Re: [PATCH v9 6/6] selftests/liveupdate: add test cases for LIVEUPDATE_SESSION_GET_NAME

Mike Rapoport
2026-04-21T10:35:05Z

On Mon, Apr 20, 2026 at 03:15:14PM +0100, luca.boccassi@gmail.com wrote:
> From: Luca Boccassi <luca.boccassi@gmail.com>
>
> Verify that the new LIVEUPDATE_SESSION_GET_NAME ioctl works
> as expected via new test cases in the existing liveupdate selftest.
>
> Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>

Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

> ---
> .../testing/selftests/liveupdate/liveupdate.c | 71 +++++++++++++++++++
> 1 file changed, 71 insertions(+)
>
> diff --git a/tools/testing/selftests/liveupdate/liveupdate.c b/tools/testing/selftests/liveupdate/liveupdate.c
> index 5e99af0cc6e9..c21354dc9b93 100644
> --- a/tools/testing/selftests/liveupdate/liveupdate.c
> +++ b/tools/testing/selftests/liveupdate/liveupdate.c
> @@ -105,6 +105,22 @@ static int create_session(int lu_fd, const char *name)
> return args.fd;
> }
>
> +/* Helper function to get a session name via ioctl. */
> +static int get_session_name(int session_fd, char *name, size_t name_len)
> +{
> + struct liveupdate_session_get_name args = {};
> +
> + args.size = sizeof(args);
> +
> + if (ioctl(session_fd, LIVEUPDATE_SESSION_GET_NAME, &args))
> + return -errno;
> +
> + strncpy(name, (char *)args.name, name_len - 1);
> + name[name_len - 1] = '\0';
> +
> + return 0;
> +}
> +
> /*
> * Test Case: Create Duplicate Session
> *
> @@ -427,4 +443,59 @@ TEST_F(liveupdate_device, session_fstat)
> ASSERT_EQ(close(session_fd2), 0);
> }
>
> +/*
> + * Test Case: Get Session Name
> + *
> + * Verifies that the full session name can be retrieved from a session file
> + * descriptor via ioctl.
> + */
> +TEST_F(liveupdate_device, get_session_name)
> +{
> + char name_buf[LIVEUPDATE_SESSION_NAME_LENGTH] = {};
> + const char *session_name = "get-name-test-session";
> + int session_fd;
> +
> + self->fd1 = open(LIVEUPDATE_DEV, O_RDWR);
> + if (self->fd1 < 0 && errno == ENOENT)
> + SKIP(return, "%s does not exist", LIVEUPDATE_DEV);
> + ASSERT_GE(self->fd1, 0);
> +
> + session_fd = create_session(self->fd1, session_name);
> + ASSERT_GE(session_fd, 0);
> +
> + ASSERT_EQ(get_session_name(session_fd, name_buf, sizeof(name_buf)), 0);
> + ASSERT_STREQ(name_buf, session_name);
> +
> + ASSERT_EQ(close(session_fd), 0);
> +}
> +
> +/*
> + * Test Case: Get Session Name at Maximum Length
> + *
> + * Verifies that a session name using the full LIVEUPDATE_SESSION_NAME_LENGTH
> + * (minus the null terminator) can be correctly retrieved.
> + */
> +TEST_F(liveupdate_device, get_session_name_max_length)
> +{
> + char name_buf[LIVEUPDATE_SESSION_NAME_LENGTH] = {};
> + char long_name[LIVEUPDATE_SESSION_NAME_LENGTH];
> + int session_fd;
> +
> + memset(long_name, 'A', sizeof(long_name) - 1);
> + long_name[sizeof(long_name) - 1] = '\0';
> +
> + self->fd1 = open(LIVEUPDATE_DEV, O_RDWR);
> + if (self->fd1 < 0 && errno == ENOENT)
> + SKIP(return, "%s does not exist", LIVEUPDATE_DEV);
> + ASSERT_GE(self->fd1, 0);
> +
> + session_fd = create_session(self->fd1, long_name);
> + ASSERT_GE(session_fd, 0);
> +
> + ASSERT_EQ(get_session_name(session_fd, name_buf, sizeof(name_buf)), 0);
> + ASSERT_STREQ(name_buf, long_name);
> +
> + ASSERT_EQ(close(session_fd), 0);
> +}
> +
> TEST_HARNESS_MAIN
> --
> 2.47.3
>

--
Sincerely yours,
Mike.