From e0fca90835169e21ffabe6f2e4b901678236d36e Mon Sep 17 00:00:00 2001 From: Christer Fletcher Date: Wed, 1 Sep 2021 16:18:01 +0200 Subject: dm-verity-img.bbclass: Expose --data-block-size for configuration 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 Signed-off-by: Paulo Neves Signed-off-by: Armin Kuster --- classes/dm-verity-img.bbclass | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'classes') diff --git a/classes/dm-verity-img.bbclass b/classes/dm-verity-img.bbclass index a0950da..0b6d053 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" -- cgit v1.2.3-54-g00ecf