[PATCH] inet/tst-if_index-long: New test case for CVE-2018-19591 [BZ #23927]

[Florian Weimer]

* Rafal Luzynski:

> 27.11.2018 18:26 Florian Weimer <fweimer@redhat.com> wrote:
>> [...]
>> diff --git a/inet/tst-if_index-long.c b/inet/tst-if_index-long.c
>> new file mode 100644
>> index 0000000000..3dc74874e5
>> --- /dev/null
>> +++ b/inet/tst-if_index-long.c
>> @@ -0,0 +1,61 @@
>> +/* Check for descriptor leak in if_nametoindex with a long interface
>> name.
>> +   Copyright (C) 2018 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
>> +   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, see
>> +   <http://www.gnu.org/licenses/>.  */
>> +
>> +/* This test checks for a descriptor leak in case of a long interface
>> +   name (CVE-2018-19591, bug 23927).  */
>
> These two lines look almost the same as the first line of the file.
> Are you sure you need this information repeated twice?

I think it's useful to reference the bug number somewhere in the test
case and stay within the length limit for the first line of the file.

Thanks,
Florian