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