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/* Test interface name <-> index conversions.
Copyright (C) 1997, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <Philip.Blundell@pobox.com>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <net/if.h>
int
main (void)
{
int failures = 0;
struct if_nameindex *idx = if_nameindex (), *p;
if (idx == NULL)
{
if (errno != ENOSYS)
{
printf ("Couldn't get any interfaces.\n");
exit (1);
}
/* The function is simply not implemented. */
exit (0);
}
printf ("Idx Name | Idx Name\n");
for (p = idx; p->if_index || p->if_name; ++p)
{
char buf[IFNAMSIZ];
unsigned int ni;
int result;
printf ("%3d %15s | ", p->if_index, p->if_name);
printf ("%3d", ni = if_nametoindex (p->if_name));
printf ("%15s", if_indextoname (p->if_index, buf));
result = (ni != p->if_index || (strcmp (buf, p->if_name)));
if (ni == p->if_index)
/* We have to make sure that this is not an alias with the
same interface number. */
if (p->if_index == if_nametoindex (buf))
result = 0;
printf ("%10s", result ? "fail" : "okay");
printf ("\n");
failures += result;
}
if_freenameindex (idx);
return failures ? 1 : 0;
}
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