release/src/router/openvpn/lladdr.c

   1 /*
   2  * Support routine for configuring link layer address
   3  */
   4
   5 #include "syshead.h"
   6 #include "error.h"
   7 #include "misc.h"
   8
   9 int set_lladdr(const char *ifname, const char *lladdr,
  10                 const struct env_set *es)
  11 {
  12   struct argv argv = argv_new ();
  13   int r;
  14
  15   if (!ifname || !lladdr)
  16     return -1;
  17
  18 #if defined(TARGET_LINUX)
  19 #ifdef CONFIG_FEATURE_IPROUTE
  20   argv_printf (&argv,
  21                     "%s link set addr %s dev %s",
  22                     iproute_path, lladdr, ifname);
  23 #else
  24   argv_printf (&argv,
  25                     "%s %s hw ether %s",
  26                     IFCONFIG_PATH,
  27                     ifname, lladdr);
  28 #endif
  29 #elif defined(TARGET_SOLARIS)
  30   argv_printf (&argv,
  31                     "%s %s ether %s",
  32                     IFCONFIG_PATH,
  33                     ifname, lladdr);
  34 #elif defined(TARGET_OPENBSD)
  35   argv_printf (&argv,
  36                     "%s %s lladdr %s",
  37                     IFCONFIG_PATH,
  38                     ifname, lladdr);
  39 #elif defined(TARGET_DARWIN)
  40   argv_printf (&argv,
  41                     "%s %s lladdr %s",
  42                     IFCONFIG_PATH,
  43                     ifname, lladdr);
  44 #elif defined(TARGET_FREEBSD)
  45   argv_printf (&argv,
  46                     "%s %s ether %s",
  47                     IFCONFIG_PATH,
  48                     ifname, lladdr);
  49 #else
  50       msg (M_WARN, "Sorry, but I don't know how to configure link layer addresses on this operating system.");
  51       return -1;
  52 #endif
  53
  54   argv_msg (M_INFO, &argv);
  55   r = openvpn_execve_check (&argv, es, M_WARN, "ERROR: Unable to set link layer address.");
  56   if (r)
  57     msg (M_INFO, "TUN/TAP link layer address set to %s", lladdr);
  58
  59   argv_reset (&argv);
  60   return r;
  61 }