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99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* Test of <net/if.h> functions.
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Copyright (C) 2010-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Simon Josefsson <simon@josefsson.org>, 2010. */
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#include <config.h>
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#include <net/if.h>
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/* We do not yet have replacements for if_* functions on systems that
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lack a native <net/if.h>. */
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#if HAVE_NET_IF_H && HAVE_IF_NAMEINDEX
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# include "signature.h"
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SIGNATURE_CHECK (if_freenameindex, void, (struct if_nameindex *));
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SIGNATURE_CHECK (if_indextoname, char *, (unsigned int, char *));
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SIGNATURE_CHECK (if_nameindex, struct if_nameindex *, (void));
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SIGNATURE_CHECK (if_nametoindex, unsigned int, (const char *));
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#endif
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#include <stddef.h> /* NULL */
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#include <stdio.h> /* fprintf */
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int
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main (int argc, char *argv[])
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{
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#if HAVE_NET_IF_H && HAVE_IF_NAMEINDEX
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struct if_nameindex *ifnp, *p;
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p = ifnp = if_nameindex ();
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if (ifnp == NULL)
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{
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fputs ("if_nameindex returned NULL\n", stderr);
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return 1;
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}
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while (p->if_index)
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{
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unsigned int idx;
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char buf[IF_NAMESIZE];
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char *q;
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if (argc > 1)
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printf ("index %d name %s\n", p->if_index, p->if_name);
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idx = if_nametoindex (p->if_name);
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if (idx != p->if_index)
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{
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fprintf (stderr, "if_nametoindex (%s) = %d != %d\n",
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p->if_name, idx, p->if_index);
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return 1;
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}
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q = if_indextoname (p->if_index, buf);
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if (q == NULL)
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{
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fprintf (stderr, "if_indextoname (%d) returned NULL\n", p->if_index);
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return 1;
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}
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if (q != buf)
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{
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fprintf (stderr, "if_indextoname (%d) buffer mismatch?\n",
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p->if_index);
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return 1;
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}
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if (strcmp (p->if_name, q) != 0)
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{
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fprintf (stderr, "if_indextoname (%s) = %s ?!\n", p->if_name, q);
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return 1;
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}
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p++;
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}
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if_freenameindex (ifnp);
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#endif /* HAVE_NET_IF_H */
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#if !HAVE_NET_IF_H || HAVE_IF_NAMEINDEX
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{
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static struct if_nameindex ni;
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return !IF_NAMESIZE + ni.if_index + !!ni.if_name;
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}
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#else
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return 0;
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#endif
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}
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