Andrew Geissler | cc58928 | 2020-09-18 13:34:40 -0500 | [diff] [blame^] | 1 | #!/bin/sh |
| 2 | |
| 3 | dmverity_enabled() { |
| 4 | return 0 |
| 5 | } |
| 6 | |
| 7 | dmverity_run() { |
| 8 | DATA_SIZE="__not_set__" |
| 9 | ROOT_HASH="__not_set__" |
| 10 | |
| 11 | . /usr/share/misc/dm-verity.env |
| 12 | |
| 13 | case "${bootparam_root}" in |
| 14 | ID=*) |
| 15 | RDEV="$(realpath /dev/disk/by-id/${bootparam_root#ID=})" |
| 16 | ;; |
| 17 | LABEL=*) |
| 18 | RDEV="$(realpath /dev/disk/by-label/${bootparam_root#LABEL=})" |
| 19 | ;; |
| 20 | PARTLABEL=*) |
| 21 | RDEV="$(realpath /dev/disk/by-partlabel/${bootparam_root#PARTLABEL=})" |
| 22 | ;; |
| 23 | PARTUUID=*) |
| 24 | RDEV="$(realpath /dev/disk/by-partuuid/${bootparam_root#PARTUUID=})" |
| 25 | ;; |
| 26 | PATH=*) |
| 27 | RDEV="$(realpath /dev/disk/by-path/${bootparam_root#PATH=})" |
| 28 | ;; |
| 29 | UUID=*) |
| 30 | RDEV="$(realpath /dev/disk/by-uuid/${bootparam_root#UUID=})" |
| 31 | ;; |
| 32 | *) |
| 33 | RDEV="${bootparam_root}" |
| 34 | esac |
| 35 | |
| 36 | if ! [ -b "${RDEV}" ]; then |
| 37 | echo "Root device resolution failed" |
| 38 | exit 1 |
| 39 | fi |
| 40 | |
| 41 | veritysetup \ |
| 42 | --data-block-size=1024 \ |
| 43 | --hash-offset=${DATA_SIZE} \ |
| 44 | create rootfs \ |
| 45 | ${RDEV} \ |
| 46 | ${RDEV} \ |
| 47 | ${ROOT_HASH} |
| 48 | |
| 49 | mount \ |
| 50 | -o ro \ |
| 51 | /dev/mapper/rootfs \ |
| 52 | ${ROOTFS_DIR} || exit 2 |
| 53 | } |