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dm-verity-img.bbclass: add DM_VERITY_SETUP_ARGS

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Useful to pass additional arguments to veritysetup, for example
'--no-superblock' to make system less vulnerable to certain types of
attacks and data maniputaion on the disk.

Signed-off-by: Grygorii Tertychnyi <grembeter@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
This commit is contained in:
gr embeter
2024-11-09 12:31:45 +01:00
committed by Armin Kuster
parent c9585ebfe8
commit 29d46054c2
1 changed files with 4 additions and 0 deletions
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classes/dm-verity-img.bbclass
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@@ -46,6 +46,9 @@ DM_VERITY_IMAGE_HASH_BLOCK_SIZE ?= "4096"
# Should we store the hash data on a separate device/partition? # Should we store the hash data on a separate device/partition?
DM_VERITY_SEPARATE_HASH ?= "0" DM_VERITY_SEPARATE_HASH ?= "0"
# Additional arguments for veritysetup
DM_VERITY_SETUP_ARGS ?= ""
# These are arch specific. We could probably intelligently auto-assign these? # These are arch specific. We could probably intelligently auto-assign these?
# Take x86-64 values as defaults. No impact on functionality currently. # Take x86-64 values as defaults. No impact on functionality currently.
# See SD_GPT_ROOT_X86_64 and SD_GPT_ROOT_X86_64_VERITY in the spec. # See SD_GPT_ROOT_X86_64 and SD_GPT_ROOT_X86_64_VERITY in the spec.
@@ -146,6 +149,7 @@ verity_setup() {
cp -a $INPUT $OUTPUT cp -a $INPUT $OUTPUT
SETUP_ARGS=" \ SETUP_ARGS=" \
${DM_VERITY_SETUP_ARGS} \
--data-block-size=${DM_VERITY_IMAGE_DATA_BLOCK_SIZE} \ --data-block-size=${DM_VERITY_IMAGE_DATA_BLOCK_SIZE} \
--hash-block-size=${DM_VERITY_IMAGE_HASH_BLOCK_SIZE} \ --hash-block-size=${DM_VERITY_IMAGE_HASH_BLOCK_SIZE} \
$HASH_OFFSET format $OUTPUT $OUTPUT_HASH \ $HASH_OFFSET format $OUTPUT $OUTPUT_HASH \