getifname.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
#include "ipf.h"
#include "qif.h"
#include "kmem.h"
/*
* Given a pointer to an interface in the kernel, return a pointer to a
* string which is the interface name.
*/
char *getifname(ptr)
struct ifnet *ptr;
{
#if SOLARIS
char *ifname;
s_ill_t ill;
if ((void *)ptr == (void *)-1)
return "!";
if (ptr == NULL)
return "-";
if (kmemcpy((char *)&ill, (u_long)ptr, sizeof(ill)) == -1)
return "X";
ifname = malloc(sizeof(ill.ill_name) + 1);
strncpy(ifname, ill.ill_name, sizeof(ill.ill_name));
ifname[sizeof(ill.ill_name)] = '\0';
return ifname;
#else
# if defined(NetBSD) && (NetBSD >= 199905) && (NetBSD < 1991011) || \
defined(__OpenBSD__)
#else
char buf[32];
int len;
# endif
struct ifnet netif;
if ((void *)ptr == (void *)-1)
return "!";
if (ptr == NULL)
return "-";
if (kmemcpy((char *)&netif, (u_long)ptr, sizeof(netif)) == -1)
return "X";
# if defined(NetBSD) && (NetBSD >= 199905) && (NetBSD < 1991011) || \
defined(__OpenBSD__)
return strdup(netif.if_xname);
# else
if (kstrncpy(buf, (u_long)netif.if_name, sizeof(buf)) == -1)
return "X";
if (netif.if_unit < 10)
len = 2;
else if (netif.if_unit < 1000)
len = 3;
else if (netif.if_unit < 10000)
len = 4;
else
len = 5;
buf[sizeof(buf) - len] = '\0';
sprintf(buf + strlen(buf), "%d", netif.if_unit % 10000);
return strdup(buf);
# endif
#endif
}