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'\" t
.\"     Title: afp.conf
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\"      Date: 19 Mar 2012
.\"    Manual: Netatalk 3.0
.\"    Source: Netatalk 3.0
.\"  Language: English
.\"
.TH "AFP\&.CONF" "5" "19 Mar 2012" "Netatalk 3.0" "Netatalk 3.0"
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
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.ad l
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.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
afp.conf \- Netatalk configuration file
.SH "SYNOPSIS"
.PP
The
afp\&.conf
file is the configuration file for the
\fBNetatalk\fR
AFP file server\&.
.PP
All AFP specific configuration and AFP volume definitions are done via this file\&.
.SH "FILE FORMAT"
.PP
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:
.sp
.if n \{\
.RS 4
.\}
.nf
        \fIname\fR = \fIvalue \fR
      
.fi
.if n \{\
.RE
.\}
.PP
The file is line\-based \- that is, each newline\-terminated line represents either a comment, a section name or a parameter\&.
.PP
Section and parameter names are case sensitive\&.
.PP
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\&.
.PP
Any line beginning with a semicolon (\(lq;\(rq) or a hash (\(lq#\(rq) character is ignored, as are lines containing only whitespace\&.
.PP
Any line ending in a
\(lq\e\(rq
is continued on the next line in the customary UNIX fashion\&.
.PP
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 create masks are numeric\&.
.PP
The parameter
\fBinclude = \fR\fB\fIpath\fR\fR
allows you to include one config file inside another\&. The file is included literally, as though typed in place\&. Nested includes are not supported\&.
.SH "SECTION DESCRIPTIONS"
.PP
Each section in the configuration file (except for the [Global] section) describes a shared resource (known as a
\(lqvolume\(rq)\&. The section name is the name of the volume and the parameters within the section define the volume attributes and options\&.
.PP
There are two special sections, [Global] and [Homes], which are described under
\fIspecial sections\fR\&. The following notes apply to ordinary section descriptions\&.
.PP
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
\fBpath\fR
option must specify the directory to share\&.
.PP
Any volume section without
\fBpath\fR
option is considered a
\fIvol preset\fR
which can be selected in other volume sections via the
\fBvol preset\fR
option and constitutes defaults for the volume\&. For any option speficied both in a preset
\fIand\fR
in a volume section the volume section setting completly substitutes the preset option\&.
.PP
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\&.
.PP
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:
.sp
.if n \{\
.RS 4
.\}
.nf
        [baz]
        path = /foo/bar
      
.fi
.if n \{\
.RE
.\}
.sp
.SH "SPECIAL SECTIONS"
.SS "The [Global] section"
.PP
Parameters in this section apply to the server as a whole\&. Parameters denoted by a (G) below are must be set in this section\&.
.SS "The [Homes] section"
.PP
This section enable sharing of the UNIX server user home directories\&. Specifying an optional
\fBpath\fR
parameter means that not the whole user home will be shared but the subdirectory
\fBpath\fR\&. It is neccessary to define the
\fBbasedir regex\fR
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
\fBhome name\fR
can be used to change the AFP volume name which
\fI$u\'s home\fR
by default\&. See below under VARIABLE SUBSTITUTIONS\&.
.PP
The following example illustrates this\&. Given all user home directories are stored under
/home:
.sp
.if n \{\
.RS 4
.\}
.nf
        [Homes]
        path = afp\-data
        basedir regex = /home
      
.fi
.if n \{\
.RE
.\}
.sp
For a user
\fIjohn\fR
this results in an AFP home volume with a path of
/home/john/afp\-data\&.
.SH "PARAMETERS"
.PP
Parameters define the specific attributes of sections\&.
.PP
Some parameters are specific to the [Global] section (e\&.g\&.,
\fIlogtype\fR)\&. All others are permissible only in volume sections\&. The letter
\fIG\fR
in parentheses indicates that a parameter is specific to the [Global] section\&. The letter
\fIV\fR
indicates that a parameter can be specified in a volume specific section\&.
.SH "VARIABLE SUBSTITUTIONS"
.PP
You can use variables in both volume path and volume name\&.
.sp
.RS 4
.ie n \{\
\h'-04' 1.\h'+01'\c
.\}
.el \{\
.sp -1
.IP "  1." 4.2
.\}
if you specify an unknown variable, it will not get converted\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04' 2.\h'+01'\c
.\}
.el \{\
.sp -1
.IP "  2." 4.2
.\}
if you specify a known variable, but that variable doesn\'t have a value, it will get ignored\&.
.RE
.PP
The variables which can be used for substitutions are:
.PP
$b
.RS 4
basename
.RE
.PP
$c
.RS 4
client\'s ip address
.RE
.PP
$d
.RS 4
volume pathname on server
.RE
.PP
$f
.RS 4
full name (contents of the gecos field in the passwd file)
.RE
.PP
$g
.RS 4
group name
.RE
.PP
$h
.RS 4
hostname
.RE
.PP
$i
.RS 4
client\'s ip, without port
.RE
.PP
$s
.RS 4
server name (this can be the hostname)
.RE
.PP
$u
.RS 4
user name (if guest, it is the user that guest is running as)
.RE
.PP
$v
.RS 4
volume name
.RE
.PP
$$
.RS 4
prints dollar sign ($)
.RE
.PP
\fBExample.\ \&Using variable substitution when defining volumes\fR
.PP
.if n \{\
.RS 4
.\}
.nf
          [Groupdir for $g]
          /home/groups/$g

          [$f is the best one]
          ~
        
.fi
.if n \{\
.RE
.\}
.sp
We define "groupdirs" for each primary group and use a personalized server name for homedir shares\&.
.SH "EXPLANATION OF GLOBAL PARAMETERS"
.SS "Authentication Methods"
.PP
uam list = \fIuam list\fR \fB(G)\fR
.RS 4
Space or comma separated list of UAMs\&. (The default is "uams_dhx\&.so uams_dhx2\&.so")\&.
.sp
The most commonly used UAMs are:
.PP
uams_guest\&.so
.RS 4
allows guest logins
.RE
.PP
uams_clrtxt\&.so
.RS 4
(uams_pam\&.so or uams_passwd\&.so) Allow logins with passwords transmitted in the clear\&. (legacy)
.RE
.PP
uams_randum\&.so
.RS 4
allows Random Number and Two\-Way Random Number Exchange for authentication (requires a separate file containing the passwords, either :ETCDIR:/afppasswd file or the one specified via
\fB\-passwdfile\fR\&. See
\fBafppasswd\fR(1)
for details\&. (legacy)
.RE
.PP
uams_dhx\&.so
.RS 4
(uams_dhx_pam\&.so or uams_dhx_passwd\&.so) Allow Diffie\-Hellman eXchange (DHX) for authentication\&.
.RE
.PP
uams_dhx2\&.so
.RS 4
(uams_dhx2_pam\&.so or uams_dhx2_passwd\&.so) Allow Diffie\-Hellman eXchange 2 (DHX2) for authentication\&.
.RE
.PP
uam_gss\&.so
.RS 4
Allow Kerberos V for authentication (optional)
.RE
.RE
.PP
uam path = \fIpath\fR \fB(G)\fR
.RS 4
Sets the default path for UAMs for this server (default is :ETCDIR:/uams)\&.
.RE
.PP
k5 keytab = \fIpath\fR \fB(G)\fR, k5 service = \fIservice\fR \fB(G)\fR, k5 realm = \fIrealm\fR \fB(G)\fR
.RS 4
These are required if the server supports the Kerberos 5 authentication UAM\&.
.RE
.PP
nt domain = \fIDOMAIN\fR \fB(G)\fR, nt separator = \fISEPERATOR\fR \fB(G)\fR
.RS 4
Use for eg\&. winbind authentication, prepends both strings before the username from login and then tries to authenticate with the result through the availabel and active UAM authentication modules\&.
.RE
.PP
admin auth user = \fIuser\fR \fB(G)\fR
.RS 4
Specifying eg "\fBadmin auth user = root\fR" whenever a normal user login fails, afpd will try to authenticate as the specified
\fBadmin auth user\fR\&. If this succeeds, a normal session is created for the original connecting user\&. Said differently: if you know the password of
\fBadmin auth user\fR, you can authenticate as any other user\&.
.RE
.PP
ldap server = \fIhost\fR \fB(G)\fR
.RS 4
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\&.
.sp
You can use
\fBafpldaptest\fR(1)
to syntactically check your config\&.
.RE
.PP
ldap auth method = \fInone|simple|sasl\fR \fB(G)\fR
.RS 4
Authentication method:
\fBnone | simple | sasl\fR
.PP
none
.RS 4
anonymous LDAP bind
.RE
.PP
simple
.RS 4
simple LDAP bind
.RE
.PP
sasl
.RS 4
SASL\&. Not yet supported !
.RE
.RE
.PP
ldap auth dn = \fIdn\fR \fB(G)\fR
.RS 4
Distinguished Name of the user for simple bind\&.
.sp
.RE
.PP
ldap auth pw = \fIpassword\fR \fB(G)\fR
.RS 4
Distinguished Name of the user for simple bind\&.
.sp
.RE
.PP
ldap userbase = \fIbase dn\fR \fB(G)\fR
.RS 4
DN of the user container in LDAP\&.
.sp
.RE
.PP
ldap userscope = \fIscope\fR \fB(G)\fR
.RS 4
Search scope for user search:
\fBbase | one | sub\fR
.sp
.RE
.PP
ldap groupbase = \fIbase dn\fR \fB(G)\fR
.RS 4
DN of the group container in LDAP\&.
.sp
.RE
.PP
ldap groupscope = \fIscope\fR \fB(G)\fR
.RS 4
Search scope for user search:
\fBbase | one | sub\fR
.sp
.RE
.PP
ldap uuuid attr = \fIdn\fR \fB(G)\fR
.RS 4
Name of the LDAP attribute with the UUIDs\&.
.sp
Note: this is used both for users and groups\&.
.sp
.RE
.PP
ldap name attr = \fIdn\fR \fB(G)\fR
.RS 4
Name of the LDAP attribute with the users short name\&.
.sp
.RE
.PP
ldap group attr = \fIdn\fR \fB(G)\fR
.RS 4
Name of the LDAP attribute with the groups short name\&.
.sp
.RE
.SS "Charset Options"
.PP
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\&.
.PP
To be able to serve AFP3 and older clients at the same time,
\fBafpd\fR
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,
\fBafpd\fR
can detect the codepage a pre AFP3 client uses, you have to specify it using the
\fBmac charset\fR
option\&. The default is MacRoman, which should be fine for most western users\&.
.PP
As
\fBafpd\fR
needs to interact with UNIX operating system as well, it need\'s to be able to convert from UTF8\-MAC / Mac charset to the UNIX charset\&. By default
\fBafpd\fR
uses
\fIUTF8\fR\&. You can set the UNIX charset using the
\fBunix charset\fR
option\&. If you\'re using extended characters in the configuration files for
\fBafpd\fR, make sure your terminal matches the
\fBunix charset\fR\&.
.PP
unix charset = \fICHARSET\fR \fB(G)\fR
.RS 4
Specifies the servers unix charset, e\&.g\&.
\fIISO\-8859\-15\fR
or
\fIUTF8\fR\&. This is used to convert strings to/from the systems locale, e\&.g\&. for authenthication, server messages and volume names\&. Defaults to the systems locale setting\&.
.RE
.PP
mac charset = \fICHARSET\fR \fB(G)/(V)\fR
.RS 4
Specifies the Mac clients charset, e\&.g\&.
\fIMAC_ROMAN\fR\&. 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
\fBmac charset\fR\&. Defaults to
\fIMAC_ROMAN\fR\&.
.RE
.PP
vol charset = \fICHARSET\fR \fB(G)/(V)\fR
.RS 4
Specifies the encoding of the volumes filesystem, defaults to
\fIUTF8\fR\&.
.RE
.SS "Password Options"
.PP
passwd file = \fIpath\fR \fB(G)\fR
.RS 4
Sets the path to the Randnum UAM passwd file for this server (default is :ETCDIR:/afppasswd)\&.
.RE
.PP
passwd minlen = \fInumber\fR \fB(G)\fR
.RS 4
Sets the minimum password length, if supported by the UAM
.RE
.SS "Network Options"
.PP
fqdn = \fIname:port\fR \fB(G)\fR
.RS 4
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\&.
.RE
.PP
hostname = \fIname\fR \fB(G)\fR
.RS 4
Use this instead of the result from calling hostname for dertermening which IP address to advertise, therfore the hostname is resolved to an IP which is the advertised\&. This is NOT used for listening and it is also overwritten by
\fBafp listen\fR\&.
.RE
.PP
afp listen = \fIip address[:port] [ip adress[:port] \&.\&.\&.]\fR \fB(G)\fR
.RS 4
Specifies the IP address that the server should advertise
\fBand\fR
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\&.
.RE
.PP
cnid listen = \fIip address[:port] [ip adress[:port] \&.\&.\&.]\fR \fB(G)\fR
.RS 4
Specifies the IP address that the CNID server should listen on\&. The default is
\fBlocalhost:4700\fR\&.
.RE
.PP
afp port = \fIport number\fR \fB(G)\fR
.RS 4
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
\fBafp listen\fR
option\&.
.RE
.PP
sleep time = \fInumber\fR \fB(G)\fR
.RS 4
Keep sleeping AFP sessions for
\fInumber\fR
hours before disconnecting clients in sleep mode\&. Default is 10 hours\&.
.RE
.PP
disconnect time = \fInumber\fR \fB(G)\fR
.RS 4
Keep disconnected AFP sessions for
\fInumber\fR
hours before dropping them\&. Default is 24 hours\&.
.RE
.PP
server quantum = \fInumber\fR \fB(G)\fR
.RS 4
This specifies the DSI server quantum\&. The default value is 303840\&. 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
.RE
.PP
dsireadbuf = \fInumber\fR \fB(G)\fR
.RS 4
Scale factor that determines the size of the DSI/TCP readahead buffer, default is 12\&. This is multiplies with the DSI server quantum (default ~300k) to give the size of the buffer\&. Increasing this value might increase throughput in fast local networks for volume to volume copies\&.
\fINote\fR: This buffer is allocated per afpd child process, so specifying large values will eat up large amount of memory (buffer size * number of clients)\&.
.RE
.PP
tcprcvbuf = \fInumber\fR \fB(G)\fR
.RS 4
Try to set TCP receive buffer using setsockpt()\&. Often OSes impose restrictions on the applications ability to set this value\&.
.RE
.PP
tcpsndbuf = \fInumber\fR \fB(G)\fR
.RS 4
Try to set TCP send buffer using setsockpt()\&. Often OSes impose restrictions on the applications ability to set this value\&.
.RE
.SS "Miscellaneous Options"
.PP
vol dbpath = \fIpath\fR \fB(G)\fR
.RS 4
Sets the database information to be stored in path\&. You have to specifiy a writable location, even if the volume is read only\&. The default is
$localstatedir/netatalk/CNID/, where $localstatedir defaults to
/var\&.
.RE
.PP
basedir regex = \fIregex\fR \fB(H)\fR
.RS 4
Regular expression which matches the parent directory of the user homes\&. In the simple case this is just a path ie
\fBbasedir regex = /home\fR
.RE
.PP
home name = \fIname\fR \fB(H)\fR
.RS 4
AFP user home volume name\&. The default is
\fIusers\'s home\fR\&.
.RE
.PP
vol preset = \fIname\fR \fB(G)/(V)\fR
.RS 4
Use section
\fBname\fR
as option preset for all volumes (when set in the global section) or for one volume (when set in that volume\'s section)\&.
.RE
.PP
admin group = \fIgroup\fR \fB(G)\fR
.RS 4
Allows users of a certain group to be seen as the superuser when they log in\&. This option is disabled by default\&.
.RE
.PP
cnid server = \fIipaddress[:port]\fR \fB(G)/(V)\fR
.RS 4
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\&.\-
.RE
.PP
dircachesize = \fInumber\fR \fB(G)\fR
.RS 4
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\&.
.sp
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\&.
.RE
.PP
fce listener = \fIhost[:port]\fR \fB(G)\fR
.RS 4
Enables sending FCE events to the specified
\fIhost\fR, default
\fIport\fR
is 12250 if not specified\&. Specifying mutliple listeners is done by having this option once for each of them\&.
.RE
.PP
fce events = \fIfmod,fdel,ddel,fcre,dcre,tmsz\fR \fB(G)\fR
.RS 4
Speficies which FCE events are active, default is
\fIfmod,fdel,ddel,fcre,dcre\fR\&.
.RE
.PP
fce coalesce = \fIall|delete|create\fR \fB(G)\fR
.RS 4
Coalesce FCE events\&.
.RE
.PP
fce holdfmod = \fIseconds\fR \fB(G)\fR
.RS 4
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 mutliple times for every "save"\&. Defautl: 60 seconds\&.
.RE
.PP
guest account = \fIname\fR \fB(G)\fR
.RS 4
Specifies the user that guests should use (default is "nobody")\&. The name should be quoted\&.
.RE
.PP
loginmesg = \fImessage\fR \fB(G)\fR
.RS 4
Sets a message to be displayed when clients logon to the server\&. The message should be in
\fBunix charset\fR
and should be quoted\&. Extended characters are allowed\&.
.RE
.PP
mimic model = \fImodel\fR \fB(G)\fR
.RS 4
Specifies the icon model that appears on clients\&. Defaults to off\&. Examples: RackMac (same as Xserve), PowerBook, PowerMac, Macmini, iMac, MacBook, MacBookPro, MacBookAir, MacPro, AppleTV1,1, AirPort\&.
.RE
.PP
signature = { user:<text> | auto } \fB(G)\fR
.RS 4
Specify a server signature\&. This option is useful while running multiple independent instances of afpd on one machine (eg\&. in clustered environments, to provide fault isolation etc\&.)\&. Default is "auto"\&. "auto" signature type allows afpd generating signature and saving it to
:ETCDIR:/afp_signature\&.conf
automatically (based on random number)\&. "host" signature type switches back to "auto" because it is obsoleted\&. "user" signature type allows administrator to set up a signature string manually\&. The maximum length is 16 characters\&.
.PP
\fBExample.\ \&Three server definitions using 2 different server signatures\fR
.sp
.if n \{\
.RS 4
.\}
.nf
first \-signature user:USERS
                  second \-signature user:USERS
                  third \-signature user:ADMINS
.fi
.if n \{\
.RE
.\}


First two servers will appear as one logical AFP service to the clients \- if user logs in to first one and then connects to second one, session will be automatically redirected to the first one\&. But if client connects to first and then to third, will be asked for password twice and will see resources of both servers\&. Traditional method of signature generation causes two independent afpd instances to have the same signature and thus cause clients to be redirected automatically to server (s)he logged in first\&.
.RE
.PP
volnamelen = \fInumber\fR \fB(G)\fR
.RS 4
Max length of UTF8\-MAC volume name for Mac OS X\&. Note that Hangul is especially sensitive to this\&.
.sp
.if n \{\
.RS 4
.\}
.nf
73:  limit of Mac OS X 10\&.1
                80:  limit for Mac OS X 10\&.4/10\&.5 (default)
                255: limit of spec
.fi
.if n \{\
.RE
.\}
.sp
Mac OS 9 and earlier are not influenced by this, because Maccharset volume name is always limitted to 27 bytes\&.
.RE
.SS "Logging Options"
.PP
log file = \fIlogfile\fR \fB(G)\fR
.RS 4
If not specified Netatalk logs to syslogs daemon facilify\&. Otherwise it logs to
\fBlogfile\fR\&.
.RE
.PP
log level = \fItype:level [type:level \&.\&.\&.]\fR \fB(G)\fR, log level = \fItype:level,[type:level, \&.\&.\&.]\fR \fB(G)\fR
.RS 4
Specify that any message of a loglevel up to the given
\fBloglevel\fR
should be logged\&.
.sp
By default afpd logs to syslog with a default logging setup equivalent to
\fBdefault:note\fR
.sp
logtypes: default, afpdaemon, logger, uamsdaemon
.sp
loglevels: severe, error, warn, note, info, debug, debug6, debug7, debug8, debug9, maxdebug
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBNote\fR
.ps -1
.br
Both logtype and loglevels are case insensitive\&.
.sp .5v
.RE
.RE
.SS "Server Options"
.PP
server options =
\fIoption,[option,\&.\&.\&.]\fR
\fB(G)\fR
.PP
server options =
\fIoption [option \&.\&.\&.]\fR
\fB(G)\fR
.PP
This allows multiple options to be specified in a comma or space delimited format\&. The available options are:
.PP
[no]savepassword \fB(G)\fR
.RS 4
Enables or disables the ability of clients to save passwords locally
.RE
.PP
[no]setpassword \fB(G)\fR
.RS 4
Enables or disables the ability of clients to change their passwords via chooser or the "connect to server" dialog
.RE
.PP
advertise_ssh \fB(G)\fR
.RS 4
Allows 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
\fBsshd\fR(8)
on the server to let things work\&.
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBNote\fR
.ps -1
.br
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\&.
.sp .5v
.RE
.RE
.PP
nozeroconf \fB(G)\fR
.RS 4
Disable automatic Zeroconf
service registration if support was compiled in\&.
.RE
.PP
client_polling \fB(G)\fR
.RS 4
With this switch 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\&.
\fINote\fR: Depending on the number of simultaneously connected clients and the network\'s speed, this can lead to a significant higher load on your network!
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBNote\fR
.ps -1
.br
Do not use this option any longer as Netatalk 2\&.x correctly supports server notifications, allowing connected clients to update folder listings in case another client changed the contents\&.
.sp .5v
.RE
.RE
.PP
[no]icon \fB(G)\fR
.RS 4
[Don\'t] Use the platform\-specific icon\&. Recent Mac OS don\'t display it any longer\&.
.RE
.PP
keepsessions \fB(G)\fR
.RS 4
Enable "Continuous AFP Service"\&. This means the ability to stop the master afpd process with a SIGQUIT signal, possibly install an afpd update and start the afpd process\&. Existing AFP sessions afpd processes will remain unaffected\&. Technically they will be notified of the master afpd shutdown, sleep 15\-20 seconds and then try to reconnect their IPC channel to the master afpd process\&. If this reconnect fails, the sessions are in an undefined state\&. Therefor it\'s absolutely critical to restart the master process in time!
.RE
.PP
noacl2maccess \fB(G)\fR
.RS 4
Don\'t map filesystem ACLs to effective permissions\&.
.RE
.SS "Debug Parameters"
.PP
These options are useful for debugging only\&.
.PP
tickleval = \fInumber\fR \fB(G)\fR
.RS 4
Sets the tickle timeout interval (in seconds)\&. Defaults to 30\&.
.RE
.PP
timeout = \fInumber\fR \fB(G)\fR
.RS 4
Specify the number of tickles to send before timing out a connection\&. The default is 4, therefore a connection will timeout after 2 minutes\&.
.RE
.SH "EXPLANATION OF VOLUME PARAMETERS"
.SS "Parameters"
.PP
The section name defines the volume name which is the name that appears in the Chooser ot the "connect to server" dialog on Macintoshes to represent the appropriate share\&. 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 in afpd\&.conf
.PP
path = \fIPATH\fR \fB(V)\fR
.RS 4
The path name must be a fully qualified path name, or a path name using either the ~ shell shorthand or any of the substitution variables, which are listed below\&.
.sp
The volume name is the name that appears in the Chooser ot the "connect to server" dialog on Macintoshes to represent the appropriate share\&. If volumename is unspecified, the last component of pathname is used\&. No two volumes may have the same name\&. If there are spaces in the name, it should be in quotes (i\&.e\&. "File Share")\&. 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 in afpd\&.conf
.RE
.PP
appledouble = \fIea|v2\fR \fB(V)\fR
.RS 4
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
\fBea\fR\&.
.RE
.PP
vol size limit = \fIsize in MiB\fR \fB(V)\fR
.RS 4
Useful for TimeMachine: limits the reported volume size, thus preventing TM from using the whole real disk space for backup\&. Example: "vol size limit = 1000" would limit the reported disk space to 1 GB\&.
\fBIMPORTANT: \fR
This is an approximated calculation taking into accout the contents of TM 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\&.
.RE
.PP
valid users = \fIusers/groups\fR \fB(V)\fR
.RS 4
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: "valid users = user1 user2 @group"
.RE
.PP
invalid users = \fIusers/groups\fR \fB(V)\fR
.RS 4
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\&.
.RE
.PP
hosts allow = \fIIP host address/IP netmask bits[, \&.\&.\&. ]\fR \fB(V)\fR
.RS 4
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\&.
.sp
Example: hosts allow = 10\&.1\&.0\&.0/16 10\&.2\&.1\&.100 2001:0db8:1234::/48
.RE
.PP
hosts deny = \fIIP host address/IP netmask bits [\&.\&.\&.]\fR \fB(V)\fR
.RS 4
Listed hosts and nets are rejected, all others are allowed\&.
.sp
Example: hosts deny = 192\&.168\&.100/24 10\&.1\&.1\&.1 2001:db8::1428:57ab
.RE
.PP
cnid scheme = \fIbackend\fR \fB(V)\fR
.RS 4
set the CNID backend to be used for the volume, default is [:DEFAULT_CNID_SCHEME:] available schemes: [:COMPILED_BACKENDS:]
.RE
.PP
cnid server = \fIhost[:port]\fR \fB(V)\fR
.RS 4
Query this servername or IP address (default:\fIlocalhost\fR) and port (default:
\fI4700\fR) for CNIDs\&. Only used with CNID backend "\fIdbd\fR"\&. This option here overrides any setting from
afp\&.conf:\fBcnid server\fR\&.
.RE
.PP
ea = \fInone|auto|sys|ad\fR
.RS 4
Specify how Extended Attributes
are stored\&.
\fBauto\fR
is the default\&.
.PP
auto
.RS 4
Try
\fBsys\fR
(by setting an EA on the shared directory itself), fallback to
\fBad\fR\&. Requires writeable volume for perfoming test\&.
\fBoptions:ro\fR
overwrites
\fBauto\fR
with
\fBnone\fR\&. Use explicit
\fBea:sys|ad\fR
for read\-only volumes where appropiate\&.
.RE
.PP
sys
.RS 4
Use filesystem Extended Attributes\&.
.RE
.PP
ad
.RS 4
Use files in
\fI\&.AppleDouble\fR
directories\&.
.RE
.PP
none
.RS 4
No Extended Attributes support\&.
.RE
.RE
.PP
mac charset = \fICHARSET\fR \fB(V)\fR
.RS 4
specifies the Mac client charset for this Volume, e\&.g\&.
\fIMAC_ROMAN\fR,
\fIMAC_CYRILLIC\fR\&. 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
.RE
.PP
casefold = \fBoption\fR
.RS 4
The casefold option handles, if the case of filenames should be changed\&. The available options are:
.sp
\fBtolower\fR
\- Lowercases names in both directions\&.
.sp
\fBtoupper\fR
\- Uppercases names in both directions\&.
.sp
\fBxlatelower\fR
\- Client sees lowercase, server sees uppercase\&.
.sp
\fBxlateupper\fR
\- Client sees uppercase, server sees lowercase\&.
.RE
.PP
password = \fIpassword\fR \fB(V)\fR
.RS 4
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)\&.
.RE
.PP
file perm = \fImode\fR \fB(V)\fR, directory perm = \fImode\fR \fB(V)\fR
.RS 4
Add(or) with the client requested permissions:
\fBfile perm\fR
is for files only,
\fBdirectory perm\fR
is for directories only\&. Use without
\fBvol options = noupriv\fR\&.
.PP
\fBExample.\ \&Volume for a collaborative workgroup\fR
.sp
.if n \{\
.RS 4
.\}
.nf
file perm = 0660
directory perm = 0770
.fi
.if n \{\
.RE
.\}

.RE
.PP
umask = \fImode\fR \fB(V)\fR
.RS 4
set perm mask\&. Use without
\fBvol options = noupriv\fR\&.
.RE
.PP
preexec = \fIcommand\fR \fB(V)\fR
.RS 4
command to be run when the volume is mounted, ignored for user defined volumes
.RE
.PP
postexec = \fIcommand\fR \fB(V)\fR
.RS 4
command to be run when the volume is closed, ignored for user defined volumes
.RE
.PP
root preexec = \fIcommand\fR \fB(V)\fR
.RS 4
command to be run as root when the volume is mounted, ignored for user defined volumes
.RE
.PP
root postexec = \fIcommand\fR \fB(V)\fR
.RS 4
command to be run as root when the volume is closed, ignored for user defined volumes
.RE
.PP
rolist = \fBusers/groups\fR \fB(V)\fR
.RS 4
Allows certain users and groups to have read\-only access to a share\&. This follows the allow option format\&.
.RE
.PP
rwlist = \fIusers/groups\fR \fB(V)\fR
.RS 4
Allows certain users and groups to have read/write access to a share\&. This follows the allow option format\&.
.RE
.PP
veto files = \fIvetoed names\fR \fB(V)\fR
.RS 4
hide files and directories,where the path matches one of the \'/\' delimited vetoed names\&. The veto string must always be terminated with a \'/\', eg\&. "veto1/", "veto1/veto2/"\&.
.RE
.SS "Volume options"
.PP
vol options =
\fIoption,[option,\&.\&.\&.]\fR
\fB(V)\fR
.PP
vol options =
\fIoption [option \&.\&.\&.]\fR
\fB(V)\fR
.PP
This allows multiple options to be specified in a comma or space delimited format\&. The available options are:
.PP
searchdb \fB(V)\fR
.RS 4
Use fast CNID database namesearch instead of slow recursive filesystem search\&. Relies on a consistent CNID database, ie Samba or local filesystem access lead to inaccurate or wrong results\&. Works only for "dbd" CNID db volumes\&.
.RE
.PP
tm \fB(V)\fR
.RS 4
Enable Time Machine suport for this volume\&.
.RE
.PP
invisibledots \fB(V)\fR
.RS 4
make dot files invisible\&. Use without
\fBnousedots\fR\&.
.RE
.PP
nonetids \fB(V)\fR
.RS 4
Try to force ACL unawareness on the client\&.
.RE
.PP
preexec_close \fB(V)\fR
.RS 4
a non\-zero return code from preexec close the volume being immediately, preventing clients to mount/see the volume in question\&.
.RE
.PP
ro \fB(V)\fR
.RS 4
Specifies the share as being read only for all users\&. The \&.AppleDB directory has to be writeable, you can use the
\fBvol dbpath\fR
option to relocate it\&. Overwrites
\fBea = auto\fR
with
\fBea = none\fR
.RE
.PP
root_preexec_close \fB(V)\fR
.RS 4
a non\-zero return code from root_preexec closes the volume immediately, preventing clients to mount/see the volume in question\&.
.RE
.PP
noupriv \fB(V)\fR
.RS 4
Don\'t use AFP3 unix privileges\&. This should not be set for OS X clients\&. See also: "\fBfile perm =\fR" and "\fBdirectory perm =\fR"\&.
.RE
.PP
nousedots \fB(V)\fR
.RS 4
do :hex translation for dot files\&. See also
\fBinvisibledots\fR\&.
.RE
.PP
nodev \fB(V)\fR
.RS 4
always use 0 for device number, helps when the device number is not constant across a reboot, cluster, \&.\&.\&.
.RE
.PP
nohex \fB(V)\fR
.RS 4
Disables :hex translations for anything except dot files\&. This option makes the
\'/\' character illegal\&.
.RE
.PP
nostat \fB(V)\fR
.RS 4
don\'t stat volume path when enumerating volumes list, useful for automounting or volumes created by a preexec script\&.
.RE
.SH "CNID BACKENDS"
.PP
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
\&.AppleDB
folder in the volume root\&.
.PP
cdb
.RS 4
"Concurrent database", backend is based on Sleepycat\'s Berkely DB\&. With this backend several
\fBafpd\fR
deamons access the CNID database directly\&. Berkeley DB locking is used to synchronize access, if more than one
\fBafpd\fR
process is active for a volume\&. The drawback is, that the crash of a single
\fBafpd\fR
process might corrupt the database\&.
.RE
.PP
dbd
.RS 4
Access to the CNID database is restricted to the
\fBcnid_metad\fR
daemon process\&.
\fBafpd\fR
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
\fBcdb\fR
.RE
.PP
last
.RS 4
This backend is an exception, in terms of ID persistency\&. ID\'s are only valid for the current session\&. This is basically what
\fBafpd\fR
did in the 1\&.5 (and 1\&.6) versions\&. This backend is still available, as it is useful for e\&.g\&. sharing cdroms\&.
.sp
\fBWarning\fR: It is
\fINOT\fR
recommended to use this backend for volumes anymore, as
\fBafpd\fR
now relies heavily on a persistent ID database\&. Aliases will likely not work and filename mangling is not supported\&.
.RE
.PP
Even though
\fB\&./configure \-\-help\fR
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\&.
.SH "CHARSET OPTIONS"
.PP
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\&.
.PP
\fBafpd\fR
needs a way to preserve extended macintosh characters, or characters illegal in unix filenames, when saving files on a unix filesystem\&. 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 will be converted as to :xx notation as well\&. \'/\' will be encoded to
:2f, if
\fBusedots\fR
is not specified, a leading dot \'\&.\' will be encoded as
:2e\&.
.PP
This version now uses UTF\-8 as the default encoding for names\&. Special characters, like \'/\' and a leading \'\&.\' will still be CAP style encoded \&.
.PP
The
\fBvol charset\fR
option will allow you to select another volume encoding\&. E\&.g\&. for western users another useful setting could be volcharset ISO\-8859\-15\&.
\fBapfd\fR
will accept any
\fBiconv\fR(1)
provided charset\&. If a character cannot be converted from the mac codepage to the selected volcharset, afpd will save it as a CAP encoded character\&. For AFP3 clients,
\fBafpd\fR
will convert the UTF\-8
character to
\fBmac charset\fR
first\&. If this conversion fails, you\'ll receive a \-50 error on the mac\&.
.PP
\fINote\fR: Whenever you can, please stick with the default UTF\-8 volume format\&.
.SH "SEE ALSO"
.PP
\fBafpd\fR(8),
\fBafppasswd\fR(5),
\fBafp_signature.conf\fR(5),
\fBcnid_metad\fR(8)