0penBmc的DBus API
最近把FT2000+/64收拾一下，记一下OpenBMC的dbus api怎么用
OpenBMC的DBus
这个BMC固件的OpenBMC有点毛病，配置无法正常保存，但是overlay还是正常的，用户分区的东西可以持久化
因此要用优雅的方式存储mac地址，就得用DBus接口来配置MAC地址
busctl
先看看都有哪些东西
busctl list
确认要改的服务为xyz.openbmc_project.Network这个很好理解
先看看我要用的对象是啥
busctl tree xyz.openbmc_project.Network
`-/xyz
`-/xyz/openbmc_project
`-/xyz/openbmc_project/network
|-/xyz/openbmc_project/network/config
| `-/xyz/openbmc_project/network/config/dhcp
|-/xyz/openbmc_project/network/eth0
| `-/xyz/openbmc_project/network/eth0/ipv4
| `-/xyz/openbmc_project/network/eth0/ipv4/12345678
`-/xyz/openbmc_project/network/eth1
`-/xyz/openbmc_project/network/eth1/ipv4
`-/xyz/openbmc_project/network/eth1/ipv4/12345678
根据Google gemini的幻觉，应该是/xyz/openbmc_project/network/eth0
这个幻觉叫我用xyz.openbmc_project.Network.EthernetInterface接口，试了下报错Unknown property or interface.
于是
busctl introspect xyz.openbmc_project.Network /xyz/openbmc_project/network/eth0
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.DBus.Introspectable interface - - -
.Introspect method - s -
org.freedesktop.DBus.Peer interface - - -
.GetMachineId method - s -
.Ping method - - -
org.freedesktop.DBus.Properties interface - - -
.Get method ss v -
.GetAll method s a{sv} -
.Set method ssv - -
.PropertiesChanged signal sa{sv}as - -
xyz.openbmc_project.Collection.DeleteAll interface - - -
.DeleteAll method - - -
xyz.openbmc_project.Network.EthernetInterface interface - - -
.AutoNeg property b false emits-change writable
.DHCPEnabled property s "xyz.openbmc_project.Network.Ethernet... emits-change writable
.DefaultGateway property s "" emits-change writable
.DefaultGateway6 property s "" emits-change writable
.DomainName property as 0 emits-change writable
.IPv6AcceptRA property b false emits-change writable
.InterfaceName property s "eth0" emits-change writable
.LinkLocalAutoConf property s "xyz.openbmc_project.Network.Ethernet... emits-change writable
.LinkUp property b false const
.NICEnabled property b true emits-change writable
.NTPServers property as 0 emits-change writable
.Nameservers property as 0 emits-change writable
.Speed property u 0 emits-change writable
.StaticNameServers property as 0 emits-change writable
.StaticNameServers6 property as 0 emits-change writable
xyz.openbmc_project.Network.IP.Create interface - - -
.IP method ssys o -
xyz.openbmc_project.Network.MACAddress interface - - -
.MACAddress property s "00:00:00:00:00:01" emits-change writable
xyz.openbmc_project.Network.Neighbor.CreateStatic interface - - -
.Neighbor method ss o -
因此执行以下命令改mac
busctl set-property xyz.openbmc_project.Network /xyz/openbmc_project/network/eth0 xyz.openbmc_project.Network.MACAddress MACAddress s 'xx:xx:xx:xx:xx:xx'
改完没多久，又给我改回去了。。。
翻找一下发现了另一个地方
busctl set-property xyz.openbmc_project.Settings /xyz/openbmc_project/network/host0/intf xyz.openbmc_project.Network.MACAddress MACAddress s "xx:xx:xx:xx:xx:xx"
过了一会 还是给改回去
没辙了先咕了