blob: e11c2e6112303ef69fb32a446c42aea0524e8a01 [file] [log] [blame]
Adriana Kobylakfb4d2252016-06-29 21:44:30 -05001#!/usr/bin/python -u
2#
3# Copyright 2016 IBM Corporation
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9# http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
14# implied.
15# See the License for the specific language governing permissions and
16# limitations under the License.
17
18
19import sys
20import dbus
21import argparse
22import subprocess
23import obmc_system_config as System
24
25INV_DBUS_NAME = 'org.openbmc.Inventory'
26INV_INTF_NAME = 'org.openbmc.InventoryItem'
27NET_DBUS_NAME = 'org.openbmc.NetworkManager'
28NET_OBJ_NAME = '/org/openbmc/NetworkManager/Interface'
29CHS_DBUS_NAME = 'org.openbmc.control.Chassis'
30CHS_OBJ_NAME = '/org/openbmc/control/chassis0'
31PROP_INTF_NAME = 'org.freedesktop.DBus.Properties'
32
33FRUS = System.FRU_INSTANCES
34
35# IEEE 802 MAC address mask for locally administered.
36# This means the admin has set the MAC and is no longer
37# the unique number set by the device manufacturer.
38MAC_LOCALLY_ADMIN_MASK = 0x20000000000
39
40
41# Get the inventory dbus path based on the requested fru
42def get_inv_obj_path(fru_type, fru_name):
43 obj_path = ''
44 for f in FRUS.keys():
45 if (FRUS[f]['fru_type'] == fru_type and f.endswith(fru_name)):
46 obj_path = f.replace("<inventory_root>", System.INVENTORY_ROOT)
47 return obj_path
48
49
50# Get the inventory property value
51def get_inv_value(obj, prop_name):
52 value = ''
53 dbus_method = obj.get_dbus_method("Get", PROP_INTF_NAME)
54 value = dbus_method(INV_INTF_NAME, prop_name)
55 return value
56
57
58# Get the value of the mac on the system without ':' separators
59def get_sys_mac(obj):
60 sys_mac = ''
61 dbus_method = obj.get_dbus_method("GetHwAddress", NET_DBUS_NAME)
62 sys_mac = dbus_method("eth0")
63 sys_mac = sys_mac.replace(":", "")
64 return sys_mac
65
66
67# Replace the value of the system mac with the value of the inventory
68# MAC if the system MAC is not locally administered because this means
69# the system admin has purposely set the MAC
70def sync_mac(obj, inv_mac, sys_mac):
71 # Convert sys MAC to int to perform bitwise '&'
72 int_sys_mac = int(sys_mac, 16)
73 if not int_sys_mac & MAC_LOCALLY_ADMIN_MASK:
74 # Sys MAC is not locally administered, go replace it with inv value
75 # Add the ':' separators
76 mac_str = ':'.join([inv_mac[i]+inv_mac[i+1] for i in range(0, 12, 2)])
77 # The Set HW Method already has checking for mac format
78 dbus_method = obj.get_dbus_method("SetHwAddress", NET_DBUS_NAME)
79 dbus_method("eth0", mac_str)
80
81
82# Get sys uuid
83def get_sys_uuid(obj):
84 sys_uuid = ''
85 dbus_method = obj.get_dbus_method("Get", PROP_INTF_NAME)
86 sys_uuid = dbus_method(CHS_DBUS_NAME, "uuid")
87 return sys_uuid
88
89
90# Set sys uuid, this reboots the BMC for the value to take effect
91def set_sys_uuid(uuid):
92 rc = subprocess.call(["fw_setenv", "uuid", uuid])
93 if rc == 0:
94 print "Rebooting BMC to set uuid"
95 # TODO Uncomment once sync from u-boot to /etc/machine-id is in place
96 # Issue openbmc/openbmc#479
97 # rc = subprocess.call(["reboot"])
98 else:
99 print "Error setting uuid"
100
101if __name__ == '__main__':
102 arg = argparse.ArgumentParser()
103 arg.add_argument('-t')
104 arg.add_argument('-n')
105 arg.add_argument('-p')
106 arg.add_argument('-s')
107
108 opt = arg.parse_args()
109 fru_type = opt.t
110 fru_name = opt.n
111 prop_name = opt.p
112 sync_type = opt.s
113
114 bus = dbus.SystemBus()
115 inv_obj_path = get_inv_obj_path(fru_type, fru_name)
116 inv_obj = bus.get_object(INV_DBUS_NAME, inv_obj_path)
117 net_obj = bus.get_object(NET_DBUS_NAME, NET_OBJ_NAME)
118 chs_obj = bus.get_object(CHS_DBUS_NAME, CHS_OBJ_NAME)
119
120 # Get the value of the requested inventory property
121 inv_value = get_inv_value(inv_obj, prop_name)
122
123 if sync_type == "mac":
124 sys_mac = get_sys_mac(net_obj)
125 if inv_value != sys_mac:
126 sync_mac(net_obj, inv_value, sys_mac)
127 elif sync_type == "uuid":
128 sys_uuid = get_sys_uuid(chs_obj)
129 if inv_value != sys_uuid:
130 set_sys_uuid(inv_value)