1 | /* Copyright (C) 2004-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library 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 GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <limits.h> |
20 | #include <stdio.h> |
21 | #include <string.h> |
22 | #include <net/if.h> |
23 | |
24 | |
25 | static int |
26 | do_test (void) |
27 | { |
28 | char buf[IF_NAMESIZE]; |
29 | /* Index 0 is always invalid (see RFC 3493). */ |
30 | char *cp = if_indextoname (0, buf); |
31 | if (cp != NULL) |
32 | { |
33 | printf (format: "invalid index returned result \"%s\"\n" , cp); |
34 | return 1; |
35 | } |
36 | else if (errno != ENXIO) |
37 | { |
38 | int err = errno; |
39 | char errbuf1[256]; |
40 | char errbuf2[256]; |
41 | |
42 | printf (format: "errno = %d (%s), expected %d (%s)\n" , |
43 | err, strerror_r (errnum: err, buf: errbuf1, buflen: sizeof (errbuf1)), |
44 | ENXIO, strerror_r (ENXIO, buf: errbuf2, buflen: sizeof (errbuf2))); |
45 | return 1; |
46 | } |
47 | |
48 | return 0; |
49 | } |
50 | |
51 | #define TEST_FUNCTION do_test () |
52 | #include "../test-skeleton.c" |
53 | |