milis/bin/dracut/parse-dmsquash-live.sh

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2016-02-24 01:27:23 +01:00
#!/bin/sh
# live images are specified with
# root=live:backingdev
[ -z "$root" ] && root=$(getarg root=)
# support legacy syntax of passing liveimg and then just the base root
if getargbool 0 rd.live.image -d -y liveimg; then
liveroot="live:$root"
fi
if [ "${root%%:*}" = "live" ] ; then
liveroot=$root
fi
[ "${liveroot%%:*}" = "live" ] || return 1
modprobe -q loop
case "$liveroot" in
live:LABEL=*|LABEL=*) \
root="${root#live:}"
root="$(echo $root | sed 's,/,\\x2f,g')"
root="live:/dev/disk/by-label/${root#LABEL=}"
rootok=1 ;;
live:CDLABEL=*|CDLABEL=*) \
root="${root#live:}"
root="$(echo $root | sed 's,/,\\x2f,g')"
root="live:/dev/disk/by-label/${root#CDLABEL=}"
rootok=1 ;;
live:UUID=*|UUID=*) \
root="${root#live:}"
root="live:/dev/disk/by-uuid/${root#UUID=}"
rootok=1 ;;
live:PARTUUID=*|PARTUUID=*) \
root="${root#live:}"
root="live:/dev/disk/by-partuuid/${root#PARTUUID=}"
rootok=1 ;;
live:PARTLABEL=*|PARTLABEL=*) \
root="${root#live:}"
root="live:/dev/disk/by-partlabel/${root#PARTLABEL=}"
rootok=1 ;;
live:/*.[Ii][Ss][Oo]|/*.[Ii][Ss][Oo])
root="${root#live:}"
root="liveiso:${root}"
rootok=1 ;;
live:/dev/*)
rootok=1 ;;
live:/*.[Ii][Mm][Gg]|/*.[Ii][Mm][Gg])
[ -f "${root#live:}" ] && rootok=1 ;;
esac
[ "$rootok" = "1" ] || return 1
info "root was $liveroot, is now $root"
# make sure that init doesn't complain
[ -z "$root" ] && root="live"
wait_for_dev -n /dev/mapper/live-rw
return 0