<?xml version="1.0" encoding="UTF-8"?>
<refentry id="afp.conf.5">
  <refmeta>
    <refentrytitle>afp.conf</refentrytitle>

    <manvolnum>5</manvolnum>

    <refmiscinfo class="date">12 Sep 2024</refmiscinfo>

    <refmiscinfo class="source">Netatalk</refmiscinfo>

    <refmiscinfo class="manual">Netatalk AFP Fileserver Manual</refmiscinfo>

    <refmiscinfo class="version">@netatalk_version@</refmiscinfo>
  </refmeta>

  <refnamediv>
    <refname>afp.conf</refname>

    <refpurpose>Netatalk configuration file</refpurpose>
  </refnamediv>

  <refsect1>
    <title>Synopsis</title>

    <para>The <filename>afp.conf</filename> file is the configuration file for
    the <emphasis role="bold">Netatalk</emphasis> AFP file server.</para>

    <para>All AFP-specific configurations and AFP volume definitions are done
    via this file.</para>
  </refsect1>

  <refsect1 id="FILEFORMATSECT">
    <title>File Format</title>

    <para>The file consists of sections and parameters. A section begins with
    the name of the section in square brackets and continues until the next
    section begins. Sections contain parameters of the form:<programlisting>
    <replaceable>name</replaceable> = <replaceable>value </replaceable>
    </programlisting></para>

    <para>The file is line-based - that is, each newline-terminated line
    represents either a comment, a section name or a parameter.</para>

    <para>Section and parameter names are case sensitive.</para>

    <para>Only the first equals sign in a parameter is significant. Whitespace
    before or after the first equals sign is discarded. Leading, trailing and
    internal whitespace in section and parameter names is irrelevant. Leading
    and trailing whitespace in a parameter value is discarded. Internal
    whitespace within a parameter value is retained verbatim.</para>

    <para>Any line beginning with a semicolon (<quote>;</quote>) or a hash
    (<quote>#</quote>) character is ignored, as are lines containing only
    whitespace.</para>

    <para>Any line ending in a <quote> <literal>\</literal> </quote> is
    continued on the next line in the customary UNIX fashion.</para>

    <para>The values following the equals sign in parameters are all either a
    string (no quotes needed) or a boolean, which may be given as yes/no, 1/0
    or true/false. Case is not significant in boolean values, but is preserved
    in string values. Some items such as "file perm"s are numeric.</para>

    <para>The parameter <option>include =
    <replaceable>path</replaceable></option> allows you to include one config
    file inside another. The file is included literally, as though typed in
    place. Nested includes are not supported.</para>
  </refsect1>

  <refsect1>
    <title>Section Descriptions</title>

    <para>Each section in the configuration file (except for the [Global]
    section) describes a shared resource (known as a <quote>volume</quote>).
    The section name is the name of the volume and the parameters within the
    section define the volume attributes and options.</para>

    <para>There are two special sections, [Global] and [Homes], which are
    described under <emphasis>special sections</emphasis>. The following notes
    apply to ordinary section descriptions.</para>

    <para>A volume consists of a directory to which access is being given plus
    a description of the access rights which are granted to the user of the
    service. For volumes the <option>path</option> option must specify the
    directory to share.</para>

    <para>Any volume section without <option>path</option> option is
    considered a <emphasis>vol preset</emphasis> which can be selected in
    other volume sections via the <option>vol preset</option> option and
    constitutes defaults for the volume. For any option specified both in a
    preset <emphasis>and</emphasis> in a volume section the volume section
    setting completely substitutes the preset option.</para>

    <para>The access rights granted by the server are masked by the access
    rights granted to the specified or guest UNIX user by the host system. The
    server does not grant more access than the host system grants.</para>

    <para>The following sample section defines an AFP volume. The user has
    full access to the path <filename>/foo/bar</filename>. The share is
    accessed via the share name <literal>baz</literal>: <programlisting> [baz]
    path = /foo/bar </programlisting></para>
  </refsect1>

  <refsect1>
    <title>Special Sections</title>

    <refsect2>
      <title>The [Global] section</title>

      <para>Parameters in this section apply to the server as a whole.
      Parameters denoted by a (G) below are must be set in this
      section.</para>
    </refsect2>

    <refsect2>
      <title>The [Homes] section</title>

      <para>This section enable sharing of the UNIX server user home
      directories. Specifying an optional <option>path</option> parameter
      means that not the whole user home will be shared but the subdirectory
      <option>path</option>. It is necessary to define the <option>basedir
      regex</option> option. It should be a regex which matches the parent
      directory of the user homes. Parameters denoted by a (H) belong to
      volume sections. The optional parameter <option>home name</option> can
      be used to change the AFP volume name which <emphasis>$u's
      home</emphasis> by default. See below under VARIABLE
      SUBSTITUTIONS.</para>

      <para>The following example illustrates this. Given all user home
      directories are stored under <filename>/home</filename>:
      <programlisting> [Homes]
      path = afp-data
      basedir regex = /home</programlisting> For a user
      <emphasis>john</emphasis> this results in an AFP home volume with a path
      of <filename>/home/john/afp-data</filename>.</para>

      <para>If <option>basedir regex</option> contains symlink, set the
      canonicalized absolute path. When <filename>/home</filename> links to
      <filename>/usr/home</filename>: <programlisting> [Homes]
      basedir regex = /usr/home</programlisting></para>
    </refsect2>
  </refsect1>

  <refsect1>
    <title>Parameters</title>

    <para>Parameters define the specific attributes of sections.</para>

    <para>Some parameters are specific to the [Global] section (e.g.,
    <emphasis>log type</emphasis>). All others are permissible only in volume
    sections. The letter <emphasis>G</emphasis> in parentheses indicates that
    a parameter is specific to the [Global] section. The letter
    <emphasis>V</emphasis> indicates that a parameter can be specified in a
    volume specific section.</para>
  </refsect1>

  <refsect1>
    <title>Variable Substitutions</title>

    <para>You can use variables in volume names. The use of variables in paths
    is limited to $u.</para>

    <orderedlist>
      <listitem>
        <para>if you specify an unknown variable, it will not get
        converted.</para>
      </listitem>

      <listitem>
        <para>if you specify a known variable, but that variable doesn't have
        a value, it will get ignored.</para>
      </listitem>
    </orderedlist>

    <para>The variables which can be used for substitutions are:</para>

    <variablelist>
      <varlistentry>
        <term>$b</term>

        <listitem>
          <para>basename</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$c</term>

        <listitem>
          <para>client's ip address</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$d</term>

        <listitem>
          <para>volume pathname on server</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$f</term>

        <listitem>
          <para>full name (contents of the gecos field in the passwd
          file)</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$g</term>

        <listitem>
          <para>group name</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$h</term>

        <listitem>
          <para>hostname</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$i</term>

        <listitem>
          <para>client's ip, without port</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$s</term>

        <listitem>
          <para>server name (this can be the hostname)</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$u</term>

        <listitem>
          <para>user name (if guest, it is the user that guest is running
          as)</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$v</term>

        <listitem>
          <para>volume name</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>$$</term>

        <listitem>
          <para>prints dollar sign ($)</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>Explanation of Global Parameters</title>

    <refsect2>
      <title>Authentication Options</title>

      <variablelist>
        <varlistentry>
          <term>ad domain = <parameter>DOMAIN</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Append @DOMAIN to username when authenticating. Useful in
            Active Directory environments that otherwise would require the
            user to enter the full user@domain string.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>admin auth user = <parameter>user</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Specifying e.g. "<option>admin auth user = root</option>"
            whenever a normal user login fails, afpd will try to authenticate
            as the specified <option>admin auth user</option>. If this
            succeeds, a normal session is created for the original connecting
            user. Said differently: if you know the password of <option>admin
            auth user</option>, you can authenticate as any other user.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>admin group = <replaceable>group</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Allows users of a certain group to be seen as the superuser
            when they log in. This option is disabled by default.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>force user = <replaceable>USER</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>This specifies a UNIX user name that will be assigned as the
            default user for all users connecting to this server. This is
            useful for sharing files. You should also use it carefully as
            using it incorrectly can cause security problems.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>force group = <replaceable>GROUP</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>This specifies a UNIX group name that will be assigned as
            the default primary group for all users connecting to this
            server.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>k5 keytab = <replaceable>path</replaceable>
          <type>(G)</type></term>

          <term>k5 service = <replaceable>service</replaceable>
          <type>(G)</type></term>

          <term>k5 realm = <replaceable>realm</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>These are required if the server supports the Kerberos 5
            authentication UAM.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>nt domain = <parameter>DOMAIN</parameter>
          <type>(G)</type></term>

          <term>nt separator = <parameter>SEPARATOR</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Use for e.g. winbind authentication, prepends both strings
            before the username from login and then tries to authenticate with
            the result through the available and active UAM authentication
            modules.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>save password = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Enables or disables the ability of clients to save passwords
            locally.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>set password = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Enables or disables the ability of clients to change their
            passwords via chooser or the "connect to server" dialog.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>uam list = <replaceable>uam list</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Space or comma separated list of UAMs. (The default is
            "uams_dhx.so uams_dhx2.so").</para>

            <para>The most commonly used UAMs are:</para>

            <variablelist>
              <varlistentry>
                <term>uams_guest.so</term>

                <listitem>
                  <para>allows guest logins</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>uams_clrtxt.so</term>

                <listitem>
                  <para>(uams_pam.so or uams_passwd.so) Allow logins with
                  passwords transmitted in the clear. (legacy)</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>uams_randnum.so</term>

                <listitem>
                  <para>allows Random Number and Two-Way Random Number
                  Exchange for authentication (requires a separate file
                  containing the passwords, either the default afppasswd file
                  or the one specified via "<option>passwd file</option>").
                  See <citerefentry>
                      <refentrytitle>afppasswd</refentrytitle>

                      <manvolnum>1</manvolnum>
                    </citerefentry> for details. (legacy)</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>uams_dhx.so</term>

                <listitem>
                  <para>(uams_dhx_pam.so or uams_dhx_passwd.so) Allow
                  Diffie-Hellman eXchange (DHX) for authentication.</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>uams_dhx2.so</term>

                <listitem>
                  <para>(uams_dhx2_pam.so or uams_dhx2_passwd.so) Allow
                  Diffie-Hellman eXchange 2 (DHX2) for authentication.</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>uam_gss.so</term>

                <listitem>
                  <para>Allow Kerberos V for authentication (optional)</para>
                </listitem>
              </varlistentry>
            </variablelist>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>uam path = <replaceable>path</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the default path for UAMs for this server.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Charset Options</title>

      <para>With OS X Apple introduced the AFP3 protocol. One of the big
      changes was, that AFP3 uses Unicode names encoded as Decomposed UTF-8
      (UTF8-MAC). Previous AFP/OS versions used charsets like MacRoman,
      MacCentralEurope, etc.</para>

      <para>To be able to serve AFP3 and older clients at the same time,
      <command>afpd</command> needs to be able to convert between UTF-8 and
      Mac charsets. Even OS X clients partly still rely on the mac charset. As
      there's no way, <command>afpd</command> can detect the codepage a pre
      AFP3 client uses, you have to specify it using the <option>mac
      charset</option> option. The default is MacRoman, which should be fine
      for most western users.</para>

      <para>As <command>afpd</command> needs to interact with UNIX operating
      system as well, it needs to be able to convert from UTF8-MAC / Mac
      charset to the UNIX charset. By default <command>afpd</command> uses
      <emphasis>UTF8</emphasis>. You can set the UNIX charset using the
      <option>unix charset</option> option. If you're using extended
      characters in the configuration files for <command>afpd</command>, make
      sure your terminal matches the <option>unix charset</option>.</para>

      <variablelist>
        <varlistentry>
          <term>mac charset = <parameter>CHARSET</parameter>
          <type>(G)/(V)</type></term>

          <listitem>
            <para>Specifies the Mac clients charset, e.g.
            <emphasis>MAC_ROMAN</emphasis>. This is used to convert strings
            and filenames to the clients codepage for OS9 and Classic, i.e.
            for authentication and AFP messages (SIGUSR2 messaging). This will
            also be the default for the volumes <option>mac charset</option>.
            Defaults to <emphasis>MAC_ROMAN</emphasis>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>unix charset = <parameter>CHARSET</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies the servers unix charset, e.g.
            <emphasis>ISO-8859-15</emphasis> or <emphasis>EUC-JP</emphasis>.
            This is used to convert strings to/from the systems locale, e.g.
            for authentication, server messages and volume names. If
            <emphasis>LOCALE</emphasis> is set, the systems locale is used.
            Defaults to <emphasis>UTF8</emphasis>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>vol charset = <parameter>CHARSET</parameter>
          <type>(G)/(V)</type></term>

          <listitem>
            <para>Specifies the encoding of the volumes filesystem. By
            default, it is the same as <option>unix charset</option>.</para>

            <note>
              <para>It is highly recommended to stick to the default UTF-8
              encoding.</para>
            </note>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Password Options</title>

      <variablelist>
        <varlistentry>
          <term>passwd file = <parameter>path</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the path to the Randnum UAM passwd file for this
            server.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>passwd minlen = <parameter>number</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the minimum password length, if supported by the
            UAM</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Network Options</title>

      <variablelist>
        <varlistentry>
          <term>advertise ssh = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Allows old Mac OS X clients (10.3.3-10.4) to automagically
            establish a tunneled AFP connection through SSH. If this option is
            set, the server's answers to client's FPGetSrvrInfo requests
            contain an additional entry. It depends on both client's settings
            and a correctly configured and running <citerefentry>
                <refentrytitle>sshd</refentrytitle>

                <manvolnum>8</manvolnum>
              </citerefentry> on the server to let things work.</para>

            <note>
              <para>Setting this option is not recommended since globally
              encrypting AFP connections via SSH will increase the server's
              load significantly. On the other hand, Apple's client side
              implementation of this feature in MacOS X versions prior to
              10.3.4 contained a security flaw.</para>
            </note>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>afp interfaces = <replaceable>name [name ...]</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies the network interfaces that the server should
            listen on. The default is to advertise the first IP address of the
            system, while listening for any incoming request.</para>

            <note>
              <para>Do not use at the same time as the <option>afp
              listen</option> option.</para>
            </note>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>afp listen = <replaceable>ip address[:port] [ip address[:port]
          ...]</replaceable> <type>(G)</type></term>

          <listitem>
            <para>Specifies the IP address that the server should advertise
            <emphasis role="bold">and</emphasis> listens to. The default is
            advertise the first IP address of the system, but to listen for
            any incoming request. The network address may be specified either
            in dotted-decimal format for IPv4 or in hexadecimal format for
            IPv6.</para>

            <para>IPv6 address + port combination must use URL the format
            using square brackets [IPv6]:port</para>

            <note>
              <para>Do not use at the same time as the <option>afp
              interfaces</option> option.</para>
            </note>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>afp port = <replaceable>port number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Allows a different TCP port to be used for AFP. The default
            is 548. Also sets the default port applied when none specified in
            an <option>afp listen</option> option.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>appletalk = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Enables support for AFP-over-Appletalk. This option requires
            that your operating system supports the AppleTalk networking
            protocol.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid listen = <replaceable>ip address[:port] [ip
          address[:port] ...]</replaceable> <type>(G)</type></term>

          <listitem>
            <para>Specifies the IP address that the CNID server should listen
            on. The default is <emphasis
            role="bold">localhost:4700</emphasis>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ddp address = <replaceable>ddp address</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies the DDP address of the server. The default is to
            auto-assign an address (0.0). This is only useful if you are
            running AppleTalk on more than one interface.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ddp zone = <replaceable>ddp zone</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies the AppleTalk zone to register the server in. The
            default is to register the server in the default zone of the last
            interface configured by the system.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>disconnect time = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Keep disconnected AFP sessions for
            <parameter>number</parameter> hours before dropping them. Default
            is 24 hours.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>dsireadbuf = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Scale factor that determines the size of the DSI/TCP
            readahead buffer, default is 12. This is multiplies with the DSI
            server quantum (default 1MiB) to give the size of the buffer.
            Increasing this value might increase throughput in fast local
            networks for volume to volume copies. <emphasis>Note</emphasis>:
            This buffer is allocated per afpd child process, so specifying
            large values will eat up large amount of memory (buffer size *
            number of clients).</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fqdn = <replaceable>name[:port]</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies a fully-qualified domain name, with an optional
            port. This is discarded if the server cannot resolve it. This
            option is not honored by AppleShare clients &lt;= 3.8.3. This
            option is disabled by default. Use with caution as this will
            involve a second name resolution step on the client side. Also
            note that afpd will advertise this name:port combination but not
            automatically listen to it.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>hostname = <replaceable>name</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Use this instead of the result from calling hostname for
            determining which IP address to advertise, therefore the hostname
            is resolved to an IP which is the advertised. This is NOT used for
            listening and it is also overwritten by <option>afp
            listen</option>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>max connections = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the maximum number of clients that can simultaneously
            connect to the server (default is 200).</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>server quantum = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>This specifies the DSI server quantum. The default value is
            0x100000 (1 MiB). The maximum value is 0xFFFFFFFFF, the minimum is
            32000. If you specify a value that is out of range, the default
            value will be set. Do not change this value unless you're
            absolutely sure, what you're doing</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>sleep time = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Keep sleeping AFP sessions for <parameter>number</parameter>
            hours before disconnecting clients in sleep mode. Default is 10
            hours.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>tcprcvbuf = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Try to set TCP receive buffer using setsockopt(). Often OSes
            impose restrictions on the applications ability to set this
            value.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>tcpsndbuf = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Try to set TCP send buffer using setsockopt(). Often OSes
            impose restrictions on the applications ability to set this
            value.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>recvfile = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to use splice() on Linux for receiving data.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>splice size = <replaceable>number</replaceable> (default:
          <emphasis>64k</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Maximum number of bytes spliced.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>use sendfile = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to use sendfile<indexterm>
                <primary>sendfile</primary>
              </indexterm> syscall for sending file data to clients.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>zeroconf = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to use automatic Zeroconf<indexterm>
                <primary>Zeroconf</primary>

                <secondary>Bonjour</secondary>
              </indexterm> service registration if Avahi or mDNSResponder were
            compiled in.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Miscellaneous Options</title>

      <variablelist>
        <varlistentry>
          <term>afp read locks = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to apply locks to the byte region read in FPRead
            calls. The AFP spec mandates this, but it's not really in line
            with UNIX semantics and is a performance hug.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>afpstats = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to provide AFP runtime statistics (connected users,
            open volumes) via dbus.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>basedir regex = <replaceable>regex</replaceable>
          <type>(H)</type></term>

          <listitem>
            <para>Regular expression which matches the parent directory of the
            user homes. If <option>basedir regex</option> contains symlink,
            you must set the canonicalized absolute path. In the simple case
            this is just a path i.e. <option>basedir regex =
            /home</option></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>chmod request = <replaceable>preserve (default) | ignore |
          simple</replaceable> <type>(G)/(V)</type></term>

          <listitem>
            <para>Advanced permission control that deals with ACLs.</para>

            <itemizedlist>
              <listitem>
                <para><option>ignore</option> - UNIX chmod() requests are
                completely ignored, use this option to allow the parent
                directory's ACL inheritance full control over new
                items.</para>
              </listitem>

              <listitem>
                <para><option>preserve</option> - preserve ZFS ACEs for named
                users and groups or POSIX ACL group mask</para>
              </listitem>

              <listitem>
                <para><option>simple</option> - just to a chmod() as requested
                without any extra steps</para>
              </listitem>
            </itemizedlist>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>close vol = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to close volumes possibly opened by clients when
            they're removed from the configuration and the configuration is
            reloaded.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid mysql host = <replaceable>MySQL server
          address</replaceable> <type>(G)</type></term>

          <listitem>
            <para>name or address of a MySQL server for use with the mysql
            CNID backend.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid mysql user = <replaceable>MySQL user</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>MySQL user for authentication with the server.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid mysql pw = <replaceable>password</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Password for MySQL server.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid mysql db = <replaceable>database name</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Name of an existing database for which the specified user
            has full privileges.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid server = <replaceable>ipaddress[:port]</replaceable>
          <type>(G)/(V)</type></term>

          <listitem>
            <para>Specifies the IP address and port of a cnid_metad server,
            required for CNID dbd backend. Defaults to localhost:4700. The
            network address may be specified either in dotted-decimal format
            for IPv4 or in hexadecimal format for IPv6.-</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>dbus daemon = <parameter>path</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the path to dbus-daemon binary used by the Spotlight
            feature. Can be used when the compile-time default path does not
            match the runtime environment.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>dircachesize = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Maximum possible entries in the directory cache. The cache
            stores directories and files. It is used to cache the full path to
            directories and CNIDs which considerably speeds up directory
            enumeration.</para>

            <para>Default size is 8192, maximum size is 131072. Given value is
            rounded up to nearest power of 2. Each entry takes about 100
            bytes, which is not much, but remember that every afpd child
            process for every connected user has its cache.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>extmap file = <parameter>path</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the path to the file which defines file extension
            type/creator mappings.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>force xattr with sticky bit =
          <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G/V)</type></term>

          <listitem>
            <para>Writing metadata xattr on directories with the sticky bit
            set may fail even though we may have write access to a directory,
            because if the sticky bit is set only the owner is allowed to
            write xattrs.</para>

            <para>By enabling this option Netatalk will write the metadata
            xattr as root.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>guest account = <replaceable>name</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies the user that guests should use (default is
            nobody). The name must be a valid user on the host system.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>home name = <replaceable>name</replaceable>
          <type>(H)</type></term>

          <listitem>
            <para>AFP user home volume name. The default is <emphasis>$u's
            home</emphasis>. The name must contain
            "<emphasis>$u</emphasis>".</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ignored attributes = <replaceable>all | nowrite | nodelete |
          norename</replaceable> <type>(G)/(V)</type></term>

          <listitem>
            <para>Specify a set of file and directory attributes that shall be
            ignored by the server, <option>all</option> includes all the other
            options.</para>

            <para>In OS X when the Finder sets a lock on a file/directory or
            you set the BSD uchg flag in the Terminal, all three attributes
            are used. Thus in order to ignore the Finder lock/BSD uchg flag,
            add set <emphasis>ignored attributes = all</emphasis>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>legacy icon = <replaceable>icon</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the shared volume icon displayed in the Finder in
            Classic Mac OS. Note that some versions of Classic Mac OS ignores
            this icon. Examples of valid icon styles:</para>

            <itemizedlist>
              <listitem>
                <para><option>daemon</option></para>
              </listitem>

              <listitem>
                <para><option>globe</option></para>
              </listitem>

              <listitem>
                <para><option>sdcard</option></para>
              </listitem>
            </itemizedlist>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>login message = <replaceable>message</replaceable>
          <type>(G)/(V)</type></term>

          <listitem>
            <para>Sets a message to be displayed when clients logon to the
            server. The message should be in <option>unix charset</option>.
            Extended characters are allowed.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>mimic model = <replaceable>model</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies a custom icon for the mounted AFP volume on macOS
            / Mac OS X clients. Default is to let macOS choose. Requires
            netatalk to be built with Zeroconf. Examples:</para>

            <itemizedlist>
              <listitem>
                <para><option>Laptop</option></para>
              </listitem>

              <listitem>
                <para><option>RackMount</option></para>
              </listitem>

              <listitem>
                <para><option>Tower</option></para>
              </listitem>
            </itemizedlist>

            <para>A complete set of supported model codes by a macOS client
            can be found by inspecting
            <filename>/System/Library/CoreServices/CoreTypes.bundle/Contents/Info.plist
            </filename> (as of macOS 14 Sonoma).</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>signature = <replaceable>STRING</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specify a server signature. The maximum length is 16
            characters. This option is useful for clustered environments, to
            provide fault isolation etc. By default, afpd generates a
            signature and saves it to a file called
            <filename>afp_signature.conf</filename> automatically (based on
            random numbers). See also asip-status(1).</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>solaris share reservations =
          <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Use share reservations on Solaris. Solaris CIFS server uses
            this too, so this makes a lock coherent multi protocol
            server.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>sparql results limit = <replaceable>NUMBER</replaceable>
          (default: <emphasis>UNLIMITED</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Impose a limit on the number of results queried from Tracker
            or LocalSearch via SPARQL queries.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>spotlight = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)/(V)</type></term>

          <listitem>
            <para>Whether to enable Spotlight searches. Note: once the global
            option is enabled, any volume that is not enabled won't be
            searchable at all. See also <emphasis>dbus daemon</emphasis>
            option.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>spotlight attributes = <replaceable>COMMA SEPARATED
          STRING</replaceable> (default: <emphasis>EMPTY</emphasis>)
          <type>(G)</type></term>

          <listitem>
            <para>A list of attributes that are allowed to be used in
            Spotlight searches. By default all attributes can be searched,
            passing a string limits attributes to elements of the string.
            Example: <programlisting>spotlight attributes = *,kMDItemTextContent</programlisting></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>spotlight expr = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Whether to allow the use of logic expression in
            searches.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>veto message = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Send optional AFP messages for vetoed files. Then whenever a
            client tries to access any file or directory with a vetoed name,
            it will be sent an AFP message indicating the name and the
            directory.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>vol dbpath = <replaceable>path</replaceable>
          <type>(G)/(V)</type></term>

          <listitem>
            <para>Sets the path where the database information will be stored.
            You have to specify a writable location, even if the volume is
            read only.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>vol dbnest = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Setting this option to true brings back Netatalk 2 behaviour
            of storing the CNID database in a folder called .AppleDB inside
            the volume root of each share.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>volnamelen = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Max length of UTF8-MAC volume name for Mac OS X. Note that
            Hangul is especially sensitive to this.</para>

            <para><programlisting>73: limit of Mac OS X 10.1
80: limit of Mac OS X 10.4/10.5 (default)
255: limit of recent Mac OS X</programlisting> Mac OS 9 and earlier are not
            influenced by this, because Maccharset volume name is always
            limited to 27 bytes.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>vol preset = <replaceable>name</replaceable>
          <type>(G)/(V)</type></term>

          <listitem>
            <para>Use section <option>name</option> as option preset for all
            volumes (when set in the [Global] section) or for one volume (when
            set in that volume's section).</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>zeroconf name = <replaceable>name</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies a human-readable name that uniquely describes
            registered services. The zeroconf name is advertised as UTF-8, up
            to 63 octets (bytes) in length. Defaults to hostname. Note that
            netatalk must support Zeroconf.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Logging Options</title>

      <variablelist>
        <varlistentry>
          <term>log file = <replaceable>logfile</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Write logs to <option>logfile</option> on the file system.
            If not specified, Netatalk logs to the syslog daemon
            facility.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>log level = <replaceable>type:level [type:level
          ...]</replaceable> <type>(G)</type></term>

          <term>log level = <replaceable>type:level,[type:level,
          ...]</replaceable> <type>(G)</type></term>

          <listitem>
            <para>Specify that any message of a loglevel up to the given
            <option>log level</option> should be logged.</para>

            <para>By default afpd logs to syslog with a default logging setup
            equivalent to <option>default:note</option></para>

            <para>logtypes: default, afpdaemon, logger, uamsdaemon</para>

            <para>loglevels: severe, error, warn, note, info, debug, debug6,
            debug7, debug8, debug9, maxdebug</para>

            <note>
              <para>Both logtype and loglevels are case insensitive.</para>
            </note>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>log microseconds = <replaceable>BOOLEAN</replaceable>
          (default: <emphasis>yes</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>Log timestamps with accuracy down to microseconds. If
            disabled, the timestamps record only whole seconds. Only takes
            effect when used in tandem with the <option>log file</option>
            option.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2 id="fceconf">
      <title>Filesystem Change Events (FCE<indexterm>
          <primary>FCE</primary>
        </indexterm>)</title>

      <para>Netatalk includes a nifty filesystem change event mechanism where
      afpd processes notify interested listeners about certain filesystem
      event by UDP network datagrams.</para>

      <para>The following FCE events are defined:</para>

      <itemizedlist>
        <listitem>
          <para>file modification (<option>fmod</option>)</para>
        </listitem>

        <listitem>
          <para>file deletion (<option>fdel</option>)</para>
        </listitem>

        <listitem>
          <para>directory deletion (<option>ddel</option>)</para>
        </listitem>

        <listitem>
          <para>file creation (<option>fcre</option>)</para>
        </listitem>

        <listitem>
          <para>directory creation (<option>dcre</option>)</para>
        </listitem>

        <listitem>
          <para>file move or rename (<option>fmov</option>)</para>
        </listitem>

        <listitem>
          <para>directory move or rename (<option>dmov</option>)</para>
        </listitem>

        <listitem>
          <para>login (<option>login</option>)</para>
        </listitem>

        <listitem>
          <para>logout (<option>logout</option>)</para>
        </listitem>
      </itemizedlist>

      <variablelist>
        <varlistentry>
          <term>fce listener = <replaceable>host[:port]</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Enables sending FCE events to the specified
            <parameter>host</parameter>, default <parameter>port</parameter>
            is 12250 if not specified. Specifying multiple listeners is done
            by having this option once for each of them.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce version = <replaceable>1|2</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>FCE protocol version, default is 1. You need version 2 for
            the fmov, dmov, login or logout events.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce events =
          <replaceable>fmod,fdel,ddel,fcre,dcre,fmov,dmov,login,logout</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies which FCE events are active, default is
            <parameter>fmod,fdel,ddel,fcre,dcre</parameter>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce coalesce = <replaceable>all|delete|create</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Coalesce FCE events.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce holdfmod = <replaceable>seconds</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>This determines the time delay in seconds which is always
            waited if another file modification for the same file is done by a
            client before sending an FCE file modification event (fmod). For
            example saving a file in Photoshop would generate multiple events
            by itself because the application is opening, modifying and
            closing a file multiple times for every "save". Default: 60
            seconds.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce sendwait = <replaceable>milliseconds</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Defines a delay in milliseconds between the emission of each
            FCE event. Use this if you are experiencing lost FCE events when
            creating or deleting a very large number of files at once. The
            deluge of events that such an operation triggers can lead to UDP
            buffer overflow and subsequently to packet loss. Has to be a
            number between 0 and 999. Default: 0 milliseconds.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce ignore names = <replaceable>NAME[/NAME2/...]</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Slash delimited list of filenames for which FCE events shall
            not be generated. Default: .DS_Store.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce ignore directories =
          <replaceable>NAME[,NAME2,...]</replaceable> <type>(G)</type></term>

          <listitem>
            <para>Comma delimited list of directories for which FCE events
            shall not be generated. Default: empty.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>fce notify script = <replaceable>PATH</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Script which will be executed for every FCE event, see
            contrib/shell_utils/fce_ev_script.sh from the Netatalk sources for
            an example script.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Debug Parameters</title>

      <para>These options are useful for debugging only.</para>

      <variablelist>
        <varlistentry>
          <term>tickleval = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Sets the tickle timeout interval (in seconds). Defaults to
            30.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>timeout = <replaceable>number</replaceable>
          <type>(G)</type></term>

          <listitem>
            <para>Specify the number of tickles to send before timing out a
            connection. The default is 4, therefore a connection will timeout
            after 2 minutes.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>client polling = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(G)</type></term>

          <listitem>
            <para>With this option enabled, afpd won't advertise that it is
            capable of server notifications, so that connected clients poll
            the server every 10 seconds to detect changes in opened server
            windows. <emphasis>Note</emphasis>: Depending on the number of
            simultaneously connected clients and the network's speed, this can
            lead to a significant higher load on your network!</para>

            <para>Do not use this option any longer as present Netatalk
            correctly supports server notifications, allowing connected
            clients to update folder listings in case another client changed
            the contents.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2 id="acl_options">
      <title>Options for ACL handling</title>

      <para>By default, the effective permission of the authenticated user are
      only mapped to the mentioned UARights permission structure, not the UNIX
      mode. You can adjust this behaviour with the configuration option
      <option>map acls</option>:</para>

      <variablelist id="map_acls">
        <varlistentry>
          <term>map acls = <parameter>none|rights|mode</parameter>
          <type>(G)</type></term>

          <listitem>
            <para><variablelist>
                <varlistentry>
                  <term>none</term>

                  <listitem>
                    <para>no mapping of ACLs</para>
                  </listitem>
                </varlistentry>

                <varlistentry>
                  <term>rights</term>

                  <listitem>
                    <para>effective permissions are mapped to UARights
                    structure. This is the default.</para>
                  </listitem>
                </varlistentry>

                <varlistentry>
                  <term>mode</term>

                  <listitem>
                    <para>ACLs are additionally mapped to the UNIX mode of the
                    filesystem object.</para>
                  </listitem>
                </varlistentry>
              </variablelist></para>
          </listitem>
        </varlistentry>
      </variablelist>

      <para>If you want to be able to display ACLs on the client, you must
      setup both client and server as part on a authentication domain
      (directory service, e.g. LDAP, Open Directory, Active Directory). The
      reason is, in OS X ACLs are bound to UUIDs, not just uid's or gid's.
      Therefore Netatalk must be able to map every filesystem uid and gid to a
      UUID so that it can return the server side ACLs which are bound to UNIX
      uid and gid mapped to OS X UUIDs.</para>

      <para>Netatalk can query a directory server using LDAP queries. Either
      the directory server already provides an UUID attribute for user and
      groups (Active Directory, Open Directory) or you reuse an unused
      attribute (or add a new one) to you directory server (eg
      OpenLDAP).</para>

      <para>The following LDAP options must be configured for Netatalk:</para>

      <variablelist>
        <varlistentry>
          <term>ldap auth method = <parameter>none|simple|sasl</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Authentication method: <option>none | simple |
            sasl</option></para>

            <para><variablelist>
                <varlistentry>
                  <term>none</term>

                  <listitem>
                    <para>anonymous LDAP bind</para>
                  </listitem>
                </varlistentry>

                <varlistentry>
                  <term>simple</term>

                  <listitem>
                    <para>simple LDAP bind</para>
                  </listitem>
                </varlistentry>

                <varlistentry>
                  <term>sasl</term>

                  <listitem>
                    <para>SASL. Not yet supported !</para>
                  </listitem>
                </varlistentry>
              </variablelist></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap auth dn = <parameter>dn</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Distinguished Name of the user for simple bind.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap auth pw = <parameter>password</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Password for simple bind.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap uri = <parameter>ldap://somehost:1234/</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Specifies the LDAP URI of the server to connect to. The URI
            scheme may be ldap, ldapi or ldaps, specifying LDAP over TCP, ICP
            or TLS respectively (if supported by the LDAP library). This is
            only needed for explicit ACL support in order to be able to query
            LDAP for UUIDs.</para>

            <para>You can use <citerefentry>
                <refentrytitle>afpldaptest</refentrytitle>

                <manvolnum>1</manvolnum>
              </citerefentry> to syntactically check your config.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap userbase = <parameter>base dn</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>DN of the user container in LDAP.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap userscope = <parameter>scope</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Search scope for user search: <option>base | one |
            sub</option></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap groupbase = <parameter>base dn</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>DN of the group container in LDAP.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap groupscope = <parameter>scope</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Search scope for group search: <option>base | one |
            sub</option></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap uuid attr = <parameter>dn</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Name of the LDAP attribute with the UUIDs.</para>

            <para>Note: this is used both for users and groups.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap name attr = <parameter>dn</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Name of the LDAP attribute with the users short name.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap group attr = <parameter>dn</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Name of the LDAP attribute with the groups short
            name.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap uuid string = <parameter>STRING</parameter>
          <type>(G)</type></term>

          <listitem>
            <para>Format of the uuid string in the directory. A series of x
            and -, where every x denotes a value 0-9a-f and every - is a
            separator.</para>

            <para>Default: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap uuid encoding = <parameter>string | ms-guid (default:
          string)</parameter> <type>(G)</type></term>

          <listitem>
            <para>Format of the UUID of the LDAP attribute, allows usage of
            the binary objectGUID fields from Active Directory. If left
            unspecified, string is the default, which passes through the ASCII
            UUID returned by most other LDAP stores. If set to ms-guid, the
            internal UUID representation is converted to and from the binary
            format used in the objectGUID attribute found on objects in Active
            Directory when interacting with the server.</para>

            <para>See also the options <option>ldap user filter</option> and
            <option>ldap group filter</option>.</para>

            <para><variablelist>
                <varlistentry>
                  <term>string</term>

                  <listitem>
                    <para>UUID is a string, use with e.g.
                    OpenDirectory.</para>
                  </listitem>
                </varlistentry>

                <varlistentry>
                  <term>ms-guid</term>

                  <listitem>
                    <para>Binary objectGUID from Active Directory</para>
                  </listitem>
                </varlistentry>
              </variablelist></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap user filter = <parameter>STRING (default:
          unused)</parameter> <type>(G)</type></term>

          <listitem>
            <para>Optional LDAP filter that matches user objects. This is
            necessary for Active Directory environments where users and groups
            are stored in the same directory subtree.</para>

            <para>Recommended setting for Active Directory:
            <parameter>objectClass=user</parameter>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ldap group filter = <parameter>STRING (default:
          unused)</parameter> <type>(G)</type></term>

          <listitem>
            <para>Optional LDAP filter that matches group objects. This is
            necessary for Active Directory environments where users and groups
            are stored in the same directory subtree.</para>

            <para>Recommended setting for Active Directory:
            <parameter>objectClass=group</parameter>.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>
  </refsect1>

  <refsect1>
    <title>Explanation of Volume Parameters</title>

    <refsect2>
      <title>Parameters</title>

      <para>The section name defines the volume name. No two volumes may have
      the same name. The volume name cannot contain the <keycode>':'</keycode>
      character. The volume name is mangled if it is very long. Mac charset
      volume name is limited to 27 characters. UTF8-MAC volume name is limited
      to volnamelen parameter.</para>

      <variablelist>
        <varlistentry>
          <term>path = <replaceable>PATH</replaceable> <type>(V)</type></term>

          <listitem>
            <para>The path name must be a fully qualified path name.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>appledouble = <replaceable>ea|v2</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>Specify the format of the metadata files, which are used for
            saving Mac resource fork as well. Earlier versions used
            AppleDouble v2, the new default format is <emphasis
            role="bold">ea</emphasis>.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>vol size limit = <replaceable>size in MiB</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>Useful for Time Machine: limits the reported volume size,
            thus preventing Time Machine from using the whole real disk space
            for backup. Example: "vol size limit = 1000" would limit the
            reported disk space to 1 GB. <emphasis role="bold">IMPORTANT:
            </emphasis> This is an approximated calculation taking into
            account the contents of Time Machine sparsebundle images.
            Therefore you MUST NOT use this volume to store other content when
            using this option, because it would NOT be accounted for. The
            calculation works by reading the band size from the Info.plist XML
            file of the sparsebundle, reading the bands/ directory counting
            the number of band files, and then multiplying one with the
            other.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>valid users = <replaceable>user @group</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>The allow option allows the users and groups that access a
            share to be specified. Users and groups are specified, delimited
            by spaces or commas. Groups are designated by a @ prefix. Example:
            <programlisting>valid users = user @group</programlisting></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>invalid users = <replaceable>users/groups</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>The deny option specifies users and groups who are not
            allowed access to the share. It follows the same format as the
            "valid users" option.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>hosts allow = <replaceable>IP host address/IP netmask bits [
          ... ]</replaceable> <type>(V)</type></term>

          <listitem>
            <para>Only listed hosts and networks are allowed, all others are
            rejected. The network address may be specified either in
            dotted-decimal format for IPv4 or in hexadecimal format for
            IPv6.</para>

            <para>Example: hosts allow = 10.1.0.0/16 10.2.1.100
            2001:0db8:1234::/48</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>hosts deny = <replaceable>IP host address/IP netmask bits [
          ... ]</replaceable> <type>(V)</type></term>

          <listitem>
            <para>Listed hosts and nets are rejected, all others are
            allowed.</para>

            <para>Example: hosts deny = 192.168.100/24 10.1.1.1
            2001:db8::1428:57ab</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid scheme = <replaceable>backend</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>set the CNID backend to be used for the volume, default is
            [@DEFAULT_CNID_SCHEME@] available schemes:
            [@compiled_backends@]</para>

            <note>
              <para>The "mysql" backend requires the system administrator to
              configure a MySQL database instance for use with
              netatalk.</para>
            </note>

            <warning>
              <para>Do <emphasis>NOT</emphasis> use the "last" backend for
              volumes, because <command>afpd</command> relies heavily on a
              persistent ID database. Aliases will likely not work and
              filename mangling is not supported.</para>
            </warning>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>ea = <replaceable>none|auto|sys|ad|samba</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>Specify how Extended Attributes<indexterm>
                <primary>Extended Attributes</primary>
              </indexterm> are stored. <option>auto</option> is the
            default.</para>

            <variablelist>
              <varlistentry>
                <term>auto</term>

                <listitem>
                  <para>Try <option>sys</option> (by setting an EA on the
                  shared directory itself), fallback to <option>ad</option>.
                  Requires writable volume for performing test. "<option>read
                  only = yes</option>" overwrites <option>auto</option> with
                  <option>none</option>. Use explicit "<option>ea =
                  sys|ad</option>" for read-only volumes where
                  appropriate.</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>sys</term>

                <listitem>
                  <para>Use filesystem Extended Attributes.</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>samba</term>

                <listitem>
                  <para>Use filesystem Extended Attributes, but append a 0
                  byte to each xattr in order to be compatible with Samba's
                  vfs_streams_xattr.</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>ad</term>

                <listitem>
                  <para>Use files in <emphasis>.AppleDouble</emphasis>
                  directories.</para>
                </listitem>
              </varlistentry>

              <varlistentry>
                <term>none</term>

                <listitem>
                  <para>No Extended Attributes support.</para>
                </listitem>
              </varlistentry>
            </variablelist>

            <warning>
              <para>The <emphasis role="bold">samba</emphasis> option should
              not be used on a volume that was previously set to <emphasis
              role="bold">sys</emphasis>. This may lead data loss.</para>
            </warning>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>mac charset = <replaceable>CHARSET</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>specifies the Mac client charset for this Volume, e.g.
            <emphasis>MAC_ROMAN</emphasis>, <emphasis>MAC_CYRILLIC</emphasis>.
            If not specified the global setting is applied. This setting is
            only required if you need volumes, where the Mac charset differs
            from the one globally set in the [Global] section.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>casefold = <option>option</option> <type>(V)</type></term>

          <listitem>
            <para>The casefold option handles, if the case of filenames should
            be changed. The available options are:</para>

            <para><option>tolower</option> - Lowercases names in both
            directions.</para>

            <para><option>toupper</option> - Uppercases names in both
            directions.</para>

            <para><option>xlatelower</option> - Client sees lowercase, server
            sees uppercase.</para>

            <para><option>xlateupper</option> - Client sees uppercase, server
            sees lowercase.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>password = <replaceable>password</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>This option allows you to set a volume password, which can
            be a maximum of 8 characters long (using ASCII strongly
            recommended at the time of this writing).</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>file perm = <replaceable>mode</replaceable>
          <type>(V)</type></term>

          <term>directory perm = <replaceable>mode</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>Add(or) with the client requested permissions: <option>file
            perm</option> is for files only, <option>directory perm</option>
            is for directories only. Don't use with "<option>unix priv =
            no</option>".</para>

            <example>
              <title>Volume for a collaborative workgroup</title>

              <para><programlisting>file perm = 0660 directory perm =
              0770</programlisting></para>
            </example>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>umask = <replaceable>mode</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>set perm mask. Don't use with "<option>unix priv =
            no</option>".</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>preexec = <replaceable>command</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>command to be run when the volume is mounted</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>postexec = <replaceable>command</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>command to be run when the volume is closed</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>rolist = <option>users/groups</option> <type>(V)</type></term>

          <listitem>
            <para>Allows certain users and groups to have read-only access to
            a share. This follows the allow option format.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>rwlist = <replaceable>users/groups</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>Allows certain users and groups to have read/write access to
            a share. This follows the allow option format.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>veto files = <replaceable>vetoed names</replaceable>
          <type>(V)</type></term>

          <listitem>
            <para>hide files and directories,where the path matches one of the
            '/' delimited vetoed names. The veto string must always be
            terminated with a '/', e.g. "veto files = veto1/", "veto files =
            veto1/veto2/".</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>

    <refsect2>
      <title>Volume options</title>

      <para>Boolean volume options.</para>

      <variablelist>
        <varlistentry>
          <term>acls = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether to flag volumes as supporting ACLs. If ACL support
            is compiled in, this is yes by default.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>case sensitive = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether to flag volumes as supporting case-sensitive
            filenames. If the filesystem is case-insensitive, set to no.
            However, it is not fully verified.</para>

            <note>
              <para>In spite of being case sensitive as a matter of fact,
              netatalk 3.1.3 and earlier did not notify kCaseSensitive flag to
              the client. Starting with 3.1.4, it is notified correctly by
              default.</para>
            </note>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>cnid dev = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether to use the device number in the CNID backends. Helps
            when the device number is not constant across a reboot, e.g.
            cluster, ...</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>convert appledouble = <replaceable>BOOLEAN</replaceable>
          (default: <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether automatic conversion from <option>appledouble =
            v2</option> to <option>appledouble = ea</option> is performed when
            accessing filesystems from clients. This is generally useful, but
            costs some performance. It's recommendable to run
            <command>dbd</command> on volumes and do the conversion with that.
            Then this option can be set to no.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>delete veto files = <replaceable>BOOLEAN</replaceable>
          (default: <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>This option is used when Netatalk is attempting to delete a
            directory that contains one or more vetoed files or directories
            (see the veto files option). If this option is set to no (the
            default) then if a directory contains any non-vetoed files or
            directories then the directory delete will fail. This is usually
            what you want.</para>

            <para>If this option is set to yes, then Netatalk will attempt to
            recursively delete any files and directories within the vetoed
            directory.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>follow symlinks = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>The default setting is false thus symlinks are not followed
            on the server. This is the same behaviour as OS X's AFP server.
            Setting the option to true causes afpd to follow symlinks on the
            server. symlinks may point outside of the AFP volume, currently
            afpd doesn't do any checks for "wide symlinks".</para>

            <note>
              <para>This option will subtly break when the symlinks point
              across filesystem boundaries.</para>
            </note>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>invisible dots = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>make dot files invisible. WARNING: enabling this option will
            lead to unwanted side effects where OS X applications, when saving
            files to a temporary file starting with a dot first, then renaming
            the temp file to its final name, result in the saved file being
            invisible. The only thing this option is useful for is making
            files that start with a dot invisible on Mac OS 9. It's completely
            useless on Mac OS X, as both in Finder and in Terminal files
            starting with a dot are hidden anyway.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>legacy volume size = <replaceable>BOOLEAN</replaceable>
          (default: <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Limit disk size reporting to 2GB for legacy clients. This
            can be used for older Macintoshes running System 7.1 or earlier
            and using newer AppleShare clients.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>network ids = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether the server support network ids. Setting this to
            <emphasis>no</emphasis> will result in the client not using ACL
            AFP functions.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>preexec close = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>A non-zero return code from preexec close the volume being
            immediately, preventing clients to mount/see the volume in
            question.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>prodos = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Enable ProDOS support. This option should only be enabled
            for volumes you expect to netboot an Apple II from. In addition to
            setting the boot flag on the volume, it restricts the volume free
            space shown to 32MB.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>read only = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Specifies the share as being read only for all users.
            Overwrites <option>ea = auto</option> with <option>ea =
            none</option></para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>search db = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Use fast CNID database namesearch instead of slow recursive
            filesystem search. Relies on a consistent CNID database, i.e.
            Samba or local filesystem access lead to inaccurate or wrong
            results. Works only for "dbd" CNID db volumes.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>stat vol = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether to stat volume path when enumerating volumes list,
            useful for automounting or volumes created by a preexec
            script.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>time machine = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>no</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether to enable Time Machine support for this
            volume.</para>
          </listitem>
        </varlistentry>

        <varlistentry>
          <term>unix priv = <replaceable>BOOLEAN</replaceable> (default:
          <emphasis>yes</emphasis>) <type>(V)</type></term>

          <listitem>
            <para>Whether to use AFP3 UNIX privileges. This should be set for
            OS X clients. See also: <option>file perm</option>,
            <option>directory perm</option> and <option>umask</option>.</para>
          </listitem>
        </varlistentry>
      </variablelist>
    </refsect2>
  </refsect1>

  <refsect1>
    <title>See Also</title>

    <para><citerefentry>
        <refentrytitle>afpd</refentrytitle>

        <manvolnum>8</manvolnum>
      </citerefentry>, <citerefentry>
        <refentrytitle>afppasswd</refentrytitle>

        <manvolnum>5</manvolnum>
      </citerefentry>, <citerefentry>
        <refentrytitle>afp_signature.conf</refentrytitle>

        <manvolnum>5</manvolnum>
      </citerefentry>, <citerefentry>
        <refentrytitle>extmap.conf</refentrytitle>

        <manvolnum>5</manvolnum>
      </citerefentry>, <citerefentry>
        <refentrytitle>cnid_metad</refentrytitle>

        <manvolnum>8</manvolnum>
      </citerefentry></para>
  </refsect1>

  <refsect1>
    <title>Author</title>

    <para>See <ulink
    url="https://netatalk.io/contributors">CONTRIBUTORS</ulink></para>
  </refsect1>
</refentry>
