linux/lib/kunit_iov_iter.c

// SPDX-License-Identifier: GPL-2.0-only
/* I/O iterator tests.  This can only test kernel-backed iterator types.
 *
 * Copyright (C) 2023 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#define pr_fmt(fmt) …

#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/uio.h>
#include <linux/bvec.h>
#include <kunit/test.h>

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;

struct kvec_test_range { … };

static const struct kvec_test_range kvec_test_ranges[] = …;

static inline u8 pattern(unsigned long x)
{ … }

static void iov_kunit_unmap(void *data)
{ … }

static void *__init iov_kunit_create_buffer(struct kunit *test,
					    struct page ***ppages,
					    size_t npages)
{ … }

static void __init iov_kunit_load_kvec(struct kunit *test,
				       struct iov_iter *iter, int dir,
				       struct kvec *kvec, unsigned int kvmax,
				       void *buffer, size_t bufsize,
				       const struct kvec_test_range *pr)
{ … }

/*
 * Test copying to a ITER_KVEC-type iterator.
 */
static void __init iov_kunit_copy_to_kvec(struct kunit *test)
{ … }

/*
 * Test copying from a ITER_KVEC-type iterator.
 */
static void __init iov_kunit_copy_from_kvec(struct kunit *test)
{ … }

struct bvec_test_range { … };

static const struct bvec_test_range bvec_test_ranges[] = …;

static void __init iov_kunit_load_bvec(struct kunit *test,
				       struct iov_iter *iter, int dir,
				       struct bio_vec *bvec, unsigned int bvmax,
				       struct page **pages, size_t npages,
				       size_t bufsize,
				       const struct bvec_test_range *pr)
{ … }

/*
 * Test copying to a ITER_BVEC-type iterator.
 */
static void __init iov_kunit_copy_to_bvec(struct kunit *test)
{ … }

/*
 * Test copying from a ITER_BVEC-type iterator.
 */
static void __init iov_kunit_copy_from_bvec(struct kunit *test)
{ … }

static void iov_kunit_destroy_xarray(void *data)
{ … }

static void __init iov_kunit_load_xarray(struct kunit *test,
					 struct iov_iter *iter, int dir,
					 struct xarray *xarray,
					 struct page **pages, size_t npages)
{ … }

static struct xarray *iov_kunit_create_xarray(struct kunit *test)
{ … }

/*
 * Test copying to a ITER_XARRAY-type iterator.
 */
static void __init iov_kunit_copy_to_xarray(struct kunit *test)
{ … }

/*
 * Test copying from a ITER_XARRAY-type iterator.
 */
static void __init iov_kunit_copy_from_xarray(struct kunit *test)
{ … }

/*
 * Test the extraction of ITER_KVEC-type iterators.
 */
static void __init iov_kunit_extract_pages_kvec(struct kunit *test)
{ … }

/*
 * Test the extraction of ITER_BVEC-type iterators.
 */
static void __init iov_kunit_extract_pages_bvec(struct kunit *test)
{ … }

/*
 * Test the extraction of ITER_XARRAY-type iterators.
 */
static void __init iov_kunit_extract_pages_xarray(struct kunit *test)
{ … }

static struct kunit_case __refdata iov_kunit_cases[] = …;

static struct kunit_suite iov_kunit_suite = …;

kunit_test_suites(…);