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|
#!/bin/sh
# $Id$
#
# $FreeBSD$
#
# PROVIDE: ezjail
# REQUIRE: LOGIN cleanvar sshd
# BEFORE: securelevel
# KEYWORD: nojail shutdown
#
# Add the following lines to /etc/rc.conf.local or /etc/rc.conf to enable ezjail
#
#ezjail_enable="YES"
#
# Please do not change this file, configure in EZJAIL_PREFIX/etc/ezjail.conf
# ugly: this variable is set on port install time
ezjail_prefix=EZJAIL_PREFIX
. /etc/rc.subr
name=ezjail
rcvar=`set_rcvar`
extra_commands="startcrypto stopcrypto"
load_rc_config ${name}
ezjail_enable=${ezjail_enable:-"NO"}
restart_cmd="do_cmd restart _"
start_cmd="do_cmd start '_ ezjail'"
stop_cmd="do_cmd stop '_ ezjail'"
startcrypto_cmd="do_cmd startcrypto _"
stopcrypto_cmd="do_cmd stopcrypto _"
do_cmd()
{
action=$1; message=$2; shift 2;
unset ezjail_list ezjail_pass ezjail_mds ezjail_stop
ezjail_cfgs=${ezjail_prefix}/etc/ezjail/
ezjail_fromrc="YES"
case "${action}" in *stop) ezjail_stop="YES";; esac
# If a jail list is given on command line, process it
# If not, fetch it from our config directory
if [ "$*" ]; then
ezjail_list=`echo -n $* | tr -c '[:alnum:] ' '_'`
unset ezjail_fromrc
else
[ "${ezjail_stop}" ] && reverse_command="tail -r" || reverse_command="cat"
[ -d "${ezjail_cfgs}" ] && cd "${ezjail_cfgs}" && ezjail_list=`ls | xargs rcorder | ${reverse_command}`
echo -n "${message##_}"
fi
for ezjail in ${ezjail_list}; do
unset ezjail_config
[ -e "${ezjail_jailcfgs}/${ezjail}" ] && ezjail_config="${ezjail_jailcfgs}/${ezjail}"
[ -e "${ezjail_jailcfgs}/${ezjail}.norun" ] && ezjail_config="${ezjail_jailcfgs}/${ezjail}.norun"
# Check for jails config
[ -f "${ezjail_config}" ] || echo " Warning: Jail ${ezjail} not found." && continue
# If jail is temporary disabled (dot in name), skip it for starts
[ "${ezjail_stop}" ] && ezjail="${ezjail%%.*}"
[ "${ezjail%.*}" != "${ezjail}" ] && echo -n " skipping ${ezjail}" && continue
# Read config file
. ${ezjail_config}
eval ezjail_rootdir=\"\$jail_${ezjail}_rootdir\"
eval ezjail_image=\"\$jail_${ezjail}_image\"
eval ezjail_imagetype=\"\$jail_${ezjail}_imagetype\"
eval ezjail_attachparams=\"\$jail_${ezjail}_attachparams\"
eval ezjail_attachblocking=\"\$jail_${ezjail}_attachblocking\"
eval ezjail_forceblocking=\"\$jail_${ezjail}_forceblocking\"
eval ezjail_zfs_datasets=\"\$jail_${ezjail}_zfs_datasets\"
eval ezjail_cpuset=\"\$jail_${ezjail}_cpuset\"
# Do we still have a root to run in?
[ ! -d "${ezjail_rootdir}" ] && echo " Warning: root directory ${ezjail_rootdir} of ${ezjail} does not exist." && continue
[ "${ezjail_attachblocking}" -o "${ezjail_forceblocking}" ] && ezjail_blocking="YES" || unset ezjail_blocking
# Cannot auto mount blocking jails without interrupting boot process
[ "${ezjail_fromrc}" -a "${action}" = "start" -a "${ezjail_blocking}" ] && echo -n " ...skipping blocking jail ${ezjail}" && continue
# Explicitely do only run blocking crypto jails when *crypto is requested
[ "${action%crypto}" = "${action}" -o "${ezjail_blocking}" ] || continue
# Try to attach (crypto) devices
if [ "${ezjail_image}" ]; then
attach_detach_pre || continue
fi
ezjail_pass="${ezjail_pass} ${ezjail}"
done
# Pass control to jail script which does the actual work
[ "${ezjail_pass}" ] && sh /etc/rc.d/jail one${action%crypto} ${ezjail_pass}
if [ "${action}" = "start" ]; then
ezjail_safename=`echo -n "${ezjail}" | tr -c '[:alnum:]' _`
# Get the JID of the jail
[ -f "/var/run/jail_${ezjail_safename}.id" ] && ezjail_id=`cat /var/run/jail_${ezjail_safename}.id` || return
# Attach ZFS-datasets to the jail
for zfs in ${ezjail_zfs_datasets}; do
/sbin/zfs jail ${ezjail_id} ${zfs} || echo -n "Error: ${zfs} could not be configured"
done
# Configure processor sets for the jail via cpuset(1)
[ -z "${ezjail_cpuset}" ] || /usr/bin/cpuset -l ${ezjail_cpuset} -j ${ezjail_id} || echo -n "Error: The defined cpuset is malformed"
fi
# Can only detach after unmounting (from fstab.JAILNAME in /etc/rc.d/jail)
attach_detach_post
}
attach_detach_pre ()
{
case "${action%crypto}" in
start|restart)
# If jail is running, do not mount devices, this is the same check as
# /etc/rc.d/jail does
[ -e "/var/run/jail_${ezjail}.id" ] && return 0
if [ -L "${ezjail_rootdir}.device" ]; then
# Fetch destination of soft link
ezjail_device=`stat -f "%Y" ${ezjail_rootdir}.device`
mount -p -v | grep -E "^${ezjail_rootdir}.device.${ezjail_rootdir}" && echo "Warning: Skipping jail. Jail image file ${ezjail} already attached as ${ezjail_device}. 'ezjail-admin config -i detach' it first." && return 1
mount -p -v | grep -E "^${ezjail_device}.${ezjail_rootdir}" && echo "Warning: Skipping jail. Jail image file ${ezjail} already attached as ${ezjail_device}. 'ezjail-admin config -i detach' it first." && return 1
# Remove stale device link
rm -f "${ezjail_rootdir}.device"
fi
# Create a memory disc from jail image
ezjail_device=`mdconfig -a -t vnode -f ${ezjail_image}` || return 1
# If this is a crypto jail, try to mount it, remind user, which jail
# this is. In this case, the device to mount is
case ${ezjail_imagetype} in
crypto|bde)
echo "Attaching bde device for image jail ${ezjail}..."
echo gbde attach "/dev/${ezjail_device}" ${ezjail_attachparams} | /bin/sh
if [ $? -ne 0 ]; then
mdconfig -d -u "${ezjail_device}" > /dev/null
echo "Error: Attaching bde device failed."; return 1
fi
# Device to mount is not md anymore
ezjail_device="${ezjail_device}.bde"
;;
eli)
echo "Attaching eli device for image jail ${ezjail}..."
echo geli attach ${ezjail_attachparams} "/dev/${ezjail_device}" | /bin/sh
if [ $? -ne 0 ]; then
mdconfig -d -u "${ezjail_device}" > /dev/null
echo "Error: Attaching eli device failed."; return 1
fi
# Device to mount is not md anymore
ezjail_device="${ezjail_device}.eli"
;;
esac
# Clean image
fsck -t ufs -p -B "/dev/${ezjail_device}"
# relink image device
rm -f "${ezjail_rootdir}.device"
ln -s "/dev/${ezjail_device}" "${ezjail_rootdir}.device"
;;
stop)
# If jail is not running, do not unmount devices, this is the same check
# as /etc/rc.d/jail does
[ -e "/var/run/jail_${ezjail}.id" ] || return 1
# If soft link to device is not set, we cannot unmount
[ -e "${ezjail_rootdir}.device" ] || return
# Fetch destination of soft link
ezjail_device=`stat -f "%Y" "${ezjail_rootdir}.device"`
# Add this device to the list of devices to be unmounted
case ${ezjail_imagetype} in
crypto|bde) ezjail_mds="${ezjail_mds} ${ezjail_device%.bde}" ;;
eli) ezjail_mds="${ezjail_mds} ${ezjail_device%.eli}" ;;
simple) ezjail_mds="${ezjail_mds} ${ezjail_device}" ;;
esac
# Remove soft link (which acts as a lock)
rm -f "${ezjail_rootdir}.device"
;;
esac
}
attach_detach_post () {
# In case of a stop, unmount image devices after stopping jails
for md in ${ezjail_mds}; do
[ -e "${md}.bde" ] && gbde detach "${md}"
[ -e "${md}.eli" ] && geli detach "${md}"
mdconfig -d -u "${md#/dev/}"
done
}
run_rc_command $*
|
