1 | /* Test interface name <-> index conversions. |
2 | Copyright (C) 1997-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <stdio.h> |
21 | #include <stdlib.h> |
22 | #include <string.h> |
23 | #include <net/if.h> |
24 | |
25 | static int |
26 | do_test (void) |
27 | { |
28 | int failures = 0; |
29 | struct if_nameindex *idx = if_nameindex (), *p; |
30 | if (idx == NULL) |
31 | { |
32 | if (errno != ENOSYS) |
33 | { |
34 | printf (format: "Couldn't get any interfaces.\n" ); |
35 | exit (1); |
36 | } |
37 | /* The function is simply not implemented. */ |
38 | exit (0); |
39 | } |
40 | |
41 | printf (format: "Idx Name | Idx Name\n" ); |
42 | |
43 | for (p = idx; p->if_index || p->if_name; ++p) |
44 | { |
45 | char buf[IFNAMSIZ]; |
46 | unsigned int ni; |
47 | int result; |
48 | printf (format: "%3d %15s | " , p->if_index, p->if_name); |
49 | printf (format: "%3d" , ni = if_nametoindex (p->if_name)); |
50 | printf (format: "%15s" , if_indextoname (p->if_index, buf)); |
51 | result = (ni != p->if_index || (strcmp (buf, p->if_name))); |
52 | if (ni == p->if_index) |
53 | /* We have to make sure that this is not an alias with the |
54 | same interface number. */ |
55 | if (p->if_index == if_nametoindex (buf)) |
56 | result = 0; |
57 | printf (format: "%10s" , result ? "fail" : "okay" ); |
58 | printf (format: "\n" ); |
59 | failures += result; |
60 | } |
61 | if_freenameindex (idx); |
62 | return failures ? 1 : 0; |
63 | } |
64 | |
65 | #define TEST_FUNCTION do_test () |
66 | #include "../test-skeleton.c" |
67 | |