tools/testing/selftests/filesystems/statmount/statmount_test.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/filesystems/statmount/statmount_test.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/filesystems/statmount/statmount_test.c
Extension
.c
Size
21631 bytes
Lines
895
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (ret == -1) {
			ksft_test_result_fail("mounting submount %s: %s\n",
					      root_mntpoint, strerror(errno));
			return -1;
		}
	}
	return 0;
}

static void test_listmount_empty_root(void)
{
	ssize_t res;
	const unsigned int size = 32;
	uint64_t list[size];

	res = listmount(LSMT_ROOT, 0, 0, list, size, 0);
	if (res == -1) {
		ksft_test_result_fail("listmount: %s\n", strerror(errno));
		return;
	}
	if (res != 1) {
		ksft_test_result_fail("listmount result is %zi != 1\n", res);
		return;
	}

	if (list[0] != root_id) {
		ksft_test_result_fail("listmount ID doesn't match 0x%llx != 0x%llx\n",
				      (unsigned long long) list[0],
				      (unsigned long long) root_id);
		return;
	}

	ksft_test_result_pass("listmount empty root\n");
}

static void test_statmount_zero_mask(void)
{
	struct statmount sm;
	int ret;

	ret = statmount(root_id, 0, 0, 0, &sm, sizeof(sm), 0);
	if (ret == -1) {
		ksft_test_result_fail("statmount zero mask: %s\n",
				      strerror(errno));
		return;
	}
	if (sm.size != sizeof(sm)) {
		ksft_test_result_fail("unexpected size: %u != %u\n",
				      sm.size, (uint32_t) sizeof(sm));
		return;
	}
	if (sm.mask != 0) {
		ksft_test_result_fail("unexpected mask: 0x%llx != 0x0\n",
				      (unsigned long long) sm.mask);
		return;
	}

	ksft_test_result_pass("statmount zero mask\n");
}

static void test_statmount_mnt_basic(void)
{
	struct statmount sm;
	int ret;
	uint64_t mask = STATMOUNT_MNT_BASIC;

	ret = statmount(root_id, 0, 0, mask, &sm, sizeof(sm), 0);
	if (ret == -1) {
		ksft_test_result_fail("statmount mnt basic: %s\n",
				      strerror(errno));
		return;
	}
	if (sm.size != sizeof(sm)) {
		ksft_test_result_fail("unexpected size: %u != %u\n",
				      sm.size, (uint32_t) sizeof(sm));
		return;
	}
	if (sm.mask != mask) {
		ksft_test_result_skip("statmount mnt basic unavailable\n");
		return;
	}

	if (sm.mnt_id != root_id) {
		ksft_test_result_fail("unexpected root ID: 0x%llx != 0x%llx\n",
				      (unsigned long long) sm.mnt_id,
				      (unsigned long long) root_id);
		return;
	}

	if (sm.mnt_id_old != old_root_id) {

Annotation

Implementation Notes