check/mode-lowmem.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 lowmem mode check.
  19  */
  20 #ifndef __BTRFS_CHECK_MODE_LOWMEM_H__
  21 #define __BTRFS_CHECK_MODE_LOWMEM_H__
  22
  23 #include "check/mode-common.h"
  24
  25 #define ROOT_DIR_ERROR          (1<<1)  /* bad ROOT_DIR */
  26 #define DIR_ITEM_MISSING        (1<<2)  /* DIR_ITEM not found */
  27 #define DIR_ITEM_MISMATCH       (1<<3)  /* DIR_ITEM found but not match */
  28 #define INODE_REF_MISSING       (1<<4)  /* INODE_REF/INODE_EXTREF not found */
  29 #define INODE_ITEM_MISSING      (1<<5)  /* INODE_ITEM not found */
  30 #define INODE_ITEM_MISMATCH     (1<<6)  /* INODE_ITEM found but not match */
  31 #define FILE_EXTENT_ERROR       (1<<7)  /* bad FILE_EXTENT */
  32 #define ODD_CSUM_ITEM           (1<<8)  /* CSUM_ITEM error */
  33 #define CSUM_ITEM_MISSING       (1<<9)  /* CSUM_ITEM not found */
  34 #define LINK_COUNT_ERROR        (1<<10) /* INODE_ITEM nlink count error */
  35 #define NBYTES_ERROR            (1<<11) /* INODE_ITEM nbytes count error */
  36 #define ISIZE_ERROR             (1<<12) /* INODE_ITEM size count error */
  37 #define ORPHAN_ITEM             (1<<13) /* INODE_ITEM no reference */
  38 #define NO_INODE_ITEM           (1<<14) /* no inode_item */
  39 #define LAST_ITEM               (1<<15) /* Complete this tree traversal */
  40 #define ROOT_REF_MISSING        (1<<16) /* ROOT_REF not found */
  41 #define ROOT_REF_MISMATCH       (1<<17) /* ROOT_REF found but not match */
  42 #define DIR_INDEX_MISSING       (1<<18) /* INODE_INDEX not found */
  43 #define DIR_INDEX_MISMATCH      (1<<19) /* INODE_INDEX found but not match */
  44 #define DIR_COUNT_AGAIN         (1<<20) /* DIR isize should be recalculated */
  45 #define BG_ACCOUNTING_ERROR     (1<<21) /* Block group accounting error */
  46 #define FATAL_ERROR             (1<<22) /* Fatal bit for errno */
  47
  48 /*
  49  * Error bit for low memory mode check.
  50  *
  51  * Currently no caller cares about it yet.  Just internal use for error
  52  * classification.
  53  */
  54 #define BACKREF_MISSING         (1 << 0) /* Backref missing in extent tree */
  55 #define BACKREF_MISMATCH        (1 << 1) /* Backref exists but does not match */
  56 #define BYTES_UNALIGNED         (1 << 2) /* Some bytes are not aligned */
  57 #define REFERENCER_MISSING      (1 << 3) /* Referencer not found */
  58 #define REFERENCER_MISMATCH     (1 << 4) /* Referenceer found but does not match */
  59 #define CROSSING_STRIPE_BOUNDARY (1 << 4) /* For kernel scrub workaround */
  60 #define ITEM_SIZE_MISMATCH      (1 << 5) /* Bad item size */
  61 #define UNKNOWN_TYPE            (1 << 6) /* Unknown type */
  62 #define ACCOUNTING_MISMATCH     (1 << 7) /* Used space accounting error */
  63 #define CHUNK_TYPE_MISMATCH     (1 << 8)
  64
  65 int check_fs_roots_lowmem(struct btrfs_fs_info *fs_info);
  66 int check_chunks_and_extents_lowmem(struct btrfs_fs_info *fs_info);
  67
  68 #endif