xref: /openbmc/phosphor-misc/firstboot/first-boot-set-hostname.sh (revision 403e26351c06783fac9de012167d408a89d333ee) 
1#!/bin/sh -eu
2
3show_error() {
4    if [ -n "${JOURNAL_STREAM-}" ]; then
5        echo "$@" | systemd-cat -t first-boot-set-hostname -p emerg
6    else
7        echo "$@" >&2
8    fi
9}
10
11sync_hostname() {
12    MAPPER_IFACE='xyz.openbmc_project.ObjectMapper'
13    MAPPER_PATH='/xyz/openbmc_project/object_mapper'
14    INVENTORY_PATH='/xyz/openbmc_project/inventory'
15
16    BMC_ITEM_IFACE='xyz.openbmc_project.Inventory.Item.Bmc'
17    INV_ASSET_IFACE='xyz.openbmc_project.Inventory.Decorator.Asset'
18    BMC_SN=''
19    BMC_ITEM_PATH=$(busctl --no-pager --verbose call \
20                            ${MAPPER_IFACE} \
21                            ${MAPPER_PATH} \
22                            ${MAPPER_IFACE} \
23                            GetSubTree sias \
24                            ${INVENTORY_PATH} 0 1 ${BMC_ITEM_IFACE} \
25                        2>/dev/null | grep ${INVENTORY_PATH} || true)
26
27    # '     STRING "/xyz/openbmc_project/inventory/system/chassis/bmc";'
28    BMC_ITEM_PATH=${BMC_ITEM_PATH#*\"}
29    BMC_ITEM_PATH=${BMC_ITEM_PATH%\"*}
30
31    BMC_ITEM_SERVICE=$(mapper get-service \
32                                ${BMC_ITEM_PATH} 2>/dev/null || true)
33
34    if [[ -n "${BMC_ITEM_SERVICE}" ]]; then
35        BMC_SN=$(busctl get-property ${BMC_ITEM_SERVICE} \
36                            ${BMC_ITEM_PATH} \
37                            ${INV_ASSET_IFACE} SerialNumber)
38        # 's "002B0DH1000"'
39        BMC_SN=${BMC_SN#*\"}
40        BMC_SN=${BMC_SN%\"*}
41    else
42        show_error "No BMC item found in the Inventory. Is VPD EEPROM empty?"
43    fi
44
45    if [[ -z "${BMC_SN}" ]] ; then
46        show_error "BMC Serial Number empty! Setting Hostname as 'hostname + mac address' "
47
48        NETWORK_ITEM_IFACE='xyz.openbmc_project.Inventory.Item.NetworkInterface'
49        NETWORK_ITEM_PATH=$(busctl --no-pager --verbose call \
50                           ${MAPPER_IFACE} \
51                           ${MAPPER_PATH} \
52                           ${MAPPER_IFACE} \
53                           GetSubTree sias \
54                                ${INVENTORY_PATH} 0 1 ${NETWORK_ITEM_IFACE} \
55                    2>/dev/null | grep ${INVENTORY_PATH} || true)
56
57        NETWORK_ITEM_PATH=${NETWORK_ITEM_PATH#*\"}
58        NETWORK_ITEM_PATH=${NETWORK_ITEM_PATH%\"*}
59
60        NETWORK_ITEM_OBJ=$(mapper get-service ${NETWORK_ITEM_PATH} 2>/dev/null || true)
61
62        if [[ -z "${NETWORK_ITEM_OBJ}" ]]; then
63            show_error 'No Ethernet interface found in the Inventory. Unique hostname not set!'
64            exit 1
65        fi
66
67        MAC_ADDR=$(busctl get-property ${NETWORK_ITEM_OBJ} \
68                               ${NETWORK_ITEM_PATH} \
69                               ${NETWORK_ITEM_IFACE} MACAddress)
70
71        # 's "54:52:01:02:03:04"'
72        MAC_ADDR=${MAC_ADDR#*\"}
73        MAC_ADDR=${MAC_ADDR%\"*}
74
75        hostnamectl set-hostname $(hostname)-${MAC_ADDR}
76    else
77        hostnamectl set-hostname $(hostname)-${BMC_SN}
78    fi
79
80}
81
82sync_hostname
83
84# Prevent start at next boot time
85touch "/var/lib/first-boot-set-hostname"
86