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test/py: Correct sizing of created disks

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At present the disks end up being 1MB shorter than they should be,
since dd truncates by default.

Move the code into a function and update it to avoid truncation.

This resolves various warnings when running sandbox tests, of the form:

   mmc_bread() MMC: block number 0x9801 exceeds max(0x9800)

caused by the FAT partition being scanning.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2025-03-15 14:25:49 +00:00 • committed by Tom Rini
parent b23f0a42c3
commit 0b9e517aaf
1 changed files with 14 additions and 3 deletions
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17
test/py/tests/test_ut.py
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@ -57,6 +57,17 @@ def setup_image(ubman, devnum, part_type, img_size=20, second_part=False,
stdin=spec.encode('utf-8'))
return fname, mnt
def copy_partition(ubman, fsfile, outname):
"""Copy a partition into a disk iamge
Args:
ubman (ConsoleBase): U-Boot fixture
fsfile (str): Name of partition file
outname (str): Name of full-disk file to update
"""
utils.run_and_log(ubman,
f'dd if={fsfile} of={outname} bs=1M seek=1 conv=notrunc')
def setup_bootmenu_image(ubman):
"""Create a 20MB disk image with a single ext4 partition
@ -172,7 +183,7 @@ booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
fsfile = 'ext18M.img'
utils.run_and_log(ubman, f'fallocate -l 18M {fsfile}')
utils.run_and_log(ubman, f'mkfs.ext4 {fsfile} -d {mnt}')
utils.run_and_log(ubman, f'dd if={fsfile} of={fname} bs=1M seek=1')
copy_partition(ubman, fsfile, fname)
utils.run_and_log(ubman, f'rm -rf {mnt}')
utils.run_and_log(ubman, f'rm -f {fsfile}')
@ -224,7 +235,7 @@ label Fedora-Workstation-armhfp-31-1.9 (5.3.7-301.fc31.armv7hl)
utils.run_and_log(ubman, f'fallocate -l 18M {fsfile}')
utils.run_and_log(ubman, f'mkfs.vfat {fsfile}')
utils.run_and_log(ubman, ['sh', '-c', f'mcopy -i {fsfile} {mnt}/* ::/'])
utils.run_and_log(ubman, f'dd if={fsfile} of={fname} bs=1M seek=1')
copy_partition(ubman, fsfile, fname)
utils.run_and_log(ubman, f'rm -rf {mnt}')
utils.run_and_log(ubman, f'rm -f {fsfile}')
@ -562,7 +573,7 @@ def setup_efi_image(ubman):
utils.run_and_log(ubman, f'fallocate -l 18M {fsfile}')
utils.run_and_log(ubman, f'mkfs.vfat {fsfile}')
utils.run_and_log(ubman, ['sh', '-c', f'mcopy -vs -i {fsfile} {mnt}/* ::/'])
utils.run_and_log(ubman, f'dd if={fsfile} of={fname} bs=1M seek=1')
copy_partition(ubman, fsfile, fname)
utils.run_and_log(ubman, f'rm -rf {mnt}')
utils.run_and_log(ubman, f'rm -f {fsfile}')