1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
6 #include <linux/slab.h>
7 #include "btrfs-tests.h"
9 #include "../extent_io.h"
10 #include "../disk-io.h"
11 #include "../accessors.h"
13 static int test_btrfs_split_item(u32 sectorsize, u32 nodesize)
15 struct btrfs_fs_info *fs_info;
16 struct btrfs_path *path = NULL;
17 struct btrfs_root *root = NULL;
18 struct extent_buffer *eb;
19 char *value = "mary had a little lamb";
20 char *split1 = "mary had a little";
21 char *split2 = " lamb";
22 char *split3 = "mary";
23 char *split4 = " had a little";
26 u32 value_len = strlen(value);
29 test_msg("running btrfs_split_item tests");
31 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
33 test_std_err(TEST_ALLOC_FS_INFO);
37 root = btrfs_alloc_dummy_root(fs_info);
39 test_std_err(TEST_ALLOC_ROOT);
44 path = btrfs_alloc_path();
46 test_std_err(TEST_ALLOC_PATH);
51 eb = alloc_dummy_extent_buffer(fs_info, nodesize);
54 test_std_err(TEST_ALLOC_EXTENT_BUFFER);
61 key.type = BTRFS_EXTENT_CSUM_KEY;
64 btrfs_setup_item_for_insert(root, path, &key, value_len);
65 write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0),
71 * Passing NULL trans here should be safe because we have plenty of
72 * space in this leaf to split the item without having to split the
75 ret = btrfs_split_item(NULL, root, path, &key, 17);
77 test_err("split item failed %d", ret);
82 * Read the first slot, it should have the original key and contain only
85 btrfs_item_key_to_cpu(eb, &key, 0);
86 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
88 test_err("invalid key at slot 0");
93 if (btrfs_item_size(eb, 0) != strlen(split1)) {
94 test_err("invalid len in the first split");
99 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
101 if (memcmp(buf, split1, strlen(split1))) {
103 "data in the buffer doesn't match what it should in the first split have='%.*s' want '%s'",
104 (int)strlen(split1), buf, split1);
109 btrfs_item_key_to_cpu(eb, &key, 1);
110 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
112 test_err("invalid key at slot 1");
117 if (btrfs_item_size(eb, 1) != strlen(split2)) {
118 test_err("invalid len in the second split");
123 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
125 if (memcmp(buf, split2, strlen(split2))) {
127 "data in the buffer doesn't match what it should in the second split");
133 /* Do it again so we test memmoving the other items in the leaf */
134 ret = btrfs_split_item(NULL, root, path, &key, 4);
136 test_err("second split item failed %d", ret);
140 btrfs_item_key_to_cpu(eb, &key, 0);
141 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
143 test_err("invalid key at slot 0");
148 if (btrfs_item_size(eb, 0) != strlen(split3)) {
149 test_err("invalid len in the first split");
154 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
156 if (memcmp(buf, split3, strlen(split3))) {
158 "data in the buffer doesn't match what it should in the third split");
163 btrfs_item_key_to_cpu(eb, &key, 1);
164 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
166 test_err("invalid key at slot 1");
171 if (btrfs_item_size(eb, 1) != strlen(split4)) {
172 test_err("invalid len in the second split");
177 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
179 if (memcmp(buf, split4, strlen(split4))) {
181 "data in the buffer doesn't match what it should in the fourth split");
186 btrfs_item_key_to_cpu(eb, &key, 2);
187 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
189 test_err("invalid key at slot 2");
194 if (btrfs_item_size(eb, 2) != strlen(split2)) {
195 test_err("invalid len in the second split");
200 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2),
202 if (memcmp(buf, split2, strlen(split2))) {
204 "data in the buffer doesn't match what it should in the last chunk");
209 btrfs_free_path(path);
210 btrfs_free_dummy_root(root);
211 btrfs_free_dummy_fs_info(fs_info);
215 int btrfs_test_extent_buffer_operations(u32 sectorsize, u32 nodesize)
217 test_msg("running extent buffer operation tests");
218 return test_btrfs_split_item(sectorsize, nodesize);