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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
95b74ef6 SS |
2 | |
3 | #include <net/if.h> | |
4 | #include <linux/if_addrlabel.h> | |
5 | ||
6 | #include "alloc-util.h" | |
7 | #include "conf-parser.h" | |
8 | #include "networkd-address-label.h" | |
9 | #include "netlink-util.h" | |
10 | #include "networkd-manager.h" | |
11 | #include "parse-util.h" | |
12 | #include "socket-util.h" | |
13 | ||
14 | int address_label_new(AddressLabel **ret) { | |
8e766630 | 15 | _cleanup_(address_label_freep) AddressLabel *addrlabel = NULL; |
95b74ef6 SS |
16 | |
17 | addrlabel = new0(AddressLabel, 1); | |
18 | if (!addrlabel) | |
19 | return -ENOMEM; | |
20 | ||
1cc6c93a | 21 | *ret = TAKE_PTR(addrlabel); |
95b74ef6 SS |
22 | |
23 | return 0; | |
24 | } | |
25 | ||
26 | void address_label_free(AddressLabel *label) { | |
27 | if (!label) | |
28 | return; | |
29 | ||
30 | if (label->network) { | |
31 | LIST_REMOVE(labels, label->network->address_labels, label); | |
32 | assert(label->network->n_address_labels > 0); | |
33 | label->network->n_address_labels--; | |
34 | ||
35 | if (label->section) { | |
36 | hashmap_remove(label->network->address_labels_by_section, label->section); | |
37 | network_config_section_free(label->section); | |
38 | } | |
39 | } | |
40 | ||
41 | free(label); | |
42 | } | |
43 | ||
44 | static int address_label_new_static(Network *network, const char *filename, unsigned section_line, AddressLabel **ret) { | |
8e766630 LP |
45 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
46 | _cleanup_(address_label_freep) AddressLabel *label = NULL; | |
95b74ef6 SS |
47 | int r; |
48 | ||
49 | assert(network); | |
50 | assert(ret); | |
51 | assert(!!filename == (section_line > 0)); | |
52 | ||
53 | r = network_config_section_new(filename, section_line, &n); | |
54 | if (r < 0) | |
55 | return r; | |
56 | ||
57 | label = hashmap_get(network->address_labels_by_section, n); | |
58 | if (label) { | |
1cc6c93a | 59 | *ret = TAKE_PTR(label); |
95b74ef6 SS |
60 | |
61 | return 0; | |
62 | } | |
63 | ||
64 | r = address_label_new(&label); | |
65 | if (r < 0) | |
66 | return r; | |
67 | ||
1cc6c93a | 68 | label->section = TAKE_PTR(n); |
95b74ef6 SS |
69 | |
70 | r = hashmap_put(network->address_labels_by_section, label->section, label); | |
71 | if (r < 0) | |
72 | return r; | |
73 | ||
74 | label->network = network; | |
75 | LIST_APPEND(labels, network->address_labels, label); | |
76 | network->n_address_labels++; | |
77 | ||
1cc6c93a | 78 | *ret = TAKE_PTR(label); |
95b74ef6 SS |
79 | |
80 | return 0; | |
81 | } | |
82 | ||
83 | int address_label_configure( | |
84 | AddressLabel *label, | |
85 | Link *link, | |
86 | sd_netlink_message_handler_t callback, | |
87 | bool update) { | |
88 | ||
89 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
90 | int r; | |
91 | ||
92 | assert(label); | |
93 | assert(link); | |
94 | assert(link->ifindex > 0); | |
95 | assert(link->manager); | |
96 | assert(link->manager->rtnl); | |
97 | ||
98 | r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &req, RTM_NEWADDRLABEL, | |
f7bf1abe | 99 | link->ifindex, AF_INET6); |
95b74ef6 SS |
100 | if (r < 0) |
101 | return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m"); | |
102 | ||
103 | r = sd_rtnl_message_addrlabel_set_prefixlen(req, label->prefixlen); | |
104 | if (r < 0) | |
105 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
106 | ||
107 | r = sd_netlink_message_append_u32(req, IFAL_LABEL, label->label); | |
108 | if (r < 0) | |
109 | return log_error_errno(r, "Could not append IFAL_LABEL attribute: %m"); | |
110 | ||
111 | r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr.in6); | |
112 | if (r < 0) | |
113 | return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m"); | |
114 | ||
ee38400b | 115 | r = sd_netlink_call_async(link->manager->rtnl, NULL, req, callback, |
8190a388 | 116 | link_netlink_destroy_callback, link, 0, __func__); |
95b74ef6 SS |
117 | if (r < 0) |
118 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
119 | ||
120 | link_ref(link); | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | int config_parse_address_label_prefix(const char *unit, | |
126 | const char *filename, | |
127 | unsigned line, | |
128 | const char *section, | |
129 | unsigned section_line, | |
130 | const char *lvalue, | |
131 | int ltype, | |
132 | const char *rvalue, | |
133 | void *data, | |
134 | void *userdata) { | |
135 | ||
8e766630 | 136 | _cleanup_(address_label_freep) AddressLabel *n = NULL; |
95b74ef6 | 137 | Network *network = userdata; |
f7bf1abe | 138 | int r; |
95b74ef6 SS |
139 | |
140 | assert(filename); | |
141 | assert(section); | |
142 | assert(lvalue); | |
143 | assert(rvalue); | |
144 | assert(data); | |
145 | ||
146 | r = address_label_new_static(network, filename, section_line, &n); | |
147 | if (r < 0) | |
148 | return r; | |
149 | ||
f7bf1abe | 150 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &n->in_addr, &n->prefixlen); |
95b74ef6 | 151 | if (r < 0) { |
f7bf1abe | 152 | log_syntax(unit, LOG_ERR, filename, line, r, "Address label is invalid, ignoring assignment: %s", rvalue); |
95b74ef6 SS |
153 | return 0; |
154 | } | |
155 | ||
95b74ef6 SS |
156 | n = NULL; |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
161 | int config_parse_address_label( | |
162 | const char *unit, | |
163 | const char *filename, | |
164 | unsigned line, | |
165 | const char *section, | |
166 | unsigned section_line, | |
167 | const char *lvalue, | |
168 | int ltype, | |
169 | const char *rvalue, | |
170 | void *data, | |
171 | void *userdata) { | |
172 | ||
8e766630 | 173 | _cleanup_(address_label_freep) AddressLabel *n = NULL; |
95b74ef6 SS |
174 | Network *network = userdata; |
175 | uint32_t k; | |
176 | int r; | |
177 | ||
178 | assert(filename); | |
179 | assert(section); | |
180 | assert(lvalue); | |
181 | assert(rvalue); | |
182 | assert(data); | |
183 | ||
184 | r = address_label_new_static(network, filename, section_line, &n); | |
185 | if (r < 0) | |
186 | return r; | |
187 | ||
188 | r = safe_atou32(rvalue, &k); | |
189 | if (r < 0) { | |
190 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address label, ignoring: %s", rvalue); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | if (k == 0xffffffffUL) { | |
3fe91079 | 195 | log_syntax(unit, LOG_ERR, filename, line, r, "Address label is invalid, ignoring: %s", rvalue); |
95b74ef6 SS |
196 | return 0; |
197 | } | |
198 | ||
199 | n->label = k; | |
200 | n = NULL; | |
201 | ||
202 | return 0; | |
203 | } |