Provided by: netatalk_3.1.13~ds-2build1_amd64 bug


       afp.conf - Netatalk configuration file


       The afp.conf file is the configuration file for the Netatalk AFP file server.

       All AFP specific configuration and AFP volume definitions are done via this file.


       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:

               name = value

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

       Section and parameter names are case sensitive.

       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.

       Any line beginning with a semicolon (“;”) or a hash (“#”) character is ignored, as are
       lines containing only whitespace.

       Any line ending in a “ \ ” is continued on the next line in the customary UNIX fashion.

       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.

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


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

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

       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 path option
       must specify the directory to share.

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

       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.

       The following sample section defines an AFP volume. The user has full access to the path
       /foo/bar. The share is accessed via the share name baz:

               path = /foo/bar


   The [Global] section
       Parameters in this section apply to the server as a whole. Parameters denoted by a (G)
       below are must be set in this section.

   The [Homes] section
       This section enable sharing of the UNIX server user home directories. Specifying an
       optional path parameter means that not the whole user home will be shared but the
       subdirectory path. It is necessary to define the basedir regex 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 home name can be used to change the AFP
       volume name which $u's home by default. See below under VARIABLE SUBSTITUTIONS.

       The following example illustrates this. Given all user home directories are stored under

                 path = afp-data
                 basedir regex = /home

       For a user john this results in an AFP home volume with a path of /home/john/afp-data.

       If basedir regex contains symlink, set the canonicalized absolute path. When /home links
       to /usr/home:

                 basedir regex = /usr/home


       Parameters define the specific attributes of sections.

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


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

        1. if you specify an unknown variable, it will not get converted.

        2. if you specify a known variable, but that variable doesn't have a value, it will get

       The variables which can be used for substitutions are:


           client's ip address

           volume pathname on server

           full name (contents of the gecos field in the passwd file)

           group name


           client's ip, without port

           server name (this can be the hostname)

           user name (if guest, it is the user that guest is running as)

           volume name

           prints dollar sign ($)


   Authentication Options
       ad domain = DOMAIN (G)
           Append @DOMAIN to username when authenticating. Useful in Active Directory
           environments that otherwise would require the user to enter the full user@domain

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

       admin group = group (G)
           Allows users of a certain group to be seen as the superuser when they log in. This
           option is disabled by default.

       force user = USER (G)
           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.

       force group = GROUP (G)
           This specifies a UNIX group name that will be assigned as the default primary group
           for all users connecting to this server.

       k5 keytab = path (G), k5 service = service (G), k5 realm = realm (G)
           These are required if the server supports the Kerberos 5 authentication UAM.

       nt domain = DOMAIN (G), nt separator = SEPARATOR (G)
           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.

       save password = BOOLEAN (default: yes) (G)
           Enables or disables the ability of clients to save passwords locally.

       set password = BOOLEAN (default: no) (G)
           Enables or disables the ability of clients to change their passwords via chooser or
           the "connect to server" dialog.

       uam list = uam list (G)
           Space or comma separated list of UAMs. (The default is "").

           The most commonly used UAMs are:

               allows guest logins

               ( or Allow logins with passwords transmitted in the
               clear. (legacy)

               allows Random Number and Two-Way Random Number Exchange for authentication
               (requires a separate file containing the passwords, either @pkgconfdir@/afppasswd
               file or the one specified via "passwd file"). See afppasswd(1) for details.

               ( or Allow Diffie-Hellman eXchange (DHX) for

               ( or Allow Diffie-Hellman eXchange 2 (DHX2)
               for authentication.

               Allow Kerberos V for authentication (optional)

       uam path = path (G)
           Sets the default path for UAMs for this server (default is ${prefix}/lib/x86_64-linux-

   Charset Options
       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.

       To be able to serve AFP3 and older clients at the same time, afpd 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, afpd can detect the codepage a pre AFP3 client uses, you have
       to specify it using the mac charset option. The default is MacRoman, which should be fine
       for most western users.

       As afpd 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 afpd uses UTF8. You
       can set the UNIX charset using the unix charset option. If you're using extended
       characters in the configuration files for afpd, make sure your terminal matches the unix

       mac charset = CHARSET (G)/(V)
           Specifies the Mac clients charset, e.g.  MAC_ROMAN. 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 mac
           charset. Defaults to MAC_ROMAN.

       unix charset = CHARSET (G)
           Specifies the servers unix charset, e.g.  ISO-8859-15 or EUC-JP. This is used to
           convert strings to/from the systems locale, e.g. for authentication, server messages
           and volume names. If LOCALE is set, the systems locale is used. Defaults to UTF8.

       vol charset = CHARSET (G)/(V)
           Specifies the encoding of the volumes filesystem. By default, it is the same as unix

   Password Options
       passwd file = path (G)
           Sets the path to the Randnum UAM passwd file for this server (default is

       passwd minlen = number (G)
           Sets the minimum password length, if supported by the UAM

   Network Options
       advertise ssh = BOOLEAN (default: no) (G)
           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 sshd(8) on the server to let things

               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.

       afp interfaces = name [name ...] (G)
           Specifies the network interfaces that the server should listens on. The default is
           advertise the first IP address of the system, but to listen for any incoming request.

       afp listen = ip address[:port] [ip address[:port] ...] (G)
           Specifies the IP address that the server should advertise and 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.

           IPv6 address + port combination must use URL the format using square brackets

       afp port = port number (G)
           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 afp listen option.

       cnid listen = ip address[:port] [ip address[:port] ...] (G)
           Specifies the IP address that the CNID server should listen on. The default is

       disconnect time = number (G)
           Keep disconnected AFP sessions for number hours before dropping them. Default is 24

       dsireadbuf = number (G)
           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.  Note: This buffer is allocated per afpd child process, so
           specifying large values will eat up large amount of memory (buffer size * number of

       fqdn = name[:port] (G)
           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 <=
           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.

       hostname = name (G)
           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 afp listen.

       max connections = number (G)
           Sets the maximum number of clients that can simultaneously connect to the server
           (default is 200).

       server quantum = number (G)
           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

       sleep time = number (G)
           Keep sleeping AFP sessions for number hours before disconnecting clients in sleep
           mode. Default is 10 hours.

       tcprcvbuf = number (G)
           Try to set TCP receive buffer using setsockopt(). Often OSes impose restrictions on
           the applications ability to set this value.

       tcpsndbuf = number (G)
           Try to set TCP send buffer using setsockopt(). Often OSes impose restrictions on the
           applications ability to set this value.

       recvfile = BOOLEAN (default: no) (G)
           Whether to use splice() on Linux for receiving data.

       splice size = number (default: 64k) (G)
           Maximum number of bytes spliced.

       use sendfile = BOOLEAN (default: yes) (G)
           Whether to use sendfile.  syscall for sending file data to clients.

       zeroconf = BOOLEAN (default: yes) (G)
           Whether to use automatic Zeroconf.  service registration if Avahi or mDNSResponder
           were compiled in.

   Miscellaneous Options
       afp read locks = BOOLEAN (default: no) (G)
           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.

       afpstats = BOOLEAN (default: no) (G)
           Whether to provide AFP runtime statistics (connected users, open volumes) via dbus.

       basedir regex = regex (H)
           Regular expression which matches the parent directory of the user homes. If basedir
           regex contains symlink, you must set the canonicalized absolute path. In the simple
           case this is just a path i.e.  basedir regex = /home

       chmod request = preserve (default) | ignore | simple (G)/(V)
           Advanced permission control that deals with ACLs.

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

           •    preserve - preserve ZFS ACEs for named users and groups or POSIX ACL group mask

           •    simple - just to a chmod() as requested without any extra steps

       close vol = BOOLEAN (default: no) (G)
           Whether to close volumes possibly opened by clients when they're removed from the
           configuration and the configuration is reloaded.

       cnid mysql host = MySQL server address (G)
           name or address of a MySQL server for use with the mysql CNID backend.

       cnid mysql user = MySQL user (G)
           MySQL user for authentication with the server.

       cnid mysql pw = password (G)
           Password for MySQL server.

       cnid mysql db = database name (G)
           Name of an existing database for which the specified user has full privileges.

       cnid server = ipaddress[:port] (G)/(V)
           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.-
       dbus daemon = path (G)
           Sets the path to dbus-daemon binary used by Spotlight feature. The default value
           [/usr/bin/dbus-daemon] is determined when building netatalk.

       dircachesize = number (G)
           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.

           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.

       extmap file = path (G)
           Sets the path to the file which defines file extension type/creator mappings. (default
           is @pkgconfdir@/extmap.conf).

       force xattr with sticky bit = BOOLEAN (default: no) (G/V)
           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.

           By enabling this option Netatalk will write the metadata xattr as root.

       guest account = name (G)
           Specifies the user that guests should use (default is "nobody"). The name should be

       home name = name (H)
           AFP user home volume name. The default is $u's home.

       ignored attributes = all | nowrite | nodelete | norename (G)/(V)
           Speficy a set of file and directory attributes that shall be ignored by the server,
           all includes all the other options.

           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 ignored attributes = all.

       login message = message (G)/(V)
           Sets a message to be displayed when clients logon to the server. The message should be
           in unix charset and should be quoted. Extended characters are allowed.

       mimic model = model (G)
           Specifies the icon model that appears on clients. Defaults to off. Note that netatalk
           must support Zeroconf. Examples: RackMac (same as Xserve), PowerBook, PowerMac,
           Macmini, iMac, MacBook, MacBookPro, MacBookAir, MacPro, AppleTV1,1, AirPort.

       signature = <text> (G)
           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 generate
           signature and saving it to /var/lib/netatalk/afp_signature.conf automatically (based
           on random number). See also

       solaris share reservations = BOOLEAN (default: yes) (G)
           Use share reservations on Solaris. Solaris CIFS server uses this too, so this makes a
           lock coherent multi protocol server.

       sparql results limit = NUMBER (default: UNLIMITED) (G)
           Impose a limit on the number of results queried from Tracker via SPARQL queries.

       spotlight = BOOLEAN (default: no) (G)/(V)
           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 dbus daemon option.

       spotlight attributes = COMMA SEPARATED STRING (default: EMPTY) (G)
           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:

               spotlight attributes = *,kMDItemTextContent

       spotlight expr = BOOLEAN (default: yes) (G)
           Whether to allow the use of logic expression in searches.

       start dbus = BOOLEAN (default: yes) (G)
           Whether to start a dbus instance for use with Tracker.

       start tracker = BOOLEAN (default: yes) (G)
           Whether to start Tracker with "tracker daemon -s". In case of old Tracker,
           "tracker-control -s" is used instead.

       veto message = BOOLEAN (default: no) (G)
           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.

       vol dbpath = path (G)/(V)
           Sets the database information to be stored in path. You have to specify a writable
           location, even if the volume is read only. The default is /var/lib/netatalk/CNID/$v/.

       vol dbnest = BOOLEAN (default: no) (G)
           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.

       volnamelen = number (G)
           Max length of UTF8-MAC volume name for Mac OS X. Note that Hangul is especially
           sensitive to this.

               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

           Mac OS 9 and earlier are not influenced by this, because Maccharset volume name is
           always limited to 27 bytes.

       vol preset = name (G)/(V)
           Use section name as option preset for all volumes (when set in the [Global] section)
           or for one volume (when set in that volume's section).

       zeroconf name = name (G)
           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.

   Logging Options
       log file = logfile (G)
           If not specified Netatalk logs to syslogs daemon facility. Otherwise it logs to

       log level = type:level [type:level ...] (G), log level = type:level,[type:level, ...] (G)
           Specify that any message of a loglevel up to the given log level should be logged.

           By default afpd logs to syslog with a default logging setup equivalent to default:note

           logtypes: default, afpdaemon, logger, uamsdaemon

           loglevels: severe, error, warn, note, info, debug, debug6, debug7, debug8, debug9,

               Both logtype and loglevels are case insensitive.

   Filesystem Change Events (FCE.
       Netatalk includes a nifty filesystem change event mechanism where afpd processes notify
       interested listeners about certain filesystem event by UDP network datagrams.

       The following FCE events are defined:

       •   file modification (fmod)

       •   file deletion (fdel)

       •   directory deletion (ddel)

       •   file creation (fcre)

       •   directory creation (dcre)

       •   file move or rename (fmov)

       •   directory move or rename (dmov)

       •   login (login)

       •   logout (logout)

       fce listener = host[:port] (G)
           Enables sending FCE events to the specified host, default port is 12250 if not
           specified. Specifying multiple listeners is done by having this option once for each
           of them.

       fce version = 1|2 (G)
           FCE protocol version, default is 1. You need version 2 for the fmov, dmov, login or
           logout events.

       fce events = fmod,fdel,ddel,fcre,dcre,fmov,dmov,login,logout (G)
           Specifies which FCE events are active, default is fmod,fdel,ddel,fcre,dcre.

       fce coalesce = all|delete|create (G)
           Coalesce FCE events.

       fce holdfmod = seconds (G)
           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.

       fce ignore names = NAME[/NAME2/...] (G)
           Slash delimited list of filenames for which FCE events shall not be generated.
           Default: .DS_Store.

       fce notify script = PATH (G)
           Script which will be executed for every FCE event, see
           contrib/shell_utils/ from the Netatalk sources for an example script.

   Debug Parameters
       These options are useful for debugging only.

       tickleval = number (G)
           Sets the tickle timeout interval (in seconds). Defaults to 30.

       timeout = number (G)
           Specify the number of tickles to send before timing out a connection. The default is
           4, therefore a connection will timeout after 2 minutes.

       client polling = BOOLEAN (default: no) (G)
           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.  Note: Depending on the number of simultaneously
           connected clients and the network's speed, this can lead to a significant higher load
           on your network!

           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.

   Options for ACL handling
       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 map acls:

       map acls = none|rights|mode (G)

               no mapping of ACLs

               effective permissions are mapped to UARights structure. This is the default.

               ACLs are additionally mapped to the UNIX mode of the filesystem object.

       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. Therefor 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

       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).

       The following LDAP options must be configured for Netatalk:

       ldap auth method = none|simple|sasl (G)
           Authentication method: none | simple | sasl

               anonymous LDAP bind

               simple LDAP bind

               SASL. Not yet supported !

       ldap auth dn = dn (G)
           Distinguished Name of the user for simple bind.

       ldap auth pw = password (G)
           Password for simple bind.

       ldap server = host (G)
           Name or IP address of your LDAP Server. This is only needed for explicit ACL support
           in order to be able to query LDAP for UUIDs.

           You can use afpldaptest(1) to syntactically check your config.

       ldap userbase = base dn (G)
           DN of the user container in LDAP.

       ldap userscope = scope (G)
           Search scope for user search: base | one | sub

       ldap groupbase = base dn (G)
           DN of the group container in LDAP.

       ldap groupscope = scope (G)
           Search scope for group search: base | one | sub

       ldap uuid attr = dn (G)
           Name of the LDAP attribute with the UUIDs.

           Note: this is used both for users and groups.

       ldap name attr = dn (G)
           Name of the LDAP attribute with the users short name.

       ldap group attr = dn (G)
           Name of the LDAP attribute with the groups short name.

       ldap uuid string = STRING (G)
           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.

           Default: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

       ldap uuid encoding = string | ms-guid (default: string) (G)
           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

           See also the options ldap user filter and ldap group filter.

               UUID is a string, use with e.g. OpenDirectory.

               Binary objectGUID from Active Directory

       ldap user filter = STRING (default: unused) (G)
           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.

           Recommended setting for Active Directory: objectClass=user.

       ldap group filter = STRING (default: unused) (G)
           Optional LDAP filter that matches group objects. This is necessary for Active
           Directory environments where users and groups are stored in the same directory

           Recommended setting for Active Directory: objectClass=group.


       The section name defines the volume name. No two volumes may have the same name. The
       volume name cannot contain the ':' 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.

       path = PATH (V)
           The path name must be a fully qualified path name.

       appledouble = ea|v2 (V)
           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 ea.

       vol size limit = size in MiB (V)
           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.  IMPORTANT: This is an approximated
           calculation taking into account the contents of Time Machine sparsebundle images.
           Therefor you MUST NOT use this volume to store other content when using this option,
           because it would NOT be accounted. 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.

       valid users = user @group (V)
           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. Names may be quoted in order to allow for spaces in names. Example:

               valid users = user "user 2" @group “@group 2"

       invalid users = users/groups (V)
           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.

       hosts allow = IP host address/IP netmask bits [ ... ] (V)
           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.

           Example: hosts allow = 2001:0db8:1234::/48

       hosts deny = IP host address/IP netmask bits [ ... ] (V)
           Listed hosts and nets are rejected, all others are allowed.

           Example: hosts deny = 192.168.100/24 2001:db8::1428:57ab

       cnid scheme = backend (V)
           set the CNID backend to be used for the volume, default is [dbd] available schemes: [
           dbd last tdb mysql]

       ea = none|auto|sys|ad|samba (V)
           Specify how Extended Attributes.  are stored.  auto is the default.

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

               Use filesystem Extended Attributes.

               Use filesystem Extended Attributes, but append a 0 byte to each xattr in order to
               be compatible with Samba's vfs_streams_xattr.

               Use files in .AppleDouble directories.

               No Extended Attributes support.

       mac charset = CHARSET (V)
           specifies the Mac client charset for this Volume, e.g.  MAC_ROMAN, MAC_CYRILLIC. 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]

       casefold = option (V)
           The casefold option handles, if the case of filenames should be changed. The available
           options are:

           tolower - Lowercases names in both directions.

           toupper - Uppercases names in both directions.

           xlatelower - Client sees lowercase, server sees uppercase.

           xlateupper - Client sees uppercase, server sees lowercase.

       password = password (V)
           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).

       file perm = mode (V), directory perm = mode (V)
           Add(or) with the client requested permissions: file perm is for files only, directory
           perm is for directories only. Don't use with "unix priv = no".

           Example. Volume for a collaborative workgroup

               file perm = 0660 directory perm =

       umask = mode (V)
           set perm mask. Don't use with "unix priv = no".

       preexec = command (V)
           command to be run when the volume is mounted

       postexec = command (V)
           command to be run when the volume is closed

       root preexec = command (V)
           command to be run as root when the volume is mounted

       root postexec = command (V)
           command to be run as root when the volume is closed

       rolist = users/groups (V)
           Allows certain users and groups to have read-only access to a share. This follows the
           allow option format.

       rwlist = users/groups (V)
           Allows certain users and groups to have read/write access to a share. This follows the
           allow option format.

       veto files = vetoed names (V)
           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/".

   Volume options
       Boolean volume options.

       acls = BOOLEAN (default: yes) (V)
           Whether to flag volumes as supporting ACLs. If ACL support is compiled in, this is yes
           by default.

       case sensitive = BOOLEAN (default: yes) (V)
           Whether to flag volumes as supporting case-sensitive filenames. If the filesystem is
           case-insensitive, set to no. However, it is not fully verified.

               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.

       cnid dev = BOOLEAN (default: yes) (V)
           Whether to use the device number in the CNID backends. Helps when the device number is
           not constant across a reboot, e.g. cluster, ...

       convert appledouble = BOOLEAN (default: yes) (V)
           Whether automatic conversion from appledouble = v2 to appledouble = ea is performed
           when accessing filesystems from clients. This is generally useful, but costs some
           performance. It's recommendable to run dbd on volumes and do the conversion with that.
           Then this option can be set to no.

       delete veto files = BOOLEAN (default: no) (V)
           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.

           If this option is set to yes, then Netatalk will attempt to recursively delete any
           files and directories within the vetoed directory.

       follow symlinks = BOOLEAN (default: no) (V)
           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".

               This option will subtly break when the symlinks point across filesystem

       invisible dots = BOOLEAN (default: no) (V)
           make dot files invisible. WARNING: enabling this option will lead to unwanted
           sideeffects were 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.

       network ids = BOOLEAN (default: yes) (V)
           Whether the server support network ids. Setting this to no will result in the client
           not using ACL AFP functions.

       preexec close = BOOLEAN (default: no) (V)
           A non-zero return code from preexec close the volume being immediately, preventing
           clients to mount/see the volume in question.

       read only = BOOLEAN (default: no) (V)
           Specifies the share as being read only for all users. Overwrites ea = auto with ea =

       root preexec close= BOOLEAN (default: no) (V)
           A non-zero return code from root_preexec closes the volume immediately, preventing
           clients to mount/see the volume in question.

       search db = BOOLEAN (default: no) (V)
           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.

       stat vol = BOOLEAN (default: yes) (V)
           Whether to stat volume path when enumerating volumes list, useful for automounting or
           volumes created by a preexec script.

       time machine = BOOLEAN (default: no) (V)
           Whether to enable Time Machine support for this volume.

       unix priv = BOOLEAN (default: yes) (V)
           Whether to use AFP3 UNIX privileges. This should be set for OS X clients. See also:
           file perm, directory perm and umask.


       The AFP protocol mostly refers to files and directories by ID and not by name. Netatalk
       needs a way to store these ID's in a persistent way, to achieve this several different
       CNID backends are available. The CNID Databases are by default located in the
       /var/lib/netatalk/CNID/(volumename)/.AppleDB/ directory.

           "Concurrent database", backend is based on Oracle Berkley DB. With this backend
           several afpd daemons access the CNID database directly. Berkeley DB locking is used to
           synchronize access, if more than one afpd process is active for a volume. The drawback
           is, that the crash of a single afpd process might corrupt the database.

           Access to the CNID database is restricted to the cnid_metad daemon process.  afpd
           processes communicate with the daemon for database reads and updates. If built with
           Berkeley DB transactions the probability for database corruption is practically zero,
           but performance can be slower than with cdb

           This backend is an exception, in terms of ID persistency. ID's are only valid for the
           current session. This is basically what afpd did in the 1.5 (and 1.6) versions. This
           backend is still available, as it is useful for e.g. sharing cdroms. Starting with
           Netatalk 3.0, it becomes the read only mode automatically.

           Warning: It is NOT recommended to use this backend for volumes anymore, as afpd now
           relies heavily on a persistent ID database. Aliases will likely not work and filename
           mangling is not supported.

       Even though ./configure --help might show that there are other CNID backends available, be
       warned those are likely broken or mainly used for testing. Don't use them unless you know
       what you're doing, they may be removed without further notice from future versions.


       With OS X Apple introduced the AFP3 protocol. One of the most important changes was that
       AFP3 uses unicode names encoded as UTF-8 decomposed. Previous AFP/OS versions used
       codepages, like MacRoman, MacCentralEurope, etc.

       afpd needs a way to preserve extended Macintosh characters, or characters illegal in unix
       filenames, when saving files on a unix filesystem. This version now uses UTF-8 as the
       default encoding for names. '/' will be converted to ':'.

       Earlier versions used the the so called CAP encoding. An extended character (>0x7F) would
       be converted to a :xx sequence, e.g. the Apple Logo (MacRoman: 0xF0) was saved as :f0.
       Some special characters would be converted as to :xx notation as well. '/' would be
       encoded to :2f, a leading dot '.' might be encoded as :2e.

       The vol charset option will allow you to select another volume encoding.  afpd will accept
       any iconv(1) provided charset. It is highly recommended to stick to the default UTF-8.


       afpd(8), afppasswd(5), afp_signature.conf(5), extmap.conf(5), cnid_metad(8)