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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/fs.h>
7#include <linux/mount.h>
8#include <linux/pseudo_fs.h>
9#include <linux/magic.h>
10#include "btrfs-tests.h"
11#include "../ctree.h"
12#include "../free-space-cache.h"
13#include "../free-space-tree.h"
14#include "../transaction.h"
15#include "../volumes.h"
16#include "../disk-io.h"
17#include "../qgroup.h"
18#include "../block-group.h"
19#include "../fs.h"
20
21static struct vfsmount *test_mnt = NULL;
22
23const char *test_error[] = {
24 [TEST_ALLOC_FS_INFO] = "cannot allocate fs_info",
25 [TEST_ALLOC_ROOT] = "cannot allocate root",
26 [TEST_ALLOC_EXTENT_BUFFER] = "cannot extent buffer",
27 [TEST_ALLOC_PATH] = "cannot allocate path",
28 [TEST_ALLOC_INODE] = "cannot allocate inode",
29 [TEST_ALLOC_BLOCK_GROUP] = "cannot allocate block group",
30 [TEST_ALLOC_EXTENT_MAP] = "cannot allocate extent map",
31};
32
33static const struct super_operations btrfs_test_super_ops = {
34 .alloc_inode = btrfs_alloc_inode,
35 .destroy_inode = btrfs_test_destroy_inode,
36};
37
38
39static int btrfs_test_init_fs_context(struct fs_context *fc)
40{
41 struct pseudo_fs_context *ctx = init_pseudo(fc, BTRFS_TEST_MAGIC);
42 if (!ctx)
43 return -ENOMEM;
44 ctx->ops = &btrfs_test_super_ops;
45 return 0;
46}
47
48static struct file_system_type test_type = {
49 .name = "btrfs_test_fs",
50 .init_fs_context = btrfs_test_init_fs_context,
51 .kill_sb = kill_anon_super,
52};
53
54struct inode *btrfs_new_test_inode(void)
55{
56 struct inode *inode;
57
58 inode = new_inode(test_mnt->mnt_sb);
59 if (!inode)
60 return NULL;
61
62 inode->i_mode = S_IFREG;
63 inode->i_ino = BTRFS_FIRST_FREE_OBJECTID;
64 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
65 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
66 BTRFS_I(inode)->location.offset = 0;
67 inode_init_owner(&init_user_ns, inode, NULL, S_IFREG);
68
69 return inode;
70}
71
72static int btrfs_init_test_fs(void)
73{
74 int ret;
75
76 ret = register_filesystem(&test_type);
77 if (ret) {
78 printk(KERN_ERR "btrfs: cannot register test file system\n");
79 return ret;
80 }
81
82 test_mnt = kern_mount(&test_type);
83 if (IS_ERR(test_mnt)) {
84 printk(KERN_ERR "btrfs: cannot mount test file system\n");
85 unregister_filesystem(&test_type);
86 return PTR_ERR(test_mnt);
87 }
88 return 0;
89}
90
91static void btrfs_destroy_test_fs(void)
92{
93 kern_unmount(test_mnt);
94 unregister_filesystem(&test_type);
95}
96
97struct btrfs_device *btrfs_alloc_dummy_device(struct btrfs_fs_info *fs_info)
98{
99 struct btrfs_device *dev;
100
101 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
102 if (!dev)
103 return ERR_PTR(-ENOMEM);
104
105 extent_io_tree_init(NULL, &dev->alloc_state, 0);
106 INIT_LIST_HEAD(&dev->dev_list);
107 list_add(&dev->dev_list, &fs_info->fs_devices->devices);
108
109 return dev;
110}
111
112static void btrfs_free_dummy_device(struct btrfs_device *dev)
113{
114 extent_io_tree_release(&dev->alloc_state);
115 kfree(dev);
116}
117
118struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(u32 nodesize, u32 sectorsize)
119{
120 struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info),
121 GFP_KERNEL);
122
123 if (!fs_info)
124 return fs_info;
125 fs_info->fs_devices = kzalloc(sizeof(struct btrfs_fs_devices),
126 GFP_KERNEL);
127 if (!fs_info->fs_devices) {
128 kfree(fs_info);
129 return NULL;
130 }
131 INIT_LIST_HEAD(&fs_info->fs_devices->devices);
132
133 fs_info->super_copy = kzalloc(sizeof(struct btrfs_super_block),
134 GFP_KERNEL);
135 if (!fs_info->super_copy) {
136 kfree(fs_info->fs_devices);
137 kfree(fs_info);
138 return NULL;
139 }
140
141 btrfs_init_fs_info(fs_info);
142
143 fs_info->nodesize = nodesize;
144 fs_info->sectorsize = sectorsize;
145 fs_info->sectorsize_bits = ilog2(sectorsize);
146 set_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
147
148 test_mnt->mnt_sb->s_fs_info = fs_info;
149
150 return fs_info;
151}
152
153void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)
154{
155 struct radix_tree_iter iter;
156 void **slot;
157 struct btrfs_device *dev, *tmp;
158
159 if (!fs_info)
160 return;
161
162 if (WARN_ON(!test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO,
163 &fs_info->fs_state)))
164 return;
165
166 test_mnt->mnt_sb->s_fs_info = NULL;
167
168 spin_lock(&fs_info->buffer_lock);
169 radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) {
170 struct extent_buffer *eb;
171
172 eb = radix_tree_deref_slot_protected(slot, &fs_info->buffer_lock);
173 if (!eb)
174 continue;
175 /* Shouldn't happen but that kind of thinking creates CVE's */
176 if (radix_tree_exception(eb)) {
177 if (radix_tree_deref_retry(eb))
178 slot = radix_tree_iter_retry(&iter);
179 continue;
180 }
181 slot = radix_tree_iter_resume(slot, &iter);
182 spin_unlock(&fs_info->buffer_lock);
183 free_extent_buffer_stale(eb);
184 spin_lock(&fs_info->buffer_lock);
185 }
186 spin_unlock(&fs_info->buffer_lock);
187
188 btrfs_mapping_tree_free(&fs_info->mapping_tree);
189 list_for_each_entry_safe(dev, tmp, &fs_info->fs_devices->devices,
190 dev_list) {
191 btrfs_free_dummy_device(dev);
192 }
193 btrfs_free_qgroup_config(fs_info);
194 btrfs_free_fs_roots(fs_info);
195 kfree(fs_info->super_copy);
196 btrfs_check_leaked_roots(fs_info);
197 btrfs_extent_buffer_leak_debug_check(fs_info);
198 kfree(fs_info->fs_devices);
199 kfree(fs_info);
200}
201
202void btrfs_free_dummy_root(struct btrfs_root *root)
203{
204 if (IS_ERR_OR_NULL(root))
205 return;
206 /* Will be freed by btrfs_free_fs_roots */
207 if (WARN_ON(test_bit(BTRFS_ROOT_IN_RADIX, &root->state)))
208 return;
209 btrfs_global_root_delete(root);
210 btrfs_put_root(root);
211}
212
213struct btrfs_block_group *
214btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info,
215 unsigned long length)
216{
217 struct btrfs_block_group *cache;
218
219 cache = kzalloc(sizeof(*cache), GFP_KERNEL);
220 if (!cache)
221 return NULL;
222 cache->free_space_ctl = kzalloc(sizeof(*cache->free_space_ctl),
223 GFP_KERNEL);
224 if (!cache->free_space_ctl) {
225 kfree(cache);
226 return NULL;
227 }
228
229 cache->start = 0;
230 cache->length = length;
231 cache->full_stripe_len = fs_info->sectorsize;
232 cache->fs_info = fs_info;
233
234 INIT_LIST_HEAD(&cache->list);
235 INIT_LIST_HEAD(&cache->cluster_list);
236 INIT_LIST_HEAD(&cache->bg_list);
237 btrfs_init_free_space_ctl(cache, cache->free_space_ctl);
238 mutex_init(&cache->free_space_lock);
239
240 return cache;
241}
242
243void btrfs_free_dummy_block_group(struct btrfs_block_group *cache)
244{
245 if (!cache)
246 return;
247 btrfs_remove_free_space_cache(cache);
248 kfree(cache->free_space_ctl);
249 kfree(cache);
250}
251
252void btrfs_init_dummy_trans(struct btrfs_trans_handle *trans,
253 struct btrfs_fs_info *fs_info)
254{
255 memset(trans, 0, sizeof(*trans));
256 trans->transid = 1;
257 trans->type = __TRANS_DUMMY;
258 trans->fs_info = fs_info;
259}
260
261int btrfs_run_sanity_tests(void)
262{
263 int ret, i;
264 u32 sectorsize, nodesize;
265 u32 test_sectorsize[] = {
266 PAGE_SIZE,
267 };
268 ret = btrfs_init_test_fs();
269 if (ret)
270 return ret;
271 for (i = 0; i < ARRAY_SIZE(test_sectorsize); i++) {
272 sectorsize = test_sectorsize[i];
273 for (nodesize = sectorsize;
274 nodesize <= BTRFS_MAX_METADATA_BLOCKSIZE;
275 nodesize <<= 1) {
276 pr_info("BTRFS: selftest: sectorsize: %u nodesize: %u\n",
277 sectorsize, nodesize);
278 ret = btrfs_test_free_space_cache(sectorsize, nodesize);
279 if (ret)
280 goto out;
281 ret = btrfs_test_extent_buffer_operations(sectorsize,
282 nodesize);
283 if (ret)
284 goto out;
285 ret = btrfs_test_extent_io(sectorsize, nodesize);
286 if (ret)
287 goto out;
288 ret = btrfs_test_inodes(sectorsize, nodesize);
289 if (ret)
290 goto out;
291 ret = btrfs_test_qgroups(sectorsize, nodesize);
292 if (ret)
293 goto out;
294 ret = btrfs_test_free_space_tree(sectorsize, nodesize);
295 if (ret)
296 goto out;
297 }
298 }
299 ret = btrfs_test_extent_map();
300
301out:
302 btrfs_destroy_test_fs();
303 return ret;
304}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
4 */
5
6#include <linux/fs.h>
7#include <linux/mount.h>
8#include <linux/pseudo_fs.h>
9#include <linux/magic.h>
10#include "btrfs-tests.h"
11#include "../ctree.h"
12#include "../free-space-cache.h"
13#include "../free-space-tree.h"
14#include "../transaction.h"
15#include "../volumes.h"
16#include "../disk-io.h"
17#include "../qgroup.h"
18#include "../block-group.h"
19#include "../fs.h"
20
21static struct vfsmount *test_mnt = NULL;
22
23const char *test_error[] = {
24 [TEST_ALLOC_FS_INFO] = "cannot allocate fs_info",
25 [TEST_ALLOC_ROOT] = "cannot allocate root",
26 [TEST_ALLOC_EXTENT_BUFFER] = "cannot extent buffer",
27 [TEST_ALLOC_PATH] = "cannot allocate path",
28 [TEST_ALLOC_INODE] = "cannot allocate inode",
29 [TEST_ALLOC_BLOCK_GROUP] = "cannot allocate block group",
30 [TEST_ALLOC_EXTENT_MAP] = "cannot allocate extent map",
31 [TEST_ALLOC_CHUNK_MAP] = "cannot allocate chunk map",
32 [TEST_ALLOC_IO_CONTEXT] = "cannot allocate io context",
33};
34
35static const struct super_operations btrfs_test_super_ops = {
36 .alloc_inode = btrfs_alloc_inode,
37 .destroy_inode = btrfs_test_destroy_inode,
38};
39
40
41static int btrfs_test_init_fs_context(struct fs_context *fc)
42{
43 struct pseudo_fs_context *ctx = init_pseudo(fc, BTRFS_TEST_MAGIC);
44 if (!ctx)
45 return -ENOMEM;
46 ctx->ops = &btrfs_test_super_ops;
47 return 0;
48}
49
50static struct file_system_type test_type = {
51 .name = "btrfs_test_fs",
52 .init_fs_context = btrfs_test_init_fs_context,
53 .kill_sb = kill_anon_super,
54};
55
56struct inode *btrfs_new_test_inode(void)
57{
58 struct inode *inode;
59
60 inode = new_inode(test_mnt->mnt_sb);
61 if (!inode)
62 return NULL;
63
64 inode->i_mode = S_IFREG;
65 btrfs_set_inode_number(BTRFS_I(inode), BTRFS_FIRST_FREE_OBJECTID);
66 inode_init_owner(&nop_mnt_idmap, inode, NULL, S_IFREG);
67
68 return inode;
69}
70
71static int btrfs_init_test_fs(void)
72{
73 int ret;
74
75 ret = register_filesystem(&test_type);
76 if (ret) {
77 printk(KERN_ERR "btrfs: cannot register test file system\n");
78 return ret;
79 }
80
81 test_mnt = kern_mount(&test_type);
82 if (IS_ERR(test_mnt)) {
83 printk(KERN_ERR "btrfs: cannot mount test file system\n");
84 unregister_filesystem(&test_type);
85 return PTR_ERR(test_mnt);
86 }
87 return 0;
88}
89
90static void btrfs_destroy_test_fs(void)
91{
92 kern_unmount(test_mnt);
93 unregister_filesystem(&test_type);
94}
95
96struct btrfs_device *btrfs_alloc_dummy_device(struct btrfs_fs_info *fs_info)
97{
98 struct btrfs_device *dev;
99
100 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
101 if (!dev)
102 return ERR_PTR(-ENOMEM);
103
104 extent_io_tree_init(fs_info, &dev->alloc_state, 0);
105 INIT_LIST_HEAD(&dev->dev_list);
106 list_add(&dev->dev_list, &fs_info->fs_devices->devices);
107
108 return dev;
109}
110
111static void btrfs_free_dummy_device(struct btrfs_device *dev)
112{
113 extent_io_tree_release(&dev->alloc_state);
114 kfree(dev);
115}
116
117struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(u32 nodesize, u32 sectorsize)
118{
119 struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info),
120 GFP_KERNEL);
121
122 if (!fs_info)
123 return fs_info;
124 fs_info->fs_devices = kzalloc(sizeof(struct btrfs_fs_devices),
125 GFP_KERNEL);
126 if (!fs_info->fs_devices) {
127 kfree(fs_info);
128 return NULL;
129 }
130 INIT_LIST_HEAD(&fs_info->fs_devices->devices);
131
132 fs_info->super_copy = kzalloc(sizeof(struct btrfs_super_block),
133 GFP_KERNEL);
134 if (!fs_info->super_copy) {
135 kfree(fs_info->fs_devices);
136 kfree(fs_info);
137 return NULL;
138 }
139
140 btrfs_init_fs_info(fs_info);
141
142 fs_info->nodesize = nodesize;
143 fs_info->sectorsize = sectorsize;
144 fs_info->sectorsize_bits = ilog2(sectorsize);
145 set_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
146
147 test_mnt->mnt_sb->s_fs_info = fs_info;
148
149 return fs_info;
150}
151
152void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)
153{
154 struct radix_tree_iter iter;
155 void **slot;
156 struct btrfs_device *dev, *tmp;
157
158 if (!fs_info)
159 return;
160
161 if (WARN_ON(!btrfs_is_testing(fs_info)))
162 return;
163
164 test_mnt->mnt_sb->s_fs_info = NULL;
165
166 spin_lock(&fs_info->buffer_lock);
167 radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) {
168 struct extent_buffer *eb;
169
170 eb = radix_tree_deref_slot_protected(slot, &fs_info->buffer_lock);
171 if (!eb)
172 continue;
173 /* Shouldn't happen but that kind of thinking creates CVE's */
174 if (radix_tree_exception(eb)) {
175 if (radix_tree_deref_retry(eb))
176 slot = radix_tree_iter_retry(&iter);
177 continue;
178 }
179 slot = radix_tree_iter_resume(slot, &iter);
180 spin_unlock(&fs_info->buffer_lock);
181 free_extent_buffer_stale(eb);
182 spin_lock(&fs_info->buffer_lock);
183 }
184 spin_unlock(&fs_info->buffer_lock);
185
186 btrfs_mapping_tree_free(fs_info);
187 list_for_each_entry_safe(dev, tmp, &fs_info->fs_devices->devices,
188 dev_list) {
189 btrfs_free_dummy_device(dev);
190 }
191 btrfs_free_qgroup_config(fs_info);
192 btrfs_free_fs_roots(fs_info);
193 kfree(fs_info->super_copy);
194 btrfs_check_leaked_roots(fs_info);
195 btrfs_extent_buffer_leak_debug_check(fs_info);
196 kfree(fs_info->fs_devices);
197 kfree(fs_info);
198}
199
200void btrfs_free_dummy_root(struct btrfs_root *root)
201{
202 if (IS_ERR_OR_NULL(root))
203 return;
204 /* Will be freed by btrfs_free_fs_roots */
205 if (WARN_ON(test_bit(BTRFS_ROOT_IN_RADIX, &root->state)))
206 return;
207 btrfs_global_root_delete(root);
208 btrfs_put_root(root);
209}
210
211struct btrfs_block_group *
212btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info,
213 unsigned long length)
214{
215 struct btrfs_block_group *cache;
216
217 cache = kzalloc(sizeof(*cache), GFP_KERNEL);
218 if (!cache)
219 return NULL;
220 cache->free_space_ctl = kzalloc(sizeof(*cache->free_space_ctl),
221 GFP_KERNEL);
222 if (!cache->free_space_ctl) {
223 kfree(cache);
224 return NULL;
225 }
226
227 cache->start = 0;
228 cache->length = length;
229 cache->full_stripe_len = fs_info->sectorsize;
230 cache->fs_info = fs_info;
231
232 INIT_LIST_HEAD(&cache->list);
233 INIT_LIST_HEAD(&cache->cluster_list);
234 INIT_LIST_HEAD(&cache->bg_list);
235 btrfs_init_free_space_ctl(cache, cache->free_space_ctl);
236 mutex_init(&cache->free_space_lock);
237
238 return cache;
239}
240
241void btrfs_free_dummy_block_group(struct btrfs_block_group *cache)
242{
243 if (!cache)
244 return;
245 btrfs_remove_free_space_cache(cache);
246 kfree(cache->free_space_ctl);
247 kfree(cache);
248}
249
250void btrfs_init_dummy_trans(struct btrfs_trans_handle *trans,
251 struct btrfs_fs_info *fs_info)
252{
253 memset(trans, 0, sizeof(*trans));
254 trans->transid = 1;
255 trans->type = __TRANS_DUMMY;
256 trans->fs_info = fs_info;
257}
258
259int btrfs_run_sanity_tests(void)
260{
261 int ret, i;
262 u32 sectorsize, nodesize;
263 u32 test_sectorsize[] = {
264 PAGE_SIZE,
265 };
266 ret = btrfs_init_test_fs();
267 if (ret)
268 return ret;
269 for (i = 0; i < ARRAY_SIZE(test_sectorsize); i++) {
270 sectorsize = test_sectorsize[i];
271 for (nodesize = sectorsize;
272 nodesize <= BTRFS_MAX_METADATA_BLOCKSIZE;
273 nodesize <<= 1) {
274 pr_info("BTRFS: selftest: sectorsize: %u nodesize: %u\n",
275 sectorsize, nodesize);
276 ret = btrfs_test_free_space_cache(sectorsize, nodesize);
277 if (ret)
278 goto out;
279 ret = btrfs_test_extent_buffer_operations(sectorsize,
280 nodesize);
281 if (ret)
282 goto out;
283 ret = btrfs_test_extent_io(sectorsize, nodesize);
284 if (ret)
285 goto out;
286 ret = btrfs_test_inodes(sectorsize, nodesize);
287 if (ret)
288 goto out;
289 ret = btrfs_test_qgroups(sectorsize, nodesize);
290 if (ret)
291 goto out;
292 ret = btrfs_test_free_space_tree(sectorsize, nodesize);
293 if (ret)
294 goto out;
295 ret = btrfs_test_raid_stripe_tree(sectorsize, nodesize);
296 if (ret)
297 goto out;
298 }
299 }
300 ret = btrfs_test_extent_map();
301
302out:
303 btrfs_destroy_test_fs();
304 return ret;
305}