udev: introduce AlternativeNamesPolicy= setting
This commit is contained in:
Yu Watanabe
parent
bb181dd4a6
commit
ef1d2c07f9
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@ -356,6 +356,17 @@
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>AlternativeNamesPolicy=</varname></term>
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<listitem>
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<para>A space-separated list of policies by which the interface's alternative names
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should be set. Each of the policies may fail, and all successful policies are used. The
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available policies are <literal>database</literal>, <literal>onboard</literal>,
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<literal>slot</literal>, <literal>path</literal>, and <literal>mac</literal>. If the
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kernel does not support the alternative names, then this setting will be ignored.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>AlternativeName=</varname></term>
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<listitem>
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@ -19,40 +19,41 @@ struct ConfigPerfItem;
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%struct-type
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%includes
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%%
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Match.MACAddress, config_parse_hwaddrs, 0, offsetof(link_config, match_mac)
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Match.OriginalName, config_parse_match_ifnames, 0, offsetof(link_config, match_name)
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Match.Path, config_parse_match_strv, 0, offsetof(link_config, match_path)
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Match.Driver, config_parse_match_strv, 0, offsetof(link_config, match_driver)
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Match.Type, config_parse_match_strv, 0, offsetof(link_config, match_type)
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Match.Property, config_parse_match_property, 0, offsetof(link_config, match_property)
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Match.Host, config_parse_net_condition, CONDITION_HOST, offsetof(link_config, conditions)
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Match.Virtualization, config_parse_net_condition, CONDITION_VIRTUALIZATION, offsetof(link_config, conditions)
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Match.KernelCommandLine, config_parse_net_condition, CONDITION_KERNEL_COMMAND_LINE, offsetof(link_config, conditions)
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Match.KernelVersion, config_parse_net_condition, CONDITION_KERNEL_VERSION, offsetof(link_config, conditions)
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Match.Architecture, config_parse_net_condition, CONDITION_ARCHITECTURE, offsetof(link_config, conditions)
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Link.Description, config_parse_string, 0, offsetof(link_config, description)
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Link.MACAddressPolicy, config_parse_mac_address_policy, 0, offsetof(link_config, mac_address_policy)
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Link.MACAddress, config_parse_hwaddr, 0, offsetof(link_config, mac)
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Link.NamePolicy, config_parse_name_policy, 0, offsetof(link_config, name_policy)
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Link.Name, config_parse_ifname, 0, offsetof(link_config, name)
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Link.AlternativeName, config_parse_ifnames, 1, offsetof(link_config, alternative_names)
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Link.Alias, config_parse_ifalias, 0, offsetof(link_config, alias)
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Link.MTUBytes, config_parse_mtu, AF_UNSPEC, offsetof(link_config, mtu)
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Link.BitsPerSecond, config_parse_si_size, 0, offsetof(link_config, speed)
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Link.Duplex, config_parse_duplex, 0, offsetof(link_config, duplex)
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Link.AutoNegotiation, config_parse_tristate, 0, offsetof(link_config, autonegotiation)
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Link.WakeOnLan, config_parse_wol, 0, offsetof(link_config, wol)
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Link.Port, config_parse_port, 0, offsetof(link_config, port)
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Link.GenericSegmentationOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_GSO])
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Link.TCPSegmentationOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_TSO])
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Link.TCP6SegmentationOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_TSO6])
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Link.UDPSegmentationOffload, config_parse_warn_compat, DISABLED_LEGACY, 0
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Link.GenericReceiveOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_GRO])
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Link.LargeReceiveOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_LRO])
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Link.RxChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.TxChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.OtherChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.CombinedChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.Advertise, config_parse_advertise, 0, offsetof(link_config, advertise)
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Link.RxBufferSize, config_parse_nic_buffer_size, 0, offsetof(link_config, ring)
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Link.TxBufferSize, config_parse_nic_buffer_size, 0, offsetof(link_config, ring)
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Match.MACAddress, config_parse_hwaddrs, 0, offsetof(link_config, match_mac)
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Match.OriginalName, config_parse_match_ifnames, 0, offsetof(link_config, match_name)
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Match.Path, config_parse_match_strv, 0, offsetof(link_config, match_path)
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Match.Driver, config_parse_match_strv, 0, offsetof(link_config, match_driver)
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Match.Type, config_parse_match_strv, 0, offsetof(link_config, match_type)
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Match.Property, config_parse_match_property, 0, offsetof(link_config, match_property)
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Match.Host, config_parse_net_condition, CONDITION_HOST, offsetof(link_config, conditions)
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Match.Virtualization, config_parse_net_condition, CONDITION_VIRTUALIZATION, offsetof(link_config, conditions)
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Match.KernelCommandLine, config_parse_net_condition, CONDITION_KERNEL_COMMAND_LINE, offsetof(link_config, conditions)
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Match.KernelVersion, config_parse_net_condition, CONDITION_KERNEL_VERSION, offsetof(link_config, conditions)
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Match.Architecture, config_parse_net_condition, CONDITION_ARCHITECTURE, offsetof(link_config, conditions)
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Link.Description, config_parse_string, 0, offsetof(link_config, description)
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Link.MACAddressPolicy, config_parse_mac_address_policy, 0, offsetof(link_config, mac_address_policy)
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Link.MACAddress, config_parse_hwaddr, 0, offsetof(link_config, mac)
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Link.NamePolicy, config_parse_name_policy, 0, offsetof(link_config, name_policy)
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Link.Name, config_parse_ifname, 0, offsetof(link_config, name)
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Link.AlternativeName, config_parse_ifnames, 1, offsetof(link_config, alternative_names)
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Link.AlternativeNamesPolicy, config_parse_alternative_names_policy, 0, offsetof(link_config, alternative_names_policy)
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Link.Alias, config_parse_ifalias, 0, offsetof(link_config, alias)
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Link.MTUBytes, config_parse_mtu, AF_UNSPEC, offsetof(link_config, mtu)
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Link.BitsPerSecond, config_parse_si_size, 0, offsetof(link_config, speed)
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Link.Duplex, config_parse_duplex, 0, offsetof(link_config, duplex)
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Link.AutoNegotiation, config_parse_tristate, 0, offsetof(link_config, autonegotiation)
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Link.WakeOnLan, config_parse_wol, 0, offsetof(link_config, wol)
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Link.Port, config_parse_port, 0, offsetof(link_config, port)
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Link.GenericSegmentationOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_GSO])
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Link.TCPSegmentationOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_TSO])
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Link.TCP6SegmentationOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_TSO6])
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Link.UDPSegmentationOffload, config_parse_warn_compat, DISABLED_LEGACY, 0
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Link.GenericReceiveOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_GRO])
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Link.LargeReceiveOffload, config_parse_tristate, 0, offsetof(link_config, features[NET_DEV_FEAT_LRO])
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Link.RxChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.TxChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.OtherChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.CombinedChannels, config_parse_channel, 0, offsetof(link_config, channels)
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Link.Advertise, config_parse_advertise, 0, offsetof(link_config, advertise)
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Link.RxBufferSize, config_parse_nic_buffer_size, 0, offsetof(link_config, ring)
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Link.TxBufferSize, config_parse_nic_buffer_size, 0, offsetof(link_config, ring)
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@ -59,6 +59,7 @@ static void link_config_free(link_config *link) {
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free(link->name_policy);
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free(link->name);
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strv_free(link->alternative_names);
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free(link->alternative_names_policy);
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free(link->alias);
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free(link);
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@ -326,6 +327,7 @@ static int get_mac(sd_device *device, MACAddressPolicy policy, struct ether_addr
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int link_config_apply(link_config_ctx *ctx, link_config *config,
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sd_device *device, const char **name) {
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_cleanup_strv_free_ char **altnames = NULL;
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struct ether_addr generated_mac;
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struct ether_addr *mac = NULL;
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const char *new_name = NULL;
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@ -461,11 +463,52 @@ int link_config_apply(link_config_ctx *ctx, link_config *config,
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if (r < 0)
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return log_warning_errno(r, "Could not set Alias=, MACAddress= or MTU= on %s: %m", old_name);
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r = rtnl_set_link_alternative_names(&ctx->rtnl, ifindex, config->alternative_names);
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if (config->alternative_names) {
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altnames = strv_copy(config->alternative_names);
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if (!altnames)
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return log_oom();
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}
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if (config->alternative_names_policy)
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for (NamePolicy *p = config->alternative_names_policy; *p != _NAMEPOLICY_INVALID; p++) {
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const char *n;
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switch (*p) {
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case NAMEPOLICY_DATABASE:
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(void) sd_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE", &n);
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break;
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case NAMEPOLICY_ONBOARD:
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(void) sd_device_get_property_value(device, "ID_NET_NAME_ONBOARD", &n);
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break;
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case NAMEPOLICY_SLOT:
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(void) sd_device_get_property_value(device, "ID_NET_NAME_SLOT", &n);
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break;
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case NAMEPOLICY_PATH:
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(void) sd_device_get_property_value(device, "ID_NET_NAME_PATH", &n);
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break;
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case NAMEPOLICY_MAC:
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(void) sd_device_get_property_value(device, "ID_NET_NAME_MAC", &n);
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break;
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default:
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assert_not_reached("invalid policy");
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}
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if (!isempty(n)) {
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r = strv_extend(&altnames, n);
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if (r < 0)
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return log_oom();
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}
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}
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if (new_name)
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strv_remove(altnames, new_name);
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strv_remove(altnames, old_name);
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strv_uniq(altnames);
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r = rtnl_set_link_alternative_names(&ctx->rtnl, ifindex, altnames);
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if (r == -EOPNOTSUPP)
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log_debug_errno(r, "Could not set AlternativeName= on %s, ignoring: %m", old_name);
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log_debug_errno(r, "Could not set AlternativeName= or apply AlternativeNamesPolicy= on %s, ignoring: %m", old_name);
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else if (r < 0)
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return log_warning_errno(r, "Could not set AlternativeName= on %s: %m", old_name);
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return log_warning_errno(r, "Could not set AlternativeName= or apply AlternativeNamesPolicy= on %s: %m", old_name);
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*name = new_name;
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@ -513,3 +556,16 @@ DEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy);
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DEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy,
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_NAMEPOLICY_INVALID,
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"Failed to parse interface name policy");
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static const char* const alternative_names_policy_table[_NAMEPOLICY_MAX] = {
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[NAMEPOLICY_DATABASE] = "database",
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[NAMEPOLICY_ONBOARD] = "onboard",
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[NAMEPOLICY_SLOT] = "slot",
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[NAMEPOLICY_PATH] = "path",
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[NAMEPOLICY_MAC] = "mac",
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};
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DEFINE_STRING_TABLE_LOOKUP(alternative_names_policy, NamePolicy);
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DEFINE_CONFIG_PARSE_ENUMV(config_parse_alternative_names_policy, alternative_names_policy, NamePolicy,
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_NAMEPOLICY_INVALID,
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"Failed to parse alternative names policy");
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@ -47,6 +47,7 @@ struct link_config {
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struct ether_addr *mac;
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MACAddressPolicy mac_address_policy;
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NamePolicy *name_policy;
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NamePolicy *alternative_names_policy;
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char *name;
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char **alternative_names;
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char *alias;
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@ -79,6 +80,9 @@ int link_get_driver(link_config_ctx *ctx, sd_device *device, char **ret);
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const char *name_policy_to_string(NamePolicy p) _const_;
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NamePolicy name_policy_from_string(const char *p) _pure_;
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const char *alternative_names_policy_to_string(NamePolicy p) _const_;
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NamePolicy alternative_names_policy_from_string(const char *p) _pure_;
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const char *mac_address_policy_to_string(MACAddressPolicy p) _const_;
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MACAddressPolicy mac_address_policy_from_string(const char *p) _pure_;
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@ -87,3 +91,4 @@ const struct ConfigPerfItem* link_config_gperf_lookup(const char *key, GPERF_LEN
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CONFIG_PARSER_PROTOTYPE(config_parse_mac_address_policy);
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CONFIG_PARSER_PROTOTYPE(config_parse_name_policy);
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CONFIG_PARSER_PROTOTYPE(config_parse_alternative_names_policy);
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@ -16,6 +16,7 @@ MACAddressPolicy=
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MACAddress=
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NamePolicy=
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Name=
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AlternativeNamesPolicy=
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AlternativeName=
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Alias=
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MTUBytes=
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