X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Flinux%2Fdevice.c;h=e896f5473e30ae31dcdb2e520a430aa33e931051;hp=02d7a7a5c843350296cb0d4f5ac650d5013cea2d;hb=4252ae83a43ea81382ce71ba614e2d1655f2e189;hpb=c0a3f67a5d66088aaf526f1461986f9e86d5dd1f

diff --git a/src/linux/device.c b/src/linux/device.c
index 02d7a7a5..e896f547 100644
--- a/src/linux/device.c
+++ b/src/linux/device.c
@@ -1,7 +1,7 @@
 /*
     device.c -- Interaction with Linux ethertap and tun/tap device
-    Copyright (C) 2001 Ivo Timmermans <itimmermans@bigfoot.com>,
-                  2001 Guus Sliepen <guus@sliepen.warande.net>
+    Copyright (C) 2001-2002 Ivo Timmermans <itimmermans@bigfoot.com>,
+                  2001-2002 Guus Sliepen <guus@sliepen.warande.net>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,12 +17,13 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: device.c,v 1.1.2.4 2001/10/31 12:50:24 guus Exp $
+    $Id: device.c,v 1.1.2.8 2002/03/24 16:36:56 guus Exp $
 */
 
 #include "config.h"
 
 #include <stdio.h>
+#include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
@@ -63,7 +64,7 @@ char *device_info;
 int device_total_in = 0;
 int device_total_out = 0;
 
-subnet_t mymac;
+extern subnet_t mymac;
 
 /*
   open the local ethertap device
@@ -77,11 +78,15 @@ cp
     device = DEFAULT_DEVICE;
 
   if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
+#ifdef HAVE_TUNTAP
     interface = netname;
+#else
+    interface = rindex(device, '/')?rindex(device, '/')+1:device;
+#endif
 cp
   if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0)
     {
-      syslog(LOG_ERR, _("Could not open %s: %m"), device);
+      syslog(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
       return -1;
     }
 cp
@@ -125,6 +130,7 @@ cp
     {
       device_info = _("Linux ethertap device");
       device_type = DEVICE_TYPE_ETHERTAP;
+      interface = rindex(device, '/')?rindex(device, '/')+1:device;
     }
 
   syslog(LOG_INFO, _("%s is a %s"), device, device_info);
@@ -150,7 +156,7 @@ cp
     {
       if((lenin = read(device_fd, packet->data, MTU)) <= 0)
         {
-          syslog(LOG_ERR, _("Error while reading from %s %s: %m"), device_info, device);
+          syslog(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno));
           return -1;
         }
 
@@ -158,11 +164,9 @@ cp
     }
   else /* ethertap */
     {
-      struct iovec vector[2] = {{&packet->len, 2}, {packet->data, MTU}};
-
-      if((lenin = readv(device_fd, vector, 2)) <= 0)
+      if((lenin = read(device_fd, packet->data - 2, MTU + 2)) <= 0)
         {
-          syslog(LOG_ERR, _("Error while reading from %s %s: %m"), device_info, device);
+          syslog(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno));
           return -1;
         }
 
@@ -191,17 +195,16 @@ cp
     {
       if(write(device_fd, packet->data, packet->len) < 0)
         {
-          syslog(LOG_ERR, _("Can't write to %s %s: %m"), device_info, device);
+          syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno));
           return -1;
         }
     }
   else/* ethertap */
     {
-      struct iovec vector[2] = {{&packet->len, 2}, {packet->data, MTU}};
-
-      if(writev(device_fd, vector, 2) < 0)
+      *(short int *)(packet->data - 2) = packet->len;
+      if(write(device_fd, packet->data - 2, packet->len + 2) < 0)
         {
-          syslog(LOG_ERR, _("Can't write to %s %s: %m"), device_info, device);
+          syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno));
           return -1;
         }
     }