Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 : #ifndef foosdnetlinkhfoo
3 : #define foosdnetlinkhfoo
4 :
5 : /***
6 : systemd is free software; you can redistribute it and/or modify it
7 : under the terms of the GNU Lesser General Public License as published by
8 : the Free Software Foundation; either version 2.1 of the License, or
9 : (at your option) any later version.
10 :
11 : systemd is distributed in the hope that it will be useful, but
12 : WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 : Lesser General Public License for more details.
15 :
16 : You should have received a copy of the GNU Lesser General Public License
17 : along with systemd; If not, see <http://www.gnu.org/licenses/>.
18 : ***/
19 :
20 : #include <inttypes.h>
21 : #include <net/ethernet.h>
22 : #include <netinet/in.h>
23 : #include <linux/neighbour.h>
24 : #include <linux/rtnetlink.h>
25 :
26 : #include "sd-event.h"
27 :
28 : #include "_sd-common.h"
29 :
30 : _SD_BEGIN_DECLARATIONS;
31 :
32 : typedef struct sd_netlink sd_netlink;
33 : typedef struct sd_genl_socket sd_genl_socket;
34 : typedef struct sd_netlink_message sd_netlink_message;
35 : typedef struct sd_netlink_slot sd_netlink_slot;
36 :
37 : typedef enum sd_gen_family {
38 : SD_GENL_ID_CTRL,
39 : SD_GENL_WIREGUARD,
40 : SD_GENL_FOU,
41 : SD_GENL_L2TP,
42 : SD_GENL_MACSEC,
43 : } sd_genl_family;
44 :
45 : /* callback */
46 :
47 : typedef int (*sd_netlink_message_handler_t)(sd_netlink *nl, sd_netlink_message *m, void *userdata);
48 : typedef _sd_destroy_t sd_netlink_destroy_t;
49 :
50 : /* bus */
51 : int sd_netlink_new_from_netlink(sd_netlink **nl, int fd);
52 : int sd_netlink_open(sd_netlink **nl);
53 : int sd_netlink_open_fd(sd_netlink **nl, int fd);
54 : int sd_netlink_inc_rcvbuf(sd_netlink *nl, const size_t size);
55 :
56 : sd_netlink *sd_netlink_ref(sd_netlink *nl);
57 : sd_netlink *sd_netlink_unref(sd_netlink *nl);
58 :
59 : int sd_netlink_send(sd_netlink *nl, sd_netlink_message *message, uint32_t *serial);
60 : int sd_netlink_call_async(sd_netlink *nl, sd_netlink_slot **ret_slot, sd_netlink_message *message,
61 : sd_netlink_message_handler_t callback, sd_netlink_destroy_t destoy_callback,
62 : void *userdata, uint64_t usec, const char *description);
63 : int sd_netlink_call(sd_netlink *nl, sd_netlink_message *message, uint64_t timeout,
64 : sd_netlink_message **reply);
65 :
66 : int sd_netlink_get_events(sd_netlink *nl);
67 : int sd_netlink_get_timeout(sd_netlink *nl, uint64_t *timeout);
68 : int sd_netlink_process(sd_netlink *nl, sd_netlink_message **ret);
69 : int sd_netlink_wait(sd_netlink *nl, uint64_t timeout);
70 :
71 : int sd_netlink_add_match(sd_netlink *nl, sd_netlink_slot **ret_slot, uint16_t match,
72 : sd_netlink_message_handler_t callback,
73 : sd_netlink_destroy_t destroy_callback,
74 : void *userdata, const char *description);
75 :
76 : int sd_netlink_attach_event(sd_netlink *nl, sd_event *e, int64_t priority);
77 : int sd_netlink_detach_event(sd_netlink *nl);
78 :
79 : int sd_netlink_message_append_string(sd_netlink_message *m, unsigned short type, const char *data);
80 : int sd_netlink_message_append_flag(sd_netlink_message *m, unsigned short type);
81 : int sd_netlink_message_append_u8(sd_netlink_message *m, unsigned short type, uint8_t data);
82 : int sd_netlink_message_append_u16(sd_netlink_message *m, unsigned short type, uint16_t data);
83 : int sd_netlink_message_append_u32(sd_netlink_message *m, unsigned short type, uint32_t data);
84 : int sd_netlink_message_append_u64(sd_netlink_message *m, unsigned short type, uint64_t data);
85 : int sd_netlink_message_append_data(sd_netlink_message *m, unsigned short type, const void *data, size_t len);
86 : int sd_netlink_message_append_in_addr(sd_netlink_message *m, unsigned short type, const struct in_addr *data);
87 : int sd_netlink_message_append_in6_addr(sd_netlink_message *m, unsigned short type, const struct in6_addr *data);
88 : int sd_netlink_message_append_sockaddr_in(sd_netlink_message *m, unsigned short type, const struct sockaddr_in *data);
89 : int sd_netlink_message_append_sockaddr_in6(sd_netlink_message *m, unsigned short type, const struct sockaddr_in6 *data);
90 : int sd_netlink_message_append_ether_addr(sd_netlink_message *m, unsigned short type, const struct ether_addr *data);
91 : int sd_netlink_message_append_cache_info(sd_netlink_message *m, unsigned short type, const struct ifa_cacheinfo *info);
92 :
93 : int sd_netlink_message_open_container(sd_netlink_message *m, unsigned short type);
94 : int sd_netlink_message_open_container_union(sd_netlink_message *m, unsigned short type, const char *key);
95 : int sd_netlink_message_close_container(sd_netlink_message *m);
96 :
97 : int sd_netlink_message_read(sd_netlink_message *m, unsigned short type, size_t size, void *data);
98 : int sd_netlink_message_read_string(sd_netlink_message *m, unsigned short type, const char **data);
99 : int sd_netlink_message_read_u8(sd_netlink_message *m, unsigned short type, uint8_t *data);
100 : int sd_netlink_message_read_u16(sd_netlink_message *m, unsigned short type, uint16_t *data);
101 : int sd_netlink_message_read_u32(sd_netlink_message *m, unsigned short type, uint32_t *data);
102 : int sd_netlink_message_read_ether_addr(sd_netlink_message *m, unsigned short type, struct ether_addr *data);
103 : int sd_netlink_message_read_cache_info(sd_netlink_message *m, unsigned short type, struct ifa_cacheinfo *info);
104 : int sd_netlink_message_read_in_addr(sd_netlink_message *m, unsigned short type, struct in_addr *data);
105 : int sd_netlink_message_read_in6_addr(sd_netlink_message *m, unsigned short type, struct in6_addr *data);
106 : int sd_netlink_message_enter_container(sd_netlink_message *m, unsigned short type);
107 : int sd_netlink_message_enter_array(sd_netlink_message *m, unsigned short type);
108 : int sd_netlink_message_exit_container(sd_netlink_message *m);
109 :
110 : int sd_netlink_message_open_array(sd_netlink_message *m, uint16_t type);
111 : int sd_netlink_message_cancel_array(sd_netlink_message *m);
112 :
113 : int sd_netlink_message_rewind(sd_netlink_message *m);
114 :
115 : sd_netlink_message *sd_netlink_message_next(sd_netlink_message *m);
116 :
117 : sd_netlink_message *sd_netlink_message_ref(sd_netlink_message *m);
118 : sd_netlink_message *sd_netlink_message_unref(sd_netlink_message *m);
119 :
120 : int sd_netlink_message_request_dump(sd_netlink_message *m, int dump);
121 : int sd_netlink_message_is_error(sd_netlink_message *m);
122 : int sd_netlink_message_get_errno(sd_netlink_message *m);
123 : int sd_netlink_message_get_type(sd_netlink_message *m, uint16_t *type);
124 : int sd_netlink_message_set_flags(sd_netlink_message *m, uint16_t flags);
125 : int sd_netlink_message_is_broadcast(sd_netlink_message *m);
126 :
127 : /* rtnl */
128 :
129 : int sd_rtnl_message_new_link(sd_netlink *nl, sd_netlink_message **ret, uint16_t msg_type, int index);
130 : int sd_rtnl_message_new_addr_update(sd_netlink *nl, sd_netlink_message **ret, int index, int family);
131 : int sd_rtnl_message_new_addr(sd_netlink *nl, sd_netlink_message **ret, uint16_t msg_type, int index, int family);
132 : int sd_rtnl_message_new_route(sd_netlink *nl, sd_netlink_message **ret, uint16_t nlmsg_type, int rtm_family, unsigned char rtm_protocol);
133 : int sd_rtnl_message_new_neigh(sd_netlink *nl, sd_netlink_message **ret, uint16_t msg_type, int index, int nda_family);
134 :
135 : int sd_rtnl_message_get_family(sd_netlink_message *m, int *family);
136 :
137 : int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen);
138 : int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope);
139 : int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags);
140 : int sd_rtnl_message_addr_get_family(sd_netlink_message *m, int *family);
141 : int sd_rtnl_message_addr_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen);
142 : int sd_rtnl_message_addr_get_scope(sd_netlink_message *m, unsigned char *scope);
143 : int sd_rtnl_message_addr_get_flags(sd_netlink_message *m, unsigned char *flags);
144 : int sd_rtnl_message_addr_get_ifindex(sd_netlink_message *m, int *ifindex);
145 :
146 : int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change);
147 : int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type);
148 : int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family);
149 : int sd_rtnl_message_link_get_ifindex(sd_netlink_message *m, int *ifindex);
150 : int sd_rtnl_message_link_get_flags(sd_netlink_message *m, unsigned *flags);
151 : int sd_rtnl_message_link_get_type(sd_netlink_message *m, unsigned short *type);
152 :
153 : int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen);
154 : int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen);
155 : int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope);
156 : int sd_rtnl_message_route_set_flags(sd_netlink_message *m, unsigned flags);
157 : int sd_rtnl_message_route_set_table(sd_netlink_message *m, unsigned char table);
158 : int sd_rtnl_message_route_set_type(sd_netlink_message *m, unsigned char type);
159 : int sd_rtnl_message_route_get_flags(sd_netlink_message *m, unsigned *flags);
160 : int sd_rtnl_message_route_get_family(sd_netlink_message *m, int *family);
161 : int sd_rtnl_message_route_set_family(sd_netlink_message *m, int family);
162 : int sd_rtnl_message_route_get_protocol(sd_netlink_message *m, unsigned char *protocol);
163 : int sd_rtnl_message_route_get_scope(sd_netlink_message *m, unsigned char *scope);
164 : int sd_rtnl_message_route_get_tos(sd_netlink_message *m, unsigned char *tos);
165 : int sd_rtnl_message_route_get_table(sd_netlink_message *m, unsigned char *table);
166 : int sd_rtnl_message_route_get_dst_prefixlen(sd_netlink_message *m, unsigned char *dst_len);
167 : int sd_rtnl_message_route_get_src_prefixlen(sd_netlink_message *m, unsigned char *src_len);
168 : int sd_rtnl_message_route_get_type(sd_netlink_message *m, unsigned char *type);
169 :
170 : int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags);
171 : int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state);
172 : int sd_rtnl_message_neigh_get_family(sd_netlink_message *m, int *family);
173 : int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *family);
174 : int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state);
175 : int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags);
176 :
177 : int sd_rtnl_message_new_addrlabel(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifindex, int ifal_family);
178 : int sd_rtnl_message_addrlabel_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen);
179 : int sd_rtnl_message_addrlabel_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen);
180 :
181 : int sd_rtnl_message_new_routing_policy_rule(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifal_family);
182 : int sd_rtnl_message_routing_policy_rule_set_tos(sd_netlink_message *m, unsigned char tos);
183 : int sd_rtnl_message_routing_policy_rule_get_tos(sd_netlink_message *m, unsigned char *tos);
184 : int sd_rtnl_message_routing_policy_rule_set_table(sd_netlink_message *m, unsigned char table);
185 : int sd_rtnl_message_routing_policy_rule_get_table(sd_netlink_message *m, unsigned char *table);
186 : int sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(sd_netlink_message *m, unsigned char len);
187 : int sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(sd_netlink_message *m, unsigned char *len);
188 : int sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(sd_netlink_message *m, unsigned char len);
189 : int sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(sd_netlink_message *m, unsigned char *len);
190 : int sd_rtnl_message_routing_policy_rule_set_rtm_type(sd_netlink_message *m, unsigned char type);
191 : int sd_rtnl_message_routing_policy_rule_get_rtm_type(sd_netlink_message *m, unsigned char *type);
192 : int sd_rtnl_message_routing_policy_rule_set_flags(sd_netlink_message *m, unsigned flags);
193 : int sd_rtnl_message_routing_policy_rule_get_flags(sd_netlink_message *m, unsigned *flags);
194 :
195 : /* genl */
196 : int sd_genl_socket_open(sd_netlink **nl);
197 : int sd_genl_message_new(sd_netlink *nl, sd_genl_family family, uint8_t cmd, sd_netlink_message **m);
198 :
199 : /* slot */
200 : sd_netlink_slot *sd_netlink_slot_ref(sd_netlink_slot *nl);
201 : sd_netlink_slot *sd_netlink_slot_unref(sd_netlink_slot *nl);
202 :
203 : sd_netlink *sd_netlink_slot_get_netlink(sd_netlink_slot *slot);
204 : void *sd_netlink_slot_get_userdata(sd_netlink_slot *slot);
205 : void *sd_netlink_slot_set_userdata(sd_netlink_slot *slot, void *userdata);
206 : int sd_netlink_slot_get_destroy_callback(sd_netlink_slot *slot, sd_netlink_destroy_t *callback);
207 : int sd_netlink_slot_set_destroy_callback(sd_netlink_slot *slot, sd_netlink_destroy_t callback);
208 : int sd_netlink_slot_get_floating(sd_netlink_slot *slot);
209 : int sd_netlink_slot_set_floating(sd_netlink_slot *slot, int b);
210 : int sd_netlink_slot_get_description(sd_netlink_slot *slot, const char **description);
211 : int sd_netlink_slot_set_description(sd_netlink_slot *slot, const char *description);
212 :
213 54 : _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink, sd_netlink_unref);
214 202 : _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink_message, sd_netlink_message_unref);
215 5 : _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink_slot, sd_netlink_slot_unref);
216 :
217 : _SD_END_DECLARATIONS;
218 :
219 : #endif
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