diff options
Diffstat (limited to 'meta-security/recipes-core/initrdscripts/initramfs-framework')
-rw-r--r-- | meta-security/recipes-core/initrdscripts/initramfs-framework/dmverity | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/meta-security/recipes-core/initrdscripts/initramfs-framework/dmverity b/meta-security/recipes-core/initrdscripts/initramfs-framework/dmverity new file mode 100644 index 000000000..888052ccd --- /dev/null +++ b/meta-security/recipes-core/initrdscripts/initramfs-framework/dmverity @@ -0,0 +1,63 @@ +#!/bin/sh + +dmverity_enabled() { + return 0 +} + +dmverity_run() { + DATA_SIZE="__not_set__" + ROOT_HASH="__not_set__" + + . /usr/share/misc/dm-verity.env + + C=0 + delay=${bootparam_rootdelay:-1} + timeout=${bootparam_roottimeout:-5} + RDEV="$(realpath /dev/disk/by-partuuid/${bootparam_root#PARTUUID=})" + 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=})" + ;; + 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 + debug "Sleeping for $delay second(s) to wait root to settle..." + sleep $delay + C=$(( $C + 1 )) + + done + + veritysetup \ + --data-block-size=1024 \ + --hash-offset=${DATA_SIZE} \ + create rootfs \ + ${RDEV} \ + ${RDEV} \ + ${ROOT_HASH} + + mount \ + -o ro \ + /dev/mapper/rootfs \ + ${ROOTFS_DIR} || exit 2 +} |