ืืกืืคืืจ ืืชืืื ืืคื ื ืืื ืจื, ืขืื ืืืฉืจ Centos 7 (RHEL 7) ืฉืืืจืจ. ืื ืืฉืชืืฉืช ืืืฆืคื ื ืืืื ื ืื ืขื Centos 6, ืื ืื ืืื ืืขืืืช ืขื ืืืืื ื ืขืืื ืืืืืืื ืฉื ืืื ื ืื ืืืฉืจ ืืืืจืช ืืื ื ืืืืง ืืกืื USB ืขื ืืืคืชืืืช ืืืจืืฉืื. ืขื ืืืช, ืืืฉืจ 7 ืฉืืืจืจ, ืคืชืืื ืืื ืื ืขืื ืืคื ืฉืืืืช ืจืืื. ืืืืจ ืืื ื ืืชื ืืื ืืืฆืื ืคืชืจืื ืืืืืจืช dracut ื-sysvinit ืืืืฆืขืืช ืฉืืจื ืคืฉืืื ืืชืฆืืจื: echo 'omit_dracutmodules+=" systemd "' > /etc/dracut.conf.d/luks-workaround.conf
ืื ืฉืืื ืฉืื ืืืืชื ื ืืช ืื ืืืืคื ืฉื-systemd - ืืฉืงื ืืืืจื ืืืงืืืื ืฉื ืฉืืจืืชื ืืขืจืืช, ืฉืืคืืืชื ืืฉืืขืืชืืช ืืช ืืื ืืืชืืื ืฉื ืืืขืจืืช.
ืืืืจืื ืขืืืื ืฉื:
ืืื ืืืืืช ืืคืชืจืื, ืืื ืชื ืืช ืื ืืขืฆืื, ืืขืืฉืื ืื ื ืืฉืชืฃ ืืืชื ืขื ืืฆืืืืจ ืืืขืื ืืื, ืืืฉื ืืงืจืื.
ืืืื
Systemd, ืืฉืืชืืืชื ืืขืืื ืขื Centos 7, ืื ืขืืจืจื ืฉืื ืจืืฉืืช, ืฉืื ืืืื ืฉืื ืื ืืื ืืจื ืืชืืืืจ ื ืืืื ืืฉืืจืืช, ืื ืืจืืฉืชื ืืจืื ืืืื ืืืชืืื. ืืืืจ ืืื, ืืืืชื ืืช systemd, ืืื ืืจืืฉื ืืจืืฉืื ื ืืื ืืขื ืืงืืืงื, ืืืืืื ืฉืืคืชืื dracut ืื ืืฉืงืืขื ืืื ืจื ืืชืืืื ืืชืืืื ืืืชืืื ืืืืฆืขืืช systemd ืืฉืืืื ืขื ืืฆืคื ืช ืืืกืง. ืืืืคื ืืืื ืื ืขืื, ืืื ืืื ืช ืกืืกืืช ืืืืกืง ืืื ืคืขื ืฉืืฉืจืช ืืืคืขื ืื ืื ืืืืจ ืืื ืืขื ืืื.
ืืืืจ ืฉื ืืกืืชื ืฉืื ืืืืฆืืช ืืืืืชื ืืช ืืืืจืื, ืืื ืชื ืฉืืืฆื ืืขืจืืช ืงืื ืคืืืืจืฆืื ืขื USB ืืคืฉืจืืช, ืืื ืจืง ืขื ืฉืืื ืืื ื ืฉื ืื ืืืกืง ืขื ืืคืชื ืืืืกืง USB, ืืืช ืืืกืง ื-USB ืขืฆืื ื ืืชื ืืฉืืื ืจืง ืขื ืืื UUID, LABEL ืื ืขืื. ืื ืื ืืื ืืืื ื ืื ืืชืืืง ืืช ืื ืืืืช, ืื ืืกืืคื ืฉื ืืืจ ืฆืืืชื ืืืืืช ืืืืืจ ืืืชื ื ืฉื ืืืขื 7 ืฉื ืื, ืืื ืชื ืฉืืฃ ืืื ืื ืขืืื ืืคืชืืจ ืืช ืืืขืื.
ืืขืืืช
ืืืืื, ืืืขื ืื ืืื ืืืื ืืืชืื ืชืืกืฃ ืืฉืื ื-dracut, ืืื ืืืจืื ืืื ืืขืืื ืืืจ ืื ืื ืื ืงื. ืืชืืจืจ ืฉืืืื ืืืืคื ืืืงืืื ืฉื ืืืคืขืื ืฉื systemd, ืื ืื ืื ืงื ืืืืื ืืช ืืงืื ืฉืื ืืืฉื ืืช ืืช ืืชืงืืืืช ืืืขืื ื. ืืชืืขืื ื-dracut ืื ืืกืืืจ ืืื. ืขื ืืืช, ืืืืจ ื ืืกืืืื ืืืืฉืืื, ืืฆืืืชื ืืคืชืืจ ืืช ืืืขืื.
ืืื ืื ืขืืื
ืืื ืืืืกืก ืขื ืฉืืืฉ ืืืืืืช:
- luks-auto-key.service - ืืืคืฉ ืืื ื ืื ืขื ืืคืชืืืช ืขืืืจ LUKS
- luks-auto.target - ืคืืขื ืืชืืืช ืขืืืจ ืืืืืืช systemd-cryptsetup ืืืื ืืช
- luks-auto-clean.service - ืื ืงื ืงืืฆืื ืืื ืืื ืฉื ืืฆืจื ืขื ืืื luks-auto-key.service
ื-luks-auto-generator.sh ืืื ืกืงืจืืคื ืฉืืืคืขื ืขื ืืื systemd ืืืืืฆืจ ืืืืืืช ืืืืืกืกืืช ืขื ืคืจืืืจื ืืืื. ืื ืจืืืจืื ืืืืื ื ืืฆืจืื ืขื ืืื ืืืืืืช fstab ืืื'.
luks-auto-generator.sh
ืืืืฆืขืืช drop-in.conf, ืืืชื ืืืืช ืฉื systemd-cryptsetup ืืกืื ืืจืืืช ืืฉืชื ื ืขื ืืื ืืืกืคืช luks-auto.target ืืชืืืช ืฉืืื.
luks-auto-key.service ื-luks-auto-key.sh
ืืืืื ืื ืืจืืฆื ืืช ืืกืงืจืืคื luks-auto-key.sh, ืืฉืจ, ืืืชืืกืก ืขื ืืคืชืืืช rd.luks.*, ืืืฆื ืืืื ืขื ืืืคืชืืืช ืืืขืชืืง ืืืชื ืืกืคืจืืื ืืื ืืช ืืฉืืืืฉ ื ืืกืฃ. ืืืืจ ืืฉืืืช ืืชืืืื, ืืืคืชืืืช ื ืืืงืื ืืืกืคืจืืื ืืืื ืืช ืขื ืืื luks-auto-clean.service.
ืืงืืจืืช:
/usr/lib/dracut/modules.d/99luks-auto/module-setup.sh
#!/bin/bash
check () {
if ! dracut_module_included "systemd"; then
"luks-auto needs systemd in the initramfs"
return 1
fi
return 255
}
depends () {
echo "systemd"
return 0
}
install () {
inst "$systemdutildir/systemd-cryptsetup"
inst_script "$moddir/luks-auto-generator.sh" "$systemdutildir/system-generators/luks-auto-generator.sh"
inst_script "$moddir/luks-auto-key.sh" "/etc/systemd/system/luks-auto-key.sh"
inst_script "$moddir/luks-auto.sh" "/etc/systemd/system/luks-auto.sh"
inst "$moddir/luks-auto.target" "${systemdsystemunitdir}/luks-auto.target"
inst "$moddir/luks-auto-key.service" "${systemdsystemunitdir}/luks-auto-key.service"
inst "$moddir/luks-auto-clean.service" "${systemdsystemunitdir}/luks-auto-clean.service"
ln_r "${systemdsystemunitdir}/luks-auto.target" "${systemdsystemunitdir}/initrd.target.wants/luks-auto.target"
ln_r "${systemdsystemunitdir}/luks-auto-key.service" "${systemdsystemunitdir}/initrd.target.wants/luks-auto-key.service"
ln_r "${systemdsystemunitdir}/luks-auto-clean.service" "${systemdsystemunitdir}/initrd.target.wants/luks-auto-clean.service"
}
/usr/lib/dracut/modules.d/99luks-auto/luks-auto-generator.sh
#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
. /lib/dracut-lib.sh
SYSTEMD_RUN='/run/systemd/system'
CRYPTSETUP='/usr/lib/systemd/systemd-cryptsetup'
TOUT=$(getargs rd.luks.key.tout)
if [ ! -z "$TOUT" ]; then
mkdir -p "${SYSTEMD_RUN}/luks-auto-key.service.d"
cat > "${SYSTEMD_RUN}/luks-auto-key.service.d/drop-in.conf" <<EOF
[Service]
Type=oneshot
ExecStartPre=/usr/bin/sleep $TOUT
EOF
fi
mkdir -p "$SYSTEMD_RUN/luks-auto.target.wants"
for argv in $(getargs rd.luks.uuid -d rd_LUKS_UUID); do
_UUID=${argv#luks-}
_UUID_ESC=$(systemd-escape -p $_UUID)
mkdir -p "${SYSTEMD_RUN}/systemd-cryptsetup@luksx2d${_UUID_ESC}.service.d"
cat > "${SYSTEMD_RUN}/systemd-cryptsetup@luksx2d${_UUID_ESC}.service.d/drop-in.conf" <<EOF
[Unit]
After=luks-auto.target
ConditionPathExists=!/dev/mapper/luks-${_UUID}
EOF
cat > "${SYSTEMD_RUN}/luks-auto@${_UUID_ESC}.service" <<EOF
[Unit]
Description=luks-auto Cryptography Setup for %I
DefaultDependencies=no
Conflicts=umount.target
IgnoreOnIsolate=true
Before=luks-auto.target
BindsTo=dev-disk-byx2duuid-${_UUID_ESC}.device
After=dev-disk-byx2duuid-${_UUID_ESC}.device luks-auto-key.service
Before=umount.target
[Service]
Type=oneshot
RemainAfterExit=yes
TimeoutSec=0
ExecStart=/etc/systemd/system/luks-auto.sh ${_UUID}
ExecStop=$CRYPTSETUP detach 'luks-${_UUID}'
Environment=DRACUT_SYSTEMD=1
StandardInput=null
StandardOutput=syslog
StandardError=syslog+console
EOF
ln -fs ${SYSTEMD_RUN}/luks-auto@${_UUID_ESC}.service $SYSTEMD_RUN/luks-auto.target.wants/luks-auto@${_UUID_ESC}.service
done
/usr/lib/dracut/modules.d/99luks-auto/luks-auto-key.service
[Unit]
Description=LUKS AUTO key searcher
After=cryptsetup-pre.target
Before=luks-auto.target
DefaultDependencies=no
[Service]
Environment=DRACUT_SYSTEMD=1
Type=oneshot
ExecStartPre=/usr/bin/sleep 1
ExecStart=/etc/systemd/system/luks-auto-key.sh
RemainAfterExit=true
StandardInput=null
StandardOutput=syslog
StandardError=syslog+console
/usr/lib/dracut/modules.d/99luks-auto/luks-auto-key.sh
#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
export DRACUT_SYSTEMD=1
. /lib/dracut-lib.sh
MNT_B="/tmp/luks-auto"
ARG=$(getargs rd.luks.key)
IFS=$':' _t=(${ARG})
KEY=${_t[0]}
F_FIELD=''
F_VALUE=''
if [ ! -z $KEY ] && [ ! -z ${_t[1]} ];then
IFS=$'=' _t=(${_t[1]})
F_FIELD=${_t[0]}
F_VALUE=${_t[1]}
F_VALUE="${F_VALUE%"}"
F_VALUE="${F_VALUE#"}"
fi
mkdir -p $MNT_B
finding_luks_keys(){
local _DEVNAME=''
local _UUID=''
local _TYPE=''
local _LABEL=''
local _MNT=''
local _KEY="$1"
local _F_FIELD="$2"
local _F_VALUE="$3"
local _RET=0
blkid -s TYPE -s UUID -s LABEL -u filesystem | grep -v -E -e "TYPE=".*_member"" -e "TYPE="crypto_.*"" -e "TYPE="swap"" | while IFS=$'' read -r _line; do
IFS=$':' _t=($_line);
_DEVNAME=${_t[0]}
_UUID=''
_TYPE=''
_LABEL=''
_MNT=''
IFS=$' ' _t=(${_t[1]});
for _a in "${_t[@]}"; do
IFS=$'=' _v=(${_a});
temp="${_v[1]%"}"
temp="${temp#"}"
case ${_v[0]} in
'UUID')
_UUID=$temp
;;
'TYPE')
_TYPE=$temp
;;
'LABEL')
_LABEL=$temp
;;
esac
done
if [ ! -z "$_F_FIELD" ];then
case $_F_FIELD in
'UUID')
[ ! -z "$_F_VALUE" ] && [ "$_UUID" != "$_F_VALUE" ] && continue
;;
'LABEL')
[ ! -z "$_F_VALUE" ] && [ "$_LABEL" != "$_F_VALUE" ] && continue
;;
*)
[ "$_DEVNAME" != "$_F_FIELD" ] && continue
;;
esac
fi
_MNT=$(findmnt -n -o TARGET $_DEVNAME)
if [ -z "$_MNT" ]; then
_MNT=${MNT_B}/KEY-${_UUID}
mkdir -p "$_MNT" && mount -o ro "$_DEVNAME" "$_MNT"
_RET=$?
else
_RET=0
fi
if [ "${_RET}" -eq 0 ] && [ -f "${_MNT}/${_KEY}" ]; then
cp "${_MNT}/${_KEY}" "$MNT_B/${_UUID}.key"
info "Found ${_MNT}/${_KEY} on ${_UUID}"
fi
if [[ "${_MNT}" =~ "${MNT_B}" ]]; then
umount "$_MNT" && rm -rfd --one-file-system "$_MNT"
fi
done
return 0
}
finding_luks_keys $KEY $F_FIELD $F_VALUE
/usr/lib/dracut/modules.d/99luks-auto/luks-auto.target
[Unit]
Description=LUKS AUTO target
After=systemd-readahead-collect.service systemd-readahead-replay.service
After=cryptsetup-pre.target luks-auto-key.service
Before=cryptsetup.target
/usr/lib/dracut/modules.d/99luks-auto/luks-auto.sh
#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
export DRACUT_SYSTEMD=1
. /lib/dracut-lib.sh
MNT_B="/tmp/luks-auto"
CRYPTSETUP='/usr/lib/systemd/systemd-cryptsetup'
for i in $(ls -p $MNT_B | grep -v /);do
info "Trying $i on $1..."
$CRYPTSETUP attach "luks-$1" "/dev/disk/by-uuid/$1" $MNT_B/$i 'tries=1'
if [ "$?" -eq "0" ]; then
info "Found $i for $1"
exit 0
fi
done
warn "No key found for $1. Fallback to passphrase mode."
/usr/lib/dracut/modules.d/99luks-auto/luks-auto-clean.service
[Unit]
Description=LUKS AUTO key cleaner
After=cryptsetup.target
DefaultDependencies=no
[Service]
Type=oneshot
ExecStart=/usr/bin/rm -rfd --one-file-system /tmp/luks-auto
/etc/dracut.conf.d/luks-auto.conf
add_dracutmodules+=" luks-auto "
ืืชืงื ื
mkdir -p /usr/lib/dracut/modules.d/99luks-auto/
# ัะฐะทะผะตัะฐะตะผ ััั ะฟะพััะธ ะฒัะต ัะฐะนะปั
chmod +x /usr/lib/dracut/modules.d/99luks-auto/*.sh
# ัะพะทะดะฐะตะผ ัะฐะนะป /etc/dracut.conf.d/luks-auto.conf
# ะ ะณะตะฝะตัะธััะตะผ ะฝะพะฒัะน initramfs
dracut -f
ืืกืงื ื
ืืืขืื ื ืืืืช, ืฉืืจืชื ืขื ืชืืืืืช ืขื ืืคืฉืจืืืืช ืฉืืจืช ืืคืงืืื ืฉื ืืงืจื ื ืืื ืืืฆื sysvinit, ืื ืฉืืงื ืขื ืืฉืืืืฉ ืืืชืงื ืืช ืืฉื ืืช ืืืชืจ.
ืืงืืจ: www.habr.com