[LTP] [PATCH] syscalls/copy_file_range02.c: Compatible with new and old kernels

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

On 2019/05/31 16:44, Jinhui huang wrote:
> On new kernels, copy_file_range() returned EISDIR when copyed contents
> to directory, but on old kernels, it returned EBADF, we should accept
> EBADF to be compatible with new and old kernels.
>
> The patch as follows:
> commit 11cbfb10775a ("vfs: deny copy_file_range() for non regular files")
Hi,

From description of commit, I wonder if we can add more tests for some
non regular files(e.g. block, pipe)?
I just want to increase coverage and fix all similar issues as you did. :-)

Best Regards,
Xiao Yang
> Signed-off-by: Jinhui huang <huangjh.jy@cn.fujitsu.com>
> ---
>  .../syscalls/copy_file_range/copy_file_range02.c   | 33 +++++++++++++++-------
>  1 file changed, 23 insertions(+), 10 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c b/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
> index 07c0207..9e6356c 100644
> --- a/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
> +++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
> @@ -54,19 +54,32 @@ static void verify_copy_file_range(unsigned int n)
>  	TEST(sys_copy_file_range(fd_src, 0, *tc->copy_to_fd,
>  				0, CONTSIZE, tc->flags));
>  
> -	if (TST_RET == -1) {
> -		if (tc->exp_err == TST_ERR) {
> +	if (TST_RET != -1) {
> +		tst_res(TFAIL,
> +			"copy_file_range returned wrong value: %ld", TST_RET);
> +		return;
> +	}
> +
> +	if (tc->exp_err == TST_ERR) {
> +		tst_res(TPASS | TTERRNO,
> +			"copy_file_range failed as expected");
> +	} else {
> +		/* copy_file_range() returned EISDIR when copyed contents to
> +		 * directory on new kernels, but on old kernels, it returned
> +		 * EBADF.
> +		 *
> +		 * the patch as follws:
> +		 * commit 11cbfb10775a ("vfs: deny copy_file_range() for non regular files")
> +		 */
> +		if (tc->exp_err == EISDIR && TST_ERR == EBADF) {
>  			tst_res(TPASS | TTERRNO,
> -					"copy_file_range failed as expected");
> -		} else {
> -			tst_res(TFAIL | TTERRNO,
> -				"copy_file_range failed unexpectedly; expected %s, but got",
> -				tst_strerrno(tc->exp_err));
> +				"copy_file_range failed as expected");
>  			return;
>  		}
> -	} else {
> -		tst_res(TFAIL,
> -			"copy_file_range returned wrong value: %ld", TST_RET);
> +
> +		tst_res(TFAIL | TTERRNO,
> +			"copy_file_range failed unexpectedly; expected %s, but got",
> +			tst_strerrno(tc->exp_err));
>  	}
>  }
>