etc/rc.d/named

   1 #!/bin/sh
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # PROVIDE: named
   7 # REQUIRE: SERVERS cleanvar
   8 # KEYWORD: shutdown
   9
  10 . /etc/rc.subr
  11
  12 name="named"
  13 rcvar=named_enable
  14
  15 command="/usr/sbin/named"
  16 extra_commands="reload"
  17
  18 start_precmd="named_precmd"
  19 start_postcmd="make_symlinks"
  20 reload_cmd="named_reload"
  21 stop_cmd="named_stop"
  22 stop_postcmd="named_poststop"
  23
  24 # If running in a chroot cage, ensure that the appropriate files
  25 # exist inside the cage, as well as helper symlinks into the cage
  26 # from outside.
  27 #
  28 # As this is called after the is_running and required_dir checks
  29 # are made in run_rc_command(), we can safely assume ${named_chrootdir}
  30 # exists and named isn't running at this point (unless forcestart
  31 # is used).
  32 #
  33 chroot_autoupdate()
  34 {
  35         # Create (or update) the chroot directory structure
  36         #
  37         if [ -r /etc/mtree/BIND.chroot.dist ]; then
  38                 mtree -deU -f /etc/mtree/BIND.chroot.dist \
  39                     -p ${named_chrootdir}
  40         else
  41                 warn "/etc/mtree/BIND.chroot.dist missing,"
  42                 warn "chroot directory structure not updated"
  43         fi
  44
  45         # Create /etc/namedb symlink
  46         #
  47         if [ ! -L /etc/namedb ]; then
  48                 if [ -d /etc/namedb ]; then
  49                         warn "named chroot: /etc/namedb is a directory!"
  50                 elif [ -e /etc/namedb ]; then
  51                         warn "named chroot: /etc/namedb exists!"
  52                 else
  53                         ln -s ${named_chrootdir}/etc/namedb /etc/namedb
  54                 fi
  55         else
  56                 # Make sure it points to the right place.
  57                 ln -shf ${named_chrootdir}/etc/namedb /etc/namedb
  58         fi
  59
  60         # Mount a devfs in the chroot directory if needed
  61         #
  62         umount ${named_chrootdir}/dev 2>/dev/null
  63         devfs_domount ${named_chrootdir}/dev devfsrules_hide_all
  64         devfs -m ${named_chrootdir}/dev rule apply path null unhide
  65         devfs -m ${named_chrootdir}/dev rule apply path random unhide
  66
  67         # Copy local timezone information if it is not up to date.
  68         #
  69         if [ -r /etc/localtime ]; then
  70                 cmp -s /etc/localtime "${named_chrootdir}/etc/localtime" ||
  71                     cp -p /etc/localtime "${named_chrootdir}/etc/localtime"
  72         fi
  73 }
  74
  75 # Make symlinks to the correct pid file
  76 #
  77 make_symlinks()
  78 {
  79         checkyesno named_symlink_enable &&
  80             ln -fs "${named_chrootdir}${pidfile}" ${pidfile}
  81 }
  82
  83 named_reload()
  84 {
  85         ${command%/named}/rndc reload
  86 }
  87
  88 named_stop()
  89 {
  90         # This duplicates an undesirably large amount of code from the stop
  91         # routine in rc.subr in order to use rndc to shut down the process,
  92         # and to give it a second chance in case rndc fails.
  93         rc_pid=$(check_pidfile $pidfile $command)
  94         if [ -z "$rc_pid" ]; then
  95                 [ -n "$rc_fast" ] && return 0
  96                 _run_rc_notrunning
  97                 return 1
  98         fi
  99         echo 'Stopping named.'
 100         if ${command%/named}/rndc stop 2>/dev/null; then
 101                 wait_for_pids $rc_pid
 102         else
 103                 echo -n 'rndc failed, trying kill: '
 104                 kill -TERM $rc_pid
 105                 wait_for_pids $rc_pid
 106         fi
 107 }
 108
 109 named_poststop()
 110 {
 111         if [ -n "${named_chrootdir}" -a -c ${named_chrootdir}/dev/null ]; then
 112                 umount ${named_chrootdir}/dev 2>/dev/null || true
 113         fi
 114 }
 115
 116 named_precmd()
 117 {
 118         # Is the user using a sandbox?
 119         #
 120         if [ -n "$named_chrootdir" ]; then
 121                 rc_flags="$rc_flags -t $named_chrootdir"
 122                 checkyesno named_chroot_autoupdate && chroot_autoupdate
 123         else
 124                 named_symlink_enable=NO
 125         fi
 126
 127         # Create an rndc.key file for the user if none exists
 128         #
 129         if [ -s "${named_chrootdir}/etc/namedb/rndc.conf" ]; then
 130                 return 0
 131         fi
 132         confgen_command="${command%/named}/rndc-confgen -a -b256 -u $named_uid \
 133             -c ${named_chrootdir}/etc/namedb/rndc.key"
 134         if [ -s "${named_chrootdir}/etc/namedb/rndc.key" ]; then
 135                 case `stat -f%Su ${named_chrootdir}/etc/namedb/rndc.key` in
 136                 root|$named_uid) ;;
 137                 *) $confgen_command ;;
 138                 esac
 139         else
 140                 $confgen_command
 141         fi
 142 }
 143
 144 load_rc_config $name
 145 # Updating the following variables requires that rc.conf be loaded first
 146 #
 147 required_dirs="$named_chrootdir"        # if it is set, it must exist
 148 pidfile="${named_pidfile:-/var/run/named/pid}"
 149 command_args="-u ${named_uid:=root}"
 150
 151 run_rc_command "$1"