Commit | Line | Data |
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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 | 21 | struct xfs_dinode; |
847fff5c | 22 | struct xfs_inode; |
347d1c01 | 23 | |
a844f451 NS |
24 | /* |
25 | * Fork identifiers. | |
26 | */ | |
27 | #define XFS_DATA_FORK 0 | |
28 | #define XFS_ATTR_FORK 1 | |
29 | ||
0293ce3a MK |
30 | /* |
31 | * The following xfs_ext_irec_t struct introduces a second (top) level | |
32 | * to the in-core extent allocation scheme. These structs are allocated | |
33 | * in a contiguous block, creating an indirection array where each entry | |
34 | * (irec) contains a pointer to a buffer of in-core extent records which | |
35 | * it manages. Each extent buffer is 4k in size, since 4k is the system | |
36 | * page size on Linux i386 and systems with larger page sizes don't seem | |
37 | * to gain much, if anything, by using their native page size as the | |
38 | * extent buffer size. Also, using 4k extent buffers everywhere provides | |
39 | * a consistent interface for CXFS across different platforms. | |
40 | * | |
41 | * There is currently no limit on the number of irec's (extent lists) | |
42 | * allowed, so heavily fragmented files may require an indirection array | |
43 | * which spans multiple system pages of memory. The number of extents | |
44 | * which would require this amount of contiguous memory is very large | |
45 | * and should not cause problems in the foreseeable future. However, | |
46 | * if the memory needed for the contiguous array ever becomes a problem, | |
47 | * it is possible that a third level of indirection may be required. | |
48 | */ | |
49 | typedef struct xfs_ext_irec { | |
a6f64d4a | 50 | xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ |
0293ce3a MK |
51 | xfs_extnum_t er_extoff; /* extent offset in file */ |
52 | xfs_extnum_t er_extcount; /* number of extents in page/block */ | |
53 | } xfs_ext_irec_t; | |
54 | ||
1da177e4 LT |
55 | /* |
56 | * File incore extent information, present for each of data & attr forks. | |
57 | */ | |
0293ce3a MK |
58 | #define XFS_IEXT_BUFSZ 4096 |
59 | #define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) | |
60 | #define XFS_INLINE_EXTS 2 | |
61 | #define XFS_INLINE_DATA 32 | |
1da177e4 LT |
62 | typedef struct xfs_ifork { |
63 | int if_bytes; /* bytes in if_u1 */ | |
64 | int if_real_bytes; /* bytes allocated in if_u1 */ | |
7cc95a82 | 65 | struct xfs_btree_block *if_broot; /* file's incore btree root */ |
1da177e4 LT |
66 | short if_broot_bytes; /* bytes allocated for root */ |
67 | unsigned char if_flags; /* per-fork flags */ | |
68 | unsigned char if_ext_max; /* max # of extent records */ | |
69 | xfs_extnum_t if_lastex; /* last if_extents used */ | |
70 | union { | |
a6f64d4a | 71 | xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ |
0293ce3a | 72 | xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ |
1da177e4 LT |
73 | char *if_data; /* inline file data */ |
74 | } if_u1; | |
75 | union { | |
a6f64d4a | 76 | xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; |
1da177e4 LT |
77 | /* very small file extents */ |
78 | char if_inline_data[XFS_INLINE_DATA]; | |
79 | /* very small file data */ | |
80 | xfs_dev_t if_rdev; /* dev number if special */ | |
81 | uuid_t if_uuid; /* mount point value */ | |
82 | } if_u2; | |
83 | } xfs_ifork_t; | |
84 | ||
92bfc6e7 CH |
85 | /* |
86 | * Inode location information. Stored in the inode and passed to | |
87 | * xfs_imap_to_bp() to get a buffer and dinode for a given inode. | |
88 | */ | |
89 | struct xfs_imap { | |
90 | xfs_daddr_t im_blkno; /* starting BB of inode chunk */ | |
91 | ushort im_len; /* length in BBs of inode chunk */ | |
92 | ushort im_boffset; /* inode offset in block in bytes */ | |
93 | }; | |
94 | ||
1da177e4 LT |
95 | /* |
96 | * This is the xfs in-core inode structure. | |
97 | * Most of the on-disk inode is embedded in the i_d field. | |
98 | * | |
99 | * The extent pointers/inline file space, however, are managed | |
100 | * separately. The memory for this information is pointed to by | |
101 | * the if_u1 unions depending on the type of the data. | |
102 | * This is used to linearize the array of extents for fast in-core | |
103 | * access. This is used until the file's number of extents | |
104 | * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers | |
105 | * are accessed through the buffer cache. | |
106 | * | |
107 | * Other state kept in the in-core inode is used for identification, | |
108 | * locking, transactional updating, etc of the inode. | |
109 | * | |
110 | * Generally, we do not want to hold the i_rlock while holding the | |
111 | * i_ilock. Hierarchy is i_iolock followed by i_rlock. | |
112 | * | |
113 | * xfs_iptr_t contains all the inode fields upto and including the | |
114 | * i_mnext and i_mprev fields, it is used as a marker in the inode | |
115 | * chain off the mount structure by xfs_sync calls. | |
116 | */ | |
117 | ||
347d1c01 CH |
118 | typedef struct xfs_ictimestamp { |
119 | __int32_t t_sec; /* timestamp seconds */ | |
120 | __int32_t t_nsec; /* timestamp nanoseconds */ | |
121 | } xfs_ictimestamp_t; | |
122 | ||
123 | /* | |
81591fe2 | 124 | * NOTE: This structure must be kept identical to struct xfs_dinode |
347d1c01 CH |
125 | * in xfs_dinode.h except for the endianess annotations. |
126 | */ | |
127 | typedef struct xfs_icdinode { | |
128 | __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ | |
129 | __uint16_t di_mode; /* mode and type of file */ | |
130 | __int8_t di_version; /* inode version */ | |
131 | __int8_t di_format; /* format of di_c data */ | |
132 | __uint16_t di_onlink; /* old number of links to file */ | |
133 | __uint32_t di_uid; /* owner's user id */ | |
134 | __uint32_t di_gid; /* owner's group id */ | |
135 | __uint32_t di_nlink; /* number of links to file */ | |
136 | __uint16_t di_projid; /* owner's project id */ | |
137 | __uint8_t di_pad[8]; /* unused, zeroed space */ | |
138 | __uint16_t di_flushiter; /* incremented on flush */ | |
139 | xfs_ictimestamp_t di_atime; /* time last accessed */ | |
140 | xfs_ictimestamp_t di_mtime; /* time last modified */ | |
141 | xfs_ictimestamp_t di_ctime; /* time created/inode modified */ | |
142 | xfs_fsize_t di_size; /* number of bytes in file */ | |
143 | xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ | |
144 | xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ | |
145 | xfs_extnum_t di_nextents; /* number of extents in data fork */ | |
146 | xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ | |
147 | __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ | |
148 | __int8_t di_aformat; /* format of attr fork's data */ | |
149 | __uint32_t di_dmevmask; /* DMIG event mask */ | |
150 | __uint16_t di_dmstate; /* DMIG state info */ | |
151 | __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ | |
152 | __uint32_t di_gen; /* generation number */ | |
153 | } xfs_icdinode_t; | |
154 | ||
847fff5c BN |
155 | /* |
156 | * Flags for xfs_ichgtime(). | |
157 | */ | |
158 | #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ | |
159 | #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ | |
160 | ||
161 | /* | |
162 | * Per-fork incore inode flags. | |
163 | */ | |
164 | #define XFS_IFINLINE 0x01 /* Inline data is read in */ | |
165 | #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ | |
166 | #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ | |
167 | #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ | |
168 | ||
847fff5c BN |
169 | /* |
170 | * Fork handling. | |
171 | */ | |
172 | ||
173 | #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) | |
174 | #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) | |
175 | ||
176 | #define XFS_IFORK_PTR(ip,w) \ | |
177 | ((w) == XFS_DATA_FORK ? \ | |
178 | &(ip)->i_df : \ | |
179 | (ip)->i_afp) | |
180 | #define XFS_IFORK_DSIZE(ip) \ | |
181 | (XFS_IFORK_Q(ip) ? \ | |
182 | XFS_IFORK_BOFF(ip) : \ | |
183 | XFS_LITINO((ip)->i_mount)) | |
184 | #define XFS_IFORK_ASIZE(ip) \ | |
185 | (XFS_IFORK_Q(ip) ? \ | |
186 | XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ | |
187 | 0) | |
188 | #define XFS_IFORK_SIZE(ip,w) \ | |
189 | ((w) == XFS_DATA_FORK ? \ | |
190 | XFS_IFORK_DSIZE(ip) : \ | |
191 | XFS_IFORK_ASIZE(ip)) | |
192 | #define XFS_IFORK_FORMAT(ip,w) \ | |
193 | ((w) == XFS_DATA_FORK ? \ | |
194 | (ip)->i_d.di_format : \ | |
195 | (ip)->i_d.di_aformat) | |
196 | #define XFS_IFORK_FMT_SET(ip,w,n) \ | |
197 | ((w) == XFS_DATA_FORK ? \ | |
198 | ((ip)->i_d.di_format = (n)) : \ | |
199 | ((ip)->i_d.di_aformat = (n))) | |
200 | #define XFS_IFORK_NEXTENTS(ip,w) \ | |
201 | ((w) == XFS_DATA_FORK ? \ | |
202 | (ip)->i_d.di_nextents : \ | |
203 | (ip)->i_d.di_anextents) | |
204 | #define XFS_IFORK_NEXT_SET(ip,w,n) \ | |
205 | ((w) == XFS_DATA_FORK ? \ | |
206 | ((ip)->i_d.di_nextents = (n)) : \ | |
207 | ((ip)->i_d.di_anextents = (n))) | |
208 | ||
209 | ||
210 | ||
211 | #ifdef __KERNEL__ | |
212 | ||
213 | struct bhv_desc; | |
214 | struct cred; | |
215 | struct ktrace; | |
216 | struct xfs_buf; | |
217 | struct xfs_bmap_free; | |
218 | struct xfs_bmbt_irec; | |
847fff5c BN |
219 | struct xfs_inode_log_item; |
220 | struct xfs_mount; | |
221 | struct xfs_trans; | |
222 | struct xfs_dquot; | |
223 | ||
224 | #if defined(XFS_ILOCK_TRACE) | |
225 | #define XFS_ILOCK_KTRACE_SIZE 32 | |
847fff5c BN |
226 | extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); |
227 | #else | |
228 | #define xfs_ilock_trace(i,n,f,ra) | |
229 | #endif | |
230 | ||
231 | typedef struct dm_attrs_s { | |
232 | __uint32_t da_dmevmask; /* DMIG event mask */ | |
233 | __uint16_t da_dmstate; /* DMIG state info */ | |
234 | __uint16_t da_pad; /* DMIG extra padding */ | |
235 | } dm_attrs_t; | |
236 | ||
1da177e4 LT |
237 | typedef struct xfs_inode { |
238 | /* Inode linking and identification information. */ | |
1da177e4 | 239 | struct xfs_mount *i_mount; /* fs mount struct ptr */ |
1da177e4 LT |
240 | struct xfs_dquot *i_udquot; /* user dquot */ |
241 | struct xfs_dquot *i_gdquot; /* group dquot */ | |
242 | ||
243 | /* Inode location stuff */ | |
244 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ | |
92bfc6e7 | 245 | struct xfs_imap i_imap; /* location for xfs_imap() */ |
1da177e4 LT |
246 | |
247 | /* Extent information. */ | |
248 | xfs_ifork_t *i_afp; /* attribute fork pointer */ | |
249 | xfs_ifork_t i_df; /* data fork */ | |
250 | ||
251 | /* Transaction and locking information. */ | |
252 | struct xfs_trans *i_transp; /* ptr to owning transaction*/ | |
253 | struct xfs_inode_log_item *i_itemp; /* logging information */ | |
254 | mrlock_t i_lock; /* inode lock */ | |
255 | mrlock_t i_iolock; /* inode IO lock */ | |
c63942d3 | 256 | struct completion i_flush; /* inode flush completion q */ |
1da177e4 LT |
257 | atomic_t i_pincount; /* inode pin count */ |
258 | wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ | |
f273ab84 | 259 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 LT |
260 | /* Miscellaneous state. */ |
261 | unsigned short i_flags; /* see defined flags below */ | |
262 | unsigned char i_update_core; /* timestamps/size is dirty */ | |
263 | unsigned char i_update_size; /* di_size field is dirty */ | |
1da177e4 LT |
264 | unsigned int i_delayed_blks; /* count of delay alloc blks */ |
265 | ||
347d1c01 | 266 | xfs_icdinode_t i_d; /* most of ondisk inode */ |
1da177e4 | 267 | |
ba87ea69 | 268 | xfs_fsize_t i_size; /* in-memory size */ |
613d7043 | 269 | xfs_fsize_t i_new_size; /* size when write completes */ |
b677c210 | 270 | atomic_t i_iocount; /* outstanding I/O count */ |
bf904248 DC |
271 | |
272 | /* VFS inode */ | |
273 | struct inode i_vnode; /* embedded VFS inode */ | |
274 | ||
1da177e4 | 275 | /* Trace buffers per inode. */ |
cf441eeb | 276 | #ifdef XFS_INODE_TRACE |
1543d79c CH |
277 | struct ktrace *i_trace; /* general inode trace */ |
278 | #endif | |
1da177e4 LT |
279 | #ifdef XFS_BMAP_TRACE |
280 | struct ktrace *i_xtrace; /* inode extent list trace */ | |
281 | #endif | |
8c4ed633 | 282 | #ifdef XFS_BTREE_TRACE |
1da177e4 LT |
283 | struct ktrace *i_btrace; /* inode bmap btree trace */ |
284 | #endif | |
285 | #ifdef XFS_RW_TRACE | |
286 | struct ktrace *i_rwtrace; /* inode read/write trace */ | |
287 | #endif | |
288 | #ifdef XFS_ILOCK_TRACE | |
289 | struct ktrace *i_lock_trace; /* inode lock/unlock trace */ | |
290 | #endif | |
291 | #ifdef XFS_DIR2_TRACE | |
292 | struct ktrace *i_dir_trace; /* inode directory trace */ | |
293 | #endif | |
294 | } xfs_inode_t; | |
295 | ||
ba87ea69 LM |
296 | #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ |
297 | (ip)->i_size : (ip)->i_d.di_size; | |
7a18c386 | 298 | |
01651646 DC |
299 | /* Convert from vfs inode to xfs inode */ |
300 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
301 | { | |
bf904248 | 302 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
303 | } |
304 | ||
01651646 DC |
305 | /* convert from xfs inode to vfs inode */ |
306 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
307 | { | |
bf904248 | 308 | return &ip->i_vnode; |
01651646 | 309 | } |
01651646 | 310 | |
9ed0451e CH |
311 | /* |
312 | * Get rid of a partially initialized inode. | |
313 | * | |
314 | * We have to go through destroy_inode to make sure allocations | |
315 | * from init_inode_always like the security data are undone. | |
316 | * | |
317 | * We mark the inode bad so that it takes the short cut in | |
318 | * the reclaim path instead of going through the flush path | |
319 | * which doesn't make sense for an inode that has never seen the | |
320 | * light of day. | |
321 | */ | |
322 | static inline void xfs_destroy_inode(struct xfs_inode *ip) | |
323 | { | |
324 | make_bad_inode(VFS_I(ip)); | |
325 | return destroy_inode(VFS_I(ip)); | |
326 | } | |
327 | ||
7a18c386 DC |
328 | /* |
329 | * i_flags helper functions | |
330 | */ | |
331 | static inline void | |
332 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
333 | { | |
334 | ip->i_flags |= flags; | |
335 | } | |
336 | ||
337 | static inline void | |
338 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
339 | { | |
340 | spin_lock(&ip->i_flags_lock); | |
341 | __xfs_iflags_set(ip, flags); | |
342 | spin_unlock(&ip->i_flags_lock); | |
343 | } | |
344 | ||
345 | static inline void | |
346 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
347 | { | |
348 | spin_lock(&ip->i_flags_lock); | |
349 | ip->i_flags &= ~flags; | |
350 | spin_unlock(&ip->i_flags_lock); | |
351 | } | |
352 | ||
353 | static inline int | |
354 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
355 | { | |
356 | return (ip->i_flags & flags); | |
357 | } | |
358 | ||
359 | static inline int | |
360 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
361 | { | |
362 | int ret; | |
363 | spin_lock(&ip->i_flags_lock); | |
364 | ret = __xfs_iflags_test(ip, flags); | |
365 | spin_unlock(&ip->i_flags_lock); | |
366 | return ret; | |
367 | } | |
09262b43 CH |
368 | |
369 | static inline int | |
370 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) | |
371 | { | |
372 | int ret; | |
373 | ||
374 | spin_lock(&ip->i_flags_lock); | |
375 | ret = ip->i_flags & flags; | |
376 | if (ret) | |
377 | ip->i_flags &= ~flags; | |
378 | spin_unlock(&ip->i_flags_lock); | |
379 | return ret; | |
380 | } | |
1da177e4 LT |
381 | |
382 | /* | |
847fff5c BN |
383 | * Manage the i_flush queue embedded in the inode. This completion |
384 | * queue synchronizes processes attempting to flush the in-core | |
385 | * inode back to disk. | |
1da177e4 | 386 | */ |
847fff5c BN |
387 | static inline void xfs_iflock(xfs_inode_t *ip) |
388 | { | |
389 | wait_for_completion(&ip->i_flush); | |
390 | } | |
1da177e4 | 391 | |
847fff5c BN |
392 | static inline int xfs_iflock_nowait(xfs_inode_t *ip) |
393 | { | |
394 | return try_wait_for_completion(&ip->i_flush); | |
395 | } | |
1da177e4 | 396 | |
847fff5c BN |
397 | static inline void xfs_ifunlock(xfs_inode_t *ip) |
398 | { | |
399 | complete(&ip->i_flush); | |
400 | } | |
1da177e4 LT |
401 | |
402 | /* | |
403 | * In-core inode flags. | |
404 | */ | |
6bd16ff2 CH |
405 | #define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */ |
406 | #define XFS_ISTALE 0x0002 /* inode has been staled */ | |
407 | #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */ | |
408 | #define XFS_INEW 0x0008 /* inode has just been allocated */ | |
409 | #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */ | |
410 | #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */ | |
1da177e4 LT |
411 | |
412 | /* | |
413 | * Flags for inode locking. | |
f7c66ce3 LM |
414 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
415 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 416 | */ |
f7c66ce3 LM |
417 | #define XFS_IOLOCK_EXCL (1<<0) |
418 | #define XFS_IOLOCK_SHARED (1<<1) | |
419 | #define XFS_ILOCK_EXCL (1<<2) | |
420 | #define XFS_ILOCK_SHARED (1<<3) | |
421 | #define XFS_IUNLOCK_NONOTIFY (1<<4) | |
1da177e4 | 422 | |
f7c66ce3 | 423 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
579aa9ca | 424 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) |
f7c66ce3 LM |
425 | |
426 | /* | |
427 | * Flags for lockdep annotations. | |
428 | * | |
429 | * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes | |
430 | * (ie directory operations that require locking a directory inode and | |
431 | * an entry inode). The first inode gets locked with this flag so it | |
432 | * gets a lockdep subclass of 1 and the second lock will have a lockdep | |
433 | * subclass of 0. | |
434 | * | |
0f1145cc | 435 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
436 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
437 | * and each subsequent lock acquired will increment the subclass by one. | |
438 | * So the first lock acquired will have a lockdep subclass of 2, the | |
0f1145cc DC |
439 | * second lock will have a lockdep subclass of 3, and so on. It is |
440 | * the responsibility of the class builder to shift this to the correct | |
441 | * portion of the lock_mode lockdep mask. | |
f7c66ce3 | 442 | */ |
0f1145cc DC |
443 | #define XFS_LOCK_PARENT 1 |
444 | #define XFS_LOCK_INUMORDER 2 | |
445 | ||
f7c66ce3 | 446 | #define XFS_IOLOCK_SHIFT 16 |
0f1145cc | 447 | #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) |
f7c66ce3 LM |
448 | |
449 | #define XFS_ILOCK_SHIFT 24 | |
0f1145cc | 450 | #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) |
f7c66ce3 LM |
451 | |
452 | #define XFS_IOLOCK_DEP_MASK 0x00ff0000 | |
453 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
454 | #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) | |
455 | ||
456 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) | |
457 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) | |
1da177e4 LT |
458 | |
459 | /* | |
460 | * Flags for xfs_iflush() | |
461 | */ | |
462 | #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 | |
463 | #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 | |
464 | #define XFS_IFLUSH_SYNC 3 | |
465 | #define XFS_IFLUSH_ASYNC 4 | |
466 | #define XFS_IFLUSH_DELWRI 5 | |
a3f74ffb | 467 | #define XFS_IFLUSH_ASYNC_NOBLOCK 6 |
1da177e4 | 468 | |
1da177e4 LT |
469 | /* |
470 | * Flags for xfs_itruncate_start(). | |
471 | */ | |
472 | #define XFS_ITRUNC_DEFINITE 0x1 | |
473 | #define XFS_ITRUNC_MAYBE 0x2 | |
474 | ||
1da177e4 LT |
475 | /* |
476 | * For multiple groups support: if S_ISGID bit is set in the parent | |
477 | * directory, group of new file is set to that of the parent, and | |
478 | * new subdirectory gets S_ISGID bit from parent. | |
479 | */ | |
bd186aa9 CH |
480 | #define XFS_INHERIT_GID(pip) \ |
481 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
482 | ((pip)->i_d.di_mode & S_ISGID)) | |
1da177e4 | 483 | |
745b1f47 NS |
484 | /* |
485 | * xfs_iget.c prototypes. | |
486 | */ | |
1da177e4 LT |
487 | xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, |
488 | struct xfs_trans *); | |
1da177e4 LT |
489 | int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
490 | uint, uint, xfs_inode_t **, xfs_daddr_t); | |
491 | void xfs_iput(xfs_inode_t *, uint); | |
492 | void xfs_iput_new(xfs_inode_t *, uint); | |
493 | void xfs_ilock(xfs_inode_t *, uint); | |
494 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
495 | void xfs_iunlock(xfs_inode_t *, uint); | |
496 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
579aa9ca | 497 | int xfs_isilocked(xfs_inode_t *, uint); |
1da177e4 LT |
498 | uint xfs_ilock_map_shared(xfs_inode_t *); |
499 | void xfs_iunlock_map_shared(xfs_inode_t *, uint); | |
1da177e4 | 500 | void xfs_ireclaim(xfs_inode_t *); |
1da177e4 LT |
501 | |
502 | /* | |
503 | * xfs_inode.c prototypes. | |
504 | */ | |
31b084ae | 505 | int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, |
b6dff3ec | 506 | xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t, |
31b084ae | 507 | int, struct xfs_buf **, boolean_t *, xfs_inode_t **); |
347d1c01 | 508 | |
1da177e4 | 509 | uint xfs_ip2xflags(struct xfs_inode *); |
45ba598e | 510 | uint xfs_dic2xflags(struct xfs_dinode *); |
1da177e4 LT |
511 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
512 | struct xfs_bmap_free *); | |
d3cf2094 | 513 | int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); |
1da177e4 LT |
514 | int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, |
515 | xfs_fsize_t, int, int); | |
516 | int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); | |
1da177e4 | 517 | |
1da177e4 | 518 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1da177e4 LT |
519 | void xfs_ipin(xfs_inode_t *); |
520 | void xfs_iunpin(xfs_inode_t *); | |
1da177e4 | 521 | int xfs_iflush(xfs_inode_t *, uint); |
1da177e4 LT |
522 | void xfs_ichgtime(xfs_inode_t *, int); |
523 | xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); | |
cfa853e4 | 524 | void xfs_lock_inodes(xfs_inode_t **, int, uint); |
e1cccd91 | 525 | void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); |
1da177e4 | 526 | |
42fe2b1f | 527 | void xfs_synchronize_atime(xfs_inode_t *); |
5d51eff4 | 528 | void xfs_mark_inode_dirty_sync(xfs_inode_t *); |
42fe2b1f | 529 | |
5a8d0f3c CH |
530 | #if defined(XFS_INODE_TRACE) |
531 | ||
532 | #define INODE_TRACE_SIZE 16 /* number of trace entries */ | |
533 | #define INODE_KTRACE_ENTRY 1 | |
534 | #define INODE_KTRACE_EXIT 2 | |
535 | #define INODE_KTRACE_HOLD 3 | |
536 | #define INODE_KTRACE_REF 4 | |
537 | #define INODE_KTRACE_RELE 5 | |
538 | ||
539 | extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *); | |
540 | extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *); | |
541 | extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *); | |
542 | extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *); | |
543 | extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *); | |
544 | #define xfs_itrace_entry(ip) \ | |
545 | _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address) | |
546 | #define xfs_itrace_exit(ip) \ | |
547 | _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address) | |
548 | #define xfs_itrace_exit_tag(ip, tag) \ | |
549 | _xfs_itrace_exit(ip, tag, (inst_t *)__return_address) | |
550 | #define xfs_itrace_ref(ip) \ | |
551 | _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address) | |
552 | ||
553 | #else | |
554 | #define xfs_itrace_entry(a) | |
555 | #define xfs_itrace_exit(a) | |
556 | #define xfs_itrace_exit_tag(a, b) | |
557 | #define xfs_itrace_hold(a, b, c, d) | |
558 | #define xfs_itrace_ref(a) | |
559 | #define xfs_itrace_rele(a, b, c, d) | |
560 | #endif | |
561 | ||
562 | #define IHOLD(ip) \ | |
563 | do { \ | |
564 | ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ | |
565 | atomic_inc(&(VFS_I(ip)->i_count)); \ | |
566 | xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ | |
567 | } while (0) | |
568 | ||
569 | #define IRELE(ip) \ | |
570 | do { \ | |
571 | xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ | |
572 | iput(VFS_I(ip)); \ | |
573 | } while (0) | |
574 | ||
847fff5c BN |
575 | #endif /* __KERNEL__ */ |
576 | ||
6d73cf13 CH |
577 | /* |
578 | * Flags for xfs_iget() | |
579 | */ | |
580 | #define XFS_IGET_CREATE 0x1 | |
581 | #define XFS_IGET_BULKSTAT 0x2 | |
582 | ||
c679eef0 CH |
583 | int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, |
584 | xfs_ino_t, struct xfs_dinode **, | |
585 | struct xfs_buf **, int *, uint); | |
847fff5c BN |
586 | int xfs_itobp(struct xfs_mount *, struct xfs_trans *, |
587 | struct xfs_inode *, struct xfs_dinode **, | |
76d8b277 | 588 | struct xfs_buf **, uint); |
6d73cf13 CH |
589 | int xfs_iread(struct xfs_mount *, struct xfs_trans *, |
590 | struct xfs_inode *, xfs_daddr_t, uint); | |
847fff5c | 591 | void xfs_dinode_from_disk(struct xfs_icdinode *, |
81591fe2 CH |
592 | struct xfs_dinode *); |
593 | void xfs_dinode_to_disk(struct xfs_dinode *, | |
847fff5c BN |
594 | struct xfs_icdinode *); |
595 | void xfs_idestroy_fork(struct xfs_inode *, int); | |
596 | void xfs_idata_realloc(struct xfs_inode *, int, int); | |
597 | void xfs_iroot_realloc(struct xfs_inode *, int, int); | |
598 | int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); | |
599 | int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); | |
600 | ||
a6f64d4a | 601 | xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); |
4eea22f0 MK |
602 | void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, |
603 | xfs_bmbt_irec_t *); | |
604 | void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); | |
0293ce3a | 605 | void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); |
4eea22f0 MK |
606 | void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); |
607 | void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); | |
608 | void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); | |
0293ce3a | 609 | void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); |
4eea22f0 | 610 | void xfs_iext_realloc_direct(xfs_ifork_t *, int); |
0293ce3a MK |
611 | void xfs_iext_realloc_indirect(xfs_ifork_t *, int); |
612 | void xfs_iext_indirect_to_direct(xfs_ifork_t *); | |
4eea22f0 MK |
613 | void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); |
614 | void xfs_iext_inline_to_direct(xfs_ifork_t *, int); | |
615 | void xfs_iext_destroy(xfs_ifork_t *); | |
a6f64d4a | 616 | xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); |
0293ce3a MK |
617 | xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); |
618 | xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); | |
619 | void xfs_iext_irec_init(xfs_ifork_t *); | |
620 | xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); | |
621 | void xfs_iext_irec_remove(xfs_ifork_t *, int); | |
622 | void xfs_iext_irec_compact(xfs_ifork_t *); | |
623 | void xfs_iext_irec_compact_pages(xfs_ifork_t *); | |
624 | void xfs_iext_irec_compact_full(xfs_ifork_t *); | |
625 | void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); | |
4eea22f0 | 626 | |
1da177e4 LT |
627 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
628 | ||
629 | #ifdef DEBUG | |
847fff5c BN |
630 | void xfs_isize_check(struct xfs_mount *, struct xfs_inode *, |
631 | xfs_fsize_t); | |
1da177e4 LT |
632 | #else /* DEBUG */ |
633 | #define xfs_isize_check(mp, ip, isize) | |
634 | #endif /* DEBUG */ | |
635 | ||
636 | #if defined(DEBUG) | |
637 | void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); | |
638 | #else | |
639 | #define xfs_inobp_check(mp, bp) | |
640 | #endif /* DEBUG */ | |
641 | ||
1da177e4 LT |
642 | extern struct kmem_zone *xfs_ifork_zone; |
643 | extern struct kmem_zone *xfs_inode_zone; | |
644 | extern struct kmem_zone *xfs_ili_zone; | |
1da177e4 | 645 | |
1da177e4 | 646 | #endif /* __XFS_INODE_H__ */ |