245 lines
8.5 KiB
C
245 lines
8.5 KiB
C
/*
|
|
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
|
|
* Copyright (c) 2013 Red Hat, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would 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 the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_SHARED_H__
|
|
#define __XFS_SHARED_H__
|
|
|
|
/*
|
|
* Definitions shared between kernel and userspace that don't fit into any other
|
|
* header file that is shared with userspace.
|
|
*/
|
|
struct xfs_ifork;
|
|
struct xfs_buf;
|
|
struct xfs_buf_ops;
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
struct xfs_inode;
|
|
|
|
/*
|
|
* Buffer verifier operations are widely used, including userspace tools
|
|
*/
|
|
extern const struct xfs_buf_ops xfs_agf_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agi_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agf_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agfl_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_allocbt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_bmbt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_da3_node_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_dquot_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_symlink_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agi_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_inobt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_inode_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
|
|
extern const struct xfs_buf_ops xfs_dquot_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_sb_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_symlink_buf_ops;
|
|
|
|
/*
|
|
* Transaction types. Used to distinguish types of buffers. These never reach
|
|
* the log.
|
|
*/
|
|
#define XFS_TRANS_SETATTR_NOT_SIZE 1
|
|
#define XFS_TRANS_SETATTR_SIZE 2
|
|
#define XFS_TRANS_INACTIVE 3
|
|
#define XFS_TRANS_CREATE 4
|
|
#define XFS_TRANS_CREATE_TRUNC 5
|
|
#define XFS_TRANS_TRUNCATE_FILE 6
|
|
#define XFS_TRANS_REMOVE 7
|
|
#define XFS_TRANS_LINK 8
|
|
#define XFS_TRANS_RENAME 9
|
|
#define XFS_TRANS_MKDIR 10
|
|
#define XFS_TRANS_RMDIR 11
|
|
#define XFS_TRANS_SYMLINK 12
|
|
#define XFS_TRANS_SET_DMATTRS 13
|
|
#define XFS_TRANS_GROWFS 14
|
|
#define XFS_TRANS_STRAT_WRITE 15
|
|
#define XFS_TRANS_DIOSTRAT 16
|
|
/* 17 was XFS_TRANS_WRITE_SYNC */
|
|
#define XFS_TRANS_WRITEID 18
|
|
#define XFS_TRANS_ADDAFORK 19
|
|
#define XFS_TRANS_ATTRINVAL 20
|
|
#define XFS_TRANS_ATRUNCATE 21
|
|
#define XFS_TRANS_ATTR_SET 22
|
|
#define XFS_TRANS_ATTR_RM 23
|
|
#define XFS_TRANS_ATTR_FLAG 24
|
|
#define XFS_TRANS_CLEAR_AGI_BUCKET 25
|
|
#define XFS_TRANS_QM_SBCHANGE 26
|
|
/*
|
|
* Dummy entries since we use the transaction type to index into the
|
|
* trans_type[] in xlog_recover_print_trans_head()
|
|
*/
|
|
#define XFS_TRANS_DUMMY1 27
|
|
#define XFS_TRANS_DUMMY2 28
|
|
#define XFS_TRANS_QM_QUOTAOFF 29
|
|
#define XFS_TRANS_QM_DQALLOC 30
|
|
#define XFS_TRANS_QM_SETQLIM 31
|
|
#define XFS_TRANS_QM_DQCLUSTER 32
|
|
#define XFS_TRANS_QM_QINOCREATE 33
|
|
#define XFS_TRANS_QM_QUOTAOFF_END 34
|
|
#define XFS_TRANS_SB_UNIT 35
|
|
#define XFS_TRANS_FSYNC_TS 36
|
|
#define XFS_TRANS_GROWFSRT_ALLOC 37
|
|
#define XFS_TRANS_GROWFSRT_ZERO 38
|
|
#define XFS_TRANS_GROWFSRT_FREE 39
|
|
#define XFS_TRANS_SWAPEXT 40
|
|
#define XFS_TRANS_SB_COUNT 41
|
|
#define XFS_TRANS_CHECKPOINT 42
|
|
#define XFS_TRANS_ICREATE 43
|
|
#define XFS_TRANS_TYPE_MAX 43
|
|
/* new transaction types need to be reflected in xfs_logprint(8) */
|
|
|
|
#define XFS_TRANS_TYPES \
|
|
{ XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \
|
|
{ XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
|
|
{ XFS_TRANS_INACTIVE, "INACTIVE" }, \
|
|
{ XFS_TRANS_CREATE, "CREATE" }, \
|
|
{ XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
|
|
{ XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
|
|
{ XFS_TRANS_REMOVE, "REMOVE" }, \
|
|
{ XFS_TRANS_LINK, "LINK" }, \
|
|
{ XFS_TRANS_RENAME, "RENAME" }, \
|
|
{ XFS_TRANS_MKDIR, "MKDIR" }, \
|
|
{ XFS_TRANS_RMDIR, "RMDIR" }, \
|
|
{ XFS_TRANS_SYMLINK, "SYMLINK" }, \
|
|
{ XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \
|
|
{ XFS_TRANS_GROWFS, "GROWFS" }, \
|
|
{ XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \
|
|
{ XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \
|
|
{ XFS_TRANS_WRITEID, "WRITEID" }, \
|
|
{ XFS_TRANS_ADDAFORK, "ADDAFORK" }, \
|
|
{ XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \
|
|
{ XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \
|
|
{ XFS_TRANS_ATTR_SET, "ATTR_SET" }, \
|
|
{ XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
|
|
{ XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
|
|
{ XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
|
|
{ XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
|
|
{ XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
|
|
{ XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
|
|
{ XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
|
|
{ XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
|
|
{ XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
|
|
{ XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
|
|
{ XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
|
|
{ XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
|
|
{ XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
|
|
{ XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
|
|
{ XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
|
|
{ XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
|
|
{ XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
|
|
{ XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \
|
|
{ XFS_TRANS_DUMMY1, "DUMMY1" }, \
|
|
{ XFS_TRANS_DUMMY2, "DUMMY2" }, \
|
|
{ XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
|
|
|
|
/*
|
|
* This structure is used to track log items associated with
|
|
* a transaction. It points to the log item and keeps some
|
|
* flags to track the state of the log item. It also tracks
|
|
* the amount of space needed to log the item it describes
|
|
* once we get to commit processing (see xfs_trans_commit()).
|
|
*/
|
|
struct xfs_log_item_desc {
|
|
struct xfs_log_item *lid_item;
|
|
struct list_head lid_trans;
|
|
unsigned char lid_flags;
|
|
};
|
|
|
|
#define XFS_LID_DIRTY 0x1
|
|
|
|
/* log size calculation functions */
|
|
int xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes);
|
|
int xfs_log_calc_minimum_size(struct xfs_mount *);
|
|
|
|
|
|
/*
|
|
* Values for t_flags.
|
|
*/
|
|
#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
|
|
#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
|
|
#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
|
|
#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
|
|
#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
|
|
#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
|
|
#define XFS_TRANS_FREEZE_PROT 0x40 /* Transaction has elevated writer
|
|
count in superblock */
|
|
/*
|
|
* Values for call flags parameter.
|
|
*/
|
|
#define XFS_TRANS_RELEASE_LOG_RES 0x4
|
|
#define XFS_TRANS_ABORT 0x8
|
|
|
|
/*
|
|
* Field values for xfs_trans_mod_sb.
|
|
*/
|
|
#define XFS_TRANS_SB_ICOUNT 0x00000001
|
|
#define XFS_TRANS_SB_IFREE 0x00000002
|
|
#define XFS_TRANS_SB_FDBLOCKS 0x00000004
|
|
#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
|
|
#define XFS_TRANS_SB_FREXTENTS 0x00000010
|
|
#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
|
|
#define XFS_TRANS_SB_DBLOCKS 0x00000040
|
|
#define XFS_TRANS_SB_AGCOUNT 0x00000080
|
|
#define XFS_TRANS_SB_IMAXPCT 0x00000100
|
|
#define XFS_TRANS_SB_REXTSIZE 0x00000200
|
|
#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
|
|
#define XFS_TRANS_SB_RBLOCKS 0x00000800
|
|
#define XFS_TRANS_SB_REXTENTS 0x00001000
|
|
#define XFS_TRANS_SB_REXTSLOG 0x00002000
|
|
|
|
/*
|
|
* Here we centralize the specification of XFS meta-data buffer reference count
|
|
* values. This determines how hard the buffer cache tries to hold onto the
|
|
* buffer.
|
|
*/
|
|
#define XFS_AGF_REF 4
|
|
#define XFS_AGI_REF 4
|
|
#define XFS_AGFL_REF 3
|
|
#define XFS_INO_BTREE_REF 3
|
|
#define XFS_ALLOC_BTREE_REF 2
|
|
#define XFS_BMAP_BTREE_REF 2
|
|
#define XFS_DIR_BTREE_REF 2
|
|
#define XFS_INO_REF 2
|
|
#define XFS_ATTR_BTREE_REF 1
|
|
#define XFS_DQUOT_REF 1
|
|
|
|
/*
|
|
* Flags for xfs_trans_ichgtime().
|
|
*/
|
|
#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
|
|
#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
|
|
#define XFS_ICHGTIME_CREATE 0x4 /* inode create timestamp */
|
|
|
|
|
|
/*
|
|
* Symlink decoding/encoding functions
|
|
*/
|
|
int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen);
|
|
int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
|
|
uint32_t size, struct xfs_buf *bp);
|
|
bool xfs_symlink_hdr_ok(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
|
|
uint32_t size, struct xfs_buf *bp);
|
|
void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp,
|
|
struct xfs_inode *ip, struct xfs_ifork *ifp);
|
|
|
|
#endif /* __XFS_SHARED_H__ */
|