1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2013 Fusion IO. All rights reserved.
7 #include <linux/mount.h>
8 #include <linux/pseudo_fs.h>
9 #include <linux/magic.h>
10 #include "btrfs-tests.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"
20 static struct vfsmount *test_mnt = NULL;
22 const char *test_error[] = {
23 [TEST_ALLOC_FS_INFO] = "cannot allocate fs_info",
24 [TEST_ALLOC_ROOT] = "cannot allocate root",
25 [TEST_ALLOC_EXTENT_BUFFER] = "cannot extent buffer",
26 [TEST_ALLOC_PATH] = "cannot allocate path",
27 [TEST_ALLOC_INODE] = "cannot allocate inode",
28 [TEST_ALLOC_BLOCK_GROUP] = "cannot allocate block group",
29 [TEST_ALLOC_EXTENT_MAP] = "cannot allocate extent map",
32 static const struct super_operations btrfs_test_super_ops = {
33 .alloc_inode = btrfs_alloc_inode,
34 .destroy_inode = btrfs_test_destroy_inode,
38 static int btrfs_test_init_fs_context(struct fs_context *fc)
40 struct pseudo_fs_context *ctx = init_pseudo(fc, BTRFS_TEST_MAGIC);
43 ctx->ops = &btrfs_test_super_ops;
47 static struct file_system_type test_type = {
48 .name = "btrfs_test_fs",
49 .init_fs_context = btrfs_test_init_fs_context,
50 .kill_sb = kill_anon_super,
53 struct inode *btrfs_new_test_inode(void)
57 inode = new_inode(test_mnt->mnt_sb);
61 inode->i_mode = S_IFREG;
62 BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
63 BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
64 BTRFS_I(inode)->location.offset = 0;
65 inode_init_owner(&init_user_ns, inode, NULL, S_IFREG);
70 static int btrfs_init_test_fs(void)
74 ret = register_filesystem(&test_type);
76 printk(KERN_ERR "btrfs: cannot register test file system\n");
80 test_mnt = kern_mount(&test_type);
81 if (IS_ERR(test_mnt)) {
82 printk(KERN_ERR "btrfs: cannot mount test file system\n");
83 unregister_filesystem(&test_type);
84 return PTR_ERR(test_mnt);
89 static void btrfs_destroy_test_fs(void)
91 kern_unmount(test_mnt);
92 unregister_filesystem(&test_type);
95 struct btrfs_device *btrfs_alloc_dummy_device(struct btrfs_fs_info *fs_info)
97 struct btrfs_device *dev;
99 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
101 return ERR_PTR(-ENOMEM);
103 extent_io_tree_init(NULL, &dev->alloc_state, 0, NULL);
104 INIT_LIST_HEAD(&dev->dev_list);
105 list_add(&dev->dev_list, &fs_info->fs_devices->devices);
110 static void btrfs_free_dummy_device(struct btrfs_device *dev)
112 extent_io_tree_release(&dev->alloc_state);
116 struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(u32 nodesize, u32 sectorsize)
118 struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info),
123 fs_info->fs_devices = kzalloc(sizeof(struct btrfs_fs_devices),
125 if (!fs_info->fs_devices) {
129 INIT_LIST_HEAD(&fs_info->fs_devices->devices);
131 fs_info->super_copy = kzalloc(sizeof(struct btrfs_super_block),
133 if (!fs_info->super_copy) {
134 kfree(fs_info->fs_devices);
139 btrfs_init_fs_info(fs_info);
141 fs_info->nodesize = nodesize;
142 fs_info->sectorsize = sectorsize;
143 fs_info->sectorsize_bits = ilog2(sectorsize);
144 set_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
146 test_mnt->mnt_sb->s_fs_info = fs_info;
151 void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)
154 struct extent_buffer *eb;
155 struct btrfs_device *dev, *tmp;
160 if (WARN_ON(!test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO,
161 &fs_info->fs_state)))
164 test_mnt->mnt_sb->s_fs_info = NULL;
166 xa_for_each(&fs_info->extent_buffers, index, eb) {
167 free_extent_buffer_stale(eb);
170 btrfs_mapping_tree_free(&fs_info->mapping_tree);
171 list_for_each_entry_safe(dev, tmp, &fs_info->fs_devices->devices,
173 btrfs_free_dummy_device(dev);
175 btrfs_free_qgroup_config(fs_info);
176 btrfs_free_fs_roots(fs_info);
177 kfree(fs_info->super_copy);
178 btrfs_check_leaked_roots(fs_info);
179 btrfs_extent_buffer_leak_debug_check(fs_info);
180 kfree(fs_info->fs_devices);
184 void btrfs_free_dummy_root(struct btrfs_root *root)
188 /* Will be freed by btrfs_free_fs_roots */
189 if (WARN_ON(test_bit(BTRFS_ROOT_REGISTERED, &root->state)))
191 btrfs_global_root_delete(root);
192 btrfs_put_root(root);
195 struct btrfs_block_group *
196 btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info,
197 unsigned long length)
199 struct btrfs_block_group *cache;
201 cache = kzalloc(sizeof(*cache), GFP_KERNEL);
204 cache->free_space_ctl = kzalloc(sizeof(*cache->free_space_ctl),
206 if (!cache->free_space_ctl) {
212 cache->length = length;
213 cache->full_stripe_len = fs_info->sectorsize;
214 cache->fs_info = fs_info;
216 INIT_LIST_HEAD(&cache->list);
217 INIT_LIST_HEAD(&cache->cluster_list);
218 INIT_LIST_HEAD(&cache->bg_list);
219 btrfs_init_free_space_ctl(cache, cache->free_space_ctl);
220 mutex_init(&cache->free_space_lock);
225 void btrfs_free_dummy_block_group(struct btrfs_block_group *cache)
229 __btrfs_remove_free_space_cache(cache->free_space_ctl);
230 kfree(cache->free_space_ctl);
234 void btrfs_init_dummy_trans(struct btrfs_trans_handle *trans,
235 struct btrfs_fs_info *fs_info)
237 memset(trans, 0, sizeof(*trans));
239 trans->type = __TRANS_DUMMY;
240 trans->fs_info = fs_info;
243 int btrfs_run_sanity_tests(void)
246 u32 sectorsize, nodesize;
247 u32 test_sectorsize[] = {
250 ret = btrfs_init_test_fs();
253 for (i = 0; i < ARRAY_SIZE(test_sectorsize); i++) {
254 sectorsize = test_sectorsize[i];
255 for (nodesize = sectorsize;
256 nodesize <= BTRFS_MAX_METADATA_BLOCKSIZE;
258 pr_info("BTRFS: selftest: sectorsize: %u nodesize: %u\n",
259 sectorsize, nodesize);
260 ret = btrfs_test_free_space_cache(sectorsize, nodesize);
263 ret = btrfs_test_extent_buffer_operations(sectorsize,
267 ret = btrfs_test_extent_io(sectorsize, nodesize);
270 ret = btrfs_test_inodes(sectorsize, nodesize);
273 ret = btrfs_test_qgroups(sectorsize, nodesize);
276 ret = btrfs_test_free_space_tree(sectorsize, nodesize);
281 ret = btrfs_test_extent_map();
284 btrfs_destroy_test_fs();