etc/rc.d/named

   1 #!/bin/sh
   2 #
   3 # $NetBSD: named,v 1.25 2014/07/13 22:06:56 tls Exp $
   4 #
   5
   6 # PROVIDE: named
   7 # REQUIRE: NETWORKING mountcritremote syslogd
   8 # BEFORE:  DAEMON
   9 # KEYWORD: chrootdir
  10
  11 $_rc_subr_loaded . /etc/rc.subr
  12
  13 name="named"
  14 rcvar=$name
  15 command="/usr/sbin/${name}"
  16 pidfile="/var/run/${name}/${name}.pid"
  17 start_precmd="named_precmd"
  18 extra_commands="reload"
  19 required_dirs="$named_chrootdir"        # if it is set, it must exist
  20
  21 named_migrate()
  22 {
  23         local src="$1"
  24         local dst="$2$1"
  25         echo "Migrating $src to $dst"
  26 (
  27         diff=false
  28         cd "$src"
  29         mkdir -p "$dst"
  30         for f in $(find . -type f)
  31         do
  32                 f="${f##./}"
  33                 case "$f" in
  34                 */*)
  35                         ds="$(dirname "$f")"
  36                         dd="$dst/$ds"
  37                         mkdir -p "$dd"
  38                         chmod "$(stat -f "%p" "$ds" |
  39                             sed -e 's/.*\([0-7][0-7][0-7][0-7]\)$/\1/g')" "$dd"
  40                         chown "$(stat -f %u:%g "$ds")" "$dd"
  41                         ;;
  42                 *)
  43                         ;;
  44                 esac
  45                 if [ -r "$dst/$f" ]
  46                 then
  47                         if ! cmp "$f" "$dst/$f"; then
  48                                 diff=true
  49                         fi
  50                 else
  51                         cp -p "$f" "$dst/$f"
  52                 fi
  53         done
  54         if $diff; then
  55                 echo "Cannot complete migration because files are different"
  56                 echo "Run 'diff -r $src $dst' resolve the differences"
  57         else
  58                 rm -fr "$src"
  59                 ln -s "$dst" "$src"
  60         fi
  61 )
  62 }
  63
  64 named_precmd()
  65 {
  66         if [ ! -e "/etc/rndc.key" ]; then
  67                 echo "Generating rndc.key"
  68                 /usr/sbin/rndc-confgen -a
  69         fi
  70
  71         if [ -z "$named_chrootdir" ]; then
  72                 if [ ! -d "/etc/namedb/keys" ]; then
  73                         mkdir -m 775 "/etc/namedb/keys"
  74                         chown named:named "/etc/namedb/keys"
  75                 fi
  76                 return 0;
  77         fi
  78
  79         # If running in a chroot cage, ensure that the appropriate files
  80         # exist inside the cage, as well as helper symlinks into the cage
  81         # from outside.
  82         #
  83         # As this is called after the is_running and required_dir checks
  84         # are made in run_rc_command(), we can safely assume ${named_chrootdir}
  85         # exists and named isn't running at this point (unless forcestart
  86         # is used).
  87         #
  88         case "$($command -v)" in
  89         BIND*)  # 9 no group, named-xfer, or ndc
  90                 ;;
  91         named*) # 4 and 8
  92                 rc_flags="-g named $rc_flags"
  93                 if [ ! -x "${named_chrootdir}/usr/libexec/named-xfer" -o \
  94                     "${named_chrootdir}/usr/libexec/named-xfer" -ot \
  95                     /usr/libexec/named-xfer ]; then
  96                         rm -f "${named_chrootdir}/usr/libexec/named-xfer"
  97                         cp -p /usr/libexec/named-xfer \
  98                             "${named_chrootdir}/usr/libexec"
  99                 fi
 100                 ln -fs "${named_chrootdir}/var/run/ndc" /var/run/ndc
 101                 ;;
 102         esac
 103
 104         for i in null random urandom; do
 105                 if [ ! -c "${named_chrootdir}/dev/$i" ]; then
 106                         rm -f "${named_chrootdir}/dev/$i"
 107                         (cd /dev &&
 108                             /bin/pax -rw -pe "$i" "${named_chrootdir}/dev")
 109                 fi
 110         done
 111
 112         if [ ! -h /etc/namedb ]; then
 113                 named_migrate /etc/namedb ${named_chrootdir}
 114         fi
 115
 116         for i in named.conf rndc.key; do
 117                 if [ \( -r "/etc/$i" \) -a \( ! -h "/etc/$i" \) -a \
 118                      \( ! -r "${named_chrootdir}/etc/$i" \) ]; then
 119                         mv "/etc/$i" "${named_chrootdir}/etc/$i"
 120                         ln -s "${named_chrootdir}/etc/$i" "/etc/$i"
 121                 fi
 122         done
 123
 124         if [ \( ! -r ${named_chrootdir}/etc/named.conf \) -a \
 125             \( -r ${named_chrootdir}/etc/namedb/named.conf \) ]; then
 126                 ln -s namedb/named.conf ${named_chrootdir}/etc
 127         fi
 128
 129         if [ -f /etc/localtime ]; then
 130                 cmp -s /etc/localtime "${named_chrootdir}/etc/localtime" || \
 131                     cp -p /etc/localtime "${named_chrootdir}/etc/localtime"
 132         fi
 133
 134         local piddir="$(dirname "${pidfile}")"
 135         mkdir -p "${named_chrootdir}${piddir}" "${piddir}"
 136         chmod 755 "${named_chrootdir}${piddir}" "${piddir}"
 137         chown named:named "${named_chrootdir}${piddir}" "${piddir}"
 138         ln -fs "${named_chrootdir}${pidfile}" "${pidfile}"
 139
 140         #       Change run_rc_commands()'s internal copy of $named_flags
 141         #
 142         rc_flags="-u named -t ${named_chrootdir} $rc_flags"
 143 }
 144
 145 load_rc_config $name
 146 run_rc_command "$1"