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#!/bin/sh
dmverity_enabled() {
return 0
}
dmverity_run() {
DATA_SIZE="__not_set__"
ROOT_HASH="__not_set__"
. /usr/share/misc/dm-verity.env
case "${bootparam_root}" in
ID=*)
RDEV="$(realpath /dev/disk/by-id/${bootparam_root#ID=})"
;;
LABEL=*)
RDEV="$(realpath /dev/disk/by-label/${bootparam_root#LABEL=})"
;;
PARTLABEL=*)
RDEV="$(realpath /dev/disk/by-partlabel/${bootparam_root#PARTLABEL=})"
;;
PARTUUID=*)
RDEV="$(realpath /dev/disk/by-partuuid/${bootparam_root#PARTUUID=})"
;;
PATH=*)
RDEV="$(realpath /dev/disk/by-path/${bootparam_root#PATH=})"
;;
UUID=*)
RDEV="$(realpath /dev/disk/by-uuid/${bootparam_root#UUID=})"
;;
*)
RDEV="${bootparam_root}"
esac
if ! [ -b "${RDEV}" ]; then
echo "Root device resolution failed"
exit 1
fi
veritysetup \
--data-block-size=1024 \
--hash-offset=${DATA_SIZE} \
create rootfs \
${RDEV} \
${RDEV} \
${ROOT_HASH}
mount \
-o ro \
/dev/mapper/rootfs \
${ROOTFS_DIR} || exit 2
}
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