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#!/bin/sh
dmverity_enabled() {
return 0
}
dmverity_run() {
DATA_SIZE="__not_set__"
DATA_BLOCK_SIZE="__not_set__"
ROOT_HASH="__not_set__"
SEPARATE_HASH="__not_set__"
. /usr/share/misc/dm-verity.env
C=0
delay=${bootparam_rootdelay:-1}
timeout=${bootparam_roottimeout:-5}
# we know exactly what we are looking for; don't need the wide hunt below
if [ "${SEPARATE_HASH}" -eq "1" ]; then
while [ ! -b "/dev/disk/by-partuuid/${ROOT_UUID}" ]; do
if [ $(( $C * $delay )) -gt $timeout ]; then
fatal "Root device (data) resolution failed"
exit 1
fi
debug "Sleeping for $delay second(s) to wait for root data to settle..."
sleep $delay
C=$(( $C + 1 ))
done
veritysetup \
--data-block-size=${DATA_BLOCK_SIZE} \
create rootfs \
/dev/disk/by-partuuid/${ROOT_UUID} \
/dev/disk/by-partuuid/${RHASH_UUID} \
${ROOT_HASH}
mount \
-o ro \
/dev/mapper/rootfs \
${ROOTFS_DIR} || exit 2
return
fi
RDEV="$(realpath /dev/disk/by-partuuid/${bootparam_root#PARTUUID=} 2>/dev/null)"
while [ ! -b "${RDEV}" ]; do
if [ $(( $C * $delay )) -gt $timeout ]; then
fatal "Root device resolution failed"
exit 1
fi
case "${bootparam_root}" in
ID=*)
RDEV="$(realpath /dev/disk/by-id/${bootparam_root#ID=} 2>/dev/null)"
;;
LABEL=*)
RDEV="$(realpath /dev/disk/by-label/${bootparam_root#LABEL=} 2>/dev/null)"
;;
PARTLABEL=*)
RDEV="$(realpath /dev/disk/by-partlabel/${bootparam_root#PARTLABEL=} 2>/dev/null)"
;;
PARTUUID=*)
RDEV="$(realpath /dev/disk/by-partuuid/${bootparam_root#PARTUUID=} 2>/dev/null)"
;;
PATH=*)
RDEV="$(realpath /dev/disk/by-path/${bootparam_root#PATH=} 2>/dev/null)"
;;
UUID=*)
RDEV="$(realpath /dev/disk/by-uuid/${bootparam_root#UUID=} 2>/dev/null)"
;;
*)
RDEV="${bootparam_root}"
esac
debug "Sleeping for $delay second(s) to wait root to settle..."
sleep $delay
C=$(( $C + 1 ))
done
veritysetup \
--data-block-size=${DATA_BLOCK_SIZE} \
--hash-offset=${DATA_SIZE} \
create rootfs \
${RDEV} \
${RDEV} \
${ROOT_HASH}
mount \
-o ro \
/dev/mapper/rootfs \
${ROOTFS_DIR} || exit 2
}
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