[LTP] [PATCH 2/3] umount02: Simplify test using TST_ macros

[Petr Vorel]

> Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
> ---
>  testcases/kernel/syscalls/umount/umount02.c | 12 +++---------
>  1 file changed, 3 insertions(+), 9 deletions(-)

> diff --git a/testcases/kernel/syscalls/umount/umount02.c b/testcases/kernel/syscalls/umount/umount02.c
> index 34a38c998..40fed1fbd 100644
> --- a/testcases/kernel/syscalls/umount/umount02.c
> +++ b/testcases/kernel/syscalls/umount/umount02.c
> @@ -2,6 +2,7 @@
>  /*
>   * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
>   * Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz>
> + * Copyright (c) Linux Test Project, 2003-2023
>   * Author: Nirmala Devi Dhanasekar <nirmala.devi@wipro.com>
>   *
>   * Check for basic errors returned by umount(2) system call.
> @@ -41,21 +42,14 @@ static void verify_umount(unsigned int n)
>  {
>  	struct tcase *tc = &tcases[n];

> -	TEST(umount(tc->mntpoint));
> -
> -	if (TST_RET != -1) {
> -		tst_res(TFAIL, "umount() succeeds unexpectedly");
> -		return;
> -	}
> +	TST_EXP_FAIL(umount(tc->mntpoint), tc->exp_errno,
> +		     "umount() fail with %s", tc->err_desc);

I'd prefer just:
TST_EXP_FAIL(umount(tc->mntpoint), tc->exp_errno);

>  	if (tc->exp_errno != TST_ERR) {
>  		tst_res(TFAIL | TTERRNO, "umount() should fail with %s",
>  			tst_strerrno(tc->exp_errno));
>  		return;
>  	}
Also this is redundant and should be removed.
With it removed you may add:
Reviewed-by: Petr Vorel <pvorel@suse.cz>

nit: #include <string.h> could be removed.
Also doc could be converted to docparse.

Kind regards,
Petr