chiark / gitweb /
core: make sure we properly parse ProtectHome= and ProtectSystem=
[elogind.git] / src / network / networkd-veth.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4     This file is part of systemd.
5
6     Copyright 2014 Susant Sahani <susant@redhat.com>
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 #include <arpa/inet.h>
24 #include <net/if.h>
25 #include <linux/veth.h>
26
27 #include "sd-rtnl.h"
28 #include "networkd.h"
29
30
31 static int netdev_fill_veth_rtnl_message(NetDev *netdev, sd_rtnl_message *m) {
32         int r;
33
34         assert(netdev);
35         assert(m);
36
37         r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
38         if (r < 0) {
39                 log_error_netdev(netdev,
40                                  "Could not append IFLA_IFNAME, attribute: %s",
41                                  strerror(-r));
42                 return r;
43         }
44
45         r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
46         if (r < 0) {
47                 log_error_netdev(netdev,
48                                  "Could not append IFLA_LINKINFO attribute: %s",
49                                  strerror(-r));
50                 return r;
51         }
52
53         r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
54                                                  netdev_kind_to_string(netdev->kind));
55         if (r < 0) {
56                 log_error_netdev(netdev,
57                                  "Could not append IFLA_INFO_DATA attribute: %s",
58                                  strerror(-r));
59                 return r;
60         }
61
62         r = sd_rtnl_message_open_container(m, VETH_INFO_PEER);
63         if (r < 0) {
64                 log_error_netdev(netdev,
65                                  "Could not append IFLA_IPTUN_LINK attribute: %s",
66                                  strerror(-r));
67                 return r;
68         }
69
70         if(netdev->ifname_peer) {
71                 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname_peer);
72                 if (r < 0) {
73                         log_error("Failed to add netlink interface name: %s", strerror(-r));
74                         return r;
75                 }
76         }
77
78         r = sd_rtnl_message_close_container(m);
79         if (r < 0) {
80                 log_error_netdev(netdev,
81                                  "Could not append IFLA_INFO_DATA attribute: %s",
82                                  strerror(-r));
83                 return r;
84         }
85
86         r = sd_rtnl_message_close_container(m);
87         if (r < 0) {
88                 log_error_netdev(netdev,
89                                  "Could not append IFLA_LINKINFO attribute: %s",
90                                  strerror(-r));
91                 return r;
92         }
93
94         return r;
95 }
96
97 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback) {
98         _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
99         int r;
100
101         assert(netdev);
102         assert(netdev->ifname);
103         assert(netdev->manager);
104         assert(netdev->manager->rtnl);
105
106         r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
107         if (r < 0) {
108                 log_error_netdev(netdev,
109                                  "Could not allocate RTM_NEWLINK message: %s",
110                                  strerror(-r));
111                 return r;
112         }
113
114         if(netdev->kind != NETDEV_KIND_VETH)
115                 return -ENOTSUP;
116
117         r = netdev_fill_veth_rtnl_message(netdev, m);
118         if(r < 0)
119                 return r;
120
121         r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, netdev, 0, NULL);
122         if (r < 0) {
123                 log_error_netdev(netdev,
124                                  "Could not send rtnetlink message: %s", strerror(-r));
125                 return r;
126         }
127
128         log_debug_netdev(netdev, "Creating veth netdev: %s",
129                          netdev_kind_to_string(netdev->kind));
130
131         netdev->state = NETDEV_STATE_CREATING;
132
133         return 0;
134 }