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 eb = alloc_dummy_extent_buffer(fs_info, nodesize);
53 test_std_err(TEST_ALLOC_EXTENT_BUFFER);
60 key.type = BTRFS_EXTENT_CSUM_KEY;
63 btrfs_setup_item_for_insert(root, path, &key, value_len);
64 write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0),
70 * Passing NULL trans here should be safe because we have plenty of
71 * space in this leaf to split the item without having to split the
74 ret = btrfs_split_item(NULL, root, path, &key, 17);
76 test_err("split item failed %d", ret);
81 * Read the first slot, it should have the original key and contain only
84 btrfs_item_key_to_cpu(eb, &key, 0);
85 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
87 test_err("invalid key at slot 0");
92 if (btrfs_item_size(eb, 0) != strlen(split1)) {
93 test_err("invalid len in the first split");
98 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
100 if (memcmp(buf, split1, strlen(split1))) {
102 "data in the buffer doesn't match what it should in the first split have='%.*s' want '%s'",
103 (int)strlen(split1), buf, split1);
108 btrfs_item_key_to_cpu(eb, &key, 1);
109 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
111 test_err("invalid key at slot 1");
116 if (btrfs_item_size(eb, 1) != strlen(split2)) {
117 test_err("invalid len in the second split");
122 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
124 if (memcmp(buf, split2, strlen(split2))) {
126 "data in the buffer doesn't match what it should in the second split");
132 /* Do it again so we test memmoving the other items in the leaf */
133 ret = btrfs_split_item(NULL, root, path, &key, 4);
135 test_err("second split item failed %d", ret);
139 btrfs_item_key_to_cpu(eb, &key, 0);
140 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
142 test_err("invalid key at slot 0");
147 if (btrfs_item_size(eb, 0) != strlen(split3)) {
148 test_err("invalid len in the first split");
153 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
155 if (memcmp(buf, split3, strlen(split3))) {
157 "data in the buffer doesn't match what it should in the third split");
162 btrfs_item_key_to_cpu(eb, &key, 1);
163 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
165 test_err("invalid key at slot 1");
170 if (btrfs_item_size(eb, 1) != strlen(split4)) {
171 test_err("invalid len in the second split");
176 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
178 if (memcmp(buf, split4, strlen(split4))) {
180 "data in the buffer doesn't match what it should in the fourth split");
185 btrfs_item_key_to_cpu(eb, &key, 2);
186 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
188 test_err("invalid key at slot 2");
193 if (btrfs_item_size(eb, 2) != strlen(split2)) {
194 test_err("invalid len in the second split");
199 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2),
201 if (memcmp(buf, split2, strlen(split2))) {
203 "data in the buffer doesn't match what it should in the last chunk");
208 btrfs_free_path(path);
209 btrfs_free_dummy_root(root);
210 btrfs_free_dummy_fs_info(fs_info);
214 int btrfs_test_extent_buffer_operations(u32 sectorsize, u32 nodesize)
216 test_msg("running extent buffer operation tests");
217 return test_btrfs_split_item(sectorsize, nodesize);