[LTP] [PATCH v3 2/3] syscalls/copy_file_range01: add cross-device test

[Amir Goldstein <amir73il@gmail.com>]

On Wed, Jul 10, 2019 at 10:18 AM Yang Xu <xuyang2018.jy@cn.fujitsu.com> wrote:
>
> Amir has relaxed cross-device constraint since commit(vfs: allow
> copy_file_range to copy across devices), I think we can remove it
> in copy_file_range02 and test it in copy_file_range01.
>
> Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
> ---
>  .../copy_file_range/copy_file_range01.c       | 53 +++++++++++++++----
>  1 file changed, 42 insertions(+), 11 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c b/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c
> index a5bd5e7f7..aef626fce 100644
> --- a/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c
> +++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range01.c
> @@ -24,7 +24,17 @@
>
>  static int page_size;
>  static int errcount, numcopies;
> -static int fd_in, fd_out;
> +static int fd_in, fd_out, cross_sup;
> +char FILE_TARGET_PATH[40];
> +
> +static struct tcase {
> +       char    *path;
> +       int     flags;
> +       char    *message;
> +} tcases[] = {
> +       {FILE_DEST_PATH,  0, "non cross-device"},
> +       {FILE_MNTED_PATH, 1, "cross-device"},
> +};
>
>  static int check_file_content(const char *fname1, const char *fname2,
>         loff_t *off1, loff_t *off2, size_t len)
> @@ -131,7 +141,7 @@ static void test_one(size_t len, loff_t *off_in, loff_t *off_out)
>                 to_copy -= TST_RET;
>         } while (to_copy > 0);
>
> -       ret = check_file_content(FILE_SRC_PATH, FILE_DEST_PATH,
> +       ret = check_file_content(FILE_SRC_PATH, FILE_TARGET_PATH,
>                 off_in, off_out, len);
>         if (ret) {
>                 tst_res(TFAIL, "file contents do not match");
> @@ -152,7 +162,7 @@ static void test_one(size_t len, loff_t *off_in, loff_t *off_out)
>  static void open_files(void)
>  {
>         fd_in  = SAFE_OPEN(FILE_SRC_PATH, O_RDONLY);
> -       fd_out = SAFE_OPEN(FILE_DEST_PATH, O_CREAT | O_WRONLY | O_TRUNC, 0644);
> +       fd_out = SAFE_OPEN(FILE_TARGET_PATH, O_CREAT | O_WRONLY | O_TRUNC, 0644);
>  }
>
>  static void close_files(void)
> @@ -163,9 +173,18 @@ static void close_files(void)
>                 SAFE_CLOSE(fd_in);
>  }
>
> -static void copy_file_range_verify(void)
> +static void copy_file_range_verify(unsigned int n)
>  {
>         int i, j, k;
> +       struct tcase *tc = &tcases[n];
> +
> +       if (tc->flags && !cross_sup) {
> +               tst_res(TCONF,
> +                       "copy_file_range doesn't support cross-device, skip it");
> +               return;
> +       }
> +
> +       strcpy(FILE_TARGET_PATH, tc->path);
>
>         errcount = numcopies = 0;
>         size_t len_arr[]        = {11, page_size-1, page_size, page_size+1};
> @@ -190,25 +209,33 @@ static void copy_file_range_verify(void)
>
>         if (errcount == 0)
>                 tst_res(TPASS,
> -                       "copy_file_range completed all %d copy jobs successfully!",
> -                       numcopies);
> +                       "%s copy_file_range completed all %d copy jobs successfully!",
> +                       tc->message, numcopies);
>         else
> -               tst_res(TFAIL, "copy_file_range failed %d of %d copy jobs.",
> -                               errcount, numcopies);
> +               tst_res(TFAIL, "%s copy_file_range failed %d of %d copy jobs.",
> +                       tc->message, errcount, numcopies);
>  }
>
>  static void setup(void)
>  {
> -       int i, fd;
> +       int i, fd, fd1;
>
>         syscall_info();
>
>         page_size = getpagesize();
> -
> +       cross_sup = 1;
>         fd = SAFE_OPEN(FILE_SRC_PATH, O_RDWR | O_CREAT, 0664);
>         /* Writing page_size * 4 of data into test file */
>         for (i = 0; i < (int)(page_size * 4); i++)
>                 SAFE_WRITE(1, fd, CONTENT, CONTSIZE);
> +
> +       fd1 = SAFE_OPEN(FILE_MNTED_PATH, O_RDWR | O_CREAT, 0664);
> +       TEST(sys_copy_file_range(fd, 0, fd1, 0, CONTSIZE, 0));
> +       if (TST_RET == -1)

I would restrict TCONF to errno == EXDEV.
Otherwise, a proper test failure is in order IMO.

> +               cross_sup = 0;
> +
> +       SAFE_CLOSE(fd1);
> +       remove(FILE_MNTED_PATH);
>         SAFE_CLOSE(fd);
>  }
>
> @@ -220,7 +247,11 @@ static void cleanup(void)
>  static struct tst_test test = {
>         .setup = setup,
>         .cleanup = cleanup,
> +       .tcnt = ARRAY_SIZE(tcases),
>         .needs_tmpdir = 1,
> -       .test_all = copy_file_range_verify,
> +       .mount_device = 1,
> +       .mntpoint = MNTPOINT,
> +       .all_filesystems = 1,
> +       .test = copy_file_range_verify,
>         .test_variants = TEST_VARIANTS,
>  };
> --
> 2.18.1
>
>
>