From: Christer Fletcher <[email protected]> Add DM_VERITY_IMAGE_DATA_BLOCK_SIZE to be able to set the --data-block-size used in veritysetup. Tuning this value effects the performance and size of the resulting image.
Signed-off-by: Christer Fletcher <[email protected]> Signed-off-by: Paulo Neves <[email protected]> --- classes/dm-verity-img.bbclass | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/classes/dm-verity-img.bbclass b/classes/dm-verity-img.bbclass index 16d395b..b311fc5 100644 --- a/classes/dm-verity-img.bbclass +++ b/classes/dm-verity-img.bbclass @@ -22,6 +22,9 @@ # is stored where it can be installed into associated initramfs rootfs. STAGING_VERITY_DIR ?= "${TMPDIR}/work-shared/${MACHINE}/dm-verity" +# Define the data block size to use in veritysetup. +DM_VERITY_IMAGE_DATA_BLOCK_SIZE ?= "1024" + # Process the output from veritysetup and generate the corresponding .env # file. The output from veritysetup is not very machine-friendly so we need to # convert it to some better format. Let's drop the first line (doesn't contain @@ -57,7 +60,7 @@ verity_setup() { # Let's drop the first line of output (doesn't contain any useful info) # and feed the rest to another function. - veritysetup --data-block-size=1024 --hash-offset=$SIZE format $OUTPUT $OUTPUT | tail -n +2 | process_verity + veritysetup --data-block-size=${DM_VERITY_IMAGE_DATA_BLOCK_SIZE} --hash-offset=$SIZE format $OUTPUT $OUTPUT | tail -n +2 | process_verity } VERITY_TYPES = "ext2.verity ext3.verity ext4.verity btrfs.verity" -- 2.25.1
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