[LTP] [PATCH v3] waitid10: Add .needs_tmpdir=1 to run test in temporary directory

[Li Wang]

On Mon, Apr 8, 2024 at 3:48 PM Hui Min Mina Chou via ltp <ltp@lists.linux.it>
wrote:

> When testing via NFS mount LTP folder on the board, with the NFS server
> configured using 'anonuid' and 'anongid' options to set specific
> uid/gid, waitid10 fails. This is due to a uid mismatch during core dump
> file creation, leading to an aborted dump, resulting in the child
> process receiving the signal CLD_KILLED instead of CLD_DUMPED.
>
>   # ./waitid10
>   tst_buffers.c:56: TINFO: Test is using guarded buffers
>   tst_test.c:1732: TINFO: LTP version: 20240129
>   tst_test.c:1616: TINFO: Timeout per run is 0h 05m 00s
>   waitid10.c:64: TINFO: Raising RLIMIT_CORE rlim_cur=0 -> 0
>   [  296.482665] mnt_uid= 1036, curr_uid= 0
>   [  296.483041] Core dump to core aborted: cannot preserve file owner
>   waitid10.c:36: TPASS: waitid(P_ALL, 0, infop, WEXITED) passed
>   waitid10.c:37: TPASS: infop->si_pid == pidchild (149)
>   waitid10.c:38: TPASS: infop->si_status == SIGFPE (8)
>   waitid10.c:39: TPASS: infop->si_signo == SIGCHLD (17)
>   waitid10.c:42: TFAIL: infop->si_code (2) != CLD_DUMPED (3)
>
> Therefore, add .needs_tmpdir = 1 relocates the working directory to
> temporary directory, preventing core file creation failures due to
> NFS server settings.
>
> Signed-off-by: Hui Min Mina Chou <minachou@andestech.com>
>

Reviewed-by: Li Wang <liwang@redhat.com>

---
>  testcases/kernel/syscalls/waitid/waitid10.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/testcases/kernel/syscalls/waitid/waitid10.c
> b/testcases/kernel/syscalls/waitid/waitid10.c
> index e55e88c2325e..9100cc2d7a54 100644
> --- a/testcases/kernel/syscalls/waitid/waitid10.c
> +++ b/testcases/kernel/syscalls/waitid/waitid10.c
> @@ -76,4 +76,5 @@ static struct tst_test test = {
>                 {&infop, .size = sizeof(*infop)},
>                 {},
>         },
> +       .needs_tmpdir = 1,
>  };
> --
> 2.34.1
>
>
> --
> Mailing list info: https://lists.linux.it/listinfo/ltp
>
>

-- 
Regards,
Li Wang