/* * 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_SB_CHANGE 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_FSYNC_TS 35 #define XFS_TRANS_GROWFSRT_ALLOC 36 #define XFS_TRANS_GROWFSRT_ZERO 37 #define XFS_TRANS_GROWFSRT_FREE 38 #define XFS_TRANS_SWAPEXT 39 #define XFS_TRANS_CHECKPOINT 40 #define XFS_TRANS_ICREATE 41 #define XFS_TRANS_CREATE_TMPFILE 42 #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_SB_CHANGE, "SBCHANGE" }, \ { XFS_TRANS_DUMMY1, "DUMMY1" }, \ { XFS_TRANS_DUMMY2, "DUMMY2" }, \ { 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_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_CHECKPOINT, "CHECKPOINT" }, \ { XFS_TRANS_ICREATE, "ICREATE" }, \ { XFS_TRANS_CREATE_TMPFILE, "CREATE_TMPFILE" }, \ { 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 */ /* * 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__ */