check/common.h

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public
   4  * License v2 as published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   9  * General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public
  12  * License along with this program; if not, write to the
  13  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14  * Boston, MA 021110-1307, USA.
  15  */
  16
  17 /*
  18  * Defines and function declarations for code shared by both lowmem and
  19  * original mode
  20  */
  21 #ifndef __BTRFS_CHECK_COMMON_H__
  22 #define __BTRFS_CHECK_COMMON_H__
  23
  24 #include <sys/stat.h>
  25 #include "ctree.h"
  26
  27 /*
  28  * Use for tree walk to walk through trees whose leaves/nodes can be shared
  29  * between different trees. (Namely subvolume/fs trees)
  30  */
  31 struct node_refs {
  32         u64 bytenr[BTRFS_MAX_LEVEL];
  33         u64 refs[BTRFS_MAX_LEVEL];
  34         int need_check[BTRFS_MAX_LEVEL];
  35         /* field for checking all trees */
  36         int checked[BTRFS_MAX_LEVEL];
  37         /* the corresponding extent should be marked as full backref or not */
  38         int full_backref[BTRFS_MAX_LEVEL];
  39 };
  40
  41 extern u64 bytes_used;
  42 extern u64 total_csum_bytes;
  43 extern u64 total_btree_bytes;
  44 extern u64 total_fs_tree_bytes;
  45 extern u64 total_extent_tree_bytes;
  46 extern u64 btree_space_waste;
  47 extern u64 data_bytes_allocated;
  48 extern u64 data_bytes_referenced;
  49 extern struct list_head duplicate_extents;
  50 extern struct list_head delete_items;
  51 extern int no_holes;
  52 extern int init_extent_tree;
  53 extern int check_data_csum;
  54 extern struct btrfs_fs_info *global_info;
  55 extern struct task_ctx ctx;
  56 extern struct cache_tree *roots_info_cache;
  57
  58 static inline u8 imode_to_type(u32 imode)
  59 {
  60 #define S_SHIFT 12
  61         static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = {
  62                 [S_IFREG >> S_SHIFT]    = BTRFS_FT_REG_FILE,
  63                 [S_IFDIR >> S_SHIFT]    = BTRFS_FT_DIR,
  64                 [S_IFCHR >> S_SHIFT]    = BTRFS_FT_CHRDEV,
  65                 [S_IFBLK >> S_SHIFT]    = BTRFS_FT_BLKDEV,
  66                 [S_IFIFO >> S_SHIFT]    = BTRFS_FT_FIFO,
  67                 [S_IFSOCK >> S_SHIFT]   = BTRFS_FT_SOCK,
  68                 [S_IFLNK >> S_SHIFT]    = BTRFS_FT_SYMLINK,
  69         };
  70
  71         return btrfs_type_by_mode[(imode & S_IFMT) >> S_SHIFT];
  72 #undef S_SHIFT
  73 }
  74
  75 static inline int fs_root_objectid(u64 objectid)
  76 {
  77         if (objectid == BTRFS_TREE_RELOC_OBJECTID ||
  78             objectid == BTRFS_DATA_RELOC_TREE_OBJECTID)
  79                 return 1;
  80         return is_fstree(objectid);
  81 }
  82
  83 #endif