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|
#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: named
# REQUIRE: SERVERS cleanvar
# KEYWORD: shutdown
. /etc/rc.subr
name="named"
rcvar=named_enable
command="/usr/sbin/named"
extra_commands="reload"
start_precmd="named_precmd"
start_postcmd="make_symlinks"
reload_cmd="named_reload"
stop_cmd="named_stop"
stop_postcmd="named_poststop"
# If running in a chroot cage, ensure that the appropriate files
# exist inside the cage, as well as helper symlinks into the cage
# from outside.
#
# As this is called after the is_running and required_dir checks
# are made in run_rc_command(), we can safely assume ${named_chrootdir}
# exists and named isn't running at this point (unless forcestart
# is used).
#
chroot_autoupdate()
{
local file
# Create (or update) the chroot directory structure
#
if [ -r /etc/mtree/BIND.chroot.dist ]; then
mtree -deU -f /etc/mtree/BIND.chroot.dist \
-p ${named_chrootdir}
else
warn "/etc/mtree/BIND.chroot.dist missing,"
warn "chroot directory structure not updated"
fi
# Create /etc/namedb symlink
#
if [ ! -L /etc/namedb ]; then
if [ -d /etc/namedb ]; then
warn "named chroot: /etc/namedb is a directory!"
elif [ -e /etc/namedb ]; then
warn "named chroot: /etc/namedb exists!"
else
ln -s ${named_chrootdir}/etc/namedb /etc/namedb
fi
else
# Make sure it points to the right place.
ln -shf ${named_chrootdir}/etc/namedb /etc/namedb
fi
# Mount a devfs in the chroot directory if needed
#
if [ `${SYSCTL_N} security.jail.jailed` -eq 0 ]; then
umount ${named_chrootdir}/dev 2>/dev/null
devfs_domount ${named_chrootdir}/dev devfsrules_hide_all
devfs -m ${named_chrootdir}/dev rule apply path null unhide
devfs -m ${named_chrootdir}/dev rule apply path random unhide
else
if [ -c ${named_chrootdir}/dev/null -a \
-c ${named_chrootdir}/dev/random ]; then
info "named chroot: using pre-mounted devfs."
else
err 1 "named chroot: devfs cannot be mounted from" \
"within a jail. Thus a chrooted named cannot" \
"be run from within a jail." \
"To run named without chrooting it, set" \
"named_chrootdir=\"\" in /etc/rc.conf."
fi
fi
# Copy and/or update key files to the chroot /etc
#
for file in localtime protocols services; do
if [ -r /etc/$file ]; then
cmp -s /etc/$file "${named_chrootdir}/etc/$file" ||
cp -p /etc/$file "${named_chrootdir}/etc/$file"
fi
done
}
# Make symlinks to the correct pid file
#
make_symlinks()
{
checkyesno named_symlink_enable &&
ln -fs "${named_chrootdir}${pidfile}" ${pidfile}
}
named_reload()
{
${command%/named}/rndc reload
}
named_stop()
{
# This duplicates an undesirably large amount of code from the stop
# routine in rc.subr in order to use rndc to shut down the process,
# and to give it a second chance in case rndc fails.
rc_pid=$(check_pidfile $pidfile $command)
if [ -z "$rc_pid" ]; then
[ -n "$rc_fast" ] && return 0
_run_rc_notrunning
return 1
fi
echo 'Stopping named.'
if ${command%/named}/rndc stop 2>/dev/null; then
wait_for_pids $rc_pid
else
echo -n 'rndc failed, trying kill: '
kill -TERM $rc_pid
wait_for_pids $rc_pid
fi
}
named_poststop()
{
if [ -n "${named_chrootdir}" -a -c ${named_chrootdir}/dev/null ]; then
if [ `${SYSCTL_N} security.jail.jailed` -eq 0 ]; then
umount ${named_chrootdir}/dev 2>/dev/null || true
else
warn "named chroot:" \
"cannot unmount devfs from inside jail!"
fi
fi
}
named_precmd()
{
# Is the user using a sandbox?
#
if [ -n "$named_chrootdir" ]; then
rc_flags="$rc_flags -t $named_chrootdir"
checkyesno named_chroot_autoupdate && chroot_autoupdate
else
named_symlink_enable=NO
fi
# Create an rndc.key file for the user if none exists
#
if [ -s "${named_chrootdir}/etc/namedb/rndc.conf" ]; then
return 0
fi
confgen_command="${command%/named}/rndc-confgen -a -b256 -u $named_uid \
-c ${named_chrootdir}/etc/namedb/rndc.key"
if [ -s "${named_chrootdir}/etc/namedb/rndc.key" ]; then
case `stat -f%Su ${named_chrootdir}/etc/namedb/rndc.key` in
root|$named_uid) ;;
*) $confgen_command ;;
esac
else
$confgen_command
fi
}
load_rc_config $name
# Updating the following variables requires that rc.conf be loaded first
#
required_dirs="$named_chrootdir" # if it is set, it must exist
pidfile="${named_pidfile:-/var/run/named/pid}"
command_args="-u ${named_uid:=root}"
run_rc_command "$1"
|
