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#!/bin/sh -eu
show_error() {
if [ -n "${JOURNAL_STREAM-}" ]; then
echo "$@" | systemd-cat -t first-boot-set-hostname -p emerg
else
echo "$@" >&2
fi
}
sync_hostname() {
MAPPER_IFACE='xyz.openbmc_project.ObjectMapper'
MAPPER_PATH='/xyz/openbmc_project/object_mapper'
INVENTORY_PATH='/xyz/openbmc_project/inventory'
BMC_ITEM_IFACE='xyz.openbmc_project.Inventory.Item.Bmc'
BMC_ITEM_PATH=$(busctl --no-pager --verbose call \
${MAPPER_IFACE} \
${MAPPER_PATH} \
${MAPPER_IFACE} \
GetSubTree sias \
${INVENTORY_PATH} 0 1 ${BMC_ITEM_IFACE} \
2>/dev/null | grep ${INVENTORY_PATH} || true)
# ' STRING "/xyz/openbmc_project/inventory/system/chassis/bmc";'
BMC_ITEM_PATH=${BMC_ITEM_PATH#*\"}
BMC_ITEM_PATH=${BMC_ITEM_PATH%\"*}
BMC_ITEM_SERVICE=$(mapper get-service \
${BMC_ITEM_PATH} 2>/dev/null || true)
if [[ -z "${BMC_ITEM_SERVICE}" ]]; then
show_error "No BMC item found in the Inventory. Is VPD EEPROM empty?"
return
fi
BMC_SN=$(busctl get-property ${BMC_ITEM_SERVICE} \
${BMC_ITEM_PATH} \
${BMC_ITEM_IFACE} SerialNumber)
# 's "002B0DH1000"'
BMC_SN=${BMC_SN#*\"}
BMC_SN=${BMC_SN%\"*}
hostnamectl set-hostname {MACHINE}-${BMC_SN}
}
[ "$(hostname)" = "{MACHINE}" ] && sync_hostname
systemctl disable first-boot-set-hostname.service
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