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"
12 static int test_btrfs_split_item(u32 sectorsize, u32 nodesize)
14 struct btrfs_fs_info *fs_info;
15 struct btrfs_path *path = NULL;
16 struct btrfs_root *root = NULL;
17 struct extent_buffer *eb;
18 char *value = "mary had a little lamb";
19 char *split1 = "mary had a little";
20 char *split2 = " lamb";
21 char *split3 = "mary";
22 char *split4 = " had a little";
25 u32 value_len = strlen(value);
28 test_msg("running btrfs_split_item tests");
30 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
32 test_std_err(TEST_ALLOC_FS_INFO);
36 root = btrfs_alloc_dummy_root(fs_info);
38 test_std_err(TEST_ALLOC_ROOT);
43 path = btrfs_alloc_path();
45 test_std_err(TEST_ALLOC_PATH);
50 path->nodes[0] = eb = alloc_dummy_extent_buffer(fs_info, nodesize);
52 test_std_err(TEST_ALLOC_EXTENT_BUFFER);
59 key.type = BTRFS_EXTENT_CSUM_KEY;
62 btrfs_setup_item_for_insert(root, path, &key, value_len);
63 write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0),
69 * Passing NULL trans here should be safe because we have plenty of
70 * space in this leaf to split the item without having to split the
73 ret = btrfs_split_item(NULL, root, path, &key, 17);
75 test_err("split item failed %d", ret);
80 * Read the first slot, it should have the original key and contain only
83 btrfs_item_key_to_cpu(eb, &key, 0);
84 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
86 test_err("invalid key at slot 0");
91 if (btrfs_item_size(eb, 0) != strlen(split1)) {
92 test_err("invalid len in the first split");
97 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
99 if (memcmp(buf, split1, strlen(split1))) {
101 "data in the buffer doesn't match what it should in the first split have='%.*s' want '%s'",
102 (int)strlen(split1), buf, split1);
107 btrfs_item_key_to_cpu(eb, &key, 1);
108 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
110 test_err("invalid key at slot 1");
115 if (btrfs_item_size(eb, 1) != strlen(split2)) {
116 test_err("invalid len in the second split");
121 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
123 if (memcmp(buf, split2, strlen(split2))) {
125 "data in the buffer doesn't match what it should in the second split");
131 /* Do it again so we test memmoving the other items in the leaf */
132 ret = btrfs_split_item(NULL, root, path, &key, 4);
134 test_err("second split item failed %d", ret);
138 btrfs_item_key_to_cpu(eb, &key, 0);
139 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
141 test_err("invalid key at slot 0");
146 if (btrfs_item_size(eb, 0) != strlen(split3)) {
147 test_err("invalid len in the first split");
152 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
154 if (memcmp(buf, split3, strlen(split3))) {
156 "data in the buffer doesn't match what it should in the third split");
161 btrfs_item_key_to_cpu(eb, &key, 1);
162 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
164 test_err("invalid key at slot 1");
169 if (btrfs_item_size(eb, 1) != strlen(split4)) {
170 test_err("invalid len in the second split");
175 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
177 if (memcmp(buf, split4, strlen(split4))) {
179 "data in the buffer doesn't match what it should in the fourth split");
184 btrfs_item_key_to_cpu(eb, &key, 2);
185 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
187 test_err("invalid key at slot 2");
192 if (btrfs_item_size(eb, 2) != strlen(split2)) {
193 test_err("invalid len in the second split");
198 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2),
200 if (memcmp(buf, split2, strlen(split2))) {
202 "data in the buffer doesn't match what it should in the last chunk");
207 btrfs_free_path(path);
208 btrfs_free_dummy_root(root);
209 btrfs_free_dummy_fs_info(fs_info);
213 int btrfs_test_extent_buffer_operations(u32 sectorsize, u32 nodesize)
215 test_msg("running extent buffer operation tests");
216 return test_btrfs_split_item(sectorsize, nodesize);