diff options
Diffstat (limited to 'inet')
| -rw-r--r-- | inet/Makefile | 4 | ||||
| -rw-r--r-- | inet/bug-if1.c | 73 |
2 files changed, 75 insertions, 2 deletions
diff --git a/inet/Makefile b/inet/Makefile index 7b7e9b1b77..7367d9cf01 100644 --- a/inet/Makefile +++ b/inet/Makefile @@ -1,4 +1,4 @@ -# Copyright (C) 1991-2002, 2003 Free Software Foundation, Inc. +# Copyright (C) 1991-2002, 2003, 2004 Free Software Foundation, Inc. # This file is part of the GNU C Library. # The GNU C Library is free software; you can redistribute it and/or @@ -50,7 +50,7 @@ routines := htonl htons \ aux := check_pf ifreq tests := htontest test_ifindex tst-ntoa tst-ether_aton tst-network \ - tst-gethnm test-ifaddrs + tst-gethnm test-ifaddrs bug-if1 include ../Rules diff --git a/inet/bug-if1.c b/inet/bug-if1.c new file mode 100644 index 0000000000..ddf49aff5b --- /dev/null +++ b/inet/bug-if1.c @@ -0,0 +1,73 @@ +/* Copyright (C) 2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2004. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <net/if.h> + + +static int +do_test (void) +{ + /* Get list of all interfaces. */ + struct if_nameindex *il = if_nameindex (); + if (il == NULL) + { + puts ("cannot get interface list, maybe the system does not support networking; bailing out"); + return 0; + } + + /* Determine the highest interface number. */ + unsigned int max = 0; + for (int cnt = 0; il[cnt].if_name != NULL; ++cnt) + if (il[cnt].if_index > max) + max = il[cnt].if_index; + + /* Use the next higher value (if possible). */ + if (max == UINT_MAX) + { + puts ("highest index too high; need more clever way to determine test index"); + return 0; + } + + char buf[IF_NAMESIZE]; + char *cp = if_indextoname (max + 1, buf); + if (cp != NULL) + { + printf ("invalid index returned result \"%s\"\n", cp); + return 1; + } + else if (errno != ENXIO) + { + int err = errno; + char errbuf1[256]; + char errbuf2[256]; + + printf ("errno = %d (%s), expected %d (%s)\n", + err, strerror_r (err, errbuf1, sizeof (errbuf1)), + ENXIO, strerror_r (ENXIO, errbuf2, sizeof (errbuf2))); + return 1; + } + + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |