]>
Commit | Line | Data |
---|---|---|
53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
95b74ef6 | 2 | /*** |
96b2fb93 | 3 | Copyright © 2017 Susant Sahani |
95b74ef6 SS |
4 | ***/ |
5 | ||
6 | #include <net/if.h> | |
7 | #include <linux/if_addrlabel.h> | |
8 | ||
9 | #include "alloc-util.h" | |
10 | #include "conf-parser.h" | |
11 | #include "networkd-address-label.h" | |
12 | #include "netlink-util.h" | |
13 | #include "networkd-manager.h" | |
14 | #include "parse-util.h" | |
15 | #include "socket-util.h" | |
16 | ||
17 | int address_label_new(AddressLabel **ret) { | |
8e766630 | 18 | _cleanup_(address_label_freep) AddressLabel *addrlabel = NULL; |
95b74ef6 SS |
19 | |
20 | addrlabel = new0(AddressLabel, 1); | |
21 | if (!addrlabel) | |
22 | return -ENOMEM; | |
23 | ||
1cc6c93a | 24 | *ret = TAKE_PTR(addrlabel); |
95b74ef6 SS |
25 | |
26 | return 0; | |
27 | } | |
28 | ||
29 | void address_label_free(AddressLabel *label) { | |
30 | if (!label) | |
31 | return; | |
32 | ||
33 | if (label->network) { | |
34 | LIST_REMOVE(labels, label->network->address_labels, label); | |
35 | assert(label->network->n_address_labels > 0); | |
36 | label->network->n_address_labels--; | |
37 | ||
38 | if (label->section) { | |
39 | hashmap_remove(label->network->address_labels_by_section, label->section); | |
40 | network_config_section_free(label->section); | |
41 | } | |
42 | } | |
43 | ||
44 | free(label); | |
45 | } | |
46 | ||
47 | static int address_label_new_static(Network *network, const char *filename, unsigned section_line, AddressLabel **ret) { | |
8e766630 LP |
48 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
49 | _cleanup_(address_label_freep) AddressLabel *label = NULL; | |
95b74ef6 SS |
50 | int r; |
51 | ||
52 | assert(network); | |
53 | assert(ret); | |
54 | assert(!!filename == (section_line > 0)); | |
55 | ||
56 | r = network_config_section_new(filename, section_line, &n); | |
57 | if (r < 0) | |
58 | return r; | |
59 | ||
60 | label = hashmap_get(network->address_labels_by_section, n); | |
61 | if (label) { | |
1cc6c93a | 62 | *ret = TAKE_PTR(label); |
95b74ef6 SS |
63 | |
64 | return 0; | |
65 | } | |
66 | ||
67 | r = address_label_new(&label); | |
68 | if (r < 0) | |
69 | return r; | |
70 | ||
1cc6c93a | 71 | label->section = TAKE_PTR(n); |
95b74ef6 SS |
72 | |
73 | r = hashmap_put(network->address_labels_by_section, label->section, label); | |
74 | if (r < 0) | |
75 | return r; | |
76 | ||
77 | label->network = network; | |
78 | LIST_APPEND(labels, network->address_labels, label); | |
79 | network->n_address_labels++; | |
80 | ||
1cc6c93a | 81 | *ret = TAKE_PTR(label); |
95b74ef6 SS |
82 | |
83 | return 0; | |
84 | } | |
85 | ||
86 | int address_label_configure( | |
87 | AddressLabel *label, | |
88 | Link *link, | |
89 | sd_netlink_message_handler_t callback, | |
90 | bool update) { | |
91 | ||
92 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
93 | int r; | |
94 | ||
95 | assert(label); | |
96 | assert(link); | |
97 | assert(link->ifindex > 0); | |
98 | assert(link->manager); | |
99 | assert(link->manager->rtnl); | |
100 | ||
101 | r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &req, RTM_NEWADDRLABEL, | |
f7bf1abe | 102 | link->ifindex, AF_INET6); |
95b74ef6 SS |
103 | if (r < 0) |
104 | return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m"); | |
105 | ||
106 | r = sd_rtnl_message_addrlabel_set_prefixlen(req, label->prefixlen); | |
107 | if (r < 0) | |
108 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
109 | ||
110 | r = sd_netlink_message_append_u32(req, IFAL_LABEL, label->label); | |
111 | if (r < 0) | |
112 | return log_error_errno(r, "Could not append IFAL_LABEL attribute: %m"); | |
113 | ||
114 | r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr.in6); | |
115 | if (r < 0) | |
116 | return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m"); | |
117 | ||
118 | r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); | |
119 | if (r < 0) | |
120 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
121 | ||
122 | link_ref(link); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | int config_parse_address_label_prefix(const char *unit, | |
128 | const char *filename, | |
129 | unsigned line, | |
130 | const char *section, | |
131 | unsigned section_line, | |
132 | const char *lvalue, | |
133 | int ltype, | |
134 | const char *rvalue, | |
135 | void *data, | |
136 | void *userdata) { | |
137 | ||
8e766630 | 138 | _cleanup_(address_label_freep) AddressLabel *n = NULL; |
95b74ef6 | 139 | Network *network = userdata; |
f7bf1abe | 140 | int r; |
95b74ef6 SS |
141 | |
142 | assert(filename); | |
143 | assert(section); | |
144 | assert(lvalue); | |
145 | assert(rvalue); | |
146 | assert(data); | |
147 | ||
148 | r = address_label_new_static(network, filename, section_line, &n); | |
149 | if (r < 0) | |
150 | return r; | |
151 | ||
f7bf1abe | 152 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &n->in_addr, &n->prefixlen); |
95b74ef6 | 153 | if (r < 0) { |
f7bf1abe | 154 | log_syntax(unit, LOG_ERR, filename, line, r, "Address label is invalid, ignoring assignment: %s", rvalue); |
95b74ef6 SS |
155 | return 0; |
156 | } | |
157 | ||
95b74ef6 SS |
158 | n = NULL; |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | int config_parse_address_label( | |
164 | const char *unit, | |
165 | const char *filename, | |
166 | unsigned line, | |
167 | const char *section, | |
168 | unsigned section_line, | |
169 | const char *lvalue, | |
170 | int ltype, | |
171 | const char *rvalue, | |
172 | void *data, | |
173 | void *userdata) { | |
174 | ||
8e766630 | 175 | _cleanup_(address_label_freep) AddressLabel *n = NULL; |
95b74ef6 SS |
176 | Network *network = userdata; |
177 | uint32_t k; | |
178 | int r; | |
179 | ||
180 | assert(filename); | |
181 | assert(section); | |
182 | assert(lvalue); | |
183 | assert(rvalue); | |
184 | assert(data); | |
185 | ||
186 | r = address_label_new_static(network, filename, section_line, &n); | |
187 | if (r < 0) | |
188 | return r; | |
189 | ||
190 | r = safe_atou32(rvalue, &k); | |
191 | if (r < 0) { | |
192 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address label, ignoring: %s", rvalue); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | if (k == 0xffffffffUL) { | |
3fe91079 | 197 | log_syntax(unit, LOG_ERR, filename, line, r, "Address label is invalid, ignoring: %s", rvalue); |
95b74ef6 SS |
198 | return 0; |
199 | } | |
200 | ||
201 | n->label = k; | |
202 | n = NULL; | |
203 | ||
204 | return 0; | |
205 | } |