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tests: add test for vdev_disk page alignment check
This provides a test driver and a set of test vectors for the page alignment check callback function vdev_disk_check_pages_cb(). Because there's no good facility for exposing this function to a userspace test right now, for now I'm just duplicating the function and adding commentary to remind people to keep them in sync. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Closes #16076
This commit is contained in:
Rob Norris
Brian Behlendorf
parent
44f337be30
commit
bc27c49404
@ -853,6 +853,11 @@ BIO_END_IO_PROTO(vbio_completion, bio, error)
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* pages) but we still have to ensure the data portion is correctly sized and
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* pages) but we still have to ensure the data portion is correctly sized and
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* aligned to the logical block size, to ensure that if the kernel wants to
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* aligned to the logical block size, to ensure that if the kernel wants to
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* split the BIO, the two halves will still be properly aligned.
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* split the BIO, the two halves will still be properly aligned.
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*
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* NOTE: if you change this function, change the copy in
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* tests/zfs-tests/tests/functional/vdev_disk/page_alignment.c, and add test
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* data there to validate the change you're making.
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*
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*/
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*/
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typedef struct {
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typedef struct {
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uint_t bmask;
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uint_t bmask;
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@ -863,6 +868,7 @@ typedef struct {
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static int
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static int
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vdev_disk_check_pages_cb(struct page *page, size_t off, size_t len, void *priv)
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vdev_disk_check_pages_cb(struct page *page, size_t off, size_t len, void *priv)
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{
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{
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(void) page;
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vdev_disk_check_pages_t *s = priv;
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vdev_disk_check_pages_t *s = priv;
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/*
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/*
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@ -971,6 +971,12 @@ tests = [
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'userspace_send_encrypted', 'userspace_encrypted_13709']
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'userspace_send_encrypted', 'userspace_encrypted_13709']
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tags = ['functional', 'userquota']
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tags = ['functional', 'userquota']
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[tests/functional/vdev_disk:Linux]
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pre =
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post =
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tests = ['page_alignment']
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tags = ['functional', 'vdev_disk']
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[tests/functional/vdev_zaps]
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[tests/functional/vdev_zaps]
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tests = ['vdev_zaps_001_pos', 'vdev_zaps_002_pos', 'vdev_zaps_003_pos',
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tests = ['vdev_zaps_001_pos', 'vdev_zaps_002_pos', 'vdev_zaps_003_pos',
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'vdev_zaps_004_pos', 'vdev_zaps_005_pos', 'vdev_zaps_006_pos',
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'vdev_zaps_004_pos', 'vdev_zaps_005_pos', 'vdev_zaps_006_pos',
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@ -599,6 +599,12 @@ tags = ['functional', 'truncate']
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tests = ['upgrade_userobj_001_pos', 'upgrade_readonly_pool']
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tests = ['upgrade_userobj_001_pos', 'upgrade_readonly_pool']
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tags = ['functional', 'upgrade']
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tags = ['functional', 'upgrade']
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[tests/functional/vdev_disk:Linux]
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pre =
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post =
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tests = ['page_alignment']
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tags = ['functional', 'vdev_disk']
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[tests/functional/vdev_zaps]
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[tests/functional/vdev_zaps]
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tests = ['vdev_zaps_001_pos', 'vdev_zaps_003_pos', 'vdev_zaps_004_pos',
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tests = ['vdev_zaps_001_pos', 'vdev_zaps_003_pos', 'vdev_zaps_004_pos',
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'vdev_zaps_005_pos', 'vdev_zaps_006_pos']
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'vdev_zaps_005_pos', 'vdev_zaps_006_pos']
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@ -13,6 +13,9 @@ scripts_zfs_tests_functional_hkdf_PROGRAMS = %D%/tests/functional/hkdf/hkdf_test
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%C%_tests_functional_hkdf_hkdf_test_LDADD = \
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%C%_tests_functional_hkdf_hkdf_test_LDADD = \
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libzpool.la
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libzpool.la
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scripts_zfs_tests_functional_vdev_diskdir = $(datadir)/$(PACKAGE)/zfs-tests/tests/functional/vdev_disk
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scripts_zfs_tests_functional_vdev_disk_PROGRAMS = %D%/tests/functional/vdev_disk/page_alignment
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scripts_zfs_tests_functional_cp_filesdir = $(datadir)/$(PACKAGE)/zfs-tests/tests/functional/cp_files
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scripts_zfs_tests_functional_cp_filesdir = $(datadir)/$(PACKAGE)/zfs-tests/tests/functional/cp_files
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scripts_zfs_tests_functional_cp_files_PROGRAMS = %D%/tests/functional/cp_files/seekflood
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scripts_zfs_tests_functional_cp_files_PROGRAMS = %D%/tests/functional/cp_files/seekflood
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1
tests/zfs-tests/tests/functional/vdev_disk/.gitignore
vendored
Normal file
1
tests/zfs-tests/tests/functional/vdev_disk/.gitignore
vendored
Normal file
@ -0,0 +1 @@
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page_alignment
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413
tests/zfs-tests/tests/functional/vdev_disk/page_alignment.c
Normal file
413
tests/zfs-tests/tests/functional/vdev_disk/page_alignment.c
Normal file
@ -0,0 +1,413 @@
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2023, 2024, Klara Inc.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <sys/param.h>
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#include <stdlib.h>
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/*
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* This tests the vdev_disk page alignment check callback
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* vdev_disk_check_pages_cb(). For now, this test includes a copy of that
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* function from module/os/linux/zfs/vdev_disk.c. If you change it here,
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* remember to change it there too, and add tests data here to validate the
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* change you're making.
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*/
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struct page;
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typedef struct {
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uint32_t bmask;
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uint32_t npages;
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uint32_t end;
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} vdev_disk_check_pages_t;
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static int
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vdev_disk_check_pages_cb(struct page *page, size_t off, size_t len, void *priv)
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{
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(void) page;
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vdev_disk_check_pages_t *s = priv;
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/*
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* If we didn't finish on a block size boundary last time, then there
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* would be a gap if we tried to use this ABD as-is, so abort.
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*/
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if (s->end != 0)
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return (1);
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/*
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* Note if we're taking less than a full block, so we can check it
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* above on the next call.
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*/
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s->end = len & s->bmask;
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/* All blocks after the first must start on a block size boundary. */
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if (s->npages != 0 && (off & s->bmask) != 0)
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return (1);
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s->npages++;
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return (0);
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}
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typedef struct {
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/* test name */
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const char *name;
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/* blocks size mask */
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uint32_t mask;
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/* amount of data to take */
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size_t size;
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/* [start offset in page, len to end of page or size] */
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size_t pages[16][2];
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} page_test_t;
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static const page_test_t valid_tests[] = {
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/* 512B block tests */
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{
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"512B blocks, 4K single page",
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0x1ff, 0x1000, {
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{ 0x0, 0x1000 },
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},
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}, {
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"512B blocks, 1K at start of page",
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0x1ff, 0x400, {
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{ 0x0, 0x1000 },
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},
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}, {
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"512B blocks, 1K at end of page",
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0x1ff, 0x400, {
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{ 0x0c00, 0x0400 },
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},
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}, {
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"512B blocks, 1K within page, 512B start offset",
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0x1ff, 0x400, {
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{ 0x0200, 0x0e00 },
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},
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}, {
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"512B blocks, 8K across 2x4K pages",
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0x1ff, 0x2000, {
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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},
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}, {
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"512B blocks, 4K across two pages, 2K start offset",
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0x1ff, 0x1000, {
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{ 0x0800, 0x0800 },
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{ 0x0, 0x0800 },
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},
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}, {
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"512B blocks, 16K across 5x4K pages, 512B start offset",
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0x1ff, 0x4000, {
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{ 0x0200, 0x0e00 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x0200 },
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},
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}, {
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"512B blocks, 64K data, 8x8K compound pages",
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0x1ff, 0x10000, {
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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},
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}, {
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"512B blocks, 64K data, 9x8K compound pages, 512B start offset",
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0x1ff, 0x10000, {
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{ 0x0200, 0x1e00 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x0200 },
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},
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}, {
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"512B blocks, 64K data, 2x16K compound pages, 8x4K pages",
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0x1ff, 0x10000, {
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{ 0x0, 0x8000 },
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{ 0x0, 0x8000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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},
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}, {
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"512B blocks, 64K data, mixed 4K/8K/16K pages",
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0x1ff, 0x10000, {
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{ 0x0, 0x1000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x8000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x2000 },
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},
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}, {
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"512B blocks, 64K data, mixed 4K/8K/16K pages, 1K start offset",
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0x1ff, 0x10000, {
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{ 0x0400, 0x0c00 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x8000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x0400 },
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},
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},
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/* 4K block tests */
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{
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"4K blocks, 4K single page",
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0xfff, 0x1000, {
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{ 0x0, 0x1000 },
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},
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}, {
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"4K blocks, 1K at start of page",
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0xfff, 0x400, {
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{ 0x0, 0x1000 },
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},
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}, {
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"4K blocks, 1K at end of page",
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0xfff, 0x400, {
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{ 0x0c00, 0x0400 },
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},
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}, {
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"4K blocks, 1K within page, 512B start offset",
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0xfff, 0x400, {
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{ 0x0200, 0x0e00 },
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},
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}, {
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"4K blocks, 8K across 2x4K pages",
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0xfff, 0x2000, {
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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},
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}, {
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"4K blocks, 4K across two pages, 2K start offset",
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0xfff, 0x1000, {
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{ 0x0800, 0x0800 },
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{ 0x0, 0x0800 },
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},
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}, {
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"4K blocks, 16K across 5x4K pages, 512B start offset",
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0xfff, 0x4000, {
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{ 0x0200, 0x0e00 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x0200 },
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},
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}, {
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"4K blocks, 64K data, 8x8K compound pages",
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0xfff, 0x10000, {
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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},
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}, {
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"4K blocks, 64K data, 9x8K compound pages, 512B start offset",
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0xfff, 0x10000, {
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{ 0x0200, 0x1e00 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x2000 },
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{ 0x0, 0x0200 },
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},
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}, {
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"4K blocks, 64K data, 2x16K compound pages, 8x4K pages",
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0xfff, 0x10000, {
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{ 0x0, 0x8000 },
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{ 0x0, 0x8000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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{ 0x0, 0x1000 },
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},
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}, {
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|
"4K blocks, 64K data, mixed 4K/8K/16K pages",
|
||||||
|
0xfff, 0x10000, {
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x2000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x8000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x2000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x2000 },
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
"4K blocks, 64K data, mixed 4K/8K/16K pages, 1K start offset",
|
||||||
|
0xfff, 0x10000, {
|
||||||
|
{ 0x0400, 0x0c00 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x2000 },
|
||||||
|
{ 0x0, 0x2000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x8000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x0400 },
|
||||||
|
},
|
||||||
|
},
|
||||||
|
|
||||||
|
{ 0 },
|
||||||
|
};
|
||||||
|
|
||||||
|
static const page_test_t invalid_tests[] = {
|
||||||
|
{
|
||||||
|
"512B blocks, 16K data, 512 leader (gang block simulation)",
|
||||||
|
0x1ff, 0x8000, {
|
||||||
|
{ 0x0, 0x0200 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x0c00 },
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
"4K blocks, 32K data, 2 incompatible spans "
|
||||||
|
"(gang abd simulation)",
|
||||||
|
0xfff, 0x8000, {
|
||||||
|
{ 0x0800, 0x0800 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x0800 },
|
||||||
|
{ 0x0800, 0x0800 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x1000 },
|
||||||
|
{ 0x0, 0x0800 },
|
||||||
|
},
|
||||||
|
},
|
||||||
|
{ 0 },
|
||||||
|
};
|
||||||
|
|
||||||
|
static bool
|
||||||
|
run_test(const page_test_t *test, bool verbose)
|
||||||
|
{
|
||||||
|
size_t rem = test->size;
|
||||||
|
|
||||||
|
vdev_disk_check_pages_t s = {
|
||||||
|
.bmask = 0xfff,
|
||||||
|
.npages = 0,
|
||||||
|
.end = 0,
|
||||||
|
};
|
||||||
|
|
||||||
|
for (int i = 0; test->pages[i][1] > 0; i++) {
|
||||||
|
size_t off = test->pages[i][0];
|
||||||
|
size_t len = test->pages[i][1];
|
||||||
|
|
||||||
|
size_t take = MIN(rem, len);
|
||||||
|
|
||||||
|
if (verbose)
|
||||||
|
printf(" page %d [off %lx len %lx], "
|
||||||
|
"rem %lx, take %lx\n",
|
||||||
|
i, off, len, rem, take);
|
||||||
|
|
||||||
|
if (vdev_disk_check_pages_cb(NULL, off, take, &s)) {
|
||||||
|
if (verbose)
|
||||||
|
printf(" ABORT: misalignment detected, "
|
||||||
|
"rem %lx\n", rem);
|
||||||
|
return (false);
|
||||||
|
}
|
||||||
|
|
||||||
|
rem -= take;
|
||||||
|
if (rem == 0)
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (rem > 0) {
|
||||||
|
if (verbose)
|
||||||
|
printf(" ABORT: ran out of pages, rem %lx\n", rem);
|
||||||
|
return (false);
|
||||||
|
}
|
||||||
|
|
||||||
|
return (true);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
run_test_set(const page_test_t *tests, bool want, int *ntests, int *npassed)
|
||||||
|
{
|
||||||
|
for (const page_test_t *test = &tests[0]; test->name; test++) {
|
||||||
|
bool pass = (run_test(test, false) == want);
|
||||||
|
if (pass) {
|
||||||
|
printf("%s: PASS\n", test->name);
|
||||||
|
(*npassed)++;
|
||||||
|
} else {
|
||||||
|
printf("%s: FAIL [expected %s, got %s]\n", test->name,
|
||||||
|
want ? "VALID" : "INVALID",
|
||||||
|
want ? "INVALID" : "VALID");
|
||||||
|
run_test(test, true);
|
||||||
|
}
|
||||||
|
(*ntests)++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(void) {
|
||||||
|
int ntests = 0, npassed = 0;
|
||||||
|
|
||||||
|
run_test_set(valid_tests, true, &ntests, &npassed);
|
||||||
|
run_test_set(invalid_tests, false, &ntests, &npassed);
|
||||||
|
|
||||||
|
printf("\n%d/%d tests passed\n", npassed, ntests);
|
||||||
|
|
||||||
|
return (ntests == npassed ? 0 : 1);
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user