mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
301 lines
7.2 KiB
301 lines
7.2 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* Copyright (C) 2013 Fusion IO. All rights reserved. |
|
*/ |
|
|
|
#include <linux/fs.h> |
|
#include <linux/mount.h> |
|
#include <linux/pseudo_fs.h> |
|
#include <linux/magic.h> |
|
#include "btrfs-tests.h" |
|
#include "../ctree.h" |
|
#include "../free-space-cache.h" |
|
#include "../free-space-tree.h" |
|
#include "../transaction.h" |
|
#include "../volumes.h" |
|
#include "../disk-io.h" |
|
#include "../qgroup.h" |
|
#include "../block-group.h" |
|
|
|
static struct vfsmount *test_mnt = NULL; |
|
|
|
const char *test_error[] = { |
|
[TEST_ALLOC_FS_INFO] = "cannot allocate fs_info", |
|
[TEST_ALLOC_ROOT] = "cannot allocate root", |
|
[TEST_ALLOC_EXTENT_BUFFER] = "cannot extent buffer", |
|
[TEST_ALLOC_PATH] = "cannot allocate path", |
|
[TEST_ALLOC_INODE] = "cannot allocate inode", |
|
[TEST_ALLOC_BLOCK_GROUP] = "cannot allocate block group", |
|
[TEST_ALLOC_EXTENT_MAP] = "cannot allocate extent map", |
|
}; |
|
|
|
static const struct super_operations btrfs_test_super_ops = { |
|
.alloc_inode = btrfs_alloc_inode, |
|
.destroy_inode = btrfs_test_destroy_inode, |
|
}; |
|
|
|
|
|
static int btrfs_test_init_fs_context(struct fs_context *fc) |
|
{ |
|
struct pseudo_fs_context *ctx = init_pseudo(fc, BTRFS_TEST_MAGIC); |
|
if (!ctx) |
|
return -ENOMEM; |
|
ctx->ops = &btrfs_test_super_ops; |
|
return 0; |
|
} |
|
|
|
static struct file_system_type test_type = { |
|
.name = "btrfs_test_fs", |
|
.init_fs_context = btrfs_test_init_fs_context, |
|
.kill_sb = kill_anon_super, |
|
}; |
|
|
|
struct inode *btrfs_new_test_inode(void) |
|
{ |
|
struct inode *inode; |
|
|
|
inode = new_inode(test_mnt->mnt_sb); |
|
if (!inode) |
|
return NULL; |
|
|
|
inode->i_mode = S_IFREG; |
|
BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY; |
|
BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID; |
|
BTRFS_I(inode)->location.offset = 0; |
|
inode_init_owner(&init_user_ns, inode, NULL, S_IFREG); |
|
|
|
return inode; |
|
} |
|
|
|
static int btrfs_init_test_fs(void) |
|
{ |
|
int ret; |
|
|
|
ret = register_filesystem(&test_type); |
|
if (ret) { |
|
printk(KERN_ERR "btrfs: cannot register test file system\n"); |
|
return ret; |
|
} |
|
|
|
test_mnt = kern_mount(&test_type); |
|
if (IS_ERR(test_mnt)) { |
|
printk(KERN_ERR "btrfs: cannot mount test file system\n"); |
|
unregister_filesystem(&test_type); |
|
return PTR_ERR(test_mnt); |
|
} |
|
return 0; |
|
} |
|
|
|
static void btrfs_destroy_test_fs(void) |
|
{ |
|
kern_unmount(test_mnt); |
|
unregister_filesystem(&test_type); |
|
} |
|
|
|
struct btrfs_device *btrfs_alloc_dummy_device(struct btrfs_fs_info *fs_info) |
|
{ |
|
struct btrfs_device *dev; |
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
|
if (!dev) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
extent_io_tree_init(NULL, &dev->alloc_state, 0, NULL); |
|
INIT_LIST_HEAD(&dev->dev_list); |
|
list_add(&dev->dev_list, &fs_info->fs_devices->devices); |
|
|
|
return dev; |
|
} |
|
|
|
static void btrfs_free_dummy_device(struct btrfs_device *dev) |
|
{ |
|
extent_io_tree_release(&dev->alloc_state); |
|
kfree(dev); |
|
} |
|
|
|
struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(u32 nodesize, u32 sectorsize) |
|
{ |
|
struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info), |
|
GFP_KERNEL); |
|
|
|
if (!fs_info) |
|
return fs_info; |
|
fs_info->fs_devices = kzalloc(sizeof(struct btrfs_fs_devices), |
|
GFP_KERNEL); |
|
if (!fs_info->fs_devices) { |
|
kfree(fs_info); |
|
return NULL; |
|
} |
|
INIT_LIST_HEAD(&fs_info->fs_devices->devices); |
|
|
|
fs_info->super_copy = kzalloc(sizeof(struct btrfs_super_block), |
|
GFP_KERNEL); |
|
if (!fs_info->super_copy) { |
|
kfree(fs_info->fs_devices); |
|
kfree(fs_info); |
|
return NULL; |
|
} |
|
|
|
btrfs_init_fs_info(fs_info); |
|
|
|
fs_info->nodesize = nodesize; |
|
fs_info->sectorsize = sectorsize; |
|
fs_info->sectorsize_bits = ilog2(sectorsize); |
|
set_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); |
|
|
|
test_mnt->mnt_sb->s_fs_info = fs_info; |
|
|
|
return fs_info; |
|
} |
|
|
|
void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info) |
|
{ |
|
struct radix_tree_iter iter; |
|
void **slot; |
|
struct btrfs_device *dev, *tmp; |
|
|
|
if (!fs_info) |
|
return; |
|
|
|
if (WARN_ON(!test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
|
&fs_info->fs_state))) |
|
return; |
|
|
|
test_mnt->mnt_sb->s_fs_info = NULL; |
|
|
|
spin_lock(&fs_info->buffer_lock); |
|
radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) { |
|
struct extent_buffer *eb; |
|
|
|
eb = radix_tree_deref_slot_protected(slot, &fs_info->buffer_lock); |
|
if (!eb) |
|
continue; |
|
/* Shouldn't happen but that kind of thinking creates CVE's */ |
|
if (radix_tree_exception(eb)) { |
|
if (radix_tree_deref_retry(eb)) |
|
slot = radix_tree_iter_retry(&iter); |
|
continue; |
|
} |
|
slot = radix_tree_iter_resume(slot, &iter); |
|
spin_unlock(&fs_info->buffer_lock); |
|
free_extent_buffer_stale(eb); |
|
spin_lock(&fs_info->buffer_lock); |
|
} |
|
spin_unlock(&fs_info->buffer_lock); |
|
|
|
btrfs_mapping_tree_free(&fs_info->mapping_tree); |
|
list_for_each_entry_safe(dev, tmp, &fs_info->fs_devices->devices, |
|
dev_list) { |
|
btrfs_free_dummy_device(dev); |
|
} |
|
btrfs_free_qgroup_config(fs_info); |
|
btrfs_free_fs_roots(fs_info); |
|
kfree(fs_info->super_copy); |
|
btrfs_check_leaked_roots(fs_info); |
|
btrfs_extent_buffer_leak_debug_check(fs_info); |
|
kfree(fs_info->fs_devices); |
|
kfree(fs_info); |
|
} |
|
|
|
void btrfs_free_dummy_root(struct btrfs_root *root) |
|
{ |
|
if (!root) |
|
return; |
|
/* Will be freed by btrfs_free_fs_roots */ |
|
if (WARN_ON(test_bit(BTRFS_ROOT_IN_RADIX, &root->state))) |
|
return; |
|
btrfs_put_root(root); |
|
} |
|
|
|
struct btrfs_block_group * |
|
btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info, |
|
unsigned long length) |
|
{ |
|
struct btrfs_block_group *cache; |
|
|
|
cache = kzalloc(sizeof(*cache), GFP_KERNEL); |
|
if (!cache) |
|
return NULL; |
|
cache->free_space_ctl = kzalloc(sizeof(*cache->free_space_ctl), |
|
GFP_KERNEL); |
|
if (!cache->free_space_ctl) { |
|
kfree(cache); |
|
return NULL; |
|
} |
|
|
|
cache->start = 0; |
|
cache->length = length; |
|
cache->full_stripe_len = fs_info->sectorsize; |
|
cache->fs_info = fs_info; |
|
|
|
INIT_LIST_HEAD(&cache->list); |
|
INIT_LIST_HEAD(&cache->cluster_list); |
|
INIT_LIST_HEAD(&cache->bg_list); |
|
btrfs_init_free_space_ctl(cache, cache->free_space_ctl); |
|
mutex_init(&cache->free_space_lock); |
|
|
|
return cache; |
|
} |
|
|
|
void btrfs_free_dummy_block_group(struct btrfs_block_group *cache) |
|
{ |
|
if (!cache) |
|
return; |
|
__btrfs_remove_free_space_cache(cache->free_space_ctl); |
|
kfree(cache->free_space_ctl); |
|
kfree(cache); |
|
} |
|
|
|
void btrfs_init_dummy_trans(struct btrfs_trans_handle *trans, |
|
struct btrfs_fs_info *fs_info) |
|
{ |
|
memset(trans, 0, sizeof(*trans)); |
|
trans->transid = 1; |
|
trans->type = __TRANS_DUMMY; |
|
trans->fs_info = fs_info; |
|
} |
|
|
|
int btrfs_run_sanity_tests(void) |
|
{ |
|
int ret, i; |
|
u32 sectorsize, nodesize; |
|
u32 test_sectorsize[] = { |
|
PAGE_SIZE, |
|
}; |
|
ret = btrfs_init_test_fs(); |
|
if (ret) |
|
return ret; |
|
for (i = 0; i < ARRAY_SIZE(test_sectorsize); i++) { |
|
sectorsize = test_sectorsize[i]; |
|
for (nodesize = sectorsize; |
|
nodesize <= BTRFS_MAX_METADATA_BLOCKSIZE; |
|
nodesize <<= 1) { |
|
pr_info("BTRFS: selftest: sectorsize: %u nodesize: %u\n", |
|
sectorsize, nodesize); |
|
ret = btrfs_test_free_space_cache(sectorsize, nodesize); |
|
if (ret) |
|
goto out; |
|
ret = btrfs_test_extent_buffer_operations(sectorsize, |
|
nodesize); |
|
if (ret) |
|
goto out; |
|
ret = btrfs_test_extent_io(sectorsize, nodesize); |
|
if (ret) |
|
goto out; |
|
ret = btrfs_test_inodes(sectorsize, nodesize); |
|
if (ret) |
|
goto out; |
|
ret = btrfs_test_qgroups(sectorsize, nodesize); |
|
if (ret) |
|
goto out; |
|
ret = btrfs_test_free_space_tree(sectorsize, nodesize); |
|
if (ret) |
|
goto out; |
|
} |
|
} |
|
ret = btrfs_test_extent_map(); |
|
|
|
out: |
|
btrfs_destroy_test_fs(); |
|
return ret; |
|
}
|
|
|