| 1 | /* |
1 | /* |
| 2 | device-linux.C -- Interaction with Linux tun/tap device |
2 | device-linux.C -- Interaction with Linux tun/tap device |
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3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
| 3 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
| 4 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify |
| 5 | 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 |
| 6 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
10 | (at your option) any later version. |
| 8 | |
11 | |
| 9 | 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, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
15 | GNU General Public License for more details. |
| 13 | |
16 | |
| 14 | 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 |
| 15 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
| 16 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
20 | */ |
| 18 | |
21 | |
| 19 | #include "config.h" |
22 | #include "config.h" |
| 20 | |
23 | |
| 21 | #include <cstdio> |
24 | #include <cstdio> |
| … | |
… | |
| 42 | #include "gettext.h" |
45 | #include "gettext.h" |
| 43 | |
46 | |
| 44 | #include "conf.h" |
47 | #include "conf.h" |
| 45 | |
48 | |
| 46 | #if TEST_ETHEREMU |
49 | #if TEST_ETHEREMU |
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50 | # define IF_istun |
| 47 | # include "ether_emu.C" |
51 | # include "ether_emu.C" |
| 48 | #endif |
52 | #endif |
| 49 | |
53 | |
| 50 | const char * |
54 | const char * |
| 51 | tap_device::info () |
55 | tap_device::info () |
| 52 | { |
56 | { |
| 53 | return _("Linux tun/tap device"); |
57 | return _("Linux tun/tap device"); |
| 54 | } |
58 | } |
| 55 | |
59 | |
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60 | const char * |
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61 | tap_device::if_up () |
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62 | { |
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63 | return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; |
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64 | } |
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65 | |
| 56 | tap_device::tap_device () |
66 | tap_device::tap_device () |
| 57 | { |
67 | { |
| 58 | struct ifreq ifr; |
68 | struct ifreq ifr; |
| 59 | |
69 | |
| 60 | device = DEFAULT_DEVICE; |
70 | device = (char *)DEFAULT_DEVICE; |
| 61 | |
71 | |
| 62 | fd = open (device, O_RDWR); |
72 | fd = open (device, O_RDWR); |
| 63 | |
73 | |
| 64 | if (fd < 0) |
74 | if (fd < 0) |
| 65 | { |
75 | { |
| 66 | slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); |
76 | slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); |
| 67 | exit (1); |
77 | exit (EXIT_FAILURE); |
| 68 | } |
78 | } |
| 69 | |
79 | |
| 70 | memset (&ifr, 0, sizeof (ifr)); |
80 | memset (&ifr, 0, sizeof (ifr)); |
| 71 | #if TEST_ETHEREMU |
81 | #if TEST_ETHEREMU |
| 72 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; |
82 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; |
| … | |
… | |
| 84 | strncpy (ifrname, ifr.ifr_name, IFNAMSIZ); |
94 | strncpy (ifrname, ifr.ifr_name, IFNAMSIZ); |
| 85 | ifrname [IFNAMSIZ] = 0; |
95 | ifrname [IFNAMSIZ] = 0; |
| 86 | } |
96 | } |
| 87 | else |
97 | else |
| 88 | { |
98 | { |
| 89 | slog (L_CRIT, _("unable to configure tun/tap interface: %s"), strerror (errno)); |
99 | slog (L_CRIT, _("unable to configure tun/tap interface, exiting: %s"), strerror (errno)); |
| 90 | exit (1); |
100 | exit (EXIT_FAILURE); |
| 91 | } |
101 | } |
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102 | |
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103 | #if 0 |
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104 | does not work |
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105 | id2mac (THISNODE->id, &ifr.ifr_hwaddr.sa_data); |
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106 | if (ioctl (fd, SIOCSIFHWADDR, &ifr)) |
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107 | { |
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108 | slog (L_ERR, _("cannot set MAC address for device %s, exiting: %s"), ifrname, strerror (errno)); |
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109 | exit (EXIT_FAILURE); |
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110 | } |
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111 | #endif |
| 92 | |
112 | |
| 93 | if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) |
113 | if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) |
| 94 | slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); |
114 | slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); |
| 95 | |
115 | |
| 96 | slog (L_DEBUG, _("%s is a %s"), device, info ()); |
116 | slog (L_DEBUG, _("%s is a %s"), device, info ()); |
