1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright © 2017 Susant Sahani
***/
#include <net/if.h>
#include <linux/if_addrlabel.h>
#include "alloc-util.h"
#include "conf-parser.h"
#include "networkd-address-label.h"
#include "netlink-util.h"
#include "networkd-manager.h"
#include "parse-util.h"
#include "socket-util.h"
int address_label_new(AddressLabel **ret) {
_cleanup_(address_label_freep) AddressLabel *addrlabel = NULL;
addrlabel = new0(AddressLabel, 1);
if (!addrlabel)
return -ENOMEM;
*ret = TAKE_PTR(addrlabel);
return 0;
}
void address_label_free(AddressLabel *label) {
if (!label)
return;
if (label->network) {
LIST_REMOVE(labels, label->network->address_labels, label);
assert(label->network->n_address_labels > 0);
label->network->n_address_labels--;
if (label->section) {
hashmap_remove(label->network->address_labels_by_section, label->section);
network_config_section_free(label->section);
}
}
free(label);
}
static int address_label_new_static(Network *network, const char *filename, unsigned section_line, AddressLabel **ret) {
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
_cleanup_(address_label_freep) AddressLabel *label = NULL;
int r;
assert(network);
assert(ret);
assert(!!filename == (section_line > 0));
r = network_config_section_new(filename, section_line, &n);
if (r < 0)
return r;
label = hashmap_get(network->address_labels_by_section, n);
if (label) {
*ret = TAKE_PTR(label);
return 0;
}
r = address_label_new(&label);
if (r < 0)
return r;
label->section = TAKE_PTR(n);
r = hashmap_put(network->address_labels_by_section, label->section, label);
if (r < 0)
return r;
label->network = network;
LIST_APPEND(labels, network->address_labels, label);
network->n_address_labels++;
*ret = TAKE_PTR(label);
return 0;
}
int address_label_configure(
AddressLabel *label,
Link *link,
sd_netlink_message_handler_t callback,
bool update) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(label);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &req, RTM_NEWADDRLABEL,
link->ifindex, AF_INET6);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
r = sd_rtnl_message_addrlabel_set_prefixlen(req, label->prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set prefixlen: %m");
r = sd_netlink_message_append_u32(req, IFAL_LABEL, label->label);
if (r < 0)
return log_error_errno(r, "Could not append IFAL_LABEL attribute: %m");
r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m");
r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int config_parse_address_label_prefix(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_(address_label_freep) AddressLabel *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = address_label_new_static(network, filename, section_line, &n);
if (r < 0)
return r;
r = in_addr_prefix_from_string(rvalue, AF_INET6, &n->in_addr, &n->prefixlen);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Address label is invalid, ignoring assignment: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_address_label(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_(address_label_freep) AddressLabel *n = NULL;
Network *network = userdata;
uint32_t k;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = address_label_new_static(network, filename, section_line, &n);
if (r < 0)
return r;
r = safe_atou32(rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address label, ignoring: %s", rvalue);
return 0;
}
if (k == 0xffffffffUL) {
log_syntax(unit, LOG_ERR, filename, line, r, "Adress label is invalid, ignoring: %s", rvalue);
return 0;
}
n->label = k;
n = NULL;
return 0;
}
|
