diff options
Diffstat (limited to 'drivers/firewire/uapi-test.c')
| -rw-r--r-- | drivers/firewire/uapi-test.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/firewire/uapi-test.c b/drivers/firewire/uapi-test.c new file mode 100644 index 000000000000..4dc633b91336 --- /dev/null +++ b/drivers/firewire/uapi-test.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// uapi_test.c - An application of Kunit to check layout of structures exposed to user space for +// FireWire subsystem. +// +// Copyright (c) 2023 Takashi Sakamoto + +#include <kunit/test.h> +#include <linux/firewire-cdev.h> + +// Known issue added at v2.6.27 kernel. +static void structure_layout_event_response(struct kunit *test) +{ +#if defined(CONFIG_X86_32) + // 4 bytes alignment for aggregate type including 8 bytes storage types. + KUNIT_EXPECT_EQ(test, 20, sizeof(struct fw_cdev_event_response)); +#else + // 8 bytes alignment for aggregate type including 8 bytes storage types. + KUNIT_EXPECT_EQ(test, 24, sizeof(struct fw_cdev_event_response)); +#endif + + KUNIT_EXPECT_EQ(test, 0, offsetof(struct fw_cdev_event_response, closure)); + KUNIT_EXPECT_EQ(test, 8, offsetof(struct fw_cdev_event_response, type)); + KUNIT_EXPECT_EQ(test, 12, offsetof(struct fw_cdev_event_response, rcode)); + KUNIT_EXPECT_EQ(test, 16, offsetof(struct fw_cdev_event_response, length)); + KUNIT_EXPECT_EQ(test, 20, offsetof(struct fw_cdev_event_response, data)); +} + +static struct kunit_case structure_layout_test_cases[] = { + KUNIT_CASE(structure_layout_event_response), + {} +}; + +static struct kunit_suite structure_layout_test_suite = { + .name = "firewire-uapi-structure-layout", + .test_cases = structure_layout_test_cases, +}; +kunit_test_suite(structure_layout_test_suite); |