[LTP] [PATCH 3/3] umount03: Simplify test using TST_ macros

[Petr Vorel]

Hi Xu,

> Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
> ---
>  testcases/kernel/syscalls/umount/umount03.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)

this is not needed:
#include <errno.h>

This is for all 3 patches.

> diff --git a/testcases/kernel/syscalls/umount/umount03.c b/testcases/kernel/syscalls/umount/umount03.c
> index 1cef06fa1..e6bb523b4 100644
> --- a/testcases/kernel/syscalls/umount/umount03.c
> +++ b/testcases/kernel/syscalls/umount/umount03.c
> @@ -1,6 +1,7 @@
>  // SPDX-License-Identifier: GPL-2.0-or-later
>  /*
>   * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
> + * Copyright (c) Linux Test Project, 2003-2023
>   * Author: Nirmala Devi Dhanasekar <nirmala.devi@wipro.com>
>   *
>   * Verify that umount(2) returns -1 and sets errno to  EPERM if the user
> @@ -20,19 +21,12 @@ static int mount_flag;

>  static void verify_umount(void)
>  {
> -	TEST(umount(MNTPOINT));
> -
> -	if (TST_RET != -1) {
> -		tst_res(TFAIL, "umount() succeeds unexpectedly");
> -		return;
> -	}
> +	TST_EXP_FAIL(umount(MNTPOINT), EPERM, "umount(%s) Failed", MNTPOINT);
nit: I would prefer just:

	TST_EXP_FAIL(umount(MNTPOINT), EPERM);


>  	if (TST_ERR != EPERM) {
>  		tst_res(TFAIL | TTERRNO, "umount() should fail with EPERM");
>  		return;
>  	}
This should have been removed, it's redundant when TST_EXP_FAIL() is done.
> -
> -	tst_res(TPASS | TTERRNO, "umount() fails as expected");
>  }

>  static void setup(void)

With <errno.h> and if (TST_ERR != EPERM) removed you can add:
Reviewed-by: Petr Vorel <pvorel@suse.cz>

It would be good (as a separate commit) to reword the documentation and convert
it to docparse. Feel free to do it, or please let me know if I should do it.

Kind regards,
Petr