forked from Minki/linux
770e0cc040
Signed-off-by: David Sterba <dsterba@suse.com>
226 lines
5.4 KiB
C
226 lines
5.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2013 Fusion IO. All rights reserved.
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*/
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#include <linux/slab.h>
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#include "btrfs-tests.h"
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#include "../ctree.h"
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#include "../extent_io.h"
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#include "../disk-io.h"
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static int test_btrfs_split_item(u32 sectorsize, u32 nodesize)
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{
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struct btrfs_fs_info *fs_info;
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struct btrfs_path *path = NULL;
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struct btrfs_root *root = NULL;
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struct extent_buffer *eb;
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struct btrfs_item *item;
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char *value = "mary had a little lamb";
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char *split1 = "mary had a little";
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char *split2 = " lamb";
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char *split3 = "mary";
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char *split4 = " had a little";
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char buf[32];
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struct btrfs_key key;
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u32 value_len = strlen(value);
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int ret = 0;
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test_msg("running btrfs_split_item tests");
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fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
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if (!fs_info) {
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test_std_err(TEST_ALLOC_FS_INFO);
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return -ENOMEM;
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}
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root = btrfs_alloc_dummy_root(fs_info);
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if (IS_ERR(root)) {
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test_std_err(TEST_ALLOC_ROOT);
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ret = PTR_ERR(root);
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goto out;
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}
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path = btrfs_alloc_path();
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if (!path) {
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test_std_err(TEST_ALLOC_PATH);
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ret = -ENOMEM;
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goto out;
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}
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path->nodes[0] = eb = alloc_dummy_extent_buffer(fs_info, nodesize);
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if (!eb) {
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test_std_err(TEST_ALLOC_EXTENT_BUFFER);
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ret = -ENOMEM;
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goto out;
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}
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path->slots[0] = 0;
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key.objectid = 0;
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key.type = BTRFS_EXTENT_CSUM_KEY;
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key.offset = 0;
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setup_items_for_insert(root, path, &key, &value_len, value_len,
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value_len + sizeof(struct btrfs_item), 1);
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item = btrfs_item_nr(0);
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write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0),
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value_len);
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key.offset = 3;
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/*
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* Passing NULL trans here should be safe because we have plenty of
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* space in this leaf to split the item without having to split the
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* leaf.
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*/
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ret = btrfs_split_item(NULL, root, path, &key, 17);
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if (ret) {
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test_err("split item failed %d", ret);
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goto out;
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}
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/*
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* Read the first slot, it should have the original key and contain only
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* 'mary had a little'
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*/
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btrfs_item_key_to_cpu(eb, &key, 0);
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if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
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key.offset != 0) {
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test_err("invalid key at slot 0");
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ret = -EINVAL;
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goto out;
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}
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item = btrfs_item_nr(0);
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if (btrfs_item_size(eb, item) != strlen(split1)) {
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test_err("invalid len in the first split");
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ret = -EINVAL;
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goto out;
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}
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read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
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strlen(split1));
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if (memcmp(buf, split1, strlen(split1))) {
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test_err(
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"data in the buffer doesn't match what it should in the first split have='%.*s' want '%s'",
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(int)strlen(split1), buf, split1);
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ret = -EINVAL;
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goto out;
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}
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btrfs_item_key_to_cpu(eb, &key, 1);
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if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
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key.offset != 3) {
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test_err("invalid key at slot 1");
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ret = -EINVAL;
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goto out;
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}
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item = btrfs_item_nr(1);
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if (btrfs_item_size(eb, item) != strlen(split2)) {
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test_err("invalid len in the second split");
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ret = -EINVAL;
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goto out;
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}
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read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
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strlen(split2));
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if (memcmp(buf, split2, strlen(split2))) {
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test_err(
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"data in the buffer doesn't match what it should in the second split");
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ret = -EINVAL;
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goto out;
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}
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key.offset = 1;
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/* Do it again so we test memmoving the other items in the leaf */
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ret = btrfs_split_item(NULL, root, path, &key, 4);
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if (ret) {
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test_err("second split item failed %d", ret);
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goto out;
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}
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btrfs_item_key_to_cpu(eb, &key, 0);
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if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
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key.offset != 0) {
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test_err("invalid key at slot 0");
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ret = -EINVAL;
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goto out;
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}
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item = btrfs_item_nr(0);
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if (btrfs_item_size(eb, item) != strlen(split3)) {
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test_err("invalid len in the first split");
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ret = -EINVAL;
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goto out;
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}
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read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
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strlen(split3));
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if (memcmp(buf, split3, strlen(split3))) {
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test_err(
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"data in the buffer doesn't match what it should in the third split");
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ret = -EINVAL;
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goto out;
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}
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btrfs_item_key_to_cpu(eb, &key, 1);
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if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
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key.offset != 1) {
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test_err("invalid key at slot 1");
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ret = -EINVAL;
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goto out;
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}
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item = btrfs_item_nr(1);
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if (btrfs_item_size(eb, item) != strlen(split4)) {
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test_err("invalid len in the second split");
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ret = -EINVAL;
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goto out;
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}
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read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
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strlen(split4));
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if (memcmp(buf, split4, strlen(split4))) {
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test_err(
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"data in the buffer doesn't match what it should in the fourth split");
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ret = -EINVAL;
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goto out;
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}
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btrfs_item_key_to_cpu(eb, &key, 2);
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if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
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key.offset != 3) {
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test_err("invalid key at slot 2");
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ret = -EINVAL;
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goto out;
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}
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item = btrfs_item_nr(2);
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if (btrfs_item_size(eb, item) != strlen(split2)) {
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test_err("invalid len in the second split");
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ret = -EINVAL;
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goto out;
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}
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read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2),
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strlen(split2));
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if (memcmp(buf, split2, strlen(split2))) {
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test_err(
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"data in the buffer doesn't match what it should in the last chunk");
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ret = -EINVAL;
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goto out;
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}
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out:
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btrfs_free_path(path);
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btrfs_free_dummy_root(root);
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btrfs_free_dummy_fs_info(fs_info);
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return ret;
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}
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int btrfs_test_extent_buffer_operations(u32 sectorsize, u32 nodesize)
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{
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test_msg("running extent buffer operation tests");
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return test_btrfs_split_item(sectorsize, nodesize);
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}
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