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[PATCH 1/5] mount_gpt_image: mount the esp image

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Adds support for mounting the esp image.
In the future, all legacy boot loaders will live on
the ESP partition (#12) to avoid modifying the rootfs
partition with bootloader changes in the configuration or
preamble.  This is needed.

TEST=manually reran mount_gpt_image.sh users.
BUG=chromium-os:327

Review URL: http://codereview.chromium.org/2811042
This commit is contained in:
Will Drewry 2010-07-02 16:15:22 -05:00
parent f5a61e900c
commit 61f39fb266
1 changed files with 13 additions and 0 deletions
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13
mount_gpt_image.sh
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@ -27,6 +27,8 @@ DEFINE_string image "chromiumos_image.bin"\
DEFINE_string "rootfs_mountpt" "/tmp/m" "Mount point for rootfs" "r"
DEFINE_string "stateful_mountpt" "/tmp/s" \
"Mount point for stateful partition" "s"
DEFINE_string "esp_mountpt" "" \
"Mount point for esp partition" "e"
DEFINE_boolean most_recent ${FLAGS_FALSE} "Use the most recent image dir" m
# Parse flags
@ -48,6 +50,7 @@ function unmount_image() {
fix_broken_symlinks "${FLAGS_rootfs_mountpt}"
sudo umount "${FLAGS_rootfs_mountpt}/usr/local"
sudo umount "${FLAGS_rootfs_mountpt}/var"
test -n "${FLAGS_esp_mountpt}" && sudo umount -d "${FLAGS_esp_mountpt}"
sudo umount -d "${FLAGS_stateful_mountpt}"
sudo umount -d "${FLAGS_rootfs_mountpt}"
set -e
@ -56,6 +59,8 @@ function unmount_image() {
function get_usb_partitions() {
sudo mount "${FLAGS_from}3" "${FLAGS_rootfs_mountpt}"
sudo mount "${FLAGS_from}1" "${FLAGS_stateful_mountpt}"
test -n "${FLAGS_esp_mountpt}" && \
sudo mount "${FLAGS_from}12" "${FLAGS_esp_mountpt}"
}
function get_gpt_partitions() {
@ -70,12 +75,20 @@ function get_gpt_partitions() {
offset=$(partoffset "${FLAGS_from}/${filename}" 1)
sudo mount -o loop,offset=$(( offset * 512 )) "${FLAGS_from}/${filename}" \
"${FLAGS_stateful_mountpt}"
# Mount the stateful partition using a loopback device.
if [[ -n "${FLAGS_esp_mountpt}" ]]; then
offset=$(partoffset "${FLAGS_from}/${filename}" 12)
sudo mount -o loop,offset=$(( offset * 512 )) "${FLAGS_from}/${filename}" \
"${FLAGS_esp_mountpt}"
fi
}
# Mount a gpt based image.
function mount_image() {
mkdir -p "${FLAGS_rootfs_mountpt}"
mkdir -p "${FLAGS_stateful_mountpt}"
mkdir -p "${FLAGS_esp_mountpt}"
# Get the partitions for the image / device.
if [ -b ${FLAGS_from} ] ; then