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06ea65a3 JB |
1 | /* |
2 | * Copyright (C) 2013 Fusion IO. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
19 | #include <linux/slab.h> | |
20 | #include "btrfs-tests.h" | |
21 | #include "../ctree.h" | |
22 | #include "../extent_io.h" | |
23 | #include "../disk-io.h" | |
24 | ||
25 | static int test_btrfs_split_item(void) | |
26 | { | |
27 | struct btrfs_path *path; | |
28 | struct btrfs_root *root; | |
29 | struct extent_buffer *eb; | |
30 | struct btrfs_item *item; | |
31 | char *value = "mary had a little lamb"; | |
32 | char *split1 = "mary had a little"; | |
33 | char *split2 = " lamb"; | |
34 | char *split3 = "mary"; | |
35 | char *split4 = " had a little"; | |
36 | char buf[32]; | |
37 | struct btrfs_key key; | |
38 | u32 value_len = strlen(value); | |
39 | int ret = 0; | |
40 | ||
41 | test_msg("Running btrfs_split_item tests\n"); | |
42 | ||
43 | root = btrfs_alloc_dummy_root(); | |
44 | if (IS_ERR(root)) { | |
45 | test_msg("Could not allocate root\n"); | |
46 | return PTR_ERR(root); | |
47 | } | |
48 | ||
49 | path = btrfs_alloc_path(); | |
50 | if (!path) { | |
51 | test_msg("Could not allocate path\n"); | |
52 | kfree(root); | |
53 | return -ENOMEM; | |
54 | } | |
55 | ||
3f556f78 | 56 | path->nodes[0] = eb = alloc_dummy_extent_buffer(NULL, 4096); |
06ea65a3 JB |
57 | if (!eb) { |
58 | test_msg("Could not allocate dummy buffer\n"); | |
59 | ret = -ENOMEM; | |
60 | goto out; | |
61 | } | |
62 | path->slots[0] = 0; | |
63 | ||
64 | key.objectid = 0; | |
65 | key.type = BTRFS_EXTENT_CSUM_KEY; | |
66 | key.offset = 0; | |
67 | ||
68 | setup_items_for_insert(root, path, &key, &value_len, value_len, | |
69 | value_len + sizeof(struct btrfs_item), 1); | |
70 | item = btrfs_item_nr(0); | |
71 | write_extent_buffer(eb, value, btrfs_item_ptr_offset(eb, 0), | |
72 | value_len); | |
73 | ||
74 | key.offset = 3; | |
75 | ||
76 | /* | |
77 | * Passing NULL trans here should be safe because we have plenty of | |
78 | * space in this leaf to split the item without having to split the | |
79 | * leaf. | |
80 | */ | |
81 | ret = btrfs_split_item(NULL, root, path, &key, 17); | |
82 | if (ret) { | |
83 | test_msg("Split item failed %d\n", ret); | |
84 | goto out; | |
85 | } | |
86 | ||
87 | /* | |
88 | * Read the first slot, it should have the original key and contain only | |
89 | * 'mary had a little' | |
90 | */ | |
91 | btrfs_item_key_to_cpu(eb, &key, 0); | |
92 | if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY || | |
93 | key.offset != 0) { | |
94 | test_msg("Invalid key at slot 0\n"); | |
95 | ret = -EINVAL; | |
96 | goto out; | |
97 | } | |
98 | ||
99 | item = btrfs_item_nr(0); | |
100 | if (btrfs_item_size(eb, item) != strlen(split1)) { | |
101 | test_msg("Invalid len in the first split\n"); | |
102 | ret = -EINVAL; | |
103 | goto out; | |
104 | } | |
105 | ||
106 | read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0), | |
107 | strlen(split1)); | |
108 | if (memcmp(buf, split1, strlen(split1))) { | |
109 | test_msg("Data in the buffer doesn't match what it should " | |
110 | "in the first split have='%.*s' want '%s'\n", | |
111 | (int)strlen(split1), buf, split1); | |
112 | ret = -EINVAL; | |
113 | goto out; | |
114 | } | |
115 | ||
116 | btrfs_item_key_to_cpu(eb, &key, 1); | |
117 | if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY || | |
118 | key.offset != 3) { | |
119 | test_msg("Invalid key at slot 1\n"); | |
120 | ret = -EINVAL; | |
121 | goto out; | |
122 | } | |
123 | ||
124 | item = btrfs_item_nr(1); | |
125 | if (btrfs_item_size(eb, item) != strlen(split2)) { | |
126 | test_msg("Invalid len in the second split\n"); | |
127 | ret = -EINVAL; | |
128 | goto out; | |
129 | } | |
130 | ||
131 | read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1), | |
132 | strlen(split2)); | |
133 | if (memcmp(buf, split2, strlen(split2))) { | |
134 | test_msg("Data in the buffer doesn't match what it should " | |
135 | "in the second split\n"); | |
136 | ret = -EINVAL; | |
137 | goto out; | |
138 | } | |
139 | ||
140 | key.offset = 1; | |
141 | /* Do it again so we test memmoving the other items in the leaf */ | |
142 | ret = btrfs_split_item(NULL, root, path, &key, 4); | |
143 | if (ret) { | |
144 | test_msg("Second split item failed %d\n", ret); | |
145 | goto out; | |
146 | } | |
147 | ||
148 | btrfs_item_key_to_cpu(eb, &key, 0); | |
149 | if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY || | |
150 | key.offset != 0) { | |
151 | test_msg("Invalid key at slot 0\n"); | |
152 | ret = -EINVAL; | |
153 | goto out; | |
154 | } | |
155 | ||
156 | item = btrfs_item_nr(0); | |
157 | if (btrfs_item_size(eb, item) != strlen(split3)) { | |
158 | test_msg("Invalid len in the first split\n"); | |
159 | ret = -EINVAL; | |
160 | goto out; | |
161 | } | |
162 | ||
163 | read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 0), | |
164 | strlen(split3)); | |
165 | if (memcmp(buf, split3, strlen(split3))) { | |
166 | test_msg("Data in the buffer doesn't match what it should " | |
167 | "in the third split"); | |
168 | ret = -EINVAL; | |
169 | goto out; | |
170 | } | |
171 | ||
172 | btrfs_item_key_to_cpu(eb, &key, 1); | |
173 | if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY || | |
174 | key.offset != 1) { | |
175 | test_msg("Invalid key at slot 1\n"); | |
176 | ret = -EINVAL; | |
177 | goto out; | |
178 | } | |
179 | ||
180 | item = btrfs_item_nr(1); | |
181 | if (btrfs_item_size(eb, item) != strlen(split4)) { | |
182 | test_msg("Invalid len in the second split\n"); | |
183 | ret = -EINVAL; | |
184 | goto out; | |
185 | } | |
186 | ||
187 | read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 1), | |
188 | strlen(split4)); | |
189 | if (memcmp(buf, split4, strlen(split4))) { | |
190 | test_msg("Data in the buffer doesn't match what it should " | |
191 | "in the fourth split\n"); | |
192 | ret = -EINVAL; | |
193 | goto out; | |
194 | } | |
195 | ||
196 | btrfs_item_key_to_cpu(eb, &key, 2); | |
197 | if (key.objectid != 0 || key.type != BTRFS_EXTENT_CSUM_KEY || | |
198 | key.offset != 3) { | |
199 | test_msg("Invalid key at slot 2\n"); | |
200 | ret = -EINVAL; | |
201 | goto out; | |
202 | } | |
203 | ||
204 | item = btrfs_item_nr(2); | |
205 | if (btrfs_item_size(eb, item) != strlen(split2)) { | |
206 | test_msg("Invalid len in the second split\n"); | |
207 | ret = -EINVAL; | |
208 | goto out; | |
209 | } | |
210 | ||
211 | read_extent_buffer(eb, buf, btrfs_item_ptr_offset(eb, 2), | |
212 | strlen(split2)); | |
213 | if (memcmp(buf, split2, strlen(split2))) { | |
214 | test_msg("Data in the buffer doesn't match what it should " | |
215 | "in the last chunk\n"); | |
216 | ret = -EINVAL; | |
217 | goto out; | |
218 | } | |
219 | out: | |
220 | btrfs_free_path(path); | |
221 | kfree(root); | |
222 | return ret; | |
223 | } | |
224 | ||
225 | int btrfs_test_extent_buffer_operations(void) | |
226 | { | |
227 | test_msg("Running extent buffer operation tests"); | |
228 | return test_btrfs_split_item(); | |
229 | } |