| /* |
| * 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_CREATE_TMPFILE 44 |
| #define XFS_TRANS_TYPE_MAX 44 |
| /* 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_TMPFILE, "CREATE_TMPFILE" }, \ |
| { 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(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__ */ |
