[LTP] [COMMITTED] setsockopt08: includes netinet/in.h

[Petr Vorel <pvorel@suse.cz>]

Hi Li,

> We have to put netinet/in.h on the top to get rid of conflict
> of glibc and kernel headers for old unbuntu.

>   -----------
>   /usr/include/linux/in.h:28:3: error: redeclaration of enumerator 'IPPROTO_IP'
>         IPPROTO_IP = 0,  /* Dummy protocol for TCP  */
>    ^
>   /usr/include/netinet/in.h:42:5: note: previous definition of 'IPPROTO_IP' was here
>        IPPROTO_IP = 0,    /* Dummy protocol for TCP.  */
>   ...
>   -----------

> See: https://www.mail-archive.com/netdev@vger.kernel.org/msg132711.html

Thanks for fixing it, it's not a first time we got hit by this.
I wonder where <linux/in.h> is included. It's not directly in setsockopt08.c,
it must be in our lapi header. But it's not in tst_safe_net.h, not in
safe_net_fn.h nor in tst_net.h and both actually include <netinet/in.h>, thus it must be
before. But there is only tst_test.h.

I'm asking because it'd be better to add <netinet/in.h> into header before
<linux/in.h>.

Kind regards,
Petr

> Fixes: ebf3a4fbd39a (Add setsockopt08, CVE-2021-22555)
> Signed-off-by: Li Wang <liwang@redhat.com>
> ---
>  testcases/kernel/syscalls/setsockopt/setsockopt08.c | 2 ++
>  1 file changed, 2 insertions(+)

> diff --git a/testcases/kernel/syscalls/setsockopt/setsockopt08.c b/testcases/kernel/syscalls/setsockopt/setsockopt08.c
> index f758dcbdc..f7052f27b 100644
> --- a/testcases/kernel/syscalls/setsockopt/setsockopt08.c
> +++ b/testcases/kernel/syscalls/setsockopt/setsockopt08.c
> @@ -79,6 +79,8 @@
>   *  - sizeof(struct xt_entry_target) = 32
>   */

> +#include <netinet/in.h>
> +
>  #include "tst_test.h"
>  #include "tst_safe_net.h"
>  #include "lapi/ip_tables.h"