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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; | |
109 | struct cred; | |
110 | struct ktrace; | |
1da177e4 LT |
111 | struct xfs_buf; |
112 | struct xfs_bmap_free; | |
113 | struct xfs_bmbt_irec; | |
114 | struct xfs_bmbt_block; | |
115 | struct xfs_inode; | |
116 | struct xfs_inode_log_item; | |
117 | struct xfs_mount; | |
118 | struct xfs_trans; | |
119 | struct xfs_dquot; | |
120 | ||
121 | #if defined(XFS_ILOCK_TRACE) | |
122 | #define XFS_ILOCK_KTRACE_SIZE 32 | |
123 | extern ktrace_t *xfs_ilock_trace_buf; | |
124 | extern 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 | ||
1da177e4 LT |
129 | typedef 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 | ||
1da177e4 | 135 | /* |
da353b0d DC |
136 | * This is the xfs inode cluster structure. This structure is used by |
137 | * xfs_iflush to find inodes that share a cluster and can be flushed to disk at | |
138 | * the same time. | |
1da177e4 | 139 | */ |
da353b0d DC |
140 | typedef struct xfs_icluster { |
141 | struct hlist_head icl_inodes; /* list of inodes on cluster */ | |
142 | xfs_daddr_t icl_blkno; /* starting block number of | |
1da177e4 | 143 | * the cluster */ |
da353b0d | 144 | struct xfs_buf *icl_buf; /* the inode buffer */ |
36e41eeb | 145 | spinlock_t icl_lock; /* inode list lock */ |
da353b0d | 146 | } xfs_icluster_t; |
1da177e4 LT |
147 | |
148 | /* | |
149 | * This is the xfs in-core inode structure. | |
150 | * Most of the on-disk inode is embedded in the i_d field. | |
151 | * | |
152 | * The extent pointers/inline file space, however, are managed | |
153 | * separately. The memory for this information is pointed to by | |
154 | * the if_u1 unions depending on the type of the data. | |
155 | * This is used to linearize the array of extents for fast in-core | |
156 | * access. This is used until the file's number of extents | |
157 | * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers | |
158 | * are accessed through the buffer cache. | |
159 | * | |
160 | * Other state kept in the in-core inode is used for identification, | |
161 | * locking, transactional updating, etc of the inode. | |
162 | * | |
163 | * Generally, we do not want to hold the i_rlock while holding the | |
164 | * i_ilock. Hierarchy is i_iolock followed by i_rlock. | |
165 | * | |
166 | * xfs_iptr_t contains all the inode fields upto and including the | |
167 | * i_mnext and i_mprev fields, it is used as a marker in the inode | |
168 | * chain off the mount structure by xfs_sync calls. | |
169 | */ | |
170 | ||
347d1c01 CH |
171 | typedef struct xfs_ictimestamp { |
172 | __int32_t t_sec; /* timestamp seconds */ | |
173 | __int32_t t_nsec; /* timestamp nanoseconds */ | |
174 | } xfs_ictimestamp_t; | |
175 | ||
176 | /* | |
177 | * NOTE: This structure must be kept identical to struct xfs_dinode_core | |
178 | * in xfs_dinode.h except for the endianess annotations. | |
179 | */ | |
180 | typedef struct xfs_icdinode { | |
181 | __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ | |
182 | __uint16_t di_mode; /* mode and type of file */ | |
183 | __int8_t di_version; /* inode version */ | |
184 | __int8_t di_format; /* format of di_c data */ | |
185 | __uint16_t di_onlink; /* old number of links to file */ | |
186 | __uint32_t di_uid; /* owner's user id */ | |
187 | __uint32_t di_gid; /* owner's group id */ | |
188 | __uint32_t di_nlink; /* number of links to file */ | |
189 | __uint16_t di_projid; /* owner's project id */ | |
190 | __uint8_t di_pad[8]; /* unused, zeroed space */ | |
191 | __uint16_t di_flushiter; /* incremented on flush */ | |
192 | xfs_ictimestamp_t di_atime; /* time last accessed */ | |
193 | xfs_ictimestamp_t di_mtime; /* time last modified */ | |
194 | xfs_ictimestamp_t di_ctime; /* time created/inode modified */ | |
195 | xfs_fsize_t di_size; /* number of bytes in file */ | |
196 | xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ | |
197 | xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ | |
198 | xfs_extnum_t di_nextents; /* number of extents in data fork */ | |
199 | xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ | |
200 | __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ | |
201 | __int8_t di_aformat; /* format of attr fork's data */ | |
202 | __uint32_t di_dmevmask; /* DMIG event mask */ | |
203 | __uint16_t di_dmstate; /* DMIG state info */ | |
204 | __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ | |
205 | __uint32_t di_gen; /* generation number */ | |
206 | } xfs_icdinode_t; | |
207 | ||
1da177e4 | 208 | typedef struct { |
1da177e4 LT |
209 | struct xfs_inode *ip_mnext; /* next inode in mount list */ |
210 | struct xfs_inode *ip_mprev; /* ptr to prev inode */ | |
1da177e4 LT |
211 | struct xfs_mount *ip_mount; /* fs mount struct ptr */ |
212 | } xfs_iptr_t; | |
213 | ||
214 | typedef struct xfs_inode { | |
215 | /* Inode linking and identification information. */ | |
1da177e4 LT |
216 | struct xfs_inode *i_mnext; /* next inode in mount list */ |
217 | struct xfs_inode *i_mprev; /* ptr to prev inode */ | |
1da177e4 LT |
218 | struct xfs_mount *i_mount; /* fs mount struct ptr */ |
219 | struct list_head i_reclaim; /* reclaim list */ | |
0a74cd19 | 220 | bhv_vnode_t *i_vnode; /* vnode backpointer */ |
1da177e4 LT |
221 | struct xfs_dquot *i_udquot; /* user dquot */ |
222 | struct xfs_dquot *i_gdquot; /* group dquot */ | |
223 | ||
224 | /* Inode location stuff */ | |
225 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ | |
226 | xfs_daddr_t i_blkno; /* blkno of inode buffer */ | |
227 | ushort i_len; /* len of inode buffer */ | |
228 | ushort i_boffset; /* off of inode in buffer */ | |
229 | ||
230 | /* Extent information. */ | |
231 | xfs_ifork_t *i_afp; /* attribute fork pointer */ | |
232 | xfs_ifork_t i_df; /* data fork */ | |
233 | ||
234 | /* Transaction and locking information. */ | |
235 | struct xfs_trans *i_transp; /* ptr to owning transaction*/ | |
236 | struct xfs_inode_log_item *i_itemp; /* logging information */ | |
237 | mrlock_t i_lock; /* inode lock */ | |
238 | mrlock_t i_iolock; /* inode IO lock */ | |
239 | sema_t i_flock; /* inode flush lock */ | |
240 | atomic_t i_pincount; /* inode pin count */ | |
241 | wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ | |
f273ab84 | 242 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 LT |
243 | #ifdef HAVE_REFCACHE |
244 | struct xfs_inode **i_refcache; /* ptr to entry in ref cache */ | |
245 | struct xfs_inode *i_release; /* inode to unref */ | |
246 | #endif | |
1da177e4 LT |
247 | /* Miscellaneous state. */ |
248 | unsigned short i_flags; /* see defined flags below */ | |
249 | unsigned char i_update_core; /* timestamps/size is dirty */ | |
250 | unsigned char i_update_size; /* di_size field is dirty */ | |
251 | unsigned int i_gen; /* generation count */ | |
252 | unsigned int i_delayed_blks; /* count of delay alloc blks */ | |
253 | ||
347d1c01 | 254 | xfs_icdinode_t i_d; /* most of ondisk inode */ |
da353b0d DC |
255 | xfs_icluster_t *i_cluster; /* cluster list header */ |
256 | struct hlist_node i_cnode; /* cluster link node */ | |
1da177e4 | 257 | |
ba87ea69 | 258 | xfs_fsize_t i_size; /* in-memory size */ |
613d7043 | 259 | xfs_fsize_t i_new_size; /* size when write completes */ |
b677c210 | 260 | atomic_t i_iocount; /* outstanding I/O count */ |
1da177e4 | 261 | /* Trace buffers per inode. */ |
cf441eeb | 262 | #ifdef XFS_INODE_TRACE |
1543d79c CH |
263 | struct ktrace *i_trace; /* general inode trace */ |
264 | #endif | |
1da177e4 LT |
265 | #ifdef XFS_BMAP_TRACE |
266 | struct ktrace *i_xtrace; /* inode extent list trace */ | |
267 | #endif | |
268 | #ifdef XFS_BMBT_TRACE | |
269 | struct ktrace *i_btrace; /* inode bmap btree trace */ | |
270 | #endif | |
271 | #ifdef XFS_RW_TRACE | |
272 | struct ktrace *i_rwtrace; /* inode read/write trace */ | |
273 | #endif | |
274 | #ifdef XFS_ILOCK_TRACE | |
275 | struct ktrace *i_lock_trace; /* inode lock/unlock trace */ | |
276 | #endif | |
277 | #ifdef XFS_DIR2_TRACE | |
278 | struct ktrace *i_dir_trace; /* inode directory trace */ | |
279 | #endif | |
280 | } xfs_inode_t; | |
281 | ||
ba87ea69 LM |
282 | #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ |
283 | (ip)->i_size : (ip)->i_d.di_size; | |
7a18c386 DC |
284 | |
285 | /* | |
286 | * i_flags helper functions | |
287 | */ | |
288 | static inline void | |
289 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
290 | { | |
291 | ip->i_flags |= flags; | |
292 | } | |
293 | ||
294 | static inline void | |
295 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
296 | { | |
297 | spin_lock(&ip->i_flags_lock); | |
298 | __xfs_iflags_set(ip, flags); | |
299 | spin_unlock(&ip->i_flags_lock); | |
300 | } | |
301 | ||
302 | static inline void | |
303 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
304 | { | |
305 | spin_lock(&ip->i_flags_lock); | |
306 | ip->i_flags &= ~flags; | |
307 | spin_unlock(&ip->i_flags_lock); | |
308 | } | |
309 | ||
310 | static inline int | |
311 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
312 | { | |
313 | return (ip->i_flags & flags); | |
314 | } | |
315 | ||
316 | static inline int | |
317 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
318 | { | |
319 | int ret; | |
320 | spin_lock(&ip->i_flags_lock); | |
321 | ret = __xfs_iflags_test(ip, flags); | |
322 | spin_unlock(&ip->i_flags_lock); | |
323 | return ret; | |
324 | } | |
09262b43 CH |
325 | |
326 | static inline int | |
327 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) | |
328 | { | |
329 | int ret; | |
330 | ||
331 | spin_lock(&ip->i_flags_lock); | |
332 | ret = ip->i_flags & flags; | |
333 | if (ret) | |
334 | ip->i_flags &= ~flags; | |
335 | spin_unlock(&ip->i_flags_lock); | |
336 | return ret; | |
337 | } | |
1da177e4 LT |
338 | #endif /* __KERNEL__ */ |
339 | ||
340 | ||
341 | /* | |
342 | * Fork handling. | |
343 | */ | |
1da177e4 | 344 | |
45ba598e CH |
345 | #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) |
346 | #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) | |
347 | ||
348 | #define XFS_IFORK_PTR(ip,w) \ | |
349 | ((w) == XFS_DATA_FORK ? \ | |
350 | &(ip)->i_df : \ | |
351 | (ip)->i_afp) | |
352 | #define XFS_IFORK_DSIZE(ip) \ | |
353 | (XFS_IFORK_Q(ip) ? \ | |
354 | XFS_IFORK_BOFF(ip) : \ | |
355 | XFS_LITINO((ip)->i_mount)) | |
356 | #define XFS_IFORK_ASIZE(ip) \ | |
357 | (XFS_IFORK_Q(ip) ? \ | |
358 | XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ | |
359 | 0) | |
360 | #define XFS_IFORK_SIZE(ip,w) \ | |
361 | ((w) == XFS_DATA_FORK ? \ | |
362 | XFS_IFORK_DSIZE(ip) : \ | |
363 | XFS_IFORK_ASIZE(ip)) | |
364 | #define XFS_IFORK_FORMAT(ip,w) \ | |
365 | ((w) == XFS_DATA_FORK ? \ | |
366 | (ip)->i_d.di_format : \ | |
367 | (ip)->i_d.di_aformat) | |
368 | #define XFS_IFORK_FMT_SET(ip,w,n) \ | |
369 | ((w) == XFS_DATA_FORK ? \ | |
370 | ((ip)->i_d.di_format = (n)) : \ | |
371 | ((ip)->i_d.di_aformat = (n))) | |
372 | #define XFS_IFORK_NEXTENTS(ip,w) \ | |
373 | ((w) == XFS_DATA_FORK ? \ | |
374 | (ip)->i_d.di_nextents : \ | |
375 | (ip)->i_d.di_anextents) | |
376 | #define XFS_IFORK_NEXT_SET(ip,w,n) \ | |
377 | ((w) == XFS_DATA_FORK ? \ | |
378 | ((ip)->i_d.di_nextents = (n)) : \ | |
379 | ((ip)->i_d.di_anextents = (n))) | |
1da177e4 LT |
380 | |
381 | #ifdef __KERNEL__ | |
382 | ||
383 | /* | |
384 | * In-core inode flags. | |
385 | */ | |
386 | #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ | |
387 | #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ | |
388 | #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ | |
389 | #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ | |
390 | #define XFS_ISTALE 0x0010 /* inode has been staled */ | |
391 | #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ | |
392 | #define XFS_INEW 0x0040 | |
2a82b8be | 393 | #define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */ |
b3aea4ed CH |
394 | #define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */ |
395 | /* to the Linux inode state. */ | |
396 | #define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */ | |
1da177e4 LT |
397 | |
398 | /* | |
399 | * Flags for inode locking. | |
f7c66ce3 LM |
400 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
401 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 402 | */ |
f7c66ce3 LM |
403 | #define XFS_IOLOCK_EXCL (1<<0) |
404 | #define XFS_IOLOCK_SHARED (1<<1) | |
405 | #define XFS_ILOCK_EXCL (1<<2) | |
406 | #define XFS_ILOCK_SHARED (1<<3) | |
407 | #define XFS_IUNLOCK_NONOTIFY (1<<4) | |
408 | /* #define XFS_IOLOCK_NESTED (1<<5) */ | |
409 | #define XFS_EXTENT_TOKEN_RD (1<<6) | |
410 | #define XFS_SIZE_TOKEN_RD (1<<7) | |
1da177e4 | 411 | #define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) |
f7c66ce3 | 412 | #define XFS_WILLLEND (1<<8) /* Always acquire tokens for lending */ |
1da177e4 LT |
413 | #define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND) |
414 | #define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND) | |
415 | #define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND) | |
f7c66ce3 | 416 | /* TODO:XFS_SIZE_TOKEN_WANT (1<<9) */ |
1da177e4 | 417 | |
f7c66ce3 LM |
418 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
419 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ | |
420 | | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD \ | |
421 | | XFS_WILLLEND) | |
422 | ||
423 | /* | |
424 | * Flags for lockdep annotations. | |
425 | * | |
426 | * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes | |
427 | * (ie directory operations that require locking a directory inode and | |
428 | * an entry inode). The first inode gets locked with this flag so it | |
429 | * gets a lockdep subclass of 1 and the second lock will have a lockdep | |
430 | * subclass of 0. | |
431 | * | |
0f1145cc | 432 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
433 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
434 | * and each subsequent lock acquired will increment the subclass by one. | |
435 | * So the first lock acquired will have a lockdep subclass of 2, the | |
0f1145cc DC |
436 | * second lock will have a lockdep subclass of 3, and so on. It is |
437 | * the responsibility of the class builder to shift this to the correct | |
438 | * portion of the lock_mode lockdep mask. | |
f7c66ce3 | 439 | */ |
0f1145cc DC |
440 | #define XFS_LOCK_PARENT 1 |
441 | #define XFS_LOCK_INUMORDER 2 | |
442 | ||
f7c66ce3 | 443 | #define XFS_IOLOCK_SHIFT 16 |
0f1145cc | 444 | #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) |
f7c66ce3 LM |
445 | |
446 | #define XFS_ILOCK_SHIFT 24 | |
0f1145cc | 447 | #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) |
f7c66ce3 LM |
448 | |
449 | #define XFS_IOLOCK_DEP_MASK 0x00ff0000 | |
450 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
451 | #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) | |
452 | ||
453 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) | |
454 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) | |
1da177e4 LT |
455 | |
456 | /* | |
457 | * Flags for xfs_iflush() | |
458 | */ | |
459 | #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 | |
460 | #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 | |
461 | #define XFS_IFLUSH_SYNC 3 | |
462 | #define XFS_IFLUSH_ASYNC 4 | |
463 | #define XFS_IFLUSH_DELWRI 5 | |
464 | ||
1da177e4 LT |
465 | /* |
466 | * Flags for xfs_itruncate_start(). | |
467 | */ | |
468 | #define XFS_ITRUNC_DEFINITE 0x1 | |
469 | #define XFS_ITRUNC_MAYBE 0x2 | |
470 | ||
739bfb2a CH |
471 | #define XFS_ITOV(ip) ((ip)->i_vnode) |
472 | #define XFS_ITOV_NULL(ip) ((ip)->i_vnode) | |
1da177e4 LT |
473 | |
474 | /* | |
475 | * For multiple groups support: if S_ISGID bit is set in the parent | |
476 | * directory, group of new file is set to that of the parent, and | |
477 | * new subdirectory gets S_ISGID bit from parent. | |
478 | */ | |
bd186aa9 CH |
479 | #define XFS_INHERIT_GID(pip) \ |
480 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
481 | ((pip)->i_d.di_mode & S_ISGID)) | |
1da177e4 LT |
482 | |
483 | /* | |
745b1f47 | 484 | * Flags for xfs_iget() |
1da177e4 | 485 | */ |
745b1f47 NS |
486 | #define XFS_IGET_CREATE 0x1 |
487 | #define XFS_IGET_BULKSTAT 0x2 | |
1da177e4 | 488 | |
745b1f47 NS |
489 | /* |
490 | * xfs_iget.c prototypes. | |
491 | */ | |
1da177e4 LT |
492 | void xfs_ihash_init(struct xfs_mount *); |
493 | void xfs_ihash_free(struct xfs_mount *); | |
1da177e4 LT |
494 | xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, |
495 | struct xfs_trans *); | |
1da177e4 LT |
496 | int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
497 | uint, uint, xfs_inode_t **, xfs_daddr_t); | |
498 | void xfs_iput(xfs_inode_t *, uint); | |
499 | void xfs_iput_new(xfs_inode_t *, uint); | |
500 | void xfs_ilock(xfs_inode_t *, uint); | |
501 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
502 | void xfs_iunlock(xfs_inode_t *, uint); | |
503 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
504 | void xfs_iflock(xfs_inode_t *); | |
505 | int xfs_iflock_nowait(xfs_inode_t *); | |
506 | uint xfs_ilock_map_shared(xfs_inode_t *); | |
507 | void xfs_iunlock_map_shared(xfs_inode_t *, uint); | |
508 | void xfs_ifunlock(xfs_inode_t *); | |
509 | void xfs_ireclaim(xfs_inode_t *); | |
510 | int xfs_finish_reclaim(xfs_inode_t *, int, int); | |
511 | int xfs_finish_reclaim_all(struct xfs_mount *, int); | |
512 | ||
513 | /* | |
514 | * xfs_inode.c prototypes. | |
515 | */ | |
1da177e4 | 516 | int xfs_itobp(struct xfs_mount *, struct xfs_trans *, |
347d1c01 | 517 | xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **, |
b12dd342 | 518 | xfs_daddr_t, uint); |
1da177e4 | 519 | int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
745b1f47 | 520 | xfs_inode_t **, xfs_daddr_t, uint); |
1da177e4 | 521 | int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); |
31b084ae NS |
522 | int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, |
523 | xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, | |
524 | int, struct xfs_buf **, boolean_t *, xfs_inode_t **); | |
347d1c01 CH |
525 | void xfs_dinode_from_disk(struct xfs_icdinode *, |
526 | struct xfs_dinode_core *); | |
527 | void xfs_dinode_to_disk(struct xfs_dinode_core *, | |
528 | struct xfs_icdinode *); | |
529 | ||
1da177e4 | 530 | uint xfs_ip2xflags(struct xfs_inode *); |
45ba598e | 531 | uint xfs_dic2xflags(struct xfs_dinode *); |
1da177e4 LT |
532 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
533 | struct xfs_bmap_free *); | |
d3cf2094 | 534 | int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); |
1da177e4 LT |
535 | int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, |
536 | xfs_fsize_t, int, int); | |
537 | int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); | |
538 | int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *); | |
539 | void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *, | |
540 | xfs_fsize_t, int); | |
541 | ||
542 | void xfs_idestroy_fork(xfs_inode_t *, int); | |
543 | void xfs_idestroy(xfs_inode_t *); | |
544 | void xfs_idata_realloc(xfs_inode_t *, int, int); | |
545 | void xfs_iextract(xfs_inode_t *); | |
546 | void xfs_iext_realloc(xfs_inode_t *, int, int); | |
547 | void xfs_iroot_realloc(xfs_inode_t *, int, int); | |
548 | void xfs_ipin(xfs_inode_t *); | |
549 | void xfs_iunpin(xfs_inode_t *); | |
550 | int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); | |
551 | int xfs_iflush(xfs_inode_t *, uint); | |
efa80278 | 552 | void xfs_iflush_all(struct xfs_mount *); |
1da177e4 LT |
553 | void xfs_ichgtime(xfs_inode_t *, int); |
554 | xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); | |
555 | void xfs_lock_inodes(xfs_inode_t **, int, int, uint); | |
556 | ||
42fe2b1f | 557 | void xfs_synchronize_atime(xfs_inode_t *); |
5d51eff4 | 558 | void xfs_mark_inode_dirty_sync(xfs_inode_t *); |
42fe2b1f | 559 | |
a6f64d4a | 560 | xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); |
4eea22f0 MK |
561 | void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, |
562 | xfs_bmbt_irec_t *); | |
563 | void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); | |
0293ce3a | 564 | void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); |
4eea22f0 MK |
565 | void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); |
566 | void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); | |
567 | void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); | |
0293ce3a | 568 | void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); |
4eea22f0 | 569 | void xfs_iext_realloc_direct(xfs_ifork_t *, int); |
0293ce3a MK |
570 | void xfs_iext_realloc_indirect(xfs_ifork_t *, int); |
571 | void xfs_iext_indirect_to_direct(xfs_ifork_t *); | |
4eea22f0 MK |
572 | void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); |
573 | void xfs_iext_inline_to_direct(xfs_ifork_t *, int); | |
574 | void xfs_iext_destroy(xfs_ifork_t *); | |
a6f64d4a | 575 | xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); |
0293ce3a MK |
576 | xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); |
577 | xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); | |
578 | void xfs_iext_irec_init(xfs_ifork_t *); | |
579 | xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); | |
580 | void xfs_iext_irec_remove(xfs_ifork_t *, int); | |
581 | void xfs_iext_irec_compact(xfs_ifork_t *); | |
582 | void xfs_iext_irec_compact_pages(xfs_ifork_t *); | |
583 | void xfs_iext_irec_compact_full(xfs_ifork_t *); | |
584 | void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); | |
4eea22f0 | 585 | |
1da177e4 LT |
586 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
587 | ||
588 | #ifdef DEBUG | |
589 | void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t); | |
590 | #else /* DEBUG */ | |
591 | #define xfs_isize_check(mp, ip, isize) | |
592 | #endif /* DEBUG */ | |
593 | ||
594 | #if defined(DEBUG) | |
595 | void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); | |
596 | #else | |
597 | #define xfs_inobp_check(mp, bp) | |
598 | #endif /* DEBUG */ | |
599 | ||
da353b0d | 600 | extern struct kmem_zone *xfs_icluster_zone; |
1da177e4 LT |
601 | extern struct kmem_zone *xfs_ifork_zone; |
602 | extern struct kmem_zone *xfs_inode_zone; | |
603 | extern struct kmem_zone *xfs_ili_zone; | |
1da177e4 LT |
604 | |
605 | #endif /* __KERNEL__ */ | |
606 | ||
607 | #endif /* __XFS_INODE_H__ */ |