alextafoya.com | DNS-321 as Time Capsule for Mountain Lion

There are several places on the web to find tutorials on setting up a DNS-323 for Time Machine (for example: http://dns323.kood.org), but I couldn’t find sites that discussed setting it up a DNS-321. Here is what I did to get it working.

Root the DNS321 by installing fun_plug

Download fun_plug and fun+plug.tgz
Share the root of DNS-321 via samba (smb)
Add executable rights to the fun_plug script (chmod +x in terminal) from your workstation
Copy fun_plug and fun_plug.tgz to root of DNS321 and reboot (wait a bit as it takes a while to run)

Setup the root user account for SSH access

Connect to the DNS-321 via Telnet :
```
$ telnet your.nas.ip.address
```
Change the shell of the root account
```
~# usermod -s /ffp/bin/bash root
```
Create a home folder for the root account
```
~# mkdir -p /ffp/home/root/
```
Set the home folder of the root account to the be the folder that was created in the previous step
```
~# usermod -d /ffp/home/root/ root
```
If the above fails, manually edit the /etc/passwd file so the root account looks like this
```
root:x:0:0:Linux User,,,:/ffp/home/root:/ffp/bin/bash
```
Then, run the following command
```
~# pwconv
```
Set the root account to have a password
```
~# passwd
```
Login as the root account
```
~# login
```
Save the root password you created by running the following command. This command invokes another shell (.sh) script which copies the password-related files to data partitions in Flash memory (mtd1 and mtd2).
```
~# store-passwd.sh
```

Activate the SSH service by running the following commands:

~# chmod a+x /ffp/start/sshd.sh
# sh /ffp/start/sshd.sh start

Install Netatalk (AFPD) on the DNS-321

Modify /ffp/etc/netatalk/afpd.conf, adding the following to the bottom of the file

- -tcp -noddp -uamlist uams_dhx2.so,uams_clrtxt.so -setuplog "default log_info /ffp/var/run/afpd.log" -cnidserver localhost

Install libgcrypt, libgpg-error, netatalk using slacker
```
~# slacker -Ui s:
```
Install libdb5 by either compiling your own or using the one in the following forum: http://forum.dsmg600.info.

Create two startup scripts: /ffp/start/afpd.sh and /ffp/start/cnid_metad.sh:

/ffp/start/afpd.sh

~#!/ffp/bin/sh
# PROVIDE: afpd
# REQUIRE: cnid_metad

. /ffp/etc/ffp.subr

name="afpd"
command="/ffp/sbin/$name"

run_rc_command "$1"

/ffp/start/cnid_metad.sh

~#!/ffp/bin/sh

# PROVIDE: cnid_metad
# REQUIRE: LOGIN

. /ffp/etc/ffp.subr

name="cnid_metad"
command="/ffp/sbin/$name"

run_rc_command "$1"

Make the scripts executable by running the following commands:

~# chmod +x /ffp/start/afpd.sh
# chmod +x /ffp/start/cfid_metad.sh

Create /ffp/etc/avahi/services/afpd.service and set its contents be as shown below:

<?xml version="1.0" standalone="no"?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">

<service-group>

    <name replace-wildcards="yes">%h</name>

    <service>
        <type>_afpovertcp._tcp</type>
        <port>548</port>
    </service>

</service-group>

Use the “vipw” command and change some details for the default “nobody” user so that Mac OS X can use that user to log in.
```
nobody:x:501:501:Linux User,,,:/home/nobody:/ffp/bin/bash
```
Give a password to that user and store the password (in clear text) in the user’s home directory as shown here.
```
~# passwd nobody
# cd /home
# mkdir nobody
# echo "secret" &gt; nobody/.passwd
# chown -R nobody: nobody
```
Store this user’s information in the flash memory of the DNS-321. Do this by running the following command
```
~# store-passwd.sh
```

Modify /ffp/etc/netatalk/AppleVolumes.default to add the required shares. Mine looks like:

~# The "~" below indicates that Home directories are visible by default.
# If you do not wish to have people accessing their Home directories,
# please put a pound sign in front of the tilde or delete it.
# ~     
/mnt/HD_a2/TimeMachine options:usedots,upriv,tm

Start netatalk
```
~# /ffp/start/afpd.sh start
```

Install Avahi (bonjour) on the DNS-321

Install libdaemon and avahi with slacker:
```
~# slacker -Ui s:
```

Add an avahi user:

~# groupadd -g 50 avahi

~# useradd -u 50 -g avahi -d /tmp -s /bin/false avahi

Create an avahi startup script called /ffp/start/avahi.sh that contains the following:

~#!/ffp/bin/sh

# PROVIDE: avahi
# REQUIRE: SERVERS

. /ffp/etc/ffp.subr

name="avahi"
command="/ffp/sbin/avahi-daemon"
avahi_daemon_flags="-D -s"
required_files="/ffp/etc/avahi/avahi-daemon.conf /ffp/etc/avahi/hosts"

start_cmd="avahi_start"

avahi_start()
{
# need avahi user and group for priviledge separation
if ! grep '^avahi:' /etc/passwd &gt;/dev/null; then
echo 'avahi:x:50:50:Avahi Daemon:/no/where:/bin/false' &gt;&gt;/etc/passwd
fi
if ! grep '^avahi:' /etc/shadow &gt;/dev/null; then
echo 'avahi:*:14493:0:99999:7:::' &gt;&gt;/etc/shadow
fi
if ! grep '^avahi:' /etc/group &gt;/dev/null; then
echo 'avahi::50:avahi' &gt;&gt;/etc/group
fi

proc_start $command
}

run_rc_command "$1"

Make the file executable so that avahi starts when the DNS-323 boots:
```
~# chmod +x /ffp/start/avahi.sh
```

To change the icon for the DNS-321 that shows up in Mac OS X Finder, create the file /ffp/etc/avahi/services/device-info.service and set its contents to the following:

<?xml version="1.0" standalone="no"?><!--*-nxml-*-->
<service-group>
        <name replace-wildcards="yes">%h</name>
        <service>
                <type>_device-info._tcp</type>
                <port>0</port>
                <txt-record>model=RackMac</txt-record>
        </service>
</service-group>

Launch avahi
```
~# /ffp/start/avahi.sh
```

You should now see your DNS-321 show up in Finder.