Author: Alex Tafoya

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

1. Download fun_plug and fun+plug.tgz
2. Share the root of DNS-321 via samba (smb)
3. Add executable rights to the fun_plug script (chmod +x in terminal) from your workstation
4. 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

1. Connect to the DNS-321 via Telnet :

   $ telnet your.nas.ip.address

2. Change the shell of the root account

   ~# usermod -s /ffp/bin/bash root

3. Create a home folder for the root account

   ~# mkdir -p /ffp/home/root/

4. 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

5. Set the root account to have a password

   ~# passwd

6. Login as the root account

   ~# login

7. 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

8. 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

1. 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

2. Install libgcrypt, libgpg-error, netatalk using slacker

   ~# slacker -Ui s:

3. Install libdb5 by either compiling your own or using the one in the following forum: http://forum.dsmg600.info.
4. 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"

5. Make the scripts executable by running the following commands:

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

6. 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>

7. 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

8. 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" > nobody/.passwd
   # chown -R nobody: nobody

9. Store this user’s information in the flash memory of the DNS-321. Do this by running the following command

   ~# store-passwd.sh

10. 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

11. Start netatalk

    ~# /ffp/start/afpd.sh start

Install Avahi (bonjour) on the DNS-321

1. Install libdaemon and avahi with slacker:

   ~# slacker -Ui s:

2. Add an avahi user:

   ~# groupadd -g 50 avahi

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

3. 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 >/dev/null; then
   echo 'avahi:x:50:50:Avahi Daemon:/no/where:/bin/false' >>/etc/passwd
   fi
   if ! grep '^avahi:' /etc/shadow >/dev/null; then
   echo 'avahi:*:14493:0:99999:7:::' >>/etc/shadow
   fi
   if ! grep '^avahi:' /etc/group >/dev/null; then
   echo 'avahi::50:avahi' >>/etc/group
   fi
   
   proc_start $command
   }
   
   run_rc_command "$1"

4. Make the file executable so that avahi starts when the DNS-323 boots:

   ~# chmod +x /ffp/start/avahi.sh

5. 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>

6. Launch avahi

   ~# /ffp/start/avahi.sh

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