projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5a6ae8da UD |
1 | /* Copyright (C) 2004 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2004. | |
| 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, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 19 | ||
| 20 | #include <errno.h> | |
| 21 | #include <limits.h> | |
| 22 | #include <stdio.h> | |
| 23 | #include <net/if.h> | |
| 24 | ||
| 25 | ||
| 26 | static int | |
| 27 | do_test (void) | |
| 28 | { | |
| 29 | /* Get list of all interfaces. */ | |
| 30 | struct if_nameindex *il = if_nameindex (); | |
| 31 | if (il == NULL) | |
| 32 | { | |
| 33 | puts ("cannot get interface list, maybe the system does not support networking; bailing out"); | |
| 34 | return 0; | |
| 35 | } | |
| 36 | ||
| 37 | /* Determine the highest interface number. */ | |
| 38 | unsigned int max = 0; | |
| 39 | for (int cnt = 0; il[cnt].if_name != NULL; ++cnt) | |
| 40 | if (il[cnt].if_index > max) | |
| 41 | max = il[cnt].if_index; | |
| 42 | ||
| 43 | /* Use the next higher value (if possible). */ | |
| 44 | if (max == UINT_MAX) | |
| 45 | { | |
| 46 | puts ("highest index too high; need more clever way to determine test index"); | |
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | char buf[IF_NAMESIZE]; | |
| 51 | char *cp = if_indextoname (max + 1, buf); | |
| 52 | if (cp != NULL) | |
| 53 | { | |
| 54 | printf ("invalid index returned result \"%s\"\n", cp); | |
| 55 | return 1; | |
| 56 | } | |
| 57 | else if (errno != ENXIO) | |
| 58 | { | |
| 59 | int err = errno; | |
| 60 | char errbuf1[256]; | |
| 61 | char errbuf2[256]; | |
| 62 | ||
| 63 | printf ("errno = %d (%s), expected %d (%s)\n", | |
| 64 | err, strerror_r (err, errbuf1, sizeof (errbuf1)), | |
| 65 | ENXIO, strerror_r (ENXIO, errbuf2, sizeof (errbuf2))); | |
| 66 | return 1; | |
| 67 | } | |
| 68 | ||
| 69 | return 0; | |
| 70 | } | |
| 71 | ||
| 72 | #define TEST_FUNCTION do_test () | |
| 73 | #include "../test-skeleton.c" |