| 1 | /* |
1 | /* |
| 2 | device-linux.C -- Interaction with Linux tun/tap device |
2 | device-linux.C -- Interaction with Linux tun/tap device |
| 3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
| 4 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
| 5 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
10 | (at your option) any later version. |
| 9 | |
11 | |
| 10 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
15 | GNU General Public License for more details. |
| 14 | |
16 | |
| 15 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
| 17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
20 | */ |
| 19 | |
21 | |
| 20 | #include "config.h" |
22 | #include "config.h" |
| 21 | |
23 | |
| … | |
… | |
| 38 | #else |
40 | #else |
| 39 | #include <linux/if_tun.h> |
41 | #include <linux/if_tun.h> |
| 40 | #endif |
42 | #endif |
| 41 | #define DEFAULT_DEVICE "/dev/net/tun" |
43 | #define DEFAULT_DEVICE "/dev/net/tun" |
| 42 | |
44 | |
| 43 | #include "gettext.h" |
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| 44 | |
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| 45 | #include "conf.h" |
45 | #include "conf.h" |
| 46 | |
46 | |
| 47 | #if TEST_ETHEREMU |
47 | #if TEST_ETHEREMU |
| 48 | # define IF_istun |
48 | # define IF_istun |
| 49 | # include "ether_emu.C" |
49 | # include "ether_emu.C" |
| … | |
… | |
| 64 | fd = open (device, O_RDWR); |
64 | fd = open (device, O_RDWR); |
| 65 | |
65 | |
| 66 | if (fd < 0) |
66 | if (fd < 0) |
| 67 | { |
67 | { |
| 68 | slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); |
68 | slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); |
| 69 | exit (1); |
69 | exit (EXIT_FAILURE); |
| 70 | } |
70 | } |
| 71 | |
71 | |
| 72 | memset (&ifr, 0, sizeof (ifr)); |
72 | memset (&ifr, 0, sizeof (ifr)); |
| 73 | #if TEST_ETHEREMU |
73 | #if TEST_ETHEREMU |
| 74 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; |
74 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; |
| … | |
… | |
| 87 | ifrname [IFNAMSIZ] = 0; |
87 | ifrname [IFNAMSIZ] = 0; |
| 88 | } |
88 | } |
| 89 | else |
89 | else |
| 90 | { |
90 | { |
| 91 | slog (L_CRIT, _("unable to configure tun/tap interface: %s"), strerror (errno)); |
91 | slog (L_CRIT, _("unable to configure tun/tap interface: %s"), strerror (errno)); |
| 92 | exit (1); |
92 | exit (EXIT_FAILURE); |
| 93 | } |
93 | } |
| 94 | |
94 | |
| 95 | if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) |
95 | if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) |
| 96 | slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); |
96 | slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); |
| 97 | |
97 | |
