1 /* Test of <net/if.h> functions.
2 Copyright (C) 2010-2012 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Simon Josefsson <simon@josefsson.org>, 2010. */
23 static struct if_nameindex ni;
25 /* We do not yet have replacements for if_* functions on systems that
26 lack a native <net/if.h>. */
28 # include "signature.h"
29 SIGNATURE_CHECK (if_freenameindex, void, (struct if_nameindex *));
30 SIGNATURE_CHECK (if_indextoname, char *, (unsigned int, char *));
31 SIGNATURE_CHECK (if_nameindex, struct if_nameindex *, (void));
32 SIGNATURE_CHECK (if_nametoindex, unsigned int, (const char *));
35 #include <stddef.h> /* NULL */
36 #include <stdio.h> /* fprintf */
39 main (int argc, char *argv[])
42 struct if_nameindex *ifnp, *p;
44 p = ifnp = if_nameindex ();
47 fputs ("if_nameindex returned NULL\n", stderr);
54 char buf[IF_NAMESIZE];
58 printf ("index %d name %s\n", p->if_index, p->if_name);
60 idx = if_nametoindex (p->if_name);
61 if (idx != p->if_index)
63 fprintf (stderr, "if_nametoindex (%s) = %d != %d\n",
64 p->if_name, idx, p->if_index);
68 q = if_indextoname (p->if_index, buf);
71 fprintf (stderr, "if_indextoname (%d) returned NULL\n", p->if_index);
76 fprintf (stderr, "if_indextoname (%d) buffer mismatch?\n",
80 if (strcmp (p->if_name, q) != 0)
82 fprintf (stderr, "if_indextoname (%s) = %s ?!\n", p->if_name, q);
89 if_freenameindex (ifnp);
90 #endif /* HAVE_NET_IF_H */
92 return !IF_NAMESIZE + ni.if_index + !!ni.if_name;