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ezjail now comes with image jails. HEADS UP! A lot of testing is ahead.

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This commit is contained in:
erdgeist 2006-03-21 16:33:05 +00:00
parent 761bf8e2e9
commit 6c388abea8
1 changed files with 98 additions and 20 deletions
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118
ezjail-admin
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@ -28,6 +28,16 @@ ezjail_fdescfs_enable=${ezjail_fdescfs_enable:-"YES"}
# define our bail out shortcut
exerr () { echo -e "$*"; exit 1; }
# define detach strategy for image jails
detach_images () {
# unmount and detach memory disc
if [ "${newjail_img_device}" ]; then
umount ${newjail_root}
[ "${newjail_image}" = "crypto" ] && gbde detach /dev/${newjail_img_device}
mdconfig -d -u ${newjail_img_device}
fi
}
# check for command
[ "$1" ] || exerr "Usage: `basename -- $0` [create|delete|list|update] {params}"
@ -35,11 +45,14 @@ case "$1" in
######################## ezjail-admin CREATE ########################
create)
shift
args=`getopt xf:r: $*` || exerr "Usage: `basename -- $0` create [-f flavour] [-r jailroot] [-x] jailname jailip"
args=`getopt f:r:s:xic $*` || exerr "Usage: `basename -- $0` create [-f flavour] [-r jailroot] [-s size] [-xic] jailname jailip"
newjail_root=
newjail_flavour=
newjail_softlink=
newjail_image=
newjail_imagesize=
newjail_device=
newjail_fill="YES"
set -- ${args}
@ -48,14 +61,20 @@ create)
-x) newjail_fill="NO"; shift;;
-r) newjail_root="$2"; shift 2;;
-f) newjail_flavour="$2"; shift 2;;
-i) newjail_image="simple"; shift;;
-s) newjail_imagesize="$2"; shift 2;;
-c) newjail_image="crypto"; shift;;
--) shift; break;;
esac
done
newjail_name=$1; newjail_ip=$2
newjail_name=$1; newjail_ip=$2
# we need at least a name and an ip for new jail
[ "${newjail_name}" -a "${newjail_ip}" -a $# = 2 ] || exerr "Usage: `basename -- $0` create [-f flavour] [-r jailroot] [-x] jailname jailip"
# check for sanity of settings concerning the image feature
[ "${newjail_image}" -a "$newjail_fill" = "YES" -a ! "${newjail_imagesize}" ] && exerr "Image jails need an image size."
# check, whether ezjail-update has been called. existence of
# ezjail_jailbase is our indicator
[ -d ${ezjail_jailbase} ] || exerr "Error: base jail does not exist. Please run 'ezjail-admin update' first."
@ -103,35 +122,87 @@ create)
# All sanity checks that may lead to errors are hopefully passed here
#
if [ "${newjail_image}" ]; then
# Strip trailing slashes from jail root, those would confuse image path
newjail_img=${newjail_root%/}; while [ "${newjail_img}" -a -z "${newjail_img%%*/}" ]; do newjail_img=${newjail_img%/}; done
[ -z "${newjail_img}" ] && exerr "Error: Could not determine image file name, something is wrong with the jail root: ${newjail_root}."
# Location of our image and crypto image lock file
newjail_lock=${newjail_img}.lock
newjail_img=${newjail_img}.img
# If NOT exist, create image
if [ "$newjail_fill" = "YES" ]; then
[ -e "${newjail_img}" ] && exerr "Error: a file exists at the location ${newjail_img}, preventing our own image file to be created."
[ "${newjail_image}" = "crypto" -a -e "${newjail_lock}" ] && exerr "Error: a file exists at the location ${newjail_lock}, preventing our own crypto image lock file to be created."
# Now create jail disc image
touch "${newjail_img}"
dd if=/dev/random of="${newjail_img}" bs="${newjail_imagesize}" count=1 || exerr "Error: Could not (or not fully) create the image file. You might want to check (and possibly remove) the file ${newjail_img}. The image size provided was ${newjail_imagesize}."
# And attach device
newjail_img_device=`mdconfig -a -t vnode -f ${newjail_img}`
if [ "${newjail_image}" = "crypto" ]; then
# Initialise crypto image
# XXX TODO: catch error and detach memory disc
echo "Initialising crypto device. Enter a new passphrase twice..."
gbde init /dev/${newjail_img_device} -L ${newjail_lock}
# XXX TODO: catch error and detach memory disc
echo "Attaching crypto device. Enter the passphrase..."
gbde attach /dev/${newjail_img_device} -l ${newjail_lock}
newjail_device=${newjail_img_device}.bde
else
newjail_device=${newjail_img_device}
fi
# Format memory image
newfs /dev/${newjail_device}
# Create mount point and mount
mkdir -p ${newjail_root}
mount /dev/${newjail_device} ${newjail_root}
else
[ -e ${newjail_root} -a ! -d ${newjail_root} ] && exerr "Error: Could not create mount point for your jail image. A file exists at its location. (For existing image jails, call this tool without the .img suffix when specifying jail root.)"
[ -d ${newjail_root} ] || mkdir -p ${newjail_root}
fi
fi
# now take a copy of our template jail
if [ "${newjail_fill}" = "YES" ]; then
mkdir -p ${newjail_root} && cd ${ezjail_jailtemplate} && \
find * | cpio -p -v ${newjail_root} > /dev/null
[ $? = 0 ] || exerr "Error: Could not copy template jail."
mkdir -p ${newjail_root} && cd ${ezjail_jailtemplate} && find * | cpio -p -v ${newjail_root} > /dev/null
[ $? = 0 ] || detach_images || exerr "Error: Could not copy template jail."
fi
# if a soft link is necessary, create it now
[ "${newjail_softlink}" ] && ln -s ${newjail_root} ${newjail_softlink}
[ "${newjail_softlink}" ] && ln -s ${newjail_root} ${newjail_softlink}
# if the automount feature is not disabled, this fstab entry for new jail
# will be obeyed
echo ${ezjail_jailbase} ${newjail_root}/basejail nullfs ro 0 0 > /etc/fstab.${newjail_nname}
echo -n > /etc/fstab.${newjail_nname}
[ "${newjail_image}" ] && \
echo ${newjail_root}.device ${newjail_root} ufs rw 0 0 >> /etc/fstab.${newjail_nname}
echo ${ezjail_jailbase} ${newjail_root}/basejail nullfs ro 0 0 >> /etc/fstab.${newjail_nname}
# now, where everything seems to have gone right, create control file in
# now, where everything seems to have gone right, create control file in
# ezjails config dir
mkdir -p ${ezjail_jailcfgs}
echo export jail_${newjail_nname}_hostname=\"${newjail_name}\" > ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_ip=\"${newjail_ip}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_rootdir=\"${newjail_root}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_exec=\"/bin/sh /etc/rc\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_mount_enable=\"${ezjail_mount_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_devfs_enable=\"${ezjail_devfs_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_devfs_ruleset=\"devfsrules_jail\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_procfs_enable=\"${ezjail_procfs_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_hostname=\"${newjail_name}\" > ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_ip=\"${newjail_ip}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_rootdir=\"${newjail_root}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_exec=\"/bin/sh /etc/rc\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_mount_enable=\"${ezjail_mount_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_devfs_enable=\"${ezjail_devfs_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_devfs_ruleset=\"devfsrules_jail\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_procfs_enable=\"${ezjail_procfs_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
echo export jail_${newjail_nname}_fdescfs_enable=\"${ezjail_fdescfs_enable}\" >> ${ezjail_jailcfgs}/${newjail_nname}
[ "${newjail_image}" ] && \
echo export jail_${newjail_nname}_image=\"${newjail_img}\" >> ${ezjail_jailcfgs}/${newjail_nname}
[ "${newjail_image}" = "crypto" ] && \
echo export jail_${newjail_nname}_cryptimage=\"YES\" >> ${ezjail_jailcfgs}/${newjail_nname}
# Final steps for flavour installation
if [ "${newjail_flavour}" ]; then
# Final steps for flavour installation
if [ "${newjail_fill}" = "YES" -a "${newjail_flavour}" ]; then
# install files and config to new jail
cd ${ezjail_flavours}/${newjail_flavour} && find * | cpio -p -v ${newjail_root} > /dev/null
[ $? = 0 ] || echo "Warning: Could not fully install flavour."
@ -144,6 +215,9 @@ create)
fi
fi
# Detach (crypto and) memory discs
detach_images
#
# For user convenience some scenarios commonly causing headaches are checked
#
@ -160,7 +234,7 @@ create)
newjail_listener=`sockstat -4 -l | grep \*:[[:digit:]]`
[ $? = 0 ] && echo -e "Warning: Some services already seem to be listening on all IP, (including ${newjail_ip})\n This may cause some confusion, here they are:\n${newjail_listener}"
IFS=${TIFS}
;;
######################## ezjail-admin DELETE ########################
delete)
@ -190,6 +264,7 @@ delete)
# fetch information about the jail to be gone by parsing our records
. ${ezjail_jailcfgs}/${oldjail_nname}
eval oldjail_rootdir=\"\$jail_${oldjail_nname}_rootdir\"
eval oldjail_image=\"\$jail_${oldjail_nname}_image\"
# if jail is still running, refuse to go any further
[ -f /var/run/jail_${oldjail_nname}.id ] && exerr "Error: Jail appears to be still running, stop it first.\n(/var/run/jail_${oldjail_nname}.id exists)."
@ -204,7 +279,10 @@ delete)
[ -L ${oldjail_softlink} ] && rm ${oldjail_softlink}
# if wiping the jail was requested, remove it
[ "${oldjail_wipe}" ] && rm -rf ${oldjail_rootdir}
if [ "${oldjail_wipe}" ]; then
[ "${oldjail_image}" ] && rm -f ${oldjail_image} ${oldjail_image%.img}.lock ${oldjail_image%.img}.device
rm -rf ${oldjail_rootdir}
fi
;;
######################## ezjail-admin LIST ########################