<samba:parameter name="mangled names"
context="S"
xmlns:samba="http://samba.org/common">
<listitem>
<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>If mangling is used then the mangling algorithm 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 <link linkend="MANGLINGCHAR"><parameter moreinfo="none">mangling char</parameter>
</link> option, if you don't like '~'.</para>
</listitem>
<listitem>
<para>The first three alphanumeric characters of the final
extension are preserved, forced to upper case and appear as the
extension of the mangled name. The final extension is defined as that
part of the original filename after the rightmost dot. If there are no
dots in the filename, the mangled name will have no extension (except
in the case of "hidden files" - see below).</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>
<para>Default: <command moreinfo="none">mangled names = yes</command></para>
</listitem>
</samba:parameter>