external/bsd/dhcpcd/dist/dhcpcd-hooks/50-ntp.conf

   1 # Sample dhcpcd hook script for ntp
   2 # Like our resolv.conf hook script, we store a database of ntp.conf files
   3 # and merge into /etc/ntp.conf
   4
   5 # You can set the env var NTP_CONF to another file like this
   6 #   dhcpcd -e NTP_CONF=/usr/pkg/etc/ntpd.conf
   7 # or by adding this to /etc/dhcpcd.enter-hook
   8 #   NTP_CONF=/usr/pkg/etc/ntpd.conf
   9 # to use openntpd from pkgsrc instead of the system provided ntp.
  10
  11 # Detect OpenRC or BSD rc
  12 # Distributions may want to just have their command here instead of this
  13 if type rc-service >/dev/null 2>&1 && rc-service --exists ntpd; then
  14         ntpd_restart_cmd="rc-service ntpd -- -Ds restart"
  15 elif [ -x /etc/rc.d/ntpd ]; then
  16         ntpd_restart_cmd="/etc/rc.d/ntpd status >/dev/null 2>&1 && /etc/rc.d/ntpd restart"
  17 elif [ -x /usr/local/etc/rc.d/ntpd ]; then
  18         ntpd_restart_cmd="/usr/local/etc/rc.d/ntpd status >/dev/null 2>&1 && /usr/local/etc/rc.d/ntpd restart"
  19 fi
  20
  21 ntp_conf_dir="$state_dir/ntp.conf"
  22 ntp_conf=${NTP_CONF:-/etc/ntp.conf}
  23
  24 build_ntp_conf()
  25 {
  26         local cf="$state_dir/ntp.conf.$interface"
  27         local interfaces= header= srvs= servers= x=
  28
  29         # Build a list of interfaces
  30         interfaces=$(list_interfaces "$ntp_conf_dir")
  31
  32         if [ -n "$interfaces" ]; then
  33                 # Build the header
  34                 for x in ${interfaces}; do
  35                         header="$header${header:+, }$x"
  36                 done
  37
  38                 # Build a server list
  39                 srvs=$(cd "$ntp_conf_dir";
  40                         key_get_value "server " $interfaces)
  41                 if [ -n "$srvs" ]; then
  42                         for x in $(uniqify $srvs); do
  43                                 servers="${servers}server $x\n"
  44                         done
  45                 fi
  46         fi
  47
  48         # Merge our config into ntp.conf
  49         [ -e "$cf" ] && rm -f "$cf"
  50         [ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
  51         if [ -e "$ntp_conf" ]; then
  52                 remove_markers "$signature_base" "$signature_base_end" \
  53                         "$ntp_conf" > "$cf"
  54         fi
  55         if [ -n "$servers" ]; then
  56                 echo "$signature_base${header:+ $from }$header" >> "$cf"
  57                 printf "$search$servers" >> "$cf"
  58                 echo "$signature_base_end${header:+ $from }$header" >> "$cf"
  59         fi
  60
  61         # If we changed anything, restart ntpd
  62         if change_file "$ntp_conf" "$cf"; then
  63                 [ -n "$ntpd_restart_cmd" ] && eval $ntpd_restart_cmd
  64         fi
  65 }
  66
  67 add_ntp_conf()
  68 {
  69         local cf="$ntp_conf_dir/$interface" x=
  70
  71         [ -e "$cf" ] && rm "$cf"
  72         [ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
  73         if [ -n "$new_ntp_servers" ]; then
  74                 for x in $new_ntp_servers; do
  75                         echo "server $x" >> "$cf"
  76                 done
  77         fi
  78         build_ntp_conf
  79 }
  80
  81 remove_ntp_conf()
  82 {
  83         if [ -e "$ntp_conf_dir/$interface" ]; then
  84                 rm "$ntp_conf_dir/$interface"
  85         fi
  86         build_ntp_conf
  87 }
  88
  89 case "$reason" in
  90 BOUND|INFORM|REBIND|REBOOT|RENEW|TIMEOUT|STATIC)        add_ntp_conf add;;
  91 PREINIT|EXPIRE|FAIL|IPV4LL|NAK|NOCARRIER|RELEASE|STOP)  remove_ntp_conf del;;
  92 esac