1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2017 Susant Sahani
9 #include <linux/if_addrlabel.h>
11 #include "alloc-util.h"
12 #include "conf-parser.h"
13 #include "networkd-address-label.h"
14 #include "netlink-util.h"
15 #include "networkd-manager.h"
16 #include "parse-util.h"
17 #include "socket-util.h"
19 int address_label_new(AddressLabel
**ret
) {
20 _cleanup_(address_label_freep
) AddressLabel
*addrlabel
= NULL
;
22 addrlabel
= new0(AddressLabel
, 1);
26 *ret
= TAKE_PTR(addrlabel
);
31 void address_label_free(AddressLabel
*label
) {
36 LIST_REMOVE(labels
, label
->network
->address_labels
, label
);
37 assert(label
->network
->n_address_labels
> 0);
38 label
->network
->n_address_labels
--;
41 hashmap_remove(label
->network
->address_labels_by_section
, label
->section
);
42 network_config_section_free(label
->section
);
49 static int address_label_new_static(Network
*network
, const char *filename
, unsigned section_line
, AddressLabel
**ret
) {
50 _cleanup_(network_config_section_freep
) NetworkConfigSection
*n
= NULL
;
51 _cleanup_(address_label_freep
) AddressLabel
*label
= NULL
;
56 assert(!!filename
== (section_line
> 0));
58 r
= network_config_section_new(filename
, section_line
, &n
);
62 label
= hashmap_get(network
->address_labels_by_section
, n
);
64 *ret
= TAKE_PTR(label
);
69 r
= address_label_new(&label
);
73 label
->section
= TAKE_PTR(n
);
75 r
= hashmap_put(network
->address_labels_by_section
, label
->section
, label
);
79 label
->network
= network
;
80 LIST_APPEND(labels
, network
->address_labels
, label
);
81 network
->n_address_labels
++;
83 *ret
= TAKE_PTR(label
);
88 int address_label_configure(
91 sd_netlink_message_handler_t callback
,
94 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
;
99 assert(link
->ifindex
> 0);
100 assert(link
->manager
);
101 assert(link
->manager
->rtnl
);
103 r
= sd_rtnl_message_new_addrlabel(link
->manager
->rtnl
, &req
, RTM_NEWADDRLABEL
,
104 link
->ifindex
, AF_INET6
);
106 return log_error_errno(r
, "Could not allocate RTM_NEWADDR message: %m");
108 r
= sd_rtnl_message_addrlabel_set_prefixlen(req
, label
->prefixlen
);
110 return log_error_errno(r
, "Could not set prefixlen: %m");
112 r
= sd_netlink_message_append_u32(req
, IFAL_LABEL
, label
->label
);
114 return log_error_errno(r
, "Could not append IFAL_LABEL attribute: %m");
116 r
= sd_netlink_message_append_in6_addr(req
, IFA_ADDRESS
, &label
->in_addr
.in6
);
118 return log_error_errno(r
, "Could not append IFA_ADDRESS attribute: %m");
120 r
= sd_netlink_call_async(link
->manager
->rtnl
, req
, callback
, link
, 0, NULL
);
122 return log_error_errno(r
, "Could not send rtnetlink message: %m");
129 int config_parse_address_label_prefix(const char *unit
,
130 const char *filename
,
133 unsigned section_line
,
140 _cleanup_(address_label_freep
) AddressLabel
*n
= NULL
;
141 Network
*network
= userdata
;
150 r
= address_label_new_static(network
, filename
, section_line
, &n
);
154 r
= in_addr_prefix_from_string(rvalue
, AF_INET6
, &n
->in_addr
, &n
->prefixlen
);
156 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Address label is invalid, ignoring assignment: %s", rvalue
);
165 int config_parse_address_label(
167 const char *filename
,
170 unsigned section_line
,
177 _cleanup_(address_label_freep
) AddressLabel
*n
= NULL
;
178 Network
*network
= userdata
;
188 r
= address_label_new_static(network
, filename
, section_line
, &n
);
192 r
= safe_atou32(rvalue
, &k
);
194 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Failed to parse address label, ignoring: %s", rvalue
);
198 if (k
== 0xffffffffUL
) {
199 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Adress label is invalid, ignoring: %s", rvalue
);