214 lines
6.4 KiB
C
214 lines
6.4 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License v2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Defines and function declarations for code shared by both lowmem and
|
|
* original mode
|
|
*/
|
|
#ifndef __BTRFS_CHECK_MODE_COMMON_H__
|
|
#define __BTRFS_CHECK_MODE_COMMON_H__
|
|
|
|
#include "kerncompat.h"
|
|
#include <sys/stat.h>
|
|
#include <stdbool.h>
|
|
#include "kernel-lib/list.h"
|
|
#include "kernel-shared/ctree.h"
|
|
#include "common/messages.h"
|
|
|
|
struct btrfs_trans_handle;
|
|
struct extent_buffer;
|
|
|
|
#define FREE_SPACE_CACHE_INODE_MODE (0100600)
|
|
/*
|
|
* Use for tree walk to walk through trees whose leaves/nodes can be shared
|
|
* between different trees. (Namely subvolume/fs trees)
|
|
*/
|
|
struct node_refs {
|
|
u64 bytenr[BTRFS_MAX_LEVEL];
|
|
u64 refs[BTRFS_MAX_LEVEL];
|
|
int need_check[BTRFS_MAX_LEVEL];
|
|
/* field for checking all trees */
|
|
int checked[BTRFS_MAX_LEVEL];
|
|
/* the corresponding extent should be marked as full backref or not */
|
|
int full_backref[BTRFS_MAX_LEVEL];
|
|
};
|
|
|
|
enum task_position {
|
|
TASK_ROOT_ITEMS,
|
|
TASK_EXTENTS,
|
|
TASK_FREE_SPACE,
|
|
TASK_FS_ROOTS,
|
|
TASK_CSUMS,
|
|
TASK_ROOT_REFS,
|
|
TASK_QGROUPS,
|
|
TASK_NOTHING, /* has to be the last element */
|
|
};
|
|
|
|
struct task_ctx {
|
|
int progress_enabled;
|
|
enum task_position tp;
|
|
time_t start_time;
|
|
u64 item_count;
|
|
|
|
struct task_info *info;
|
|
};
|
|
|
|
extern u64 bytes_used;
|
|
extern u64 total_csum_bytes;
|
|
extern u64 total_btree_bytes;
|
|
extern u64 total_fs_tree_bytes;
|
|
extern u64 total_extent_tree_bytes;
|
|
extern u64 btree_space_waste;
|
|
extern u64 data_bytes_allocated;
|
|
extern u64 data_bytes_referenced;
|
|
extern struct list_head duplicate_extents;
|
|
extern struct list_head delete_items;
|
|
extern int no_holes;
|
|
extern int init_extent_tree;
|
|
extern int check_data_csum;
|
|
extern struct btrfs_fs_info *gfs_info;
|
|
extern struct task_ctx ctx;
|
|
extern struct cache_tree *roots_info_cache;
|
|
|
|
static inline u8 imode_to_type(u32 imode)
|
|
{
|
|
#define S_SHIFT 12
|
|
static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = {
|
|
[S_IFREG >> S_SHIFT] = BTRFS_FT_REG_FILE,
|
|
[S_IFDIR >> S_SHIFT] = BTRFS_FT_DIR,
|
|
[S_IFCHR >> S_SHIFT] = BTRFS_FT_CHRDEV,
|
|
[S_IFBLK >> S_SHIFT] = BTRFS_FT_BLKDEV,
|
|
[S_IFIFO >> S_SHIFT] = BTRFS_FT_FIFO,
|
|
[S_IFSOCK >> S_SHIFT] = BTRFS_FT_SOCK,
|
|
[S_IFLNK >> S_SHIFT] = BTRFS_FT_SYMLINK,
|
|
};
|
|
|
|
return btrfs_type_by_mode[(imode & S_IFMT) >> S_SHIFT];
|
|
#undef S_SHIFT
|
|
}
|
|
|
|
static inline int fs_root_objectid(u64 objectid)
|
|
{
|
|
if (objectid == BTRFS_TREE_RELOC_OBJECTID ||
|
|
objectid == BTRFS_DATA_RELOC_TREE_OBJECTID)
|
|
return 1;
|
|
return is_fstree(objectid);
|
|
}
|
|
|
|
int check_prealloc_extent_written(u64 disk_bytenr, u64 num_bytes);
|
|
int count_csum_range(u64 start, u64 len, u64 *found);
|
|
int insert_inode_item(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, u64 ino, u64 size,
|
|
u64 nbytes, u64 nlink, u32 mode);
|
|
int link_inode_to_lostfound(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_path *path,
|
|
u64 ino, char *namebuf, u32 name_len,
|
|
u8 filetype, u64 *ref_count);
|
|
void check_dev_size_alignment(u64 devid, u64 total_bytes, u32 sectorsize);
|
|
void reada_walk_down(struct btrfs_root *root, struct extent_buffer *node,
|
|
int slot);
|
|
int check_child_node(struct extent_buffer *parent, int slot,
|
|
struct extent_buffer *child);
|
|
void reset_cached_block_groups(void);
|
|
int pin_metadata_blocks(void);
|
|
int exclude_metadata_blocks(void);
|
|
void cleanup_excluded_extents(void);
|
|
int delete_corrupted_dir_item(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_key *di_key, char *namebuf,
|
|
u32 namelen);
|
|
int detect_imode(struct btrfs_root *root, struct btrfs_path *path,
|
|
u32 *imode_ret);
|
|
int reset_imode(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
|
struct btrfs_path *path, u64 ino, u32 mode);
|
|
int repair_imode_common(struct btrfs_root *root, struct btrfs_path *path);
|
|
int check_repair_free_space_inode(struct btrfs_path *path);
|
|
|
|
/*
|
|
* Check if the inode mode @imode is valid
|
|
*
|
|
* This check focuses on S_FTMT bits and unused bits.
|
|
* Sticky/setuid/setgid and regular owner/group/other bits won't cause
|
|
* any problem.
|
|
*/
|
|
static inline bool is_valid_imode(u32 imode)
|
|
{
|
|
if (imode & ~(S_IFMT | 07777))
|
|
return false;
|
|
|
|
/*
|
|
* S_IFMT is not bitmap, nor pure numbering sequence. Need per valid
|
|
* number check.
|
|
*/
|
|
imode &= S_IFMT;
|
|
if (imode != S_IFDIR && imode != S_IFCHR && imode != S_IFBLK &&
|
|
imode != S_IFREG && imode != S_IFIFO && imode != S_IFLNK &&
|
|
imode != S_IFSOCK)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
int recow_extent_buffer(struct btrfs_root *root, struct extent_buffer *eb);
|
|
|
|
static inline u32 btrfs_type_to_imode(u8 type)
|
|
{
|
|
static u32 imode_by_btrfs_type[] = {
|
|
[BTRFS_FT_REG_FILE] = S_IFREG,
|
|
[BTRFS_FT_DIR] = S_IFDIR,
|
|
[BTRFS_FT_CHRDEV] = S_IFCHR,
|
|
[BTRFS_FT_BLKDEV] = S_IFBLK,
|
|
[BTRFS_FT_FIFO] = S_IFIFO,
|
|
[BTRFS_FT_SOCK] = S_IFSOCK,
|
|
[BTRFS_FT_SYMLINK] = S_IFLNK,
|
|
};
|
|
|
|
return imode_by_btrfs_type[(type)];
|
|
}
|
|
|
|
int get_extent_item_generation(u64 bytenr, u64 *gen_ret);
|
|
|
|
/*
|
|
* Check tree block alignment for future subpage support.
|
|
*
|
|
* For subpage support, either nodesize is smaller than PAGE_SIZE, then tree
|
|
* block should not cross page boundary. (A)
|
|
* Or nodesize >= PAGE_SIZE, then it should be page aligned. (B)
|
|
*
|
|
* But here we have no idea the PAGE_SIZE could be, so here we play safe by
|
|
* requiring all tree blocks to be nodesize aligned.
|
|
*
|
|
* For 4K page size system, it always meets condition (B), thus we don't need
|
|
* to bother that much.
|
|
*/
|
|
static inline void btrfs_check_subpage_eb_alignment(struct btrfs_fs_info *info,
|
|
u64 start, u32 len)
|
|
{
|
|
if (!IS_ALIGNED(start, info->nodesize))
|
|
warning(
|
|
"tree block [%llu, %llu) is not nodesize aligned, may cause problem for 64K page system",
|
|
start, start + len);
|
|
}
|
|
|
|
int repair_dev_item_bytes_used(struct btrfs_fs_info *fs_info,
|
|
u64 devid, u64 bytes_used_expected);
|
|
|
|
int fill_csum_tree(struct btrfs_trans_handle *trans, bool search_fs_tree);
|
|
|
|
int check_and_repair_super_num_devs(struct btrfs_fs_info *fs_info);
|
|
|
|
#endif
|