| 1 | # Remove some system services that don't make sense in live sessions. |
|---|
| 2 | # The user can add more items by declaring space separated RM_SYSTEM_SERVICES |
|---|
| 3 | # or RM_THIN_SYSTEM_SERVICES lists in lts.conf. |
|---|
| 4 | # The RM_THIN_SYSTEM_SERVICES list is ignored by fat clients. |
|---|
| 5 | # KEEP_SYSTEM_SERVICES is a space separated whitelist of services. |
|---|
| 6 | |
|---|
| 7 | allowed_services() { |
|---|
| 8 | local service |
|---|
| 9 | |
|---|
| 10 | echo "$@" | sed 's/#.*//' | while read service; do |
|---|
| 11 | case " $KEEP_SYSTEM_SERVICES " in |
|---|
| 12 | *" $service "*) |
|---|
| 13 | ;; |
|---|
| 14 | *) |
|---|
| 15 | echo -n " $service" |
|---|
| 16 | ;; |
|---|
| 17 | esac |
|---|
| 18 | done |
|---|
| 19 | } |
|---|
| 20 | |
|---|
| 21 | # $RM_SYSTEM_SERVICES are removed for all clients |
|---|
| 22 | rm_services="$(allowed_services "$RM_SYSTEM_SERVICES |
|---|
| 23 | alsa-restore # Restore sound card(s') mixer state(s) |
|---|
| 24 | alsa-store # Save sound card(s') mixer state(s) |
|---|
| 25 | dnsmasq # A lightweight DHCP and caching DNS server |
|---|
| 26 | exim4 # exim4 Mail Transport Agent |
|---|
| 27 | grub-common # Record successful boot for GRUB |
|---|
| 28 | lightdm # Light Display Manager |
|---|
| 29 | lvm2-lvmetad # LVM2 metadata daemon |
|---|
| 30 | mdadm # MD monitoring daemon |
|---|
| 31 | ModemManager # Modem manager |
|---|
| 32 | modemmanager # Modem manager (older versions) |
|---|
| 33 | nbd-client # Network Block Device client (we use nbd-disconnect) |
|---|
| 34 | nbd-server # Network Block Device server |
|---|
| 35 | plymouth-stop # Hide the splash screen |
|---|
| 36 | rfkill-store # Store software rfkill state |
|---|
| 37 | shared-folders # Shared folders service |
|---|
| 38 | ssh # OpenSSH server |
|---|
| 39 | tty2 # Getty |
|---|
| 40 | tty3 # Getty |
|---|
| 41 | tty4 # Getty |
|---|
| 42 | tty5 # Getty |
|---|
| 43 | tty6 # Getty |
|---|
| 44 | unattended-upgrades # Check if unattended upgrades are being applied |
|---|
| 45 | urandom # Save and restore random seed between restarts |
|---|
| 46 | x2goserver # X2Go daemon responsible for post-session clean-ups |
|---|
| 47 | ")" |
|---|
| 48 | |
|---|
| 49 | # $RM_THIN_SYSTEM_SERVICES are removed for thin clients |
|---|
| 50 | if ! boolean_is_true "$LTSP_FATCLIENT"; then |
|---|
| 51 | rm_services="$rm_services $(allowed_services "$RM_THIN_SYSTEM_SERVICES |
|---|
| 52 | accounts-daemon # Accounts Service |
|---|
| 53 | acpid # ACPI daemon |
|---|
| 54 | apparmor # AppArmor initialization |
|---|
| 55 | apport # Automatic crash report generation |
|---|
| 56 | atd # Deferred execution scheduler |
|---|
| 57 | avahi-daemon # mDNS/DNS-SD daemon |
|---|
| 58 | bluetooth # Bluetooth daemon |
|---|
| 59 | brltty # Braille terminal driver |
|---|
| 60 | cgmanager # Cgroup management daemon |
|---|
| 61 | cups # CUPS Printing spooler and server |
|---|
| 62 | cups-browsed # CUPS browse daemon |
|---|
| 63 | kerneloops # Collects and submits kernel crash signatures |
|---|
| 64 | network-manager # Network connection manager |
|---|
| 65 | NetworkManager # Network Manager |
|---|
| 66 | NetworkManager-wait-online # Network Manager Wait Online |
|---|
| 67 | NetworkManager-script-dispatcher # Network Manager Script Dispatcher Service |
|---|
| 68 | polkitd # Authenticate and Authorize Users to Run Privileged Tasks |
|---|
| 69 | systemd-logind # Login Service |
|---|
| 70 | teamviewerd # TeamViewer remote control daemon |
|---|
| 71 | ufw # Uncomplicated Firewall |
|---|
| 72 | upstart-socket-bridge # Bridge socket events into upstart |
|---|
| 73 | virtualbox # VirtualBox Linux kernel module |
|---|
| 74 | vboxweb # VirtualBox Web Service |
|---|
| 75 | whoopsie # crash report submission daemon |
|---|
| 76 | wpa_supplicant # WPA supplicant |
|---|
| 77 | ")" |
|---|
| 78 | |
|---|
| 79 | # For low RAM thin clients, disable whatever isn't essential for booting |
|---|
| 80 | memtotal=$(awk '/^MemTotal:/ { print int($2/1024) }' /proc/meminfo) |
|---|
| 81 | RM_RAM_THRESHOLD=${RM_RAM_THRESHOLD:-200} |
|---|
| 82 | if [ "$memtotal" -le "$RM_RAM_THRESHOLD" ]; then |
|---|
| 83 | rm_services="$rm_services $(allowed_services "$RM_LOW_RAM_SERVICES |
|---|
| 84 | anacron # anac(h)ronistic cron |
|---|
| 85 | #dbus # D-Bus system message bus - systemd depends on it |
|---|
| 86 | cron # Regular background program processing daemon |
|---|
| 87 | getty@ # Getty on %I |
|---|
| 88 | rsyslog # System logging daemon |
|---|
| 89 | tty1 # Getty |
|---|
| 90 | upstart-udev-bridge # Bridge udev events into upstart |
|---|
| 91 | ")" |
|---|
| 92 | fi |
|---|
| 93 | fi |
|---|
| 94 | |
|---|
| 95 | # We don't need NFS-related services if we're not using nfs |
|---|
| 96 | if ! grep -q nfs /etc/fstab; then |
|---|
| 97 | rm_services="$rm_services $(allowed_services " |
|---|
| 98 | gssd # rpcsec_gss daemon |
|---|
| 99 | idmapd # NFSv4 id <-> name mapper |
|---|
| 100 | nfs-blkmap # pNFS block layout mapping daemon |
|---|
| 101 | nfs-kernel-server # Kernel NFS server support |
|---|
| 102 | nfs-mountd # NFS Mount Daemon |
|---|
| 103 | nfs-server # NFS server and services |
|---|
| 104 | nfs-utils # NFS server and client services |
|---|
| 105 | statd # NSM status monitor |
|---|
| 106 | ")" |
|---|
| 107 | fi |
|---|
| 108 | |
|---|
| 109 | for service in $rm_services; do |
|---|
| 110 | rm -f /etc/rc?.d/???"$service" "/etc/init.d/$service" "/etc/init/$service.conf" "/lib/systemd/system/$service."* "/etc/systemd/system/$service."* |
|---|
| 111 | done |
|---|
