btrfs-progs/check/mode-lowmem.h

/*
 * 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 lowmem mode check.
 */
#ifndef __BTRFS_CHECK_MODE_LOWMEM_H__
#define __BTRFS_CHECK_MODE_LOWMEM_H__

#define ROOT_DIR_ERROR		(1<<1)	/* bad ROOT_DIR */
#define DIR_ITEM_MISSING	(1<<2)	/* DIR_ITEM not found */
#define DIR_ITEM_MISMATCH	(1<<3)	/* DIR_ITEM found but not match */
#define INODE_REF_MISSING	(1<<4)	/* INODE_REF/INODE_EXTREF not found */
#define INODE_ITEM_MISSING	(1<<5)	/* INODE_ITEM not found */
#define INODE_ITEM_MISMATCH	(1<<6)	/* INODE_ITEM found but not match */
#define FILE_EXTENT_ERROR	(1<<7)	/* bad FILE_EXTENT */
#define ODD_CSUM_ITEM		(1<<8)	/* CSUM_ITEM error */
#define CSUM_ITEM_MISSING	(1<<9)	/* CSUM_ITEM not found */
#define LINK_COUNT_ERROR	(1<<10)	/* INODE_ITEM nlink count error */
#define NBYTES_ERROR		(1<<11)	/* INODE_ITEM nbytes count error */
#define ISIZE_ERROR		(1<<12)	/* INODE_ITEM size count error */
#define ORPHAN_ITEM		(1<<13) /* INODE_ITEM no reference */
#define NO_INODE_ITEM		(1<<14) /* no inode_item */
#define LAST_ITEM		(1<<15)	/* Complete this tree traversal */
#define ROOT_REF_MISSING	(1<<16)	/* ROOT_REF not found */
#define ROOT_REF_MISMATCH	(1<<17)	/* ROOT_REF found but not match */
#define DIR_INDEX_MISSING       (1<<18) /* INODE_INDEX not found */
#define DIR_INDEX_MISMATCH      (1<<19) /* INODE_INDEX found but not match */
#define DIR_COUNT_AGAIN         (1<<20) /* DIR isize should be recalculated */
#define BG_ACCOUNTING_ERROR     (1<<21) /* Block group accounting error */
#define FATAL_ERROR             (1<<22) /* Fatal bit for errno */
#define INODE_FLAGS_ERROR	(1<<23) /* Invalid inode flags */
#define DIR_ITEM_HASH_MISMATCH	(1<<24) /* Dir item hash mismatch */
#define INODE_MODE_ERROR	(1<<25) /* Bad inode mode */
#define INVALID_GENERATION	(1<<26)	/* Generation is too new */
#define SUPER_BYTES_USED_ERROR	(1<<27)	/* Super bytes_used is invalid */

/*
 * Error bit for low memory mode check.
 *
 * Currently no caller cares about it yet.  Just internal use for error
 * classification.
 */
#define BACKREF_MISSING		(1 << 0) /* Backref missing in extent tree */
#define BACKREF_MISMATCH	(1 << 1) /* Backref exists but does not match */
#define BYTES_UNALIGNED		(1 << 2) /* Some bytes are not aligned */
#define REFERENCER_MISSING	(1 << 3) /* Referencer not found */
#define REFERENCER_MISMATCH	(1 << 4) /* Referencer found but does not match */
#define CROSSING_STRIPE_BOUNDARY (1 << 4) /* For kernel scrub workaround */
#define ITEM_SIZE_MISMATCH	(1 << 5) /* Bad item size */
#define UNKNOWN_TYPE		(1 << 6) /* Unknown type */
#define ACCOUNTING_MISMATCH	(1 << 7) /* Used space accounting error */
#define CHUNK_TYPE_MISMATCH	(1 << 8)

int check_fs_roots_lowmem(void);
int check_chunks_and_extents_lowmem(void);

#endif