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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * 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. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * 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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_INODE_H__ | |
19 | #define __XFS_INODE_H__ | |
20 | ||
347d1c01 CH |
21 | struct xfs_dinode; |
22 | struct xfs_dinode_core; | |
23 | ||
24 | ||
a844f451 NS |
25 | /* |
26 | * Fork identifiers. | |
27 | */ | |
28 | #define XFS_DATA_FORK 0 | |
29 | #define XFS_ATTR_FORK 1 | |
30 | ||
0293ce3a MK |
31 | /* |
32 | * 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 | */ | |
50 | typedef struct xfs_ext_irec { | |
a6f64d4a | 51 | xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ |
0293ce3a MK |
52 | 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 | ||
1da177e4 LT |
56 | /* |
57 | * File incore extent information, present for each of data & attr forks. | |
58 | */ | |
0293ce3a MK |
59 | #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 | |
1da177e4 LT |
63 | typedef 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 { | |
a6f64d4a | 72 | xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ |
0293ce3a | 73 | xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ |
1da177e4 LT |
74 | char *if_data; /* inline file data */ |
75 | } if_u1; | |
76 | union { | |
a6f64d4a | 77 | xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; |
1da177e4 LT |
78 | /* 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 | */ | |
0293ce3a MK |
96 | #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 */ | |
1da177e4 LT |
100 | |
101 | /* | |
b12dd342 | 102 | * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate(). |
1da177e4 | 103 | */ |
b12dd342 NS |
104 | #define XFS_IMAP_LOOKUP 0x1 |
105 | #define XFS_IMAP_BULKSTAT 0x2 | |
1da177e4 | 106 | |
1da177e4 LT |
107 | #ifdef __KERNEL__ |
108 | struct bhv_desc; | |
67fcaa73 | 109 | struct bhv_vnode; |
1da177e4 LT |
110 | struct cred; |
111 | struct ktrace; | |
1da177e4 LT |
112 | struct xfs_buf; |
113 | struct xfs_bmap_free; | |
114 | struct xfs_bmbt_irec; | |
115 | struct xfs_bmbt_block; | |
116 | struct xfs_inode; | |
117 | struct xfs_inode_log_item; | |
118 | struct xfs_mount; | |
119 | struct xfs_trans; | |
120 | struct xfs_dquot; | |
121 | ||
122 | #if defined(XFS_ILOCK_TRACE) | |
123 | #define XFS_ILOCK_KTRACE_SIZE 32 | |
124 | extern ktrace_t *xfs_ilock_trace_buf; | |
125 | extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); | |
126 | #else | |
127 | #define xfs_ilock_trace(i,n,f,ra) | |
128 | #endif | |
129 | ||
1da177e4 LT |
130 | typedef struct dm_attrs_s { |
131 | __uint32_t da_dmevmask; /* DMIG event mask */ | |
132 | __uint16_t da_dmstate; /* DMIG state info */ | |
133 | __uint16_t da_pad; /* DMIG extra padding */ | |
134 | } dm_attrs_t; | |
135 | ||
136 | typedef struct xfs_iocore { | |
137 | void *io_obj; /* pointer to container | |
138 | * inode or dcxvn structure */ | |
139 | struct xfs_mount *io_mount; /* fs mount struct ptr */ | |
140 | #ifdef DEBUG | |
141 | mrlock_t *io_lock; /* inode IO lock */ | |
142 | mrlock_t *io_iolock; /* inode IO lock */ | |
143 | #endif | |
144 | ||
145 | /* I/O state */ | |
146 | xfs_fsize_t io_new_size; /* sz when write completes */ | |
147 | ||
148 | /* Miscellaneous state. */ | |
149 | unsigned int io_flags; /* IO related flags */ | |
150 | ||
151 | /* DMAPI state */ | |
152 | dm_attrs_t io_dmattrs; | |
153 | ||
154 | } xfs_iocore_t; | |
155 | ||
156 | #define io_dmevmask io_dmattrs.da_dmevmask | |
157 | #define io_dmstate io_dmattrs.da_dmstate | |
158 | ||
159 | #define XFS_IO_INODE(io) ((xfs_inode_t *) ((io)->io_obj)) | |
160 | #define XFS_IO_DCXVN(io) ((dcxvn_t *) ((io)->io_obj)) | |
161 | ||
162 | /* | |
163 | * Flags in the flags field | |
164 | */ | |
165 | ||
166 | #define XFS_IOCORE_RT 0x1 | |
167 | ||
168 | /* | |
169 | * xfs_iocore prototypes | |
170 | */ | |
171 | ||
172 | extern void xfs_iocore_inode_init(struct xfs_inode *); | |
173 | extern void xfs_iocore_inode_reinit(struct xfs_inode *); | |
174 | ||
175 | ||
176 | /* | |
177 | * This is the type used in the xfs inode hash table. | |
178 | * An array of these is allocated for each mounted | |
179 | * file system to hash the inodes for that file system. | |
180 | */ | |
181 | typedef struct xfs_ihash { | |
182 | struct xfs_inode *ih_next; | |
183 | rwlock_t ih_lock; | |
184 | uint ih_version; | |
185 | } xfs_ihash_t; | |
186 | ||
187 | #define XFS_IHASH(mp,ino) ((mp)->m_ihash + (((uint)(ino)) % (mp)->m_ihsize)) | |
188 | ||
189 | /* | |
190 | * This is the xfs inode cluster hash. This hash is used by xfs_iflush to | |
191 | * find inodes that share a cluster and can be flushed to disk at the same | |
192 | * time. | |
193 | */ | |
194 | typedef struct xfs_chashlist { | |
195 | struct xfs_chashlist *chl_next; | |
1fc5d959 | 196 | struct xfs_chashlist *chl_prev; |
1da177e4 LT |
197 | struct xfs_inode *chl_ip; |
198 | xfs_daddr_t chl_blkno; /* starting block number of | |
199 | * the cluster */ | |
200 | struct xfs_buf *chl_buf; /* the inode buffer */ | |
201 | } xfs_chashlist_t; | |
202 | ||
203 | typedef struct xfs_chash { | |
204 | xfs_chashlist_t *ch_list; | |
205 | lock_t ch_lock; | |
206 | } xfs_chash_t; | |
207 | ||
208 | #define XFS_CHASH(mp,blk) ((mp)->m_chash + (((uint)blk) % (mp)->m_chsize)) | |
209 | ||
210 | ||
211 | /* | |
212 | * This is the xfs in-core inode structure. | |
213 | * Most of the on-disk inode is embedded in the i_d field. | |
214 | * | |
215 | * The extent pointers/inline file space, however, are managed | |
216 | * separately. The memory for this information is pointed to by | |
217 | * the if_u1 unions depending on the type of the data. | |
218 | * This is used to linearize the array of extents for fast in-core | |
219 | * access. This is used until the file's number of extents | |
220 | * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers | |
221 | * are accessed through the buffer cache. | |
222 | * | |
223 | * Other state kept in the in-core inode is used for identification, | |
224 | * locking, transactional updating, etc of the inode. | |
225 | * | |
226 | * Generally, we do not want to hold the i_rlock while holding the | |
227 | * i_ilock. Hierarchy is i_iolock followed by i_rlock. | |
228 | * | |
229 | * xfs_iptr_t contains all the inode fields upto and including the | |
230 | * i_mnext and i_mprev fields, it is used as a marker in the inode | |
231 | * chain off the mount structure by xfs_sync calls. | |
232 | */ | |
233 | ||
347d1c01 CH |
234 | typedef struct xfs_ictimestamp { |
235 | __int32_t t_sec; /* timestamp seconds */ | |
236 | __int32_t t_nsec; /* timestamp nanoseconds */ | |
237 | } xfs_ictimestamp_t; | |
238 | ||
239 | /* | |
240 | * NOTE: This structure must be kept identical to struct xfs_dinode_core | |
241 | * in xfs_dinode.h except for the endianess annotations. | |
242 | */ | |
243 | typedef struct xfs_icdinode { | |
244 | __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ | |
245 | __uint16_t di_mode; /* mode and type of file */ | |
246 | __int8_t di_version; /* inode version */ | |
247 | __int8_t di_format; /* format of di_c data */ | |
248 | __uint16_t di_onlink; /* old number of links to file */ | |
249 | __uint32_t di_uid; /* owner's user id */ | |
250 | __uint32_t di_gid; /* owner's group id */ | |
251 | __uint32_t di_nlink; /* number of links to file */ | |
252 | __uint16_t di_projid; /* owner's project id */ | |
253 | __uint8_t di_pad[8]; /* unused, zeroed space */ | |
254 | __uint16_t di_flushiter; /* incremented on flush */ | |
255 | xfs_ictimestamp_t di_atime; /* time last accessed */ | |
256 | xfs_ictimestamp_t di_mtime; /* time last modified */ | |
257 | xfs_ictimestamp_t di_ctime; /* time created/inode modified */ | |
258 | xfs_fsize_t di_size; /* number of bytes in file */ | |
259 | xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ | |
260 | xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ | |
261 | xfs_extnum_t di_nextents; /* number of extents in data fork */ | |
262 | xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ | |
263 | __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ | |
264 | __int8_t di_aformat; /* format of attr fork's data */ | |
265 | __uint32_t di_dmevmask; /* DMIG event mask */ | |
266 | __uint16_t di_dmstate; /* DMIG state info */ | |
267 | __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ | |
268 | __uint32_t di_gen; /* generation number */ | |
269 | } xfs_icdinode_t; | |
270 | ||
1da177e4 LT |
271 | typedef struct { |
272 | struct xfs_ihash *ip_hash; /* pointer to hash header */ | |
273 | struct xfs_inode *ip_next; /* inode hash link forw */ | |
274 | struct xfs_inode *ip_mnext; /* next inode in mount list */ | |
275 | struct xfs_inode *ip_mprev; /* ptr to prev inode */ | |
276 | struct xfs_inode **ip_prevp; /* ptr to prev i_next */ | |
277 | struct xfs_mount *ip_mount; /* fs mount struct ptr */ | |
278 | } xfs_iptr_t; | |
279 | ||
280 | typedef struct xfs_inode { | |
281 | /* Inode linking and identification information. */ | |
282 | struct xfs_ihash *i_hash; /* pointer to hash header */ | |
283 | struct xfs_inode *i_next; /* inode hash link forw */ | |
284 | struct xfs_inode *i_mnext; /* next inode in mount list */ | |
285 | struct xfs_inode *i_mprev; /* ptr to prev inode */ | |
286 | struct xfs_inode **i_prevp; /* ptr to prev i_next */ | |
287 | struct xfs_mount *i_mount; /* fs mount struct ptr */ | |
288 | struct list_head i_reclaim; /* reclaim list */ | |
289 | struct bhv_desc i_bhv_desc; /* inode behavior descriptor*/ | |
290 | struct xfs_dquot *i_udquot; /* user dquot */ | |
291 | struct xfs_dquot *i_gdquot; /* group dquot */ | |
292 | ||
293 | /* Inode location stuff */ | |
294 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ | |
295 | xfs_daddr_t i_blkno; /* blkno of inode buffer */ | |
296 | ushort i_len; /* len of inode buffer */ | |
297 | ushort i_boffset; /* off of inode in buffer */ | |
298 | ||
299 | /* Extent information. */ | |
300 | xfs_ifork_t *i_afp; /* attribute fork pointer */ | |
301 | xfs_ifork_t i_df; /* data fork */ | |
302 | ||
303 | /* Transaction and locking information. */ | |
304 | struct xfs_trans *i_transp; /* ptr to owning transaction*/ | |
305 | struct xfs_inode_log_item *i_itemp; /* logging information */ | |
306 | mrlock_t i_lock; /* inode lock */ | |
307 | mrlock_t i_iolock; /* inode IO lock */ | |
308 | sema_t i_flock; /* inode flush lock */ | |
309 | atomic_t i_pincount; /* inode pin count */ | |
310 | wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ | |
f273ab84 | 311 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 LT |
312 | #ifdef HAVE_REFCACHE |
313 | struct xfs_inode **i_refcache; /* ptr to entry in ref cache */ | |
314 | struct xfs_inode *i_release; /* inode to unref */ | |
315 | #endif | |
316 | /* I/O state */ | |
317 | xfs_iocore_t i_iocore; /* I/O core */ | |
318 | ||
319 | /* Miscellaneous state. */ | |
320 | unsigned short i_flags; /* see defined flags below */ | |
321 | unsigned char i_update_core; /* timestamps/size is dirty */ | |
322 | unsigned char i_update_size; /* di_size field is dirty */ | |
323 | unsigned int i_gen; /* generation count */ | |
324 | unsigned int i_delayed_blks; /* count of delay alloc blks */ | |
325 | ||
347d1c01 | 326 | xfs_icdinode_t i_d; /* most of ondisk inode */ |
1da177e4 LT |
327 | xfs_chashlist_t *i_chash; /* cluster hash list header */ |
328 | struct xfs_inode *i_cnext; /* cluster hash link forward */ | |
329 | struct xfs_inode *i_cprev; /* cluster hash link backward */ | |
330 | ||
ba87ea69 | 331 | xfs_fsize_t i_size; /* in-memory size */ |
1da177e4 LT |
332 | /* Trace buffers per inode. */ |
333 | #ifdef XFS_BMAP_TRACE | |
334 | struct ktrace *i_xtrace; /* inode extent list trace */ | |
335 | #endif | |
336 | #ifdef XFS_BMBT_TRACE | |
337 | struct ktrace *i_btrace; /* inode bmap btree trace */ | |
338 | #endif | |
339 | #ifdef XFS_RW_TRACE | |
340 | struct ktrace *i_rwtrace; /* inode read/write trace */ | |
341 | #endif | |
342 | #ifdef XFS_ILOCK_TRACE | |
343 | struct ktrace *i_lock_trace; /* inode lock/unlock trace */ | |
344 | #endif | |
345 | #ifdef XFS_DIR2_TRACE | |
346 | struct ktrace *i_dir_trace; /* inode directory trace */ | |
347 | #endif | |
348 | } xfs_inode_t; | |
349 | ||
ba87ea69 LM |
350 | #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ |
351 | (ip)->i_size : (ip)->i_d.di_size; | |
7a18c386 DC |
352 | |
353 | /* | |
354 | * i_flags helper functions | |
355 | */ | |
356 | static inline void | |
357 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
358 | { | |
359 | ip->i_flags |= flags; | |
360 | } | |
361 | ||
362 | static inline void | |
363 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
364 | { | |
365 | spin_lock(&ip->i_flags_lock); | |
366 | __xfs_iflags_set(ip, flags); | |
367 | spin_unlock(&ip->i_flags_lock); | |
368 | } | |
369 | ||
370 | static inline void | |
371 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
372 | { | |
373 | spin_lock(&ip->i_flags_lock); | |
374 | ip->i_flags &= ~flags; | |
375 | spin_unlock(&ip->i_flags_lock); | |
376 | } | |
377 | ||
378 | static inline int | |
379 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
380 | { | |
381 | return (ip->i_flags & flags); | |
382 | } | |
383 | ||
384 | static inline int | |
385 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
386 | { | |
387 | int ret; | |
388 | spin_lock(&ip->i_flags_lock); | |
389 | ret = __xfs_iflags_test(ip, flags); | |
390 | spin_unlock(&ip->i_flags_lock); | |
391 | return ret; | |
392 | } | |
1da177e4 LT |
393 | #endif /* __KERNEL__ */ |
394 | ||
395 | ||
396 | /* | |
397 | * Fork handling. | |
398 | */ | |
a844f451 NS |
399 | #define XFS_IFORK_PTR(ip,w) \ |
400 | ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp) | |
1da177e4 | 401 | #define XFS_IFORK_Q(ip) XFS_CFORK_Q(&(ip)->i_d) |
1da177e4 | 402 | #define XFS_IFORK_DSIZE(ip) XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount) |
1da177e4 | 403 | #define XFS_IFORK_ASIZE(ip) XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount) |
1da177e4 | 404 | #define XFS_IFORK_SIZE(ip,w) XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w) |
1da177e4 | 405 | #define XFS_IFORK_FORMAT(ip,w) XFS_CFORK_FORMAT(&ip->i_d, w) |
1da177e4 | 406 | #define XFS_IFORK_FMT_SET(ip,w,n) XFS_CFORK_FMT_SET(&ip->i_d, w, n) |
1da177e4 | 407 | #define XFS_IFORK_NEXTENTS(ip,w) XFS_CFORK_NEXTENTS(&ip->i_d, w) |
1da177e4 | 408 | #define XFS_IFORK_NEXT_SET(ip,w,n) XFS_CFORK_NEXT_SET(&ip->i_d, w, n) |
1da177e4 LT |
409 | |
410 | ||
411 | #ifdef __KERNEL__ | |
412 | ||
413 | /* | |
414 | * In-core inode flags. | |
415 | */ | |
416 | #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ | |
417 | #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ | |
418 | #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ | |
419 | #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ | |
420 | #define XFS_ISTALE 0x0010 /* inode has been staled */ | |
421 | #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ | |
422 | #define XFS_INEW 0x0040 | |
2a82b8be | 423 | #define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */ |
1da177e4 LT |
424 | |
425 | /* | |
426 | * Flags for inode locking. | |
f7c66ce3 LM |
427 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
428 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 429 | */ |
f7c66ce3 LM |
430 | #define XFS_IOLOCK_EXCL (1<<0) |
431 | #define XFS_IOLOCK_SHARED (1<<1) | |
432 | #define XFS_ILOCK_EXCL (1<<2) | |
433 | #define XFS_ILOCK_SHARED (1<<3) | |
434 | #define XFS_IUNLOCK_NONOTIFY (1<<4) | |
435 | /* #define XFS_IOLOCK_NESTED (1<<5) */ | |
436 | #define XFS_EXTENT_TOKEN_RD (1<<6) | |
437 | #define XFS_SIZE_TOKEN_RD (1<<7) | |
1da177e4 | 438 | #define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) |
f7c66ce3 | 439 | #define XFS_WILLLEND (1<<8) /* Always acquire tokens for lending */ |
1da177e4 LT |
440 | #define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND) |
441 | #define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND) | |
442 | #define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND) | |
f7c66ce3 | 443 | /* TODO:XFS_SIZE_TOKEN_WANT (1<<9) */ |
1da177e4 | 444 | |
f7c66ce3 LM |
445 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
446 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ | |
447 | | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD \ | |
448 | | XFS_WILLLEND) | |
449 | ||
450 | /* | |
451 | * Flags for lockdep annotations. | |
452 | * | |
453 | * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes | |
454 | * (ie directory operations that require locking a directory inode and | |
455 | * an entry inode). The first inode gets locked with this flag so it | |
456 | * gets a lockdep subclass of 1 and the second lock will have a lockdep | |
457 | * subclass of 0. | |
458 | * | |
0f1145cc | 459 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
460 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
461 | * and each subsequent lock acquired will increment the subclass by one. | |
462 | * So the first lock acquired will have a lockdep subclass of 2, the | |
0f1145cc DC |
463 | * second lock will have a lockdep subclass of 3, and so on. It is |
464 | * the responsibility of the class builder to shift this to the correct | |
465 | * portion of the lock_mode lockdep mask. | |
f7c66ce3 | 466 | */ |
0f1145cc DC |
467 | #define XFS_LOCK_PARENT 1 |
468 | #define XFS_LOCK_INUMORDER 2 | |
469 | ||
f7c66ce3 | 470 | #define XFS_IOLOCK_SHIFT 16 |
0f1145cc | 471 | #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) |
f7c66ce3 LM |
472 | |
473 | #define XFS_ILOCK_SHIFT 24 | |
0f1145cc | 474 | #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) |
f7c66ce3 LM |
475 | |
476 | #define XFS_IOLOCK_DEP_MASK 0x00ff0000 | |
477 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
478 | #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) | |
479 | ||
480 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) | |
481 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) | |
1da177e4 LT |
482 | |
483 | /* | |
484 | * Flags for xfs_iflush() | |
485 | */ | |
486 | #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 | |
487 | #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 | |
488 | #define XFS_IFLUSH_SYNC 3 | |
489 | #define XFS_IFLUSH_ASYNC 4 | |
490 | #define XFS_IFLUSH_DELWRI 5 | |
491 | ||
1da177e4 LT |
492 | /* |
493 | * Flags for xfs_itruncate_start(). | |
494 | */ | |
495 | #define XFS_ITRUNC_DEFINITE 0x1 | |
496 | #define XFS_ITRUNC_MAYBE 0x2 | |
497 | ||
1da177e4 | 498 | #define XFS_ITOV(ip) BHV_TO_VNODE(XFS_ITOBHV(ip)) |
1da177e4 | 499 | #define XFS_ITOV_NULL(ip) BHV_TO_VNODE_NULL(XFS_ITOBHV(ip)) |
1da177e4 | 500 | #define XFS_ITOBHV(ip) ((struct bhv_desc *)(&((ip)->i_bhv_desc))) |
a844f451 NS |
501 | #define XFS_BHVTOI(bhvp) ((xfs_inode_t *)((char *)(bhvp) - \ |
502 | (char *)&(((xfs_inode_t *)0)->i_bhv_desc))) | |
1da177e4 LT |
503 | #define BHV_IS_XFS(bdp) (BHV_OPS(bdp) == &xfs_vnodeops) |
504 | ||
505 | /* | |
506 | * For multiple groups support: if S_ISGID bit is set in the parent | |
507 | * directory, group of new file is set to that of the parent, and | |
508 | * new subdirectory gets S_ISGID bit from parent. | |
509 | */ | |
510 | #define XFS_INHERIT_GID(pip, vfsp) \ | |
511 | (((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID)) | |
512 | ||
513 | /* | |
745b1f47 | 514 | * Flags for xfs_iget() |
1da177e4 | 515 | */ |
745b1f47 NS |
516 | #define XFS_IGET_CREATE 0x1 |
517 | #define XFS_IGET_BULKSTAT 0x2 | |
1da177e4 | 518 | |
745b1f47 NS |
519 | /* |
520 | * xfs_iget.c prototypes. | |
521 | */ | |
1da177e4 LT |
522 | void xfs_ihash_init(struct xfs_mount *); |
523 | void xfs_ihash_free(struct xfs_mount *); | |
524 | void xfs_chash_init(struct xfs_mount *); | |
525 | void xfs_chash_free(struct xfs_mount *); | |
526 | xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, | |
527 | struct xfs_trans *); | |
67fcaa73 | 528 | void xfs_inode_lock_init(xfs_inode_t *, struct bhv_vnode *); |
1da177e4 LT |
529 | int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
530 | uint, uint, xfs_inode_t **, xfs_daddr_t); | |
531 | void xfs_iput(xfs_inode_t *, uint); | |
532 | void xfs_iput_new(xfs_inode_t *, uint); | |
533 | void xfs_ilock(xfs_inode_t *, uint); | |
534 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
535 | void xfs_iunlock(xfs_inode_t *, uint); | |
536 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
537 | void xfs_iflock(xfs_inode_t *); | |
538 | int xfs_iflock_nowait(xfs_inode_t *); | |
539 | uint xfs_ilock_map_shared(xfs_inode_t *); | |
540 | void xfs_iunlock_map_shared(xfs_inode_t *, uint); | |
541 | void xfs_ifunlock(xfs_inode_t *); | |
542 | void xfs_ireclaim(xfs_inode_t *); | |
543 | int xfs_finish_reclaim(xfs_inode_t *, int, int); | |
544 | int xfs_finish_reclaim_all(struct xfs_mount *, int); | |
545 | ||
546 | /* | |
547 | * xfs_inode.c prototypes. | |
548 | */ | |
1da177e4 | 549 | int xfs_itobp(struct xfs_mount *, struct xfs_trans *, |
347d1c01 | 550 | xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **, |
b12dd342 | 551 | xfs_daddr_t, uint); |
1da177e4 | 552 | int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
745b1f47 | 553 | xfs_inode_t **, xfs_daddr_t, uint); |
1da177e4 | 554 | int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); |
31b084ae NS |
555 | int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, |
556 | xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, | |
557 | int, struct xfs_buf **, boolean_t *, xfs_inode_t **); | |
347d1c01 CH |
558 | void xfs_dinode_from_disk(struct xfs_icdinode *, |
559 | struct xfs_dinode_core *); | |
560 | void xfs_dinode_to_disk(struct xfs_dinode_core *, | |
561 | struct xfs_icdinode *); | |
562 | ||
1da177e4 LT |
563 | uint xfs_ip2xflags(struct xfs_inode *); |
564 | uint xfs_dic2xflags(struct xfs_dinode_core *); | |
565 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, | |
566 | struct xfs_bmap_free *); | |
d3cf2094 | 567 | int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); |
1da177e4 LT |
568 | int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, |
569 | xfs_fsize_t, int, int); | |
570 | int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); | |
571 | int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *); | |
572 | void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *, | |
573 | xfs_fsize_t, int); | |
574 | ||
575 | void xfs_idestroy_fork(xfs_inode_t *, int); | |
576 | void xfs_idestroy(xfs_inode_t *); | |
577 | void xfs_idata_realloc(xfs_inode_t *, int, int); | |
578 | void xfs_iextract(xfs_inode_t *); | |
579 | void xfs_iext_realloc(xfs_inode_t *, int, int); | |
580 | void xfs_iroot_realloc(xfs_inode_t *, int, int); | |
581 | void xfs_ipin(xfs_inode_t *); | |
582 | void xfs_iunpin(xfs_inode_t *); | |
583 | int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); | |
584 | int xfs_iflush(xfs_inode_t *, uint); | |
efa80278 | 585 | void xfs_iflush_all(struct xfs_mount *); |
1da177e4 LT |
586 | int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *); |
587 | uint xfs_iroundup(uint); | |
588 | void xfs_ichgtime(xfs_inode_t *, int); | |
589 | xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); | |
590 | void xfs_lock_inodes(xfs_inode_t **, int, int, uint); | |
591 | ||
67fcaa73 | 592 | xfs_inode_t *xfs_vtoi(struct bhv_vnode *vp); |
75e17b3c | 593 | |
42fe2b1f CH |
594 | void xfs_synchronize_atime(xfs_inode_t *); |
595 | ||
a6f64d4a | 596 | xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); |
4eea22f0 MK |
597 | void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, |
598 | xfs_bmbt_irec_t *); | |
599 | void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); | |
0293ce3a | 600 | void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); |
4eea22f0 MK |
601 | void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); |
602 | void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); | |
603 | void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); | |
0293ce3a | 604 | void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); |
4eea22f0 | 605 | void xfs_iext_realloc_direct(xfs_ifork_t *, int); |
0293ce3a MK |
606 | void xfs_iext_realloc_indirect(xfs_ifork_t *, int); |
607 | void xfs_iext_indirect_to_direct(xfs_ifork_t *); | |
4eea22f0 MK |
608 | void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); |
609 | void xfs_iext_inline_to_direct(xfs_ifork_t *, int); | |
610 | void xfs_iext_destroy(xfs_ifork_t *); | |
a6f64d4a | 611 | xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); |
0293ce3a MK |
612 | xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); |
613 | xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); | |
614 | void xfs_iext_irec_init(xfs_ifork_t *); | |
615 | xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); | |
616 | void xfs_iext_irec_remove(xfs_ifork_t *, int); | |
617 | void xfs_iext_irec_compact(xfs_ifork_t *); | |
618 | void xfs_iext_irec_compact_pages(xfs_ifork_t *); | |
619 | void xfs_iext_irec_compact_full(xfs_ifork_t *); | |
620 | void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); | |
4eea22f0 | 621 | |
1da177e4 LT |
622 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
623 | ||
624 | #ifdef DEBUG | |
625 | void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t); | |
626 | #else /* DEBUG */ | |
627 | #define xfs_isize_check(mp, ip, isize) | |
628 | #endif /* DEBUG */ | |
629 | ||
630 | #if defined(DEBUG) | |
631 | void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); | |
632 | #else | |
633 | #define xfs_inobp_check(mp, bp) | |
634 | #endif /* DEBUG */ | |
635 | ||
636 | extern struct kmem_zone *xfs_chashlist_zone; | |
637 | extern struct kmem_zone *xfs_ifork_zone; | |
638 | extern struct kmem_zone *xfs_inode_zone; | |
639 | extern struct kmem_zone *xfs_ili_zone; | |
1da177e4 LT |
640 | |
641 | #endif /* __KERNEL__ */ | |
642 | ||
643 | #endif /* __XFS_INODE_H__ */ |