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<samba:parameter name="mangled names"
type="enum"
enumlist="enum_mangled_names"
context="S"
parm="1"
xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
<para>This controls whether non-DOS names under UNIX
should be mapped to DOS-compatible names ("mangled") and made visible,
or whether non-DOS names should simply be ignored.</para>
<para>See the section on <link linkend="NAMEMANGLINGSECT">name mangling</link> for
details on how to control the mangling process.</para>
<para>Possible option settings are</para>
<itemizedlist>
<listitem><para><emphasis>yes</emphasis> -
enables name mangling for all not DOS 8.3 conforming
names.</para></listitem>
<listitem><para><emphasis>no</emphasis> - disables any
name mangling.</para></listitem>
<listitem><para><emphasis>illegal (default)</emphasis> - does
mangling for names with illegal NTFS characters. This
is the most sensible setting for modern clients that
don't use the shortname anymore.</para></listitem>
</itemizedlist>
<para>If mangling is used then the mangling method is as follows:</para>
<itemizedlist>
<listitem>
<para>The first (up to) five alphanumeric characters
before the rightmost dot of the filename are preserved, forced
to upper case, and appear as the first (up to) five characters
of the mangled name.</para>
</listitem>
<listitem>
<para>A tilde "~" is appended to the first part of the mangled
name, followed by a two-character unique sequence, based on the
original root name (i.e., the original filename minus its final
extension). The final extension is included in the hash calculation
only if it contains any upper case characters or is longer than three
characters.</para>
<para>Note that the character to use may be specified using
the <smbconfoption name="mangling char"/>
option, if you don't like '~'.</para>
</listitem>
<listitem>
<para>Files whose UNIX name begins with a dot will be
presented as DOS hidden files. The mangled name will be created as
for other filenames, but with the leading dot removed and "___" as
its extension regardless of actual original extension (that's three
underscores).</para>
</listitem>
</itemizedlist>
<para>The two-digit hash value consists of upper case alphanumeric characters.</para>
<para>This algorithm can cause name collisions only if files
in a directory share the same first five alphanumeric characters.
The probability of such a clash is 1/1300.</para>
<para>The name mangling (if enabled) allows a file to be
copied between UNIX directories from Windows/DOS while retaining
the long UNIX filename. UNIX files can be renamed to a new extension
from Windows/DOS and will retain the same basename. Mangled names
do not change between sessions.</para>
</description>
<value type="default">illegal</value>
<value type="example">no</value>
</samba:parameter>
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