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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_INODE_H__
19#define __XFS_INODE_H__
20
Christoph Hellwig347d1c02007-08-28 13:57:51 +100021struct xfs_dinode;
22struct xfs_dinode_core;
23
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025/*
Nathan Scotta844f452005-11-02 14:38:42 +110026 * Fork identifiers.
27 */
28#define XFS_DATA_FORK 0
29#define XFS_ATTR_FORK 1
30
31/*
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110032 * The following xfs_ext_irec_t struct introduces a second (top) level
33 * to the in-core extent allocation scheme. These structs are allocated
34 * in a contiguous block, creating an indirection array where each entry
35 * (irec) contains a pointer to a buffer of in-core extent records which
36 * it manages. Each extent buffer is 4k in size, since 4k is the system
37 * page size on Linux i386 and systems with larger page sizes don't seem
38 * to gain much, if anything, by using their native page size as the
39 * extent buffer size. Also, using 4k extent buffers everywhere provides
40 * a consistent interface for CXFS across different platforms.
41 *
42 * There is currently no limit on the number of irec's (extent lists)
43 * allowed, so heavily fragmented files may require an indirection array
44 * which spans multiple system pages of memory. The number of extents
45 * which would require this amount of contiguous memory is very large
46 * and should not cause problems in the foreseeable future. However,
47 * if the memory needed for the contiguous array ever becomes a problem,
48 * it is possible that a third level of indirection may be required.
49 */
50typedef struct xfs_ext_irec {
Christoph Hellwiga6f64d42007-08-16 16:23:40 +100051 xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110052 xfs_extnum_t er_extoff; /* extent offset in file */
53 xfs_extnum_t er_extcount; /* number of extents in page/block */
54} xfs_ext_irec_t;
55
56/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 * File incore extent information, present for each of data & attr forks.
58 */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110059#define XFS_IEXT_BUFSZ 4096
60#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
61#define XFS_INLINE_EXTS 2
62#define XFS_INLINE_DATA 32
Linus Torvalds1da177e2005-04-16 15:20:36 -070063typedef struct xfs_ifork {
64 int if_bytes; /* bytes in if_u1 */
65 int if_real_bytes; /* bytes allocated in if_u1 */
66 xfs_bmbt_block_t *if_broot; /* file's incore btree root */
67 short if_broot_bytes; /* bytes allocated for root */
68 unsigned char if_flags; /* per-fork flags */
69 unsigned char if_ext_max; /* max # of extent records */
70 xfs_extnum_t if_lastex; /* last if_extents used */
71 union {
Christoph Hellwiga6f64d42007-08-16 16:23:40 +100072 xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110073 xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 char *if_data; /* inline file data */
75 } if_u1;
76 union {
Christoph Hellwiga6f64d42007-08-16 16:23:40 +100077 xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 /* very small file extents */
79 char if_inline_data[XFS_INLINE_DATA];
80 /* very small file data */
81 xfs_dev_t if_rdev; /* dev number if special */
82 uuid_t if_uuid; /* mount point value */
83 } if_u2;
84} xfs_ifork_t;
85
86/*
87 * Flags for xfs_ichgtime().
88 */
89#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
90#define XFS_ICHGTIME_ACC 0x2 /* data fork access timestamp */
91#define XFS_ICHGTIME_CHG 0x4 /* inode field change timestamp */
92
93/*
94 * Per-fork incore inode flags.
95 */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110096#define XFS_IFINLINE 0x01 /* Inline data is read in */
97#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
98#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
99#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
101/*
Nathan Scottb12dd342006-03-17 17:26:04 +1100102 * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 */
Nathan Scottb12dd342006-03-17 17:26:04 +1100104#define XFS_IMAP_LOOKUP 0x1
105#define XFS_IMAP_BULKSTAT 0x2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107#ifdef __KERNEL__
108struct bhv_desc;
109struct cred;
110struct ktrace;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111struct xfs_buf;
112struct xfs_bmap_free;
113struct xfs_bmbt_irec;
114struct xfs_bmbt_block;
115struct xfs_inode;
116struct xfs_inode_log_item;
117struct xfs_mount;
118struct xfs_trans;
119struct xfs_dquot;
120
121#if defined(XFS_ILOCK_TRACE)
122#define XFS_ILOCK_KTRACE_SIZE 32
123extern ktrace_t *xfs_ilock_trace_buf;
124extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
125#else
126#define xfs_ilock_trace(i,n,f,ra)
127#endif
128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129typedef struct dm_attrs_s {
130 __uint32_t da_dmevmask; /* DMIG event mask */
131 __uint16_t da_dmstate; /* DMIG state info */
132 __uint16_t da_pad; /* DMIG extra padding */
133} dm_attrs_t;
134
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 * This is the xfs in-core inode structure.
137 * Most of the on-disk inode is embedded in the i_d field.
138 *
139 * The extent pointers/inline file space, however, are managed
140 * separately. The memory for this information is pointed to by
141 * the if_u1 unions depending on the type of the data.
142 * This is used to linearize the array of extents for fast in-core
143 * access. This is used until the file's number of extents
144 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
145 * are accessed through the buffer cache.
146 *
147 * Other state kept in the in-core inode is used for identification,
148 * locking, transactional updating, etc of the inode.
149 *
150 * Generally, we do not want to hold the i_rlock while holding the
151 * i_ilock. Hierarchy is i_iolock followed by i_rlock.
152 *
153 * xfs_iptr_t contains all the inode fields upto and including the
154 * i_mnext and i_mprev fields, it is used as a marker in the inode
155 * chain off the mount structure by xfs_sync calls.
156 */
157
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000158typedef struct xfs_ictimestamp {
159 __int32_t t_sec; /* timestamp seconds */
160 __int32_t t_nsec; /* timestamp nanoseconds */
161} xfs_ictimestamp_t;
162
163/*
164 * NOTE: This structure must be kept identical to struct xfs_dinode_core
165 * in xfs_dinode.h except for the endianess annotations.
166 */
167typedef struct xfs_icdinode {
168 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
169 __uint16_t di_mode; /* mode and type of file */
170 __int8_t di_version; /* inode version */
171 __int8_t di_format; /* format of di_c data */
172 __uint16_t di_onlink; /* old number of links to file */
173 __uint32_t di_uid; /* owner's user id */
174 __uint32_t di_gid; /* owner's group id */
175 __uint32_t di_nlink; /* number of links to file */
176 __uint16_t di_projid; /* owner's project id */
177 __uint8_t di_pad[8]; /* unused, zeroed space */
178 __uint16_t di_flushiter; /* incremented on flush */
179 xfs_ictimestamp_t di_atime; /* time last accessed */
180 xfs_ictimestamp_t di_mtime; /* time last modified */
181 xfs_ictimestamp_t di_ctime; /* time created/inode modified */
182 xfs_fsize_t di_size; /* number of bytes in file */
183 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
184 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
185 xfs_extnum_t di_nextents; /* number of extents in data fork */
186 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
187 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
188 __int8_t di_aformat; /* format of attr fork's data */
189 __uint32_t di_dmevmask; /* DMIG event mask */
190 __uint16_t di_dmstate; /* DMIG state info */
191 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
192 __uint32_t di_gen; /* generation number */
193} xfs_icdinode_t;
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195typedef struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 struct xfs_inode *ip_mnext; /* next inode in mount list */
197 struct xfs_inode *ip_mprev; /* ptr to prev inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 struct xfs_mount *ip_mount; /* fs mount struct ptr */
199} xfs_iptr_t;
200
201typedef struct xfs_inode {
202 /* Inode linking and identification information. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 struct xfs_inode *i_mnext; /* next inode in mount list */
204 struct xfs_inode *i_mprev; /* ptr to prev inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 struct xfs_mount *i_mount; /* fs mount struct ptr */
206 struct list_head i_reclaim; /* reclaim list */
Christoph Hellwig0a74cd12007-08-29 11:53:12 +1000207 bhv_vnode_t *i_vnode; /* vnode backpointer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 struct xfs_dquot *i_udquot; /* user dquot */
209 struct xfs_dquot *i_gdquot; /* group dquot */
210
211 /* Inode location stuff */
212 xfs_ino_t i_ino; /* inode number (agno/agino)*/
213 xfs_daddr_t i_blkno; /* blkno of inode buffer */
214 ushort i_len; /* len of inode buffer */
215 ushort i_boffset; /* off of inode in buffer */
216
217 /* Extent information. */
218 xfs_ifork_t *i_afp; /* attribute fork pointer */
219 xfs_ifork_t i_df; /* data fork */
220
221 /* Transaction and locking information. */
222 struct xfs_trans *i_transp; /* ptr to owning transaction*/
223 struct xfs_inode_log_item *i_itemp; /* logging information */
224 mrlock_t i_lock; /* inode lock */
225 mrlock_t i_iolock; /* inode IO lock */
226 sema_t i_flock; /* inode flush lock */
227 atomic_t i_pincount; /* inode pin count */
228 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
David Chinnerf273ab82006-09-28 11:06:03 +1000229 spinlock_t i_flags_lock; /* inode i_flags lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 /* Miscellaneous state. */
231 unsigned short i_flags; /* see defined flags below */
232 unsigned char i_update_core; /* timestamps/size is dirty */
233 unsigned char i_update_size; /* di_size field is dirty */
234 unsigned int i_gen; /* generation count */
235 unsigned int i_delayed_blks; /* count of delay alloc blks */
236
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000237 xfs_icdinode_t i_d; /* most of ondisk inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
Lachlan McIlroyba87ea62007-05-08 13:49:46 +1000239 xfs_fsize_t i_size; /* in-memory size */
Christoph Hellwig613d7042007-10-11 17:44:08 +1000240 xfs_fsize_t i_new_size; /* size when write completes */
Christoph Hellwigb677c212007-08-29 11:46:28 +1000241 atomic_t i_iocount; /* outstanding I/O count */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 /* Trace buffers per inode. */
Lachlan McIlroycf441ee2008-02-07 16:42:19 +1100243#ifdef XFS_INODE_TRACE
Christoph Hellwig1543d792007-08-29 11:46:47 +1000244 struct ktrace *i_trace; /* general inode trace */
245#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246#ifdef XFS_BMAP_TRACE
247 struct ktrace *i_xtrace; /* inode extent list trace */
248#endif
249#ifdef XFS_BMBT_TRACE
250 struct ktrace *i_btrace; /* inode bmap btree trace */
251#endif
252#ifdef XFS_RW_TRACE
253 struct ktrace *i_rwtrace; /* inode read/write trace */
254#endif
255#ifdef XFS_ILOCK_TRACE
256 struct ktrace *i_lock_trace; /* inode lock/unlock trace */
257#endif
258#ifdef XFS_DIR2_TRACE
259 struct ktrace *i_dir_trace; /* inode directory trace */
260#endif
261} xfs_inode_t;
262
Lachlan McIlroyba87ea62007-05-08 13:49:46 +1000263#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
264 (ip)->i_size : (ip)->i_d.di_size;
David Chinner7a18c382006-11-11 18:04:54 +1100265
266/*
267 * i_flags helper functions
268 */
269static inline void
270__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
271{
272 ip->i_flags |= flags;
273}
274
275static inline void
276xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
277{
278 spin_lock(&ip->i_flags_lock);
279 __xfs_iflags_set(ip, flags);
280 spin_unlock(&ip->i_flags_lock);
281}
282
283static inline void
284xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
285{
286 spin_lock(&ip->i_flags_lock);
287 ip->i_flags &= ~flags;
288 spin_unlock(&ip->i_flags_lock);
289}
290
291static inline int
292__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
293{
294 return (ip->i_flags & flags);
295}
296
297static inline int
298xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
299{
300 int ret;
301 spin_lock(&ip->i_flags_lock);
302 ret = __xfs_iflags_test(ip, flags);
303 spin_unlock(&ip->i_flags_lock);
304 return ret;
305}
Christoph Hellwig09262b42007-08-29 11:44:50 +1000306
307static inline int
308xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
309{
310 int ret;
311
312 spin_lock(&ip->i_flags_lock);
313 ret = ip->i_flags & flags;
314 if (ret)
315 ip->i_flags &= ~flags;
316 spin_unlock(&ip->i_flags_lock);
317 return ret;
318}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319#endif /* __KERNEL__ */
320
321
322/*
323 * Fork handling.
324 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Christoph Hellwig45ba5982007-12-07 14:07:20 +1100326#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
327#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
328
329#define XFS_IFORK_PTR(ip,w) \
330 ((w) == XFS_DATA_FORK ? \
331 &(ip)->i_df : \
332 (ip)->i_afp)
333#define XFS_IFORK_DSIZE(ip) \
334 (XFS_IFORK_Q(ip) ? \
335 XFS_IFORK_BOFF(ip) : \
336 XFS_LITINO((ip)->i_mount))
337#define XFS_IFORK_ASIZE(ip) \
338 (XFS_IFORK_Q(ip) ? \
339 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
340 0)
341#define XFS_IFORK_SIZE(ip,w) \
342 ((w) == XFS_DATA_FORK ? \
343 XFS_IFORK_DSIZE(ip) : \
344 XFS_IFORK_ASIZE(ip))
345#define XFS_IFORK_FORMAT(ip,w) \
346 ((w) == XFS_DATA_FORK ? \
347 (ip)->i_d.di_format : \
348 (ip)->i_d.di_aformat)
349#define XFS_IFORK_FMT_SET(ip,w,n) \
350 ((w) == XFS_DATA_FORK ? \
351 ((ip)->i_d.di_format = (n)) : \
352 ((ip)->i_d.di_aformat = (n)))
353#define XFS_IFORK_NEXTENTS(ip,w) \
354 ((w) == XFS_DATA_FORK ? \
355 (ip)->i_d.di_nextents : \
356 (ip)->i_d.di_anextents)
357#define XFS_IFORK_NEXT_SET(ip,w,n) \
358 ((w) == XFS_DATA_FORK ? \
359 ((ip)->i_d.di_nextents = (n)) : \
360 ((ip)->i_d.di_anextents = (n)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
362#ifdef __KERNEL__
363
364/*
365 * In-core inode flags.
366 */
367#define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */
368#define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */
369#define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */
370#define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */
371#define XFS_ISTALE 0x0010 /* inode has been staled */
372#define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */
373#define XFS_INEW 0x0040
David Chinner2a82b8b2007-07-11 11:09:12 +1000374#define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */
Christoph Hellwigb3aea4e2007-08-29 11:44:37 +1000375#define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */
376 /* to the Linux inode state. */
377#define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
379/*
380 * Flags for inode locking.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000381 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
382 * 1<<16 - 1<<32-1 -- lockdep annotation (integers)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 */
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000384#define XFS_IOLOCK_EXCL (1<<0)
385#define XFS_IOLOCK_SHARED (1<<1)
386#define XFS_ILOCK_EXCL (1<<2)
387#define XFS_ILOCK_SHARED (1<<3)
388#define XFS_IUNLOCK_NONOTIFY (1<<4)
389/* #define XFS_IOLOCK_NESTED (1<<5) */
390#define XFS_EXTENT_TOKEN_RD (1<<6)
391#define XFS_SIZE_TOKEN_RD (1<<7)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392#define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000393#define XFS_WILLLEND (1<<8) /* Always acquire tokens for lending */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394#define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND)
395#define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND)
396#define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000397/* TODO:XFS_SIZE_TOKEN_WANT (1<<9) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000399#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
400 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \
401 | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD \
402 | XFS_WILLLEND)
403
404/*
405 * Flags for lockdep annotations.
406 *
407 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
408 * (ie directory operations that require locking a directory inode and
409 * an entry inode). The first inode gets locked with this flag so it
410 * gets a lockdep subclass of 1 and the second lock will have a lockdep
411 * subclass of 0.
412 *
David Chinner0f1145c2007-06-29 17:26:09 +1000413 * XFS_LOCK_INUMORDER - for locking several inodes at the some time
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000414 * with xfs_lock_inodes(). This flag is used as the starting subclass
415 * and each subsequent lock acquired will increment the subclass by one.
416 * So the first lock acquired will have a lockdep subclass of 2, the
David Chinner0f1145c2007-06-29 17:26:09 +1000417 * second lock will have a lockdep subclass of 3, and so on. It is
418 * the responsibility of the class builder to shift this to the correct
419 * portion of the lock_mode lockdep mask.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000420 */
David Chinner0f1145c2007-06-29 17:26:09 +1000421#define XFS_LOCK_PARENT 1
422#define XFS_LOCK_INUMORDER 2
423
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000424#define XFS_IOLOCK_SHIFT 16
David Chinner0f1145c2007-06-29 17:26:09 +1000425#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000426
427#define XFS_ILOCK_SHIFT 24
David Chinner0f1145c2007-06-29 17:26:09 +1000428#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000429
430#define XFS_IOLOCK_DEP_MASK 0x00ff0000
431#define XFS_ILOCK_DEP_MASK 0xff000000
432#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
433
434#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
435#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436
437/*
438 * Flags for xfs_iflush()
439 */
440#define XFS_IFLUSH_DELWRI_ELSE_SYNC 1
441#define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2
442#define XFS_IFLUSH_SYNC 3
443#define XFS_IFLUSH_ASYNC 4
444#define XFS_IFLUSH_DELWRI 5
David Chinnera3f74ff2008-03-06 13:43:42 +1100445#define XFS_IFLUSH_ASYNC_NOBLOCK 6
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
447/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 * Flags for xfs_itruncate_start().
449 */
450#define XFS_ITRUNC_DEFINITE 0x1
451#define XFS_ITRUNC_MAYBE 0x2
452
Christoph Hellwig739bfb22007-08-29 10:58:01 +1000453#define XFS_ITOV(ip) ((ip)->i_vnode)
454#define XFS_ITOV_NULL(ip) ((ip)->i_vnode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456/*
457 * For multiple groups support: if S_ISGID bit is set in the parent
458 * directory, group of new file is set to that of the parent, and
459 * new subdirectory gets S_ISGID bit from parent.
460 */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000461#define XFS_INHERIT_GID(pip) \
462 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
463 ((pip)->i_d.di_mode & S_ISGID))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
465/*
Nathan Scott745b1f472006-09-28 11:02:23 +1000466 * Flags for xfs_iget()
467 */
468#define XFS_IGET_CREATE 0x1
469#define XFS_IGET_BULKSTAT 0x2
470
471/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 * xfs_iget.c prototypes.
473 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474void xfs_ihash_init(struct xfs_mount *);
475void xfs_ihash_free(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
477 struct xfs_trans *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
479 uint, uint, xfs_inode_t **, xfs_daddr_t);
480void xfs_iput(xfs_inode_t *, uint);
481void xfs_iput_new(xfs_inode_t *, uint);
482void xfs_ilock(xfs_inode_t *, uint);
483int xfs_ilock_nowait(xfs_inode_t *, uint);
484void xfs_iunlock(xfs_inode_t *, uint);
485void xfs_ilock_demote(xfs_inode_t *, uint);
486void xfs_iflock(xfs_inode_t *);
487int xfs_iflock_nowait(xfs_inode_t *);
488uint xfs_ilock_map_shared(xfs_inode_t *);
489void xfs_iunlock_map_shared(xfs_inode_t *, uint);
490void xfs_ifunlock(xfs_inode_t *);
491void xfs_ireclaim(xfs_inode_t *);
492int xfs_finish_reclaim(xfs_inode_t *, int, int);
493int xfs_finish_reclaim_all(struct xfs_mount *, int);
494
495/*
496 * xfs_inode.c prototypes.
497 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000499 xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **,
David Chinnera3f74ff2008-03-06 13:43:42 +1100500 xfs_daddr_t, uint, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
Nathan Scott745b1f472006-09-28 11:02:23 +1000502 xfs_inode_t **, xfs_daddr_t, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
Nathan Scott31b084a2005-05-05 13:25:00 -0700504int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
505 xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
506 int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000507void xfs_dinode_from_disk(struct xfs_icdinode *,
508 struct xfs_dinode_core *);
509void xfs_dinode_to_disk(struct xfs_dinode_core *,
510 struct xfs_icdinode *);
511
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512uint xfs_ip2xflags(struct xfs_inode *);
Christoph Hellwig45ba5982007-12-07 14:07:20 +1100513uint xfs_dic2xflags(struct xfs_dinode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
515 struct xfs_bmap_free *);
Lachlan McIlroyd3cf2092007-05-08 13:49:27 +1000516int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
518 xfs_fsize_t, int, int);
519int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
520int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *);
521void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *,
522 xfs_fsize_t, int);
523
524void xfs_idestroy_fork(xfs_inode_t *, int);
525void xfs_idestroy(xfs_inode_t *);
526void xfs_idata_realloc(xfs_inode_t *, int, int);
527void xfs_iextract(xfs_inode_t *);
528void xfs_iext_realloc(xfs_inode_t *, int, int);
529void xfs_iroot_realloc(xfs_inode_t *, int, int);
530void xfs_ipin(xfs_inode_t *);
531void xfs_iunpin(xfs_inode_t *);
532int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int);
533int xfs_iflush(xfs_inode_t *, uint);
Christoph Hellwigefa80272005-06-21 15:37:17 +1000534void xfs_iflush_all(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535void xfs_ichgtime(xfs_inode_t *, int);
536xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
537void xfs_lock_inodes(xfs_inode_t **, int, int, uint);
538
Christoph Hellwig42fe2b12006-01-11 15:35:17 +1100539void xfs_synchronize_atime(xfs_inode_t *);
David Chinner5d51eff2007-11-23 16:29:18 +1100540void xfs_mark_inode_dirty_sync(xfs_inode_t *);
Christoph Hellwig42fe2b12006-01-11 15:35:17 +1100541
Christoph Hellwiga6f64d42007-08-16 16:23:40 +1000542xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100543void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
544 xfs_bmbt_irec_t *);
545void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100546void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100547void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
548void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
549void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100550void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100551void xfs_iext_realloc_direct(xfs_ifork_t *, int);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100552void xfs_iext_realloc_indirect(xfs_ifork_t *, int);
553void xfs_iext_indirect_to_direct(xfs_ifork_t *);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100554void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
555void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
556void xfs_iext_destroy(xfs_ifork_t *);
Christoph Hellwiga6f64d42007-08-16 16:23:40 +1000557xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100558xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
559xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
560void xfs_iext_irec_init(xfs_ifork_t *);
561xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
562void xfs_iext_irec_remove(xfs_ifork_t *, int);
563void xfs_iext_irec_compact(xfs_ifork_t *);
564void xfs_iext_irec_compact_pages(xfs_ifork_t *);
565void xfs_iext_irec_compact_full(xfs_ifork_t *);
566void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
569
570#ifdef DEBUG
571void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t);
572#else /* DEBUG */
573#define xfs_isize_check(mp, ip, isize)
574#endif /* DEBUG */
575
576#if defined(DEBUG)
577void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
578#else
579#define xfs_inobp_check(mp, bp)
580#endif /* DEBUG */
581
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582extern struct kmem_zone *xfs_ifork_zone;
583extern struct kmem_zone *xfs_inode_zone;
584extern struct kmem_zone *xfs_ili_zone;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
586#endif /* __KERNEL__ */
587
588#endif /* __XFS_INODE_H__ */