95
diff --git a/Documentation/filesystems/affs.txt b/Documentation/filesystems/affs.txt
new file mode 100644
index 000000000..c5d329ec6
--- /dev/null
+++ b/Documentation/filesystems/affs.txt
@@ -0,0 +1,188 @@
+Amiga filesystems Overview
+==========================
+
+Not all varieties of the Amiga filesystems are supported for reading and
+writing. The Amiga currently knows 6 different filesystems:
+
+DOS\0 The old or original filesystem, not really suited for
+ hard disks and normally not used on them, either.
+ Supported read/write.
+
+DOS\1 The original Fast File System. Supported read/write.
+
+DOS\2 The old "international" filesystem. International means that
+ a bug has been fixed so that accented ("international") letters
+ in file names are case-insensitive, as they ought to be.
+ Supported read/write.
+
+DOS\3 The "international" Fast File System. Supported read/write.
+
+DOS\4 The original filesystem with directory cache. The directory
+ cache speeds up directory accesses on floppies considerably,
+ but slows down file creation/deletion. Doesn't make much
+ sense on hard disks. Supported read only.
+
+DOS\5 The Fast File System with directory cache. Supported read only.
+
+All of the above filesystems allow block sizes from 512 to 32K bytes.
+Supported block sizes are: 512, 1024, 2048 and 4096 bytes. Larger blocks
+speed up almost everything with the expense of wasted disk space. The speed
+gain above 4K seems not really worth the price, so you don't lose too
+much here, either.
+
+The muFS (multi user File System) equivalents of the above file systems
+are supported, too.
+
+Mount options for the AFFS
+==========================
+
+protect If this option is set, the protection bits cannot be altered.
+
+uid[=uid] This sets the uid of the root directory (i. e. the mount point
+ to uid or to the uid of the current user, if the =uid is
+ omitted.
+
+gid[=gid] Same as above, but for gid.
+
+setuid[=uid] This sets the owner of all files and directories in the file
+ system to uid or the uid of the current user, respectively.
+
+setgid[=gid] Same as above, but for gid.
+
+mode=mode Sets the mode flags to the given (octal) value, regardless
+ of the original permissions. Directories will get an x
+ permission, if the corresponding r bit is set.
+ This is useful since most of the plain AmigaOS files
+ will map to 600.
+
+reserved=num Sets the number of reserved blocks at the start of the
+ partition to num. Default is 2.
+
+root=block Sets the block number of the root block. This should never
+ be necessary.
+
+bs=blksize Sets the blocksize to blksize. Valid block sizes are 512,
+ 1024, 2048 and 4096. Like the root option, this should
+ never be necessary, as the affs can figure it out itself.
+
+quiet The file system will not return an error for disallowed
+ mode changes.
+
+verbose The volume name, file system type and block size will
+ be written to the syslog.
+
+prefix=path Path will be prefixed to every absolute path name of
+ symbolic links on an AFFS partition. Default = /
+
+volume=name When symbolic links with an absolute path are created
+ on an AFFS partition, volume will be prepended as the
+ volume name. Default = "" (empty string).
+
+Handling of the Users/Groups and protection flags
+=================================================
+
+Amiga -> Linux:
+
+The Amiga protection flags RWEDRWEDHSPARWED are handled as follows:
+
+ - R maps to r for user, group and others. On directories, R implies x.
+
+ - If both W and D are allowed, w will be set.
+
+ - If both R and S are set, x will be set.
+
+ - H, P and E are always retained and ignored under Linux.
+
+ - A is always reset when written.
+
+User id and group id will be used unless set[gu]id are given as mount
+options. Since most of the Amiga file systems are single user systems
+they will be owned by root.
+
+Linux -> Amiga:
+
+The Linux rwxrwxrwx file mode is handled as follows:
+
+ - r permission will set R for user, group and others.
+
+ - w permission will set W and D for user, group and others.
+
+ - x permission of the user will set S for plain files.
+
+ - All other flags (suid, sgid, ...) are ignored and will
+ not be retained.
+
+Newly created files and directories will get the user and group id
+of the current user and a mode according to the umask.
+
+Symbolic links
+==============
+
+Although the Amiga and Linux file systems resemble each other, there
+are some, not always subtle, differences. One of them becomes apparent
+with symbolic links. While Linux has a file system with exactly one
+root directory, the Amiga has a seperate root directory for each
+file system (i. e. partition, floppy disk, ...). With the Amiga,
+these entities are called "volumes". They have symbolic names which
+can be used to access them. Thus, symbolic links can point to a
+different volume. AFFS turns the volume name into a directory name
+and prepends the prefix path (see prefix option) to it.
+
+Example:
+You mount all your Amiga partitions under /amiga/<volume> (where
+<volume> is the name of the volume), and you give the option
+"prefix=/amiga/" when mounting all your AFFS partitions. (They
+might be "User", "WB" and "Graphics", the mount points /amiga/User,
+/amiga/WB and /amiga/Graphics). A symbolic link referring to
+"User:sc/include/dos/dos.h" will be followed to
+"/amiga/User/sc/include/dos/dos.h".
+
+Examples
+========
+
+Command line
+ mount Archive/Amiga/Workbench3.1.adf /mnt -t affs -o loop,reserved=4
+ mount /dev/sda3 /Amiga -t affs
+
+/etc/fstab example
+ /dev/sdb5 /d/f affs ro
+
+Bugs, Restrictions, Caveats
+===========================
+
+Quite a few things may not work as advertised. Not everything is
+tested, though several hundred MB have been read and written using
+this fs.
+
+Filenames are truncated to 30 characters without warning.
+
+Currently there are no checks against invalid characters (':')
+in filenames.
+
+Case is ignored by the affs in filename matching, but Linux shells
+do care about the case. Example (with /mnt being an affs mounted fs):
+ rm /mnt/WRONGCASE
+will remove /mnt/wrongcase, but
+ rm /mnt/WR*
+will not since the names are matched by the shell.
+
+The block allocation is designed for hard disk partitions. If more
+than 1 process writes to a (small) diskette, the blocks are allocated
+in an ugly way (but the real AFFS doesn't do much better). This
+is also true when space gets tight.
+
+The bitmap valid flag in the root block may not be accurate when the
+system crashes while an affs partition is mounted. There's currently
+no way to fix this without an Amiga (disk validator) or manually
+(who would do this?). Maybe later.
+
+A fsck.affs and mkfs.affs will probably be available in the future.
+Until then, you should do
+ ln -s /bin/true /etc/fs/mkfs.affs
+
+It's not possible to read floppy disks with a normal PC or workstation
+due to an incompatibility with the Amiga floppy controller.
+
+If you are interested in an Amiga Emulator for Linux, look at
+
+http://www-users.informatik.rwth-aachen.de/~crux/uae.html
diff --git a/Documentation/filesystems/hpfs.txt b/Documentation/filesystems/hpfs.txt
new file mode 100644
index 000000000..03e0481bb
--- /dev/null
+++ b/Documentation/filesystems/hpfs.txt
@@ -0,0 +1,27 @@
+Linux can read, but not write, OS/2 HPFS partitions.
+
+Mount options are the same as for msdos partitions.
+
+ uid=nnn All files in the partition will be owned by user id nnn.
+ gid=nnn All files in the partition will be in group nnn.
+ umask=nnn The permission mask (see umask(1)) for the partition.
+ conv=binary Data is returned exactly as is, with CRLF's. [default]
+ conv=text (Carriage return, line feed) is replaced with newline.
+ conv=auto Chooses, file by file, conv=binary or conv=text (by guessing)
+
+There are mount options unique to HPFS.
+
+ case=lower Convert file names to lower case. [default]
+ case=asis Return file names as is, in mixed case.
+
+ nocheck Proceed even if "Improperly stopped flag is set"
+
+Case is not significant in filename matching, like real HPFS.
+
+
+Command line example
+ mkdir -p /os2/c
+ mount -t hpfs -o uid=100,gid=100 /dev/sda6 /os2/c
+
+/etc/fstab example
+ /dev/sdb5 /d/f hpfs ro,uid=402,gid=402,umask=002
diff --git a/Documentation/filesystems/ncpfs.txt b/Documentation/filesystems/ncpfs.txt
new file mode 100644
index 000000000..8698dba3f
--- /dev/null
+++ b/Documentation/filesystems/ncpfs.txt
@@ -0,0 +1,12 @@
+ncpfs is a filesystem which understands the NCP protocol, designed by the
+Novell Corporation for their NetWare(tm) product. NCP is functionally
+similar to the NFS used in the tcp/ip community.
+To mount a Netware-Filesystem, you need a special mount program, which
+can be found in ncpfs package. Homesite for ncpfs is
+ftp.gwdg.de/pub/linux/misc/ncpfs, but sunsite and its many mirrors
+will have it as well.
+
+Related products are linware and mars_nwe, which will give Linux partial
+NetWare Server functionality.
+Linware's home site is: klokan.sh.cvut.cz/pub/linux/linware,
+Mars_nwe can be found on ftp.gwdg.de/pub/linux/misc/ncpfs.
diff --git a/Documentation/filesystems/smbfs.txt b/Documentation/filesystems/smbfs.txt
new file mode 100644
index 000000000..ffef2d814
--- /dev/null
+++ b/Documentation/filesystems/smbfs.txt
@@ -0,0 +1,13 @@
+smbfs is a filesystem which understands the SMB protocol. This is the
+protocol Windows for Workgroups, Windows NT or Lan Manager use to talk
+to each other. smbfs was inspired by samba, the program written by
+Andrew Tridgell that turns any unix host into a file server for DOS or
+Windows clients. See ftp://nimbus.anu.edu.au/pub/tridge/samba/ for
+this interesting program suite and lots of more information on SMB and
+NetBIOS over TCP/IP. There you also find explanation for concepts like
+netbios name or share.
+
+To use smbfs, you need a special mount program, which can be found in
+the ksmbfs package, found on
+sunsite.unc.edu:/pub/Linux/system/Filesystems/smbfs.
+
diff --git a/Documentation/filesystems/sysv-fs.txt b/Documentation/filesystems/sysv-fs.txt
new file mode 100644
index 000000000..d6ba74af0
--- /dev/null
+++ b/Documentation/filesystems/sysv-fs.txt
@@ -0,0 +1,37 @@
+This is the implementation of the SystemV/Coherent filesystem for Linux.
+It implements all of
+ - Xenix FS,
+ - SystemV/386 FS,
+ - Coherent FS.
+
+This is version beta 4.
+
+To install:
+* Answer the 'System V and Coherent filesystem support' question with 'y'
+ when configuring the kernel.
+* To mount a disk or a partition, use
+ mount [-r] -t sysv device mountpoint
+ The file system type names
+ -t sysv
+ -t xenix
+ -t coherent
+ may be used interchangeably, but the last two will eventually disappear.
+
+Bugs in the present implementation:
+- Coherent FS:
+ - The "free list interleave" n:m is currently ignored.
+ - Only file systems with no filesystem name and no pack name are recognized.
+ (See Coherent "man mkfs" for a description of these features.)
+- SystemV Release 2 FS:
+ The superblock is only searched in the blocks 9, 15, 18, which corresponds to the
+ beginning of track 1 on floppy disks. No support for this FS on hard disk yet.
+
+
+Please report any bugs and suggestions to
+ Bruno Haible <haible@ma2s2.mathematik.uni-karlsruhe.de> or
+ Pascal Haible <haible@izfm.uni-stuttgart.de> .
+
+
+Bruno Haible
+<haible@ma2s2.mathematik.uni-karlsruhe.de>
+
diff --git a/Documentation/filesystems/umsdos.txt b/Documentation/filesystems/umsdos.txt
new file mode 100644
index 000000000..320dac6ca
--- /dev/null
+++ b/Documentation/filesystems/umsdos.txt
@@ -0,0 +1,96 @@
+Very short explanation for the impatient!!!
+
+Umsdos is a file system driver that run on top the MSDOS fs driver.
+It is written by Jacques Gelinas (jacques@solucorp.qc.ca)
+
+Umsdos is not a file system per se, but a twist to make a boring
+one into a useful one.
+
+It gives you:
+
+ long file name
+ Permissions and owner
+ Links
+ Special files (devices, pipe...)
+ All is need to be a linux root fs.
+
+There is plenty of documentation on it in the source. A formated document
+made from those comments is available from
+sunsite.unc.edu:/pub/Linux/system/Filesystems/umsdos.
+
+Mostly...
+
+You mount a DOS partition like this
+
+mount -t umsdos /dev/hda3 /mnt
+ ^
+---------|
+
+All option are passed to the msdos drivers. Option like uid,gid etc are
+given to msdos.
+
+The default behavior of Umsdos is to do the same thing as the msdos driver
+mostly passing commands to it without much processing. Again, this is
+the default. After doing the mount on a DOS partition, nothing special
+happen. This is why all mount options are passed to the Msdos fs driver.
+
+Umsdos use a special DOS file --linux-.--- to store the information
+which can't be handle by the normal MsDOS file system. This is the trick.
+
+--linux-.--- is optional. There is one per directory.
+
+**** If --linux-.--- is missing, then Umsdos process the directory the
+ same way the msdos driver do. Short file name, no goodies, default
+ owner and permissions. So each directory may have or not this
+ --linux-.---
+
+Now, how to get those --linux-.---.
+
+\begin joke_section
+
+ Well send me a directory content
+ and I will send you one customised for you.
+ $5 per directory. Add any applicable taxes.
+\end joke_section
+
+A utility umssync creates those. The kernel maintain them. It is available
+from the same directory above (sunsite) in the file umsdos_progs-0.7.tar.gz.
+A compiled version is available in umsdos_progs-0.7.bin.tar.gz.
+
+So in our example, after mounting mnt, we do
+
+umssync .
+
+This will promote this directory (a recursive option is available) to full
+umsdos capabilities (long name ...). A ls -l before and after won't show
+much difference however. The file which were there are still there. But now
+you can do all this:
+
+ chmod 644 *
+ chown you.your_groupe *
+ ls >THIS_IS.A.VERY.LONG.NAME
+ ln -s toto tata
+ ls -l
+
+Once a directory is promoted, all subdirectory created will inherit that
+promotion.
+
+What happen if you boot DOS and create files in those promoted directories ?
+Umsdos won't notice new files, but will signal removed file (it won't crash).
+Using umssync in /etc/rc will make sure the DOS directory is in sync with
+the --linux-.---.
+
+It is a good idea to put the following command in your RC file just
+after the "mount -a":
+
+ mount -a
+ /sbin/umssync -i+ -c+ -r99 /umsdos_mount_point
+
+ (You put one for each umsdos mount point in the fstab)
+
+This will insure nice operation. A umsdos.fsck is in the making,
+so you will be allowed to managed umsdos partition in the same way
+other filesystem are, using the generic fsck front end.
+
+Hope this helps!
+
diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
new file mode 100644
index 000000000..6f03cc799
--- /dev/null
+++ b/Documentation/filesystems/vfat.txt
@@ -0,0 +1,464 @@
+USING VFAT
+----------------------------------------------------------------------
+To use the vfat filesystem, use the filesystem type 'vfat'. i.e.
+ mount -t vfat /dev/fd0 /mnt
+
+No special partition formatter is required. mkdosfs will work fine
+if you want to format from within Linux.
+
+VFAT MOUNT OPTIONS
+----------------------------------------------------------------------
+uni_xlate -- Translate unhandled Unicode characters to special
+ escaped sequences. This would let you backup and
+ restore filenames that are created with any Unicode
+ characters. Until Linux supports Unicode for real,
+ this gives you an alternative. Without this option,
+ a '?' is used when no translation is possible. The
+ escape character is ':' because it is otherwise
+ illegal on the vfat filesystem. The escape sequence
+ that gets used, where u is the unicode character, is:
+ ':', (u & 0x3f), ((u>>6) & 0x3f), (u>>12),
+posix -- Allow names of same letters, different case such as
+ 'LongFileName' and 'longfilename' to coexist. This has some
+ problems currently because 8.3 conflicts are not handled
+ correctly for Posix filesystem compliance.
+nonumtail -- When creating 8.3 aliases, normally the alias will
+ end in '~1' or tilde followed by some number. If this
+ option is set, then if the filename is
+ "longfilename.txt" and "longfile.txt" does not
+ currently exist in the directory, 'longfile.txt' will
+ be the short alias instead of 'longfi~1.txt'.
+
+quiet -- Stops printing certain warning messages.
+
+
+TODO
+----------------------------------------------------------------------
+* Need to get rid of the raw scanning stuff. Instead, always use
+ a get next directory entry approach. The only thing left that uses
+ raw scanning is the directory renaming code.
+
+* Need to add dcache_lookup code msdos filesystem. This means the
+ directories need to be versioned like the vfat filesystem.
+
+* Add support for different codepages. Right now, we only support
+ the a single English codepage.
+
+* Fix the Posix filesystem support to work in 8.3 space. This involves
+ renaming aliases if a conflict occurs between a new filename and
+ an old alias. This is quite a mess.
+
+
+POSSIBLE PROBLEMS
+----------------------------------------------------------------------
+* vfat_valid_longname does not properly checked reserved names.
+* When a volume name is the same as a directory name in the root
+ directory of the filesystem, the directory name sometimes shows
+ up empty an empty file.
+
+BUG REPORTS
+----------------------------------------------------------------------
+If you have trouble with the VFAT filesystem, mail bug reports to
+chaffee@bugs-bunny.cs.berkeley.edu. Please specify the filename
+and the operation that gave you trouble.
+
+TEST SUITE
+----------------------------------------------------------------------
+If you plan to make any modifications to the vfat filesystem, please
+get the test suite that comes with the vfat distribution at
+
+ http://www-plateau.cs.berkeley.edu/people/chaffee/vfat.html
+
+This tests quite a few parts of the vfat filesystem and additional
+tests for new features or untested features would be appreciated.
+
+NOTES ON THE STRUCTURE OF THE VFAT FILESYSTEM
+----------------------------------------------------------------------
+(This documentation was provided by Galen C. Hunt <gchunt@cs.rochester.edu>
+ and lightly annotated by Gordon Chaffee).
+
+This document presents a very rough, technical overview of my
+knowledge of the extended FAT file system used in Windows NT 3.5 and
+Windows 95. I don't guarantee that any of the following is correct,
+but it appears to be so.
+
+The extended FAT file system is almost identical to the FAT
+file system used in DOS versions up to and including 6.223410239847
+:-). The significant change has been the addition of long file names.
+Theses names support up to 255 characters including spaces and lower
+case characters as opposed to the traditional 8.3 short names.
+
+Here is the description of the traditional FAT entry in the current
+Windows 95 filesystem:
+
+ struct directory { // Short 8.3 names
+ unsigned char name[8]; // file name
+ unsigned char ext[3]; // file extension
+ unsigned char attr; // attribute byte
+ unsigned char lcase; // Case for base and extension
+ unsigned char ctime_ms; // Creation time, milliseconds
+ unsigned char ctime[2]; // Creation time
+ unsigned char cdate[2]; // Creation date
+ unsigned char adate[2]; // Last access date
+ unsigned char reserved[2]; // reserved values (ignored)
+ unsigned char time[2]; // time stamp
+ unsigned char date[2]; // date stamp
+ unsigned char start[2]; // starting cluster number
+ unsigned char size[4]; // size of the file
+ };
+
+The lcase field specifies if the base and/or the extension of an 8.3
+name should be capitalized. This field does not seem to be used by
+Windows 95 but it is used by Windows NT. The case of filenames is not
+completely compatible from Windows NT to Windows 95. It is not completely
+compatible in the reverse direction, however. Filenames that fit in
+the 8.3 namespace and are written on Windows NT to be lowercase will
+show up as uppercase on Windows 95.
+
+Note that the "start" and "size" values are actually little
+endian integer values. The descriptions of the fields in this
+structure are public knowledge and can be found elsewhere.
+
+With the extended FAT system, Microsoft has inserted extra
+directory entries for any files with extended names. (Any name which
+legally fits within the old 8.3 encoding scheme does not have extra
+entries.) I call these extra entries slots. Basically, a slot is a
+specially formatted directory entry which holds up to 13 characters of
+a files extended name. Think of slots as additional labeling for the
+directory entry of the file to which they correspond. Microsoft
+prefers to refer to the 8.3 entry for a file as its alias and the
+extended slot directory entries as the file name.
+
+The C structure for a slot directory entry follows:
+
+ struct slot { // Up to 13 characters of a long name
+ unsigned char id; // sequence number for slot
+ unsigned char name0_4[10]; // first 5 characters in name
+ unsigned char attr; // attribute byte
+ unsigned char reserved; // always 0
+ unsigned char alias_checksum; // checksum for 8.3 alias
+ unsigned char name5_10[12]; // 6 more characters in name
+ unsigned char start[2]; // starting cluster number
+ unsigned char name11_12[4]; // last 2 characters in name
+ };
+
+If the layout of the slots looks a little odd, it's only
+because of Microsoft's efforts to maintain compatibility with old
+software. The slots must be disguised to prevent old software from
+panicing. To this end, a number of measures are taken:
+
+ 1) The attribute byte for a slot directory entry is always set
+ to 0x0f. This corresponds to an old directory entry with
+ attributes of "hidden", "system", "read-only", and "volume
+ label". Most old software will ignore any directory
+ entries with the "volume label" bit set. Real volume label
+ entries don't have the other three bits set.
+
+ 2) The starting cluster is always set to 0, an impossible
+ value for a DOS file.
+
+Because the extended FAT system is backward compatible, it is
+possible for old software to modify directory entries. Measures must
+be taken to insure the validity of slots. An extended FAT system can
+verify that a slot does in fact belong to an 8.3 directory entry by
+the following:
+
+ 1) Positioning. Slots for a file always immediately proceed
+ their corresponding 8.3 directory entry. In addition, each
+ slot has an id which marks its order in the extended file
+ name. Here is a very abbreviated view of an 8.3 directory
+ entry and its corresponding long name slots for the file
+ "My Big File.Extension which is long":
+
+ <proceeding files...>
+ <slot #3, id = 0x43, characters = "h is long">
+ <slot #2, id = 0x02, characters = "xtension whic">
+ <slot #1, id = 0x01, characters = "My Big File.E">
+ <directory entry, name = "MYBIGFIL.EXT">
+
+ Note that the slots are stored from last to first. Slots
+ are numbered from 1 to N. The Nth slot is or'ed with 0x40
+ to mark it as the last one.
+
+ 2) Checksum. Each slot has an "alias_checksum" value. The
+ checksum is calculated from the 8.3 name using the
+ following algorithm:
+
+ for (sum = i = 0; i < 11; i++) {
+ sum = (((sum&1)<<7)|((sum&0xfe)>>1)) + name[i]
+ }
+
+ 3) If there is in the final slot, a Unicode NULL (0x0000) is stored
+ after the final character. After that, all unused characters in
+ the final slot are set to Unicode 0xFFFF.
+
+Finally, note that the extended name is stored in Unicode. Each Unicode
+character takes two bytes.
+
+
+NOTES ON UNICODE TRANSLATION IN VFAT FILESYSTEM
+----------------------------------------------------------------------
+(Information provided by Steve Searle <steve@mgu.bath.ac.uk>)
+
+Char used as Char(s) used Char(s) used in Entries which have
+filename in shortname longname slot been corrected
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+0x97 (151) 0xEB 0xF9
+0x98 (152) "_~1" 0xFF
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+0xCF (207) 0xCF 0xA4 E
+0xD0 (208) 0xD1 0xF0
+0xD1 (209) 0xD1 0xD0
+0xD2 (210) 0xD2 0xCA
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+0xDE (222) 0xDE 0xCC
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+0xFD (253) 0xFD 0xB2
+0xFE (254) 0xFE 0xA0 0x25
+0xFF (255) 0xFF 0xA0
+
+
+Page 0
+0x80 (128) 0x00
+0x81 (129) 0x00
+0x82 (130) 0x00
+0x83 (131) 0x00
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+0x85 (133) 0x00
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+0xB8 (184) 0xF7
+0xB9 (185) 0xFB
+0xBA (186) 0x00
+0xBB (187) 0xAF
+0xBC (188) 0xAC
+0xBD (189) 0xAB
+0xBE (190) 0xF3
+0xBF (191) 0x00
+0xC0 (192) 0xB7
+0xC1 (193) 0xB5
+0xC2 (194) 0xB6
+0xC3 (195) 0xC7
+0xC4 (196) 0x8E
+0xC5 (197) 0x8F
+0xC6 (198) 0x92
+0xC7 (199) 0x80
+0xC8 (200) 0xD4
+0xC9 (201) 0x90
+0xCA (202) 0xD2
+0xCB (203) 0xD3
+0xCC (204) 0xDE
+0xCD (205) 0xD6
+0xCE (206) 0xD7
+0xCF (207) 0xD8
+0xD0 (208) 0x00
+0xD1 (209) 0xA5
+0xD2 (210) 0xE3
+0xD3 (211) 0xE0
+0xD4 (212) 0xE2
+0xD5 (213) 0xE5
+0xD6 (214) 0x99
+0xD7 (215) 0x9E
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+0xDA (218) 0xE9
+0xDB (219) 0xEA
+0xDC (220) 0x9A
+0xDD (221) 0xED
+0xDE (222) 0xE8
+0xDF (223) 0xE1
+0xE0 (224) 0x85, 0xA1
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+0xF8 (248) 0x9B
+0xF9 (249) 0x97
+0xFA (250) 0xA3
+0xFB (251) 0x96
+0xFC (252) 0x81
+0xFD (253) 0xEC
+0xFE (254) 0xE7
+0xFF (255) 0x98
+