Re: [RFC PATCH v1 3/5] selftests/filesystems: check that fusectlfs is mounted

[Amir Goldstein]

On Wed, Jul 8, 2026 at 3:11 PM Luis Henriques <luis@xxxxxxxxxx> wrote:
>
> The control filesystem for FUSE needs to be mounted for the fusectl_test to
> be successfully run.  Skip the test is that is not the case.
>
> Signed-off-by: Luis Henriques <luis@xxxxxxxxxx>
Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx>

> ---
>  tools/testing/selftests/filesystems/fuse/fusectl_test.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/tools/testing/selftests/filesystems/fuse/fusectl_test.c b/tools/testing/selftests/filesystems/fuse/fusectl_test.c
> index 0d1d012c35ed..2dcfd3ebe0d5 100644
> --- a/tools/testing/selftests/filesystems/fuse/fusectl_test.c
> +++ b/tools/testing/selftests/filesystems/fuse/fusectl_test.c
> @@ -48,6 +48,7 @@ FIXTURE_SETUP(fusectl)
>         uid_t uid = getuid();
>         gid_t gid = getgid();
>         char buf[32];
> +       char path_buf[PATH_MAX];
>
>         /* Setup userns */
>         ASSERT_EQ(unshare(CLONE_NEWNS|CLONE_NEWUSER), 0);
> @@ -93,6 +94,12 @@ FIXTURE_SETUP(fusectl)
>                      strerror(errno));
>
>         self->connection = statbuf.st_dev;
> +
> +       sprintf(path_buf, "/sys/fs/fuse/connections/%d", self->connection);
> +       if (access(path_buf, F_OK) != 0)
> +               SKIP(return,
> +                    "fusectl doesn't seem to be mounted: %s\n",
> +                    strerror(errno));
>  }
>
>  FIXTURE_TEARDOWN(fusectl)
>