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build_image: clean up emit_gpt_scripts a bit

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Looks like the func was copy & pasted, so delete the first one (which
doesn't get used).  Then expand on the existing func to also generate
a mount and an umount script.

BUG=None
TEST=ran build_image, then tested the mount/umount and unpack/pack scripts

Change-Id: I34a372c7b4858b8e9057a29b2eb58c38d547eadd
Reviewed-on: https://gerrit.chromium.org/gerrit/33929
Reviewed-by: Liam McLoughlin <lmcloughlin@chromium.org>
Tested-by: Liam McLoughlin <lmcloughlin@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
This commit is contained in:
Mike Frysinger 2012-09-24 17:15:21 -04:00 committed by Gerrit
parent 0915c1e100
commit b344800aa6
1 changed files with 38 additions and 55 deletions
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93
build_library/disk_layout_util.sh
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@ -16,45 +16,6 @@ get_disk_layout_path() {
done
}
emit_gpt_scripts() {
local image="$1"
local dir="$2"
local pack="${dir}/pack_partitions.sh"
local unpack="${dir}/unpack_partitions.sh"
cat >"$unpack" <<HEADER
#!/bin/bash -eu
HEADER
echo "# File automatically generated by $(basename $0)." >> "$unpack"
cat >>"${unpack}" <<HEADER
# Do not edit.
TARGET=\${1:-}
if [[ -z "\$TARGET" ]]; then
echo "Usage: \$0 DEVICE" 1>&2
exit 1
fi
set -x
HEADER
$GPT show "${image}" | sed -e 's/^/# /' >>"${unpack}"
cp "${unpack}" "${pack}"
$GPT show -q "${image}" |
while read start size part x; do
local file="part_${part}"
local target="\"\${TARGET}\""
local dd_args="bs=512 count=${size}"
echo "dd if=${target} of=${file} ${dd_args} skip=${start}" >>"${unpack}"
echo "dd if=${file} of=${target} ${dd_args} seek=${start} conv=notrunc" \
>>"${pack}"
done
chmod +x "${unpack}" "${pack}"
}
write_partition_script() {
local image_type=$1
local partition_script_path=$2
@ -139,32 +100,54 @@ emit_gpt_scripts() {
local pack="${dir}/pack_partitions.sh"
local unpack="${dir}/unpack_partitions.sh"
local mount="${dir}/mount_image.sh"
local umount="${dir}/umount_image.sh"
cat >"${unpack}" <<HEADER
local start size part x
cat >"${unpack}" <<EOF
#!/bin/bash -eu
# File automatically generated. Do not edit.
TARGET=\${1:-}
if [[ -z "\$TARGET" ]]; then
echo "Usage: \$0 DEVICE" 1>&2
if [[ -z \${TARGET} ]]; then
echo "Usage: \$0 <image>" 1>&2
echo "Example: \$0 chromiumos_image.bin" 1>&2
exit 1
fi
set -x
HEADER
$(${GPT} show "${image}" | sed -e 's/^/# /')
EOF
$GPT show "${image}" | sed -e 's/^/# /' >>"${unpack}"
cp "${unpack}" "${pack}"
for x in "${pack}" "${mount}" "${umount}"; do
cp "${unpack}" "${x}"
done
$GPT show -q "${image}" |
while read start size part x; do
local file="part_${part}"
local target="\"\$TARGET\""
local dd_args="bs=512 count=${size}"
echo "dd if=${target} of=${file} ${dd_args} skip=${start}" >>"${unpack}"
echo "dd if=${file} of=${target} ${dd_args} seek=${start} conv=notrunc" \
>>"${pack}"
done
while read start size part x; do
local file="part_${part}"
local dir="dir_${part}"
local target='"${TARGET}"'
local dd_args="bs=512 count=${size}"
local start_b=$(( start * 512 ))
local size_b=$(( size * 512 ))
echo "dd if=${target} of=${file} ${dd_args} skip=${start}" >>"${unpack}"
echo "dd if=${file} of=${target} ${dd_args} seek=${start} conv=notrunc" \
>>"${pack}"
if [[ ${size} -gt 1 ]]; then
cat <<-EOF >>"${mount}"
mkdir -p ${dir}
sudo mount -o loop,offset=${start_b},sizelimit=${size_b} ${target} ${dir} || \
rmdir ${dir}
EOF
cat <<-EOF >>"${umount}"
if [[ -d ${dir} ]]; then
sudo umount ${dir} || :
rmdir ${dir}
fi
EOF
fi
done < <(${GPT} show -q "${image}")
chmod +x "${unpack}" "${pack}"
chmod +x "${unpack}" "${pack}" "${mount}" "${umount}"
}
build_gpt() {