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Adds support to boot from a ISO image accessible over HTTP #46

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5 changes: 5 additions & 0 deletions defaults/initrd.defaults
Original file line number Diff line number Diff line change
Expand Up @@ -158,3 +158,8 @@ HWOPTS="keymap cache modules virtio hyperv ${HWOPTS_BLK} bcache lvm dmraid multi
# This is the set of default HWOPTS, in the order that they are loaded.
# This is whitespace aligned with HWOPTS above.
MY_HWOPTS=" modules virtio hyperv ${HWOPTS_BLK} lvm dmraid mdadm fs crypto"

# Defaults for HTTPBOOT option to allow mounting the iso locally
ISO_PATH="/iso"
ISO_NAME="/gentoo.iso"
ISO_TEMP="${ISO_PATH}/temp"
13 changes: 13 additions & 0 deletions defaults/linuxrc
Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,10 @@ do
cdroot_marker=*)
CDROOT_MARKER=${x#*=}
;;
httpboot=*)
HTTPBOOT=1
HTTPBOOT_URL=${x#*=}
;;
# Start livecd loop, looptype options
loop=*)
LOOP=${x#*=}
Expand Down Expand Up @@ -732,6 +736,15 @@ then
# Setup the root filesystem
bootstrapFS

if [ "${HTTPBOOT}" = '1' ]; then
[ ! -d "${ISO_TEMP}" ] && mkdir -p "${ISO_TEMP}"
good_msg "Fetching ISO from ${HTTPBOOT_URL}"
run wget "${HTTPBOOT_URL}" -O "${ISO_PATH}${ISO_NAME}" -q && good_msg "Written to ${ISO_PATH}${ISO_NAME}"
good_msg "Mounting ${ISO_PATH}${ISO_NAME} in ${CDROOT_PATH}"
run mount -o ro,loop "${ISO_PATH}${ISO_NAME}" "${CDROOT_PATH}" && good_msg "Mounted ${ISO_PATH}${ISO_NAME} in ${CDROOT_PATH}"
got_good_root=1
fi

if [ "${aufs}" = '1' ]
then
setup_aufs
Expand Down