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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 | ||
a33dece5 | 22 | #include <linux/rtnetlink.h> |
d8921c6d TG |
23 | #include <netinet/ether.h> |
24 | ||
25 | #include "sd-rtnl.h" | |
26 | ||
27 | #include "rtnl-util.h" | |
28 | ||
3e137a1b TG |
29 | int rtnl_set_link_name(sd_rtnl *rtnl, int ifindex, const char *name) { |
30 | _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message = NULL; | |
d8921c6d TG |
31 | int r; |
32 | ||
33 | assert(rtnl); | |
34 | assert(ifindex > 0); | |
3e137a1b | 35 | assert(name); |
d8921c6d TG |
36 | |
37 | r = sd_rtnl_message_link_new(RTM_NEWLINK, ifindex, 0, 0, &message); | |
38 | if (r < 0) | |
39 | return r; | |
40 | ||
3e137a1b TG |
41 | r = sd_rtnl_message_append(message, IFLA_IFNAME, name); |
42 | if (r < 0) | |
43 | return r; | |
d8921c6d | 44 | |
fe4824e0 | 45 | r = sd_rtnl_call(rtnl, message, 0, NULL); |
3e137a1b TG |
46 | if (r < 0) |
47 | return r; | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | int rtnl_set_link_properties(sd_rtnl *rtnl, int ifindex, const struct ether_addr *mac, unsigned mtu) { | |
53 | _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message = NULL; | |
54 | bool need_update = false; | |
55 | int r; | |
56 | ||
57 | assert(rtnl); | |
58 | assert(ifindex > 0); | |
59 | ||
60 | if (!mac && mtu == 0) | |
61 | return 0; | |
62 | ||
63 | r = sd_rtnl_message_link_new(RTM_NEWLINK, ifindex, 0, 0, &message); | |
64 | if (r < 0) | |
65 | return r; | |
d8921c6d TG |
66 | |
67 | if (mac) { | |
68 | r = sd_rtnl_message_append(message, IFLA_ADDRESS, mac); | |
69 | if (r < 0) | |
70 | return r; | |
71 | ||
72 | need_update = true; | |
73 | } | |
74 | ||
75 | if (mtu > 0) { | |
76 | r = sd_rtnl_message_append(message, IFLA_MTU, &mtu); | |
77 | if (r < 0) | |
78 | return r; | |
79 | ||
80 | need_update = true; | |
81 | } | |
82 | ||
83 | if (need_update) { | |
fe4824e0 | 84 | r = sd_rtnl_call(rtnl, message, 0, NULL); |
d8921c6d TG |
85 | if (r < 0) |
86 | return r; | |
87 | } | |
88 | ||
89 | return 0; | |
90 | } |