[Pkg-cryptsetup-devel] Bug#358452: Probing for LUKS rather than partition type detection.

[Drake Diedrich]

   I was about to file a similar wishlist and found that there was already a
well-evolved set of scripts in this one.  Rather than rely on partition
types (luks is a partition type?), I had my init-premount script use
cryptsetup and an encrypted= cmdline, as follows:

export ENCRYPTED=
for x in $(cat /proc/cmdline); do
        case $x in
        encrypted=*)
                ENCRYPTED=${x#encrypted=}
                if cryptsetup isLuks ${ENCRYPTED}
                then
                        cryptsetup luksOpen ${ENCRYPTED}
${ROOT#/dev/mapper/}
                fi
                ;;
        esac
done
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