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

[Mike Rapoport]

On Mon, Apr 20, 2026 at 03:15:14PM +0100, luca.boccassi at gmail.com wrote:
> From: Luca Boccassi <luca.boccassi at 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 at gmail.com>
> Reviewed-by: Pasha Tatashin <pasha.tatashin at soleen.com>

Acked-by: Mike Rapoport (Microsoft) <rppt at 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.