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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright (C) 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | ||
24 | #include "sd-rtnl.h" | |
25 | ||
26 | #include "rtnl-util.h" | |
27 | #include "rtnl-internal.h" | |
28 | ||
5eef597e | 29 | int rtnl_set_link_name(sd_rtnl **rtnl, int ifindex, const char *name) { |
60f067b4 JS |
30 | _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL; |
31 | int r; | |
32 | ||
33 | assert(rtnl); | |
34 | assert(ifindex > 0); | |
35 | assert(name); | |
36 | ||
5eef597e MP |
37 | if (!*rtnl) { |
38 | r = sd_rtnl_open(rtnl, 0); | |
39 | if (r < 0) | |
40 | return r; | |
41 | } | |
42 | ||
43 | r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex); | |
60f067b4 JS |
44 | if (r < 0) |
45 | return r; | |
46 | ||
47 | r = sd_rtnl_message_append_string(message, IFLA_IFNAME, name); | |
48 | if (r < 0) | |
49 | return r; | |
50 | ||
5eef597e | 51 | r = sd_rtnl_call(*rtnl, message, 0, NULL); |
60f067b4 JS |
52 | if (r < 0) |
53 | return r; | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
5eef597e | 58 | int rtnl_set_link_properties(sd_rtnl **rtnl, int ifindex, const char *alias, |
60f067b4 JS |
59 | const struct ether_addr *mac, unsigned mtu) { |
60 | _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL; | |
60f067b4 JS |
61 | int r; |
62 | ||
63 | assert(rtnl); | |
64 | assert(ifindex > 0); | |
65 | ||
66 | if (!alias && !mac && mtu == 0) | |
67 | return 0; | |
68 | ||
5eef597e MP |
69 | if (!*rtnl) { |
70 | r = sd_rtnl_open(rtnl, 0); | |
71 | if (r < 0) | |
72 | return r; | |
73 | } | |
74 | ||
75 | r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex); | |
60f067b4 JS |
76 | if (r < 0) |
77 | return r; | |
78 | ||
79 | if (alias) { | |
80 | r = sd_rtnl_message_append_string(message, IFLA_IFALIAS, alias); | |
81 | if (r < 0) | |
82 | return r; | |
60f067b4 JS |
83 | } |
84 | ||
85 | if (mac) { | |
86 | r = sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, mac); | |
87 | if (r < 0) | |
88 | return r; | |
60f067b4 JS |
89 | } |
90 | ||
91 | if (mtu > 0) { | |
92 | r = sd_rtnl_message_append_u32(message, IFLA_MTU, mtu); | |
93 | if (r < 0) | |
94 | return r; | |
60f067b4 JS |
95 | } |
96 | ||
5eef597e MP |
97 | r = sd_rtnl_call(*rtnl, message, 0, NULL); |
98 | if (r < 0) | |
99 | return r; | |
60f067b4 JS |
100 | |
101 | return 0; | |
102 | } | |
103 | ||
104 | int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_rtnl_message **ret) { | |
105 | struct nlmsgerr *err; | |
106 | int r; | |
107 | ||
108 | assert(error <= 0); | |
109 | ||
110 | r = message_new(NULL, ret, NLMSG_SPACE(sizeof(struct nlmsgerr))); | |
111 | if (r < 0) | |
112 | return r; | |
113 | ||
114 | (*ret)->hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr)); | |
115 | (*ret)->hdr->nlmsg_type = NLMSG_ERROR; | |
116 | (*ret)->hdr->nlmsg_seq = serial; | |
117 | ||
118 | err = NLMSG_DATA((*ret)->hdr); | |
119 | ||
120 | err->error = error; | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | bool rtnl_message_type_is_route(uint16_t type) { | |
126 | switch (type) { | |
127 | case RTM_NEWROUTE: | |
128 | case RTM_GETROUTE: | |
129 | case RTM_DELROUTE: | |
130 | return true; | |
131 | default: | |
132 | return false; | |
133 | } | |
134 | } | |
135 | ||
136 | bool rtnl_message_type_is_link(uint16_t type) { | |
137 | switch (type) { | |
138 | case RTM_NEWLINK: | |
139 | case RTM_SETLINK: | |
140 | case RTM_GETLINK: | |
141 | case RTM_DELLINK: | |
142 | return true; | |
143 | default: | |
144 | return false; | |
145 | } | |
146 | } | |
147 | ||
148 | bool rtnl_message_type_is_addr(uint16_t type) { | |
149 | switch (type) { | |
150 | case RTM_NEWADDR: | |
151 | case RTM_GETADDR: | |
152 | case RTM_DELADDR: | |
153 | return true; | |
154 | default: | |
155 | return false; | |
156 | } | |
157 | } | |
5eef597e MP |
158 | |
159 | int rtnl_log_parse_error(int r) { | |
160 | log_error("Failed to parse netlink message: %s", strerror(-r)); | |
161 | return r; | |
162 | } | |
163 | ||
164 | int rtnl_log_create_error(int r) { | |
165 | log_error("Failed to create netlink message: %s", strerror(-r)); | |
166 | return r; | |
167 | } |