dist/ipf/lib/getifname.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2002-2004 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  * Id: getifname.c,v 1.5.2.3 2006/07/14 06:12:24 darrenr Exp
   9  */
  10
  11 #include "ipf.h"
  12
  13 #include "kmem.h"
  14
  15 /*
  16  * Given a pointer to an interface in the kernel, return a pointer to a
  17  * string which is the interface name.
  18  */
  19 #if 0
  20 char *getifname(ptr)
  21 struct ifnet *ptr;
  22 {
  23 #if SOLARIS || defined(__hpux)
  24 # if SOLARIS
  25 #  include <sys/mutex.h>
  26 #  include <sys/condvar.h>
  27 # endif
  28 # ifdef __hpux
  29 #  include "compat.h"
  30 # endif
  31 # include "../pfil/qif.h"
  32         char *ifname;
  33         qif_t qif;
  34
  35         if ((void *)ptr == (void *)-1)
  36                 return "!";
  37         if (ptr == NULL)
  38                 return "-";
  39
  40         if (kmemcpy((char *)&qif, (u_long)ptr, sizeof(qif)) == -1)
  41                 return "X";
  42         ifname = strdup(qif.qf_name);
  43         if ((ifname != NULL) && (*ifname == '\0')) {
  44                 free(ifname);
  45                 return "!";
  46         }
  47         return ifname;
  48 #else
  49 # if defined(NetBSD) && (NetBSD >= 199905) && (NetBSD < 1991011) || \
  50     defined(__OpenBSD__) || \
  51     (defined(__FreeBSD__) && (__FreeBSD_version >= 501113))
  52 #else
  53         char buf[32];
  54         int len;
  55 # endif
  56         struct ifnet netif;
  57
  58         if ((void *)ptr == (void *)-1)
  59                 return "!";
  60         if (ptr == NULL)
  61                 return "-";
  62
  63         if (kmemcpy((char *)&netif, (u_long)ptr, sizeof(netif)) == -1)
  64                 return "X";
  65 # if defined(NetBSD) && (NetBSD >= 199905) && (NetBSD < 1991011) || \
  66     defined(__OpenBSD__) || defined(linux) || \
  67     (defined(__FreeBSD__) && (__FreeBSD_version >= 501113))
  68         return strdup(netif.if_xname);
  69 # else
  70         if (kstrncpy(buf, (u_long)netif.if_name, sizeof(buf)) == -1)
  71                 return "X";
  72         if (netif.if_unit < 10)
  73                 len = 2;
  74         else if (netif.if_unit < 1000)
  75                 len = 3;
  76         else if (netif.if_unit < 10000)
  77                 len = 4;
  78         else
  79                 len = 5;
  80         buf[sizeof(buf) - len] = '\0';
  81         sprintf(buf + strlen(buf), "%d", netif.if_unit % 10000);
  82         return strdup(buf);
  83 # endif
  84 #endif
  85 }
  86 #else
  87 char *getifname(ptr)
  88 struct ifnet *ptr;
  89 {
  90         return "X";
  91 }
  92 #endif