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secure-boot: BAD_INFLUENCE image extended to 100 megabytes

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Signed-off-by: Mateusz Maciejewski <mateusz.maciejewski@3mdeb.com>
This commit is contained in:
Mateusz Maciejewski
2025-04-22 13:03:11 +02:00
parent 0ba10539f1
commit 4c86eb76bc
1 changed files with 6 additions and 6 deletions
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secure-boot/create_img.sh
+6 -6
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@@ -12,14 +12,14 @@ IMAGELABEL="BAD_INFLUE"
FILES_DIR="../hello-dasharo/dist"
IMAGE_FILE="sb_test_data.img"
# 34 megabytes is minimal image size to avoid mkfs.fat complaints on FAT32 creation
IMAGE_SIZE_MEGABYTES=34
IMAGE_SIZE_MEGABYTES=100
SECTOR_SIZE_BYTES=512
PARTTION_OFFSET_SECTORS=2048
PARTITION_OFFSET_SECTORS=2048
# do the math
IMAGE_SIZE_SECTORS=$((($IMAGE_SIZE_MEGABYTES*1024*1024)/$SECTOR_SIZE_BYTES))
OFFSET_BYTES=$(($PARTTION_OFFSET_SECTORS * $SECTOR_SIZE_BYTES))
echo Partition offset bytes: $OFFSET_BYTES
PARTITION_OFFSET_BYTES=$(($PARTITION_OFFSET_SECTORS * $SECTOR_SIZE_BYTES))
echo Partition offset bytes: $PARTITION_OFFSET_BYTES
# Step 1: Create blank image
echo "Creating blank image..."
@@ -28,10 +28,10 @@ dd if=/dev/zero of=$IMAGE_FILE bs=$SECTOR_SIZE_BYTES count=$IMAGE_SIZE_SECTORS >
error_check "Cannot create empty image file to store created certs and EFI files"
# Step2: Create partition table and partition entry
parted -s $IMAGE_FILE mklabel msdos mkpart primary fat32 $((PARTTION_OFFSET_SECTORS))s $(($IMAGE_SIZE_SECTORS-1))s
parted -s $IMAGE_FILE mklabel msdos mkpart primary fat32 $((PARTITION_OFFSET_SECTORS))s $(($IMAGE_SIZE_SECTORS-1))s
# Step 3: Attach loop device to created partition
LOOPDEV=$(sudo losetup --offset $OFFSET_BYTES --show --find $IMAGE_FILE)
LOOPDEV=$(sudo losetup --offset $PARTITION_OFFSET_BYTES --show --find $IMAGE_FILE)
echo $LOOPDEV
MOUNTDIR=$(mktemp -d)