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image_to_usb: Add flag to choose disk by product.

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This adds a --to_product flag which chooses the destination
disk with a product value matching the specified pattern.
For the case where a developer is regularly writing to an
external USB drive, the product name may be more stable than
the raw device name.

Also added a help string for the --to flag. This was
accidentally deleted during some refactoring in 2010.

Tested with local cbuildbot internal pfq and manually:
  ./image_to_usb.sh
  ./image_to_usb.sh --to=/dev/sde
  ./image_to_usb.sh --to_product=\*Memory
  ./image_to_usb.sh --to_product=\*  # errors on multiple

BUG=chromium-os:22674
TEST=None

Change-Id: Ie7137e8c605217a3202c46d75896170fc6b7c4a5
Reviewed-on: https://gerrit.chromium.org/gerrit/11322
Reviewed-by: Chris Sosa <sosa@chromium.org>
Tested-by: Chris Wolfe <cwolfe@chromium.org>
Commit-Ready: Chris Wolfe <cwolfe@chromium.org>
This commit is contained in:
Chris Wolfe 2011-11-08 10:28:19 -05:00 committed by Gerrit
parent 19daeedb14
commit e87403d8f8
1 changed files with 31 additions and 2 deletions
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33
image_to_usb.sh
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@ -44,7 +44,9 @@ get_default_board
DEFINE_string board "${DEFAULT_BOARD}" "Board for which the image was built"
DEFINE_string from "" \
"Directory containing ${CHROMEOS_IMAGE_NAME}, or filename"
DEFINE_string to "/dev/sdX" "${DEFAULT_TO_HELP}"
DEFINE_string to "/dev/sdX" "Write to a specific disk or image file."
DEFINE_string to_product "" \
"Write to a disk with product name matching a pattern."
DEFINE_boolean yes ${FLAGS_FALSE} "Answer yes to all prompts" "y"
DEFINE_boolean force_copy ${FLAGS_FALSE} "Always rebuild test image"
DEFINE_boolean force_non_usb ${FLAGS_FALSE} \
@ -122,8 +124,35 @@ if [ ! -d "${FLAGS_from}" ] ; then
exit 1
fi
if [ -n "${FLAGS_to_product}" ]; then
if [ "${FLAGS_to}" != "/dev/sdX" ]; then
echo "Cannot specify both --to and --to_product"
exit 1
fi
match=""
for disk in $(list_usb_disks) $(list_mmc_disks); do
if [[ "$(get_disk_info $disk product)" = ${FLAGS_to_product} ]]; then
if [ -n "${match}" ]; then
echo "Found multiple devices matching product" \
"'${FLAGS_to_product}'; aborting."
exit 1
fi
match="$disk"
fi
done
if [ -z "${match}" ]; then
echo "Failed to find a devices matching product '${FLAGS_to_product}'"
# Leave FLAGS_to set to its default and fall through to the error report.
else
FLAGS_to="/dev/${match}"
fi
fi
if [ "${FLAGS_to}" == "/dev/sdX" ]; then
echo "You must specify a file or device to write to using --to."
echo "You must specify a file or device to write to using one of" \
"--to or --to_product."
disks="$(list_usb_disks) $(list_mmc_disks)"
if [ -n "$disks" ]; then
echo "Available USB & MMC disks:"