/*

  * Support routine for configuring link layer address

  */
 

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #elif defined(_MSC_VER)
 #include "config-msvc.h"
 #endif
 

 #include "syshead.h"
 #include "error.h"
 #include "misc.h"

 #include "run_command.h"

 int
 set_lladdr(const char *ifname, const char *lladdr,
            const struct env_set *es)

 {

     struct argv argv = argv_new();
     int r;
 
     if (!ifname || !lladdr)
     {
         return -1;
     }

 
 #if defined(TARGET_LINUX)

 #ifdef ENABLE_IPROUTE

     argv_printf(&argv,
                 "%s link set addr %s dev %s",
                 iproute_path, lladdr, ifname);

 #else

     argv_printf(&argv,
                 "%s %s hw ether %s",
                 IFCONFIG_PATH,
                 ifname, lladdr);

 #endif
 #elif defined(TARGET_SOLARIS)

     argv_printf(&argv,
                 "%s %s ether %s",
                 IFCONFIG_PATH,
                 ifname, lladdr);

 #elif defined(TARGET_OPENBSD)

     argv_printf(&argv,
                 "%s %s lladdr %s",
                 IFCONFIG_PATH,
                 ifname, lladdr);

 #elif defined(TARGET_DARWIN)

     argv_printf(&argv,
                 "%s %s lladdr %s",
                 IFCONFIG_PATH,
                 ifname, lladdr);

 #elif defined(TARGET_FREEBSD)

     argv_printf(&argv,
                 "%s %s ether %s",
                 IFCONFIG_PATH,
                 ifname, lladdr);
 #else  /* if defined(TARGET_LINUX) */
     msg(M_WARN, "Sorry, but I don't know how to configure link layer addresses on this operating system.");
     return -1;
 #endif /* if defined(TARGET_LINUX) */

     argv_msg(M_INFO, &argv);
     r = openvpn_execve_check(&argv, es, M_WARN, "ERROR: Unable to set link layer address.");
     if (r)
     {
         msg(M_INFO, "TUN/TAP link layer address set to %s", lladdr);
     }

     argv_reset(&argv);
     return r;

 }