| /* |
| * Copyright (c) 2000-2003,2005 Silicon Graphics, 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_INODE_H__ |
| #define __XFS_INODE_H__ |
| |
| /* |
| * Fork identifiers. |
| */ |
| #define XFS_DATA_FORK 0 |
| #define XFS_ATTR_FORK 1 |
| |
| /* |
| * File incore extent information, present for each of data & attr forks. |
| */ |
| #define XFS_INLINE_EXTS 2 |
| #define XFS_INLINE_DATA 32 |
| typedef struct xfs_ifork { |
| int if_bytes; /* bytes in if_u1 */ |
| int if_real_bytes; /* bytes allocated in if_u1 */ |
| xfs_bmbt_block_t *if_broot; /* file's incore btree root */ |
| short if_broot_bytes; /* bytes allocated for root */ |
| unsigned char if_flags; /* per-fork flags */ |
| unsigned char if_ext_max; /* max # of extent records */ |
| xfs_extnum_t if_lastex; /* last if_extents used */ |
| union { |
| xfs_bmbt_rec_t *if_extents; /* linear map file exts */ |
| char *if_data; /* inline file data */ |
| } if_u1; |
| union { |
| xfs_bmbt_rec_t if_inline_ext[XFS_INLINE_EXTS]; |
| /* very small file extents */ |
| char if_inline_data[XFS_INLINE_DATA]; |
| /* very small file data */ |
| xfs_dev_t if_rdev; /* dev number if special */ |
| uuid_t if_uuid; /* mount point value */ |
| } if_u2; |
| } xfs_ifork_t; |
| |
| /* |
| * Flags for xfs_ichgtime(). |
| */ |
| #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ |
| #define XFS_ICHGTIME_ACC 0x2 /* data fork access timestamp */ |
| #define XFS_ICHGTIME_CHG 0x4 /* inode field change timestamp */ |
| |
| /* |
| * Per-fork incore inode flags. |
| */ |
| #define XFS_IFINLINE 0x0001 /* Inline data is read in */ |
| #define XFS_IFEXTENTS 0x0002 /* All extent pointers are read in */ |
| #define XFS_IFBROOT 0x0004 /* i_broot points to the bmap b-tree root */ |
| |
| /* |
| * Flags for xfs_imap() and xfs_dilocate(). |
| */ |
| #define XFS_IMAP_LOOKUP 0x1 |
| |
| #ifdef __KERNEL__ |
| struct bhv_desc; |
| struct cred; |
| struct ktrace; |
| struct vnode; |
| struct xfs_buf; |
| struct xfs_bmap_free; |
| struct xfs_bmbt_irec; |
| struct xfs_bmbt_block; |
| struct xfs_inode; |
| struct xfs_inode_log_item; |
| struct xfs_mount; |
| struct xfs_trans; |
| struct xfs_dquot; |
| |
| #if defined(XFS_ILOCK_TRACE) |
| #define XFS_ILOCK_KTRACE_SIZE 32 |
| extern ktrace_t *xfs_ilock_trace_buf; |
| extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); |
| #else |
| #define xfs_ilock_trace(i,n,f,ra) |
| #endif |
| |
| typedef struct dm_attrs_s { |
| __uint32_t da_dmevmask; /* DMIG event mask */ |
| __uint16_t da_dmstate; /* DMIG state info */ |
| __uint16_t da_pad; /* DMIG extra padding */ |
| } dm_attrs_t; |
| |
| typedef struct xfs_iocore { |
| void *io_obj; /* pointer to container |
| * inode or dcxvn structure */ |
| struct xfs_mount *io_mount; /* fs mount struct ptr */ |
| #ifdef DEBUG |
| mrlock_t *io_lock; /* inode IO lock */ |
| mrlock_t *io_iolock; /* inode IO lock */ |
| #endif |
| |
| /* I/O state */ |
| xfs_fsize_t io_new_size; /* sz when write completes */ |
| |
| /* Miscellaneous state. */ |
| unsigned int io_flags; /* IO related flags */ |
| |
| /* DMAPI state */ |
| dm_attrs_t io_dmattrs; |
| |
| } xfs_iocore_t; |
| |
| #define io_dmevmask io_dmattrs.da_dmevmask |
| #define io_dmstate io_dmattrs.da_dmstate |
| |
| #define XFS_IO_INODE(io) ((xfs_inode_t *) ((io)->io_obj)) |
| #define XFS_IO_DCXVN(io) ((dcxvn_t *) ((io)->io_obj)) |
| |
| /* |
| * Flags in the flags field |
| */ |
| |
| #define XFS_IOCORE_RT 0x1 |
| |
| /* |
| * xfs_iocore prototypes |
| */ |
| |
| extern void xfs_iocore_inode_init(struct xfs_inode *); |
| extern void xfs_iocore_inode_reinit(struct xfs_inode *); |
| |
| |
| /* |
| * This is the type used in the xfs inode hash table. |
| * An array of these is allocated for each mounted |
| * file system to hash the inodes for that file system. |
| */ |
| typedef struct xfs_ihash { |
| struct xfs_inode *ih_next; |
| rwlock_t ih_lock; |
| uint ih_version; |
| } xfs_ihash_t; |
| |
| #define XFS_IHASH(mp,ino) ((mp)->m_ihash + (((uint)(ino)) % (mp)->m_ihsize)) |
| |
| /* |
| * This is the xfs inode cluster hash. This hash is used by xfs_iflush to |
| * find inodes that share a cluster and can be flushed to disk at the same |
| * time. |
| */ |
| typedef struct xfs_chashlist { |
| struct xfs_chashlist *chl_next; |
| struct xfs_inode *chl_ip; |
| xfs_daddr_t chl_blkno; /* starting block number of |
| * the cluster */ |
| struct xfs_buf *chl_buf; /* the inode buffer */ |
| } xfs_chashlist_t; |
| |
| typedef struct xfs_chash { |
| xfs_chashlist_t *ch_list; |
| lock_t ch_lock; |
| } xfs_chash_t; |
| |
| #define XFS_CHASH(mp,blk) ((mp)->m_chash + (((uint)blk) % (mp)->m_chsize)) |
| |
| |
| /* |
| * This is the xfs in-core inode structure. |
| * Most of the on-disk inode is embedded in the i_d field. |
| * |
| * The extent pointers/inline file space, however, are managed |
| * separately. The memory for this information is pointed to by |
| * the if_u1 unions depending on the type of the data. |
| * This is used to linearize the array of extents for fast in-core |
| * access. This is used until the file's number of extents |
| * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers |
| * are accessed through the buffer cache. |
| * |
| * Other state kept in the in-core inode is used for identification, |
| * locking, transactional updating, etc of the inode. |
| * |
| * Generally, we do not want to hold the i_rlock while holding the |
| * i_ilock. Hierarchy is i_iolock followed by i_rlock. |
| * |
| * xfs_iptr_t contains all the inode fields upto and including the |
| * i_mnext and i_mprev fields, it is used as a marker in the inode |
| * chain off the mount structure by xfs_sync calls. |
| */ |
| |
| typedef struct { |
| struct xfs_ihash *ip_hash; /* pointer to hash header */ |
| struct xfs_inode *ip_next; /* inode hash link forw */ |
| struct xfs_inode *ip_mnext; /* next inode in mount list */ |
| struct xfs_inode *ip_mprev; /* ptr to prev inode */ |
| struct xfs_inode **ip_prevp; /* ptr to prev i_next */ |
| struct xfs_mount *ip_mount; /* fs mount struct ptr */ |
| } xfs_iptr_t; |
| |
| typedef struct xfs_inode { |
| /* Inode linking and identification information. */ |
| struct xfs_ihash *i_hash; /* pointer to hash header */ |
| struct xfs_inode *i_next; /* inode hash link forw */ |
| struct xfs_inode *i_mnext; /* next inode in mount list */ |
| struct xfs_inode *i_mprev; /* ptr to prev inode */ |
| struct xfs_inode **i_prevp; /* ptr to prev i_next */ |
| struct xfs_mount *i_mount; /* fs mount struct ptr */ |
| struct list_head i_reclaim; /* reclaim list */ |
| struct bhv_desc i_bhv_desc; /* inode behavior descriptor*/ |
| struct xfs_dquot *i_udquot; /* user dquot */ |
| struct xfs_dquot *i_gdquot; /* group dquot */ |
| |
| /* Inode location stuff */ |
| xfs_ino_t i_ino; /* inode number (agno/agino)*/ |
| xfs_daddr_t i_blkno; /* blkno of inode buffer */ |
| ushort i_len; /* len of inode buffer */ |
| ushort i_boffset; /* off of inode in buffer */ |
| |
| /* Extent information. */ |
| xfs_ifork_t *i_afp; /* attribute fork pointer */ |
| xfs_ifork_t i_df; /* data fork */ |
| |
| /* Transaction and locking information. */ |
| struct xfs_trans *i_transp; /* ptr to owning transaction*/ |
| struct xfs_inode_log_item *i_itemp; /* logging information */ |
| mrlock_t i_lock; /* inode lock */ |
| mrlock_t i_iolock; /* inode IO lock */ |
| sema_t i_flock; /* inode flush lock */ |
| atomic_t i_pincount; /* inode pin count */ |
| wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ |
| #ifdef HAVE_REFCACHE |
| struct xfs_inode **i_refcache; /* ptr to entry in ref cache */ |
| struct xfs_inode *i_release; /* inode to unref */ |
| #endif |
| /* I/O state */ |
| xfs_iocore_t i_iocore; /* I/O core */ |
| |
| /* Miscellaneous state. */ |
| unsigned short i_flags; /* see defined flags below */ |
| unsigned char i_update_core; /* timestamps/size is dirty */ |
| unsigned char i_update_size; /* di_size field is dirty */ |
| unsigned int i_gen; /* generation count */ |
| unsigned int i_delayed_blks; /* count of delay alloc blks */ |
| |
| xfs_dinode_core_t i_d; /* most of ondisk inode */ |
| xfs_chashlist_t *i_chash; /* cluster hash list header */ |
| struct xfs_inode *i_cnext; /* cluster hash link forward */ |
| struct xfs_inode *i_cprev; /* cluster hash link backward */ |
| |
| /* Trace buffers per inode. */ |
| #ifdef XFS_BMAP_TRACE |
| struct ktrace *i_xtrace; /* inode extent list trace */ |
| #endif |
| #ifdef XFS_BMBT_TRACE |
| struct ktrace *i_btrace; /* inode bmap btree trace */ |
| #endif |
| #ifdef XFS_RW_TRACE |
| struct ktrace *i_rwtrace; /* inode read/write trace */ |
| #endif |
| #ifdef XFS_ILOCK_TRACE |
| struct ktrace *i_lock_trace; /* inode lock/unlock trace */ |
| #endif |
| #ifdef XFS_DIR2_TRACE |
| struct ktrace *i_dir_trace; /* inode directory trace */ |
| #endif |
| } xfs_inode_t; |
| |
| #endif /* __KERNEL__ */ |
| |
| |
| /* |
| * Fork handling. |
| */ |
| #define XFS_IFORK_PTR(ip,w) \ |
| ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp) |
| #define XFS_IFORK_Q(ip) XFS_CFORK_Q(&(ip)->i_d) |
| #define XFS_IFORK_DSIZE(ip) XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount) |
| #define XFS_IFORK_ASIZE(ip) XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount) |
| #define XFS_IFORK_SIZE(ip,w) XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w) |
| #define XFS_IFORK_FORMAT(ip,w) XFS_CFORK_FORMAT(&ip->i_d, w) |
| #define XFS_IFORK_FMT_SET(ip,w,n) XFS_CFORK_FMT_SET(&ip->i_d, w, n) |
| #define XFS_IFORK_NEXTENTS(ip,w) XFS_CFORK_NEXTENTS(&ip->i_d, w) |
| #define XFS_IFORK_NEXT_SET(ip,w,n) XFS_CFORK_NEXT_SET(&ip->i_d, w, n) |
| |
| |
| #ifdef __KERNEL__ |
| |
| /* |
| * In-core inode flags. |
| */ |
| #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ |
| #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ |
| #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ |
| #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ |
| #define XFS_ISTALE 0x0010 /* inode has been staled */ |
| #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ |
| #define XFS_INEW 0x0040 |
| |
| /* |
| * Flags for inode locking. |
| */ |
| #define XFS_IOLOCK_EXCL 0x001 |
| #define XFS_IOLOCK_SHARED 0x002 |
| #define XFS_ILOCK_EXCL 0x004 |
| #define XFS_ILOCK_SHARED 0x008 |
| #define XFS_IUNLOCK_NONOTIFY 0x010 |
| /* XFS_IOLOCK_NESTED 0x020 */ |
| #define XFS_EXTENT_TOKEN_RD 0x040 |
| #define XFS_SIZE_TOKEN_RD 0x080 |
| #define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) |
| #define XFS_WILLLEND 0x100 /* Always acquire tokens for lending */ |
| #define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND) |
| #define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND) |
| #define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND) |
| /* XFS_SIZE_TOKEN_WANT 0x200 */ |
| |
| #define XFS_LOCK_MASK \ |
| (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL | \ |
| XFS_ILOCK_SHARED | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD | \ |
| XFS_WILLLEND) |
| |
| /* |
| * Flags for xfs_iflush() |
| */ |
| #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 |
| #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 |
| #define XFS_IFLUSH_SYNC 3 |
| #define XFS_IFLUSH_ASYNC 4 |
| #define XFS_IFLUSH_DELWRI 5 |
| |
| /* |
| * Flags for xfs_itruncate_start(). |
| */ |
| #define XFS_ITRUNC_DEFINITE 0x1 |
| #define XFS_ITRUNC_MAYBE 0x2 |
| |
| #define XFS_ITOV(ip) BHV_TO_VNODE(XFS_ITOBHV(ip)) |
| #define XFS_ITOV_NULL(ip) BHV_TO_VNODE_NULL(XFS_ITOBHV(ip)) |
| #define XFS_ITOBHV(ip) ((struct bhv_desc *)(&((ip)->i_bhv_desc))) |
| #define XFS_BHVTOI(bhvp) ((xfs_inode_t *)((char *)(bhvp) - \ |
| (char *)&(((xfs_inode_t *)0)->i_bhv_desc))) |
| #define BHV_IS_XFS(bdp) (BHV_OPS(bdp) == &xfs_vnodeops) |
| |
| /* |
| * For multiple groups support: if S_ISGID bit is set in the parent |
| * directory, group of new file is set to that of the parent, and |
| * new subdirectory gets S_ISGID bit from parent. |
| */ |
| #define XFS_INHERIT_GID(pip, vfsp) \ |
| (((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID)) |
| |
| /* |
| * xfs_iget.c prototypes. |
| */ |
| |
| #define IGET_CREATE 1 |
| |
| void xfs_ihash_init(struct xfs_mount *); |
| void xfs_ihash_free(struct xfs_mount *); |
| void xfs_chash_init(struct xfs_mount *); |
| void xfs_chash_free(struct xfs_mount *); |
| xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, |
| struct xfs_trans *); |
| void xfs_inode_lock_init(xfs_inode_t *, struct vnode *); |
| int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
| uint, uint, xfs_inode_t **, xfs_daddr_t); |
| void xfs_iput(xfs_inode_t *, uint); |
| void xfs_iput_new(xfs_inode_t *, uint); |
| void xfs_ilock(xfs_inode_t *, uint); |
| int xfs_ilock_nowait(xfs_inode_t *, uint); |
| void xfs_iunlock(xfs_inode_t *, uint); |
| void xfs_ilock_demote(xfs_inode_t *, uint); |
| void xfs_iflock(xfs_inode_t *); |
| int xfs_iflock_nowait(xfs_inode_t *); |
| uint xfs_ilock_map_shared(xfs_inode_t *); |
| void xfs_iunlock_map_shared(xfs_inode_t *, uint); |
| void xfs_ifunlock(xfs_inode_t *); |
| void xfs_ireclaim(xfs_inode_t *); |
| int xfs_finish_reclaim(xfs_inode_t *, int, int); |
| int xfs_finish_reclaim_all(struct xfs_mount *, int); |
| |
| /* |
| * xfs_inode.c prototypes. |
| */ |
| int xfs_itobp(struct xfs_mount *, struct xfs_trans *, |
| xfs_inode_t *, xfs_dinode_t **, struct xfs_buf **, |
| xfs_daddr_t); |
| int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
| xfs_inode_t **, xfs_daddr_t); |
| int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); |
| int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, |
| xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, |
| int, struct xfs_buf **, boolean_t *, xfs_inode_t **); |
| void xfs_xlate_dinode_core(xfs_caddr_t, struct xfs_dinode_core *, |
| int); |
| uint xfs_ip2xflags(struct xfs_inode *); |
| uint xfs_dic2xflags(struct xfs_dinode_core *); |
| int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
| struct xfs_bmap_free *); |
| void xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); |
| int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, |
| xfs_fsize_t, int, int); |
| int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); |
| int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *); |
| void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *, |
| xfs_fsize_t, int); |
| |
| void xfs_idestroy_fork(xfs_inode_t *, int); |
| void xfs_idestroy(xfs_inode_t *); |
| void xfs_idata_realloc(xfs_inode_t *, int, int); |
| void xfs_iextract(xfs_inode_t *); |
| void xfs_iext_realloc(xfs_inode_t *, int, int); |
| void xfs_iroot_realloc(xfs_inode_t *, int, int); |
| void xfs_ipin(xfs_inode_t *); |
| void xfs_iunpin(xfs_inode_t *); |
| int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); |
| int xfs_iflush(xfs_inode_t *, uint); |
| void xfs_iflush_all(struct xfs_mount *); |
| int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *); |
| uint xfs_iroundup(uint); |
| void xfs_ichgtime(xfs_inode_t *, int); |
| xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); |
| void xfs_lock_inodes(xfs_inode_t **, int, int, uint); |
| |
| xfs_inode_t *xfs_vtoi(struct vnode *vp); |
| |
| void xfs_synchronize_atime(xfs_inode_t *); |
| |
| xfs_bmbt_rec_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); |
| void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, |
| xfs_bmbt_irec_t *); |
| void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); |
| void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); |
| void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); |
| void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); |
| void xfs_iext_realloc_direct(xfs_ifork_t *, int); |
| void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); |
| void xfs_iext_inline_to_direct(xfs_ifork_t *, int); |
| void xfs_iext_destroy(xfs_ifork_t *); |
| |
| #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
| |
| #ifdef DEBUG |
| void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t); |
| #else /* DEBUG */ |
| #define xfs_isize_check(mp, ip, isize) |
| #endif /* DEBUG */ |
| |
| #if defined(DEBUG) |
| void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); |
| #else |
| #define xfs_inobp_check(mp, bp) |
| #endif /* DEBUG */ |
| |
| extern struct kmem_zone *xfs_chashlist_zone; |
| extern struct kmem_zone *xfs_ifork_zone; |
| extern struct kmem_zone *xfs_inode_zone; |
| extern struct kmem_zone *xfs_ili_zone; |
| extern struct vnodeops xfs_vnodeops; |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* __XFS_INODE_H__ */ |