Am Mi., 18. Juni 2025 um 22:54 Uhr schrieb Christian Brauner
<brauner@xxxxxxxxxx>:
>
> Test that extended attributes are permanent.
>
> Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@xxxxxxxxxxxxx>
> ---
> tools/testing/selftests/pidfd/pidfd_xattr_test.c | 35 ++++++++++++++++++++++++
> 1 file changed, 35 insertions(+)
>
> diff --git a/tools/testing/selftests/pidfd/pidfd_xattr_test.c b/tools/testing/selftests/pidfd/pidfd_xattr_test.c
> index 00d400ac515b..5cf7bb0e4bf2 100644
> --- a/tools/testing/selftests/pidfd/pidfd_xattr_test.c
> +++ b/tools/testing/selftests/pidfd/pidfd_xattr_test.c
> @@ -94,4 +94,39 @@ TEST_F(pidfs_xattr, set_get_list_xattr_multiple)
> }
> }
>
> +TEST_F(pidfs_xattr, set_get_list_xattr_persistent)
> +{
> + int ret;
> + char buf[32];
> + char list[PATH_MAX] = {};
> +
> + ret = fsetxattr(self->child_pidfd, "trusted.persistent", "persistent value", strlen("persistent value"), 0);
> + ASSERT_EQ(ret, 0);
> +
> + memset(buf, 0, sizeof(buf));
> + ret = fgetxattr(self->child_pidfd, "trusted.persistent", buf, sizeof(buf));
> + ASSERT_EQ(ret, strlen("persistent value"));
> + ASSERT_EQ(strcmp(buf, "persistent value"), 0);
> +
> + ret = flistxattr(self->child_pidfd, list, sizeof(list));
> + ASSERT_GT(ret, 0);
> + ASSERT_EQ(strcmp(list, "trusted.persistent"), 0)
> +
> + ASSERT_EQ(close(self->child_pidfd), 0);
> + self->child_pidfd = -EBADF;
> + sleep(2);
> +
> + self->child_pidfd = sys_pidfd_open(self->child_pid, 0);
> + ASSERT_GE(self->child_pidfd, 0);
> +
> + memset(buf, 0, sizeof(buf));
> + ret = fgetxattr(self->child_pidfd, "trusted.persistent", buf, sizeof(buf));
> + ASSERT_EQ(ret, strlen("persistent value"));
> + ASSERT_EQ(strcmp(buf, "persistent value"), 0);
> +
> + ret = flistxattr(self->child_pidfd, list, sizeof(list));
> + ASSERT_GT(ret, 0);
> + ASSERT_EQ(strcmp(list, "trusted.persistent"), 0);
> +}
> +
> TEST_HARNESS_MAIN
>
> --
> 2.47.2
>
