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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
4 */
5
6#include <linux/slab.h>
7#include "btrfs-tests.h"
8#include "../ctree.h"
9#include "../extent_io.h"
10#include "../disk-io.h"
11#include "../accessors.h"
12
13static int test_btrfs_split_item(u32 sectorsize, u32 nodesize)
14{
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";
24 char buf[32];
25 struct btrfs_key key;
26 u32 value_len = strlen(value);
27 int ret = 0;
28
29 test_msg("running btrfs_split_item tests");
30
31 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
32 if (!fs_info) {
33 test_std_err(TEST_ALLOC_FS_INFO);
34 return -ENOMEM;
35 }
36
37 root = btrfs_alloc_dummy_root(fs_info);
38 if (IS_ERR(root)) {
39 test_std_err(TEST_ALLOC_ROOT);
40 ret = PTR_ERR(root);
41 goto out;
42 }
43
44 path = btrfs_alloc_path();
45 if (!path) {
46 test_std_err(TEST_ALLOC_PATH);
47 ret = -ENOMEM;
48 goto out;
49 }
50
51 eb = alloc_dummy_extent_buffer(fs_info, nodesize);
52 path->nodes[0] = eb;
53 if (!eb) {
54 test_std_err(TEST_ALLOC_EXTENT_BUFFER);
55 ret = -ENOMEM;
56 goto out;
57 }
58 path->slots[0] = 0;
59
60 key.objectid = 0;
61 key.type = BTRFS_EXTENT_CSUM_KEY;
62 key.offset = 0;
63
64 btrfs_setup_item_for_insert(root, path, &key, value_len);
65 write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0),
66 value_len);
67
68 key.offset = 3;
69
70 /*
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
73 * leaf.
74 */
75 ret = btrfs_split_item(NULL, root, path, &key, 17);
76 if (ret) {
77 test_err("split item failed %d", ret);
78 goto out;
79 }
80
81 /*
82 * Read the first slot, it should have the original key and contain only
83 * 'mary had a little'
84 */
85 btrfs_item_key_to_cpu(eb, &key, 0);
86 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
87 key.offset != 0) {
88 test_err("invalid key at slot 0");
89 ret = -EINVAL;
90 goto out;
91 }
92
93 if (btrfs_item_size(eb, 0) != strlen(split1)) {
94 test_err("invalid len in the first split");
95 ret = -EINVAL;
96 goto out;
97 }
98
99 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
100 strlen(split1));
101 if (memcmp(buf, split1, strlen(split1))) {
102 test_err(
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);
105 ret = -EINVAL;
106 goto out;
107 }
108
109 btrfs_item_key_to_cpu(eb, &key, 1);
110 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
111 key.offset != 3) {
112 test_err("invalid key at slot 1");
113 ret = -EINVAL;
114 goto out;
115 }
116
117 if (btrfs_item_size(eb, 1) != strlen(split2)) {
118 test_err("invalid len in the second split");
119 ret = -EINVAL;
120 goto out;
121 }
122
123 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
124 strlen(split2));
125 if (memcmp(buf, split2, strlen(split2))) {
126 test_err(
127 "data in the buffer doesn't match what it should in the second split");
128 ret = -EINVAL;
129 goto out;
130 }
131
132 key.offset = 1;
133 /* Do it again so we test memmoving the other items in the leaf */
134 ret = btrfs_split_item(NULL, root, path, &key, 4);
135 if (ret) {
136 test_err("second split item failed %d", ret);
137 goto out;
138 }
139
140 btrfs_item_key_to_cpu(eb, &key, 0);
141 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
142 key.offset != 0) {
143 test_err("invalid key at slot 0");
144 ret = -EINVAL;
145 goto out;
146 }
147
148 if (btrfs_item_size(eb, 0) != strlen(split3)) {
149 test_err("invalid len in the first split");
150 ret = -EINVAL;
151 goto out;
152 }
153
154 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
155 strlen(split3));
156 if (memcmp(buf, split3, strlen(split3))) {
157 test_err(
158 "data in the buffer doesn't match what it should in the third split");
159 ret = -EINVAL;
160 goto out;
161 }
162
163 btrfs_item_key_to_cpu(eb, &key, 1);
164 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
165 key.offset != 1) {
166 test_err("invalid key at slot 1");
167 ret = -EINVAL;
168 goto out;
169 }
170
171 if (btrfs_item_size(eb, 1) != strlen(split4)) {
172 test_err("invalid len in the second split");
173 ret = -EINVAL;
174 goto out;
175 }
176
177 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
178 strlen(split4));
179 if (memcmp(buf, split4, strlen(split4))) {
180 test_err(
181 "data in the buffer doesn't match what it should in the fourth split");
182 ret = -EINVAL;
183 goto out;
184 }
185
186 btrfs_item_key_to_cpu(eb, &key, 2);
187 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
188 key.offset != 3) {
189 test_err("invalid key at slot 2");
190 ret = -EINVAL;
191 goto out;
192 }
193
194 if (btrfs_item_size(eb, 2) != strlen(split2)) {
195 test_err("invalid len in the second split");
196 ret = -EINVAL;
197 goto out;
198 }
199
200 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2),
201 strlen(split2));
202 if (memcmp(buf, split2, strlen(split2))) {
203 test_err(
204 "data in the buffer doesn't match what it should in the last chunk");
205 ret = -EINVAL;
206 goto out;
207 }
208out:
209 btrfs_free_path(path);
210 btrfs_free_dummy_root(root);
211 btrfs_free_dummy_fs_info(fs_info);
212 return ret;
213}
214
215int btrfs_test_extent_buffer_operations(u32 sectorsize, u32 nodesize)
216{
217 test_msg("running extent buffer operation tests");
218 return test_btrfs_split_item(sectorsize, nodesize);
219}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
4 */
5
6#include <linux/slab.h>
7#include "btrfs-tests.h"
8#include "../ctree.h"
9#include "../extent_io.h"
10#include "../disk-io.h"
11
12static int test_btrfs_split_item(u32 sectorsize, u32 nodesize)
13{
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 struct btrfs_item *item;
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";
24 char buf[32];
25 struct btrfs_key key;
26 u32 value_len = strlen(value);
27 int ret = 0;
28
29 test_msg("running btrfs_split_item tests");
30
31 fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
32 if (!fs_info) {
33 test_std_err(TEST_ALLOC_FS_INFO);
34 return -ENOMEM;
35 }
36
37 root = btrfs_alloc_dummy_root(fs_info);
38 if (IS_ERR(root)) {
39 test_std_err(TEST_ALLOC_ROOT);
40 ret = PTR_ERR(root);
41 goto out;
42 }
43
44 path = btrfs_alloc_path();
45 if (!path) {
46 test_std_err(TEST_ALLOC_PATH);
47 ret = -ENOMEM;
48 goto out;
49 }
50
51 path->nodes[0] = eb = alloc_dummy_extent_buffer(fs_info, nodesize);
52 if (!eb) {
53 test_std_err(TEST_ALLOC_EXTENT_BUFFER);
54 ret = -ENOMEM;
55 goto out;
56 }
57 path->slots[0] = 0;
58
59 key.objectid = 0;
60 key.type = BTRFS_EXTENT_CSUM_KEY;
61 key.offset = 0;
62
63 setup_items_for_insert(root, path, &key, &value_len, 1);
64 item = btrfs_item_nr(0);
65 write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0),
66 value_len);
67
68 key.offset = 3;
69
70 /*
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
73 * leaf.
74 */
75 ret = btrfs_split_item(NULL, root, path, &key, 17);
76 if (ret) {
77 test_err("split item failed %d", ret);
78 goto out;
79 }
80
81 /*
82 * Read the first slot, it should have the original key and contain only
83 * 'mary had a little'
84 */
85 btrfs_item_key_to_cpu(eb, &key, 0);
86 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
87 key.offset != 0) {
88 test_err("invalid key at slot 0");
89 ret = -EINVAL;
90 goto out;
91 }
92
93 item = btrfs_item_nr(0);
94 if (btrfs_item_size(eb, item) != strlen(split1)) {
95 test_err("invalid len in the first split");
96 ret = -EINVAL;
97 goto out;
98 }
99
100 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
101 strlen(split1));
102 if (memcmp(buf, split1, strlen(split1))) {
103 test_err(
104"data in the buffer doesn't match what it should in the first split have='%.*s' want '%s'",
105 (int)strlen(split1), buf, split1);
106 ret = -EINVAL;
107 goto out;
108 }
109
110 btrfs_item_key_to_cpu(eb, &key, 1);
111 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
112 key.offset != 3) {
113 test_err("invalid key at slot 1");
114 ret = -EINVAL;
115 goto out;
116 }
117
118 item = btrfs_item_nr(1);
119 if (btrfs_item_size(eb, item) != strlen(split2)) {
120 test_err("invalid len in the second split");
121 ret = -EINVAL;
122 goto out;
123 }
124
125 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
126 strlen(split2));
127 if (memcmp(buf, split2, strlen(split2))) {
128 test_err(
129 "data in the buffer doesn't match what it should in the second split");
130 ret = -EINVAL;
131 goto out;
132 }
133
134 key.offset = 1;
135 /* Do it again so we test memmoving the other items in the leaf */
136 ret = btrfs_split_item(NULL, root, path, &key, 4);
137 if (ret) {
138 test_err("second split item failed %d", ret);
139 goto out;
140 }
141
142 btrfs_item_key_to_cpu(eb, &key, 0);
143 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
144 key.offset != 0) {
145 test_err("invalid key at slot 0");
146 ret = -EINVAL;
147 goto out;
148 }
149
150 item = btrfs_item_nr(0);
151 if (btrfs_item_size(eb, item) != strlen(split3)) {
152 test_err("invalid len in the first split");
153 ret = -EINVAL;
154 goto out;
155 }
156
157 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0),
158 strlen(split3));
159 if (memcmp(buf, split3, strlen(split3))) {
160 test_err(
161 "data in the buffer doesn't match what it should in the third split");
162 ret = -EINVAL;
163 goto out;
164 }
165
166 btrfs_item_key_to_cpu(eb, &key, 1);
167 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
168 key.offset != 1) {
169 test_err("invalid key at slot 1");
170 ret = -EINVAL;
171 goto out;
172 }
173
174 item = btrfs_item_nr(1);
175 if (btrfs_item_size(eb, item) != strlen(split4)) {
176 test_err("invalid len in the second split");
177 ret = -EINVAL;
178 goto out;
179 }
180
181 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1),
182 strlen(split4));
183 if (memcmp(buf, split4, strlen(split4))) {
184 test_err(
185 "data in the buffer doesn't match what it should in the fourth split");
186 ret = -EINVAL;
187 goto out;
188 }
189
190 btrfs_item_key_to_cpu(eb, &key, 2);
191 if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY ||
192 key.offset != 3) {
193 test_err("invalid key at slot 2");
194 ret = -EINVAL;
195 goto out;
196 }
197
198 item = btrfs_item_nr(2);
199 if (btrfs_item_size(eb, item) != strlen(split2)) {
200 test_err("invalid len in the second split");
201 ret = -EINVAL;
202 goto out;
203 }
204
205 read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2),
206 strlen(split2));
207 if (memcmp(buf, split2, strlen(split2))) {
208 test_err(
209 "data in the buffer doesn't match what it should in the last chunk");
210 ret = -EINVAL;
211 goto out;
212 }
213out:
214 btrfs_free_path(path);
215 btrfs_free_dummy_root(root);
216 btrfs_free_dummy_fs_info(fs_info);
217 return ret;
218}
219
220int btrfs_test_extent_buffer_operations(u32 sectorsize, u32 nodesize)
221{
222 test_msg("running extent buffer operation tests");
223 return test_btrfs_split_item(sectorsize, nodesize);
224}