* [meta-security][PATCH] dm-verity-img.bbclass: Expose --data-block-size for configuration
@ 2021-09-01 14:18 Paulo Neves
2021-09-06 22:53 ` [yocto] " Armin Kuster
0 siblings, 1 reply; 2+ messages in thread
From: Paulo Neves @ 2021-09-01 14:18 UTC (permalink / raw)
To: yocto; +Cc: Christer Fletcher, Paulo Neves
From: Christer Fletcher <christer.fletcher@inter.ikea.com>
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 <christer.fletcher@inter.ikea.com>
Signed-off-by: Paulo Neves <paulo.neves1@inter.ikea.com>
---
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 $OUTPUT | tail -n +2 | process_verity
}
VERITY_TYPES = "ext2.verity ext3.verity ext4.verity btrfs.verity"
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [yocto] [meta-security][PATCH] dm-verity-img.bbclass: Expose --data-block-size for configuration
2021-09-01 14:18 [meta-security][PATCH] dm-verity-img.bbclass: Expose --data-block-size for configuration Paulo Neves
@ 2021-09-06 22:53 ` Armin Kuster
0 siblings, 0 replies; 2+ messages in thread
From: Armin Kuster @ 2021-09-06 22:53 UTC (permalink / raw)
To: Paulo Neves, yocto; +Cc: Christer Fletcher, Paulo Neves
merged.
thanks
Armin
On 9/1/21 7:18 AM, Paulo Neves wrote:
> From: Christer Fletcher <christer.fletcher@inter.ikea.com>
>
> Add DM_VERITY_IMAGE_DATA_BLOCK_SIZE to be able to set the
> --data-block-size used in veritysetup. Tuning this value effects the
> performance and size of the resulting image.
>
> Signed-off-by: Christer Fletcher <christer.fletcher@inter.ikea.com>
> Signed-off-by: Paulo Neves <paulo.neves1@inter.ikea.com>
> ---
> classes/dm-verity-img.bbclass | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/classes/dm-verity-img.bbclass b/classes/dm-verity-img.bbclass
> index 16d395b..b311fc5 100644
> --- a/classes/dm-verity-img.bbclass
> +++ b/classes/dm-verity-img.bbclass
> @@ -22,6 +22,9 @@
> # is stored where it can be installed into associated initramfs rootfs.
> STAGING_VERITY_DIR ?= "${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"
>
>
>
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2021-09-01 14:18 [meta-security][PATCH] dm-verity-img.bbclass: Expose --data-block-size for configuration Paulo Neves
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