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--- old/usr/src/uts/common/sys/vnode.h
+++ new/usr/src/uts/common/sys/vnode.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
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14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
24 - * Copyright 2016 Joyent, Inc.
24 + * Copyright (c) 2014, Joyent, Inc. All rights reserved.
25 25 */
26 26
27 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 28 /* All Rights Reserved */
29 29
30 30 /*
31 31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 32 * The Regents of the University of California
33 33 * All Rights Reserved
34 34 *
35 35 * University Acknowledgment- Portions of this document are derived from
36 36 * software developed by the University of California, Berkeley, and its
37 37 * contributors.
38 38 */
39 39
40 40 #ifndef _SYS_VNODE_H
41 41 #define _SYS_VNODE_H
42 42
43 43 #include <sys/types.h>
44 44 #include <sys/t_lock.h>
45 45 #include <sys/rwstlock.h>
46 46 #include <sys/time_impl.h>
47 47 #include <sys/cred.h>
48 48 #include <sys/uio.h>
49 49 #include <sys/resource.h>
50 50 #include <vm/seg_enum.h>
51 51 #include <sys/kstat.h>
52 52 #include <sys/kmem.h>
53 53 #include <sys/list.h>
54 54 #ifdef _KERNEL
55 55 #include <sys/buf.h>
56 56 #endif /* _KERNEL */
57 57
58 58 #ifdef __cplusplus
59 59 extern "C" {
60 60 #endif
61 61
62 62 /*
63 63 * Statistics for all vnode operations.
64 64 * All operations record number of ops (since boot/mount/zero'ed).
65 65 * Certain I/O operations (read, write, readdir) also record number
66 66 * of bytes transferred.
67 67 * This appears in two places in the system: one is embedded in each
68 68 * vfs_t. There is also an array of vopstats_t structures allocated
69 69 * on a per-fstype basis.
70 70 */
71 71
72 72 #define VOPSTATS_STR "vopstats_" /* Initial string for vopstat kstats */
73 73
74 74 typedef struct vopstats {
75 75 kstat_named_t nopen; /* VOP_OPEN */
76 76 kstat_named_t nclose; /* VOP_CLOSE */
77 77 kstat_named_t nread; /* VOP_READ */
78 78 kstat_named_t read_bytes;
79 79 kstat_named_t nwrite; /* VOP_WRITE */
80 80 kstat_named_t write_bytes;
81 81 kstat_named_t nioctl; /* VOP_IOCTL */
82 82 kstat_named_t nsetfl; /* VOP_SETFL */
83 83 kstat_named_t ngetattr; /* VOP_GETATTR */
84 84 kstat_named_t nsetattr; /* VOP_SETATTR */
85 85 kstat_named_t naccess; /* VOP_ACCESS */
86 86 kstat_named_t nlookup; /* VOP_LOOKUP */
87 87 kstat_named_t ncreate; /* VOP_CREATE */
88 88 kstat_named_t nremove; /* VOP_REMOVE */
89 89 kstat_named_t nlink; /* VOP_LINK */
90 90 kstat_named_t nrename; /* VOP_RENAME */
91 91 kstat_named_t nmkdir; /* VOP_MKDIR */
92 92 kstat_named_t nrmdir; /* VOP_RMDIR */
93 93 kstat_named_t nreaddir; /* VOP_READDIR */
94 94 kstat_named_t readdir_bytes;
95 95 kstat_named_t nsymlink; /* VOP_SYMLINK */
96 96 kstat_named_t nreadlink; /* VOP_READLINK */
97 97 kstat_named_t nfsync; /* VOP_FSYNC */
98 98 kstat_named_t ninactive; /* VOP_INACTIVE */
99 99 kstat_named_t nfid; /* VOP_FID */
100 100 kstat_named_t nrwlock; /* VOP_RWLOCK */
101 101 kstat_named_t nrwunlock; /* VOP_RWUNLOCK */
102 102 kstat_named_t nseek; /* VOP_SEEK */
103 103 kstat_named_t ncmp; /* VOP_CMP */
104 104 kstat_named_t nfrlock; /* VOP_FRLOCK */
105 105 kstat_named_t nspace; /* VOP_SPACE */
106 106 kstat_named_t nrealvp; /* VOP_REALVP */
107 107 kstat_named_t ngetpage; /* VOP_GETPAGE */
108 108 kstat_named_t nputpage; /* VOP_PUTPAGE */
109 109 kstat_named_t nmap; /* VOP_MAP */
110 110 kstat_named_t naddmap; /* VOP_ADDMAP */
111 111 kstat_named_t ndelmap; /* VOP_DELMAP */
112 112 kstat_named_t npoll; /* VOP_POLL */
113 113 kstat_named_t ndump; /* VOP_DUMP */
114 114 kstat_named_t npathconf; /* VOP_PATHCONF */
115 115 kstat_named_t npageio; /* VOP_PAGEIO */
116 116 kstat_named_t ndumpctl; /* VOP_DUMPCTL */
117 117 kstat_named_t ndispose; /* VOP_DISPOSE */
118 118 kstat_named_t nsetsecattr; /* VOP_SETSECATTR */
119 119 kstat_named_t ngetsecattr; /* VOP_GETSECATTR */
120 120 kstat_named_t nshrlock; /* VOP_SHRLOCK */
121 121 kstat_named_t nvnevent; /* VOP_VNEVENT */
122 122 kstat_named_t nreqzcbuf; /* VOP_REQZCBUF */
123 123 kstat_named_t nretzcbuf; /* VOP_RETZCBUF */
124 124 } vopstats_t;
125 125
126 126 /*
127 127 * The vnode is the focus of all file activity in UNIX.
128 128 * A vnode is allocated for each active file, each current
129 129 * directory, each mounted-on file, and the root.
130 130 *
131 131 * Each vnode is usually associated with a file-system-specific node (for
132 132 * UFS, this is the in-memory inode). Generally, a vnode and an fs-node
133 133 * should be created and destroyed together as a pair.
134 134 *
135 135 * If a vnode is reused for a new file, it should be reinitialized by calling
136 136 * either vn_reinit() or vn_recycle().
137 137 *
138 138 * vn_reinit() resets the entire vnode as if it was returned by vn_alloc().
139 139 * The caller is responsible for setting up the entire vnode after calling
140 140 * vn_reinit(). This is important when using kmem caching where the vnode is
141 141 * allocated by a constructor, for instance.
142 142 *
143 143 * vn_recycle() is used when the file system keeps some state around in both
144 144 * the vnode and the associated FS-node. In UFS, for example, the inode of
145 145 * a deleted file can be reused immediately. The v_data, v_vfsp, v_op, etc.
146 146 * remains the same but certain fields related to the previous instance need
147 147 * to be reset. In particular:
148 148 * v_femhead
149 149 * v_path
150 150 * v_rdcnt, v_wrcnt
151 151 * v_mmap_read, v_mmap_write
152 152 */
153 153
154 154 /*
155 155 * vnode types. VNON means no type. These values are unrelated to
156 156 * values in on-disk inodes.
157 157 */
158 158 typedef enum vtype {
159 159 VNON = 0,
160 160 VREG = 1,
161 161 VDIR = 2,
162 162 VBLK = 3,
163 163 VCHR = 4,
164 164 VLNK = 5,
165 165 VFIFO = 6,
166 166 VDOOR = 7,
167 167 VPROC = 8,
168 168 VSOCK = 9,
169 169 VPORT = 10,
170 170 VBAD = 11
171 171 } vtype_t;
172 172
173 173 /*
174 174 * VSD - Vnode Specific Data
175 175 * Used to associate additional private data with a vnode.
176 176 */
177 177 struct vsd_node {
178 178 list_node_t vs_nodes; /* list of all VSD nodes */
179 179 uint_t vs_nkeys; /* entries in value array */
180 180 void **vs_value; /* array of value/key */
181 181 };
182 182
183 183 /*
184 184 * Many of the fields in the vnode are read-only once they are initialized
185 185 * at vnode creation time. Other fields are protected by locks.
186 186 *
187 187 * IMPORTANT: vnodes should be created ONLY by calls to vn_alloc(). They
188 188 * may not be embedded into the file-system specific node (inode). The
189 189 * size of vnodes may change.
190 190 *
191 191 * The v_lock protects:
192 192 * v_flag
193 193 * v_stream
194 194 * v_count
195 195 * v_shrlocks
196 196 * v_path
197 197 * v_vsd
198 198 * v_xattrdir
199 199 *
200 200 * A special lock (implemented by vn_vfswlock in vnode.c) protects:
201 201 * v_vfsmountedhere
202 202 *
203 203 * The global flock_lock mutex (in flock.c) protects:
204 204 * v_filocks
205 205 *
206 206 * IMPORTANT NOTE:
207 207 *
208 208 * The following vnode fields are considered public and may safely be
209 209 * accessed by file systems or other consumers:
210 210 *
211 211 * v_lock
212 212 * v_flag
213 213 * v_count
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214 214 * v_data
215 215 * v_vfsp
216 216 * v_stream
217 217 * v_type
218 218 * v_rdev
219 219 *
220 220 * ALL OTHER FIELDS SHOULD BE ACCESSED ONLY BY THE OWNER OF THAT FIELD.
221 221 * In particular, file systems should not access other fields; they may
222 222 * change or even be removed. The functionality which was once provided
223 223 * by these fields is available through vn_* functions.
224 - *
225 - * VNODE PATH THEORY:
226 - * In each vnode, the v_path field holds a cached version of the canonical
227 - * filesystem path which that node represents. Because vnodes lack contextual
228 - * information about their own name or position in the VFS hierarchy, this path
229 - * must be calculated when the vnode is instantiated by operations such as
230 - * fop_create, fop_lookup, or fop_mkdir. During said operations, both the
231 - * parent vnode (and its cached v_path) and future name are known, so the
232 - * v_path of the resulting object can easily be set.
233 - *
234 - * The caching nature of v_path is complicated in the face of directory
235 - * renames. Filesystem drivers are responsible for calling vn_renamepath when
236 - * a fop_rename operation succeeds. While the v_path on the renamed vnode will
237 - * be updated, existing children of the directory (direct, or at deeper levels)
238 - * will now possess v_path caches which are stale.
239 - *
240 - * It is expensive (and for non-directories, impossible) to recalculate stale
241 - * v_path entries during operations such as vnodetopath. The best time during
242 - * which to correct such wrongs is the same as when v_path is first
243 - * initialized: during fop_create/fop_lookup/fop_mkdir/etc, where adequate
244 - * context is available to generate the current path.
245 - *
246 - * In order to quickly detect stale v_path entries (without full lookup
247 - * verification) to trigger a v_path update, the v_path_stamp field has been
248 - * added to vnode_t. As part of successful fop_create/fop_lookup/fop_mkdir
249 - * operations, where the name and parent vnode are available, the following
250 - * rules are used to determine updates to the child:
251 - *
252 - * 1. If the parent lacks a v_path, clear any existing v_path and v_path_stamp
253 - * on the child. Until the parent v_path is refreshed to a valid state, the
254 - * child v_path must be considered invalid too.
255 - *
256 - * 2. If the child lacks a v_path (implying v_path_stamp == 0), it inherits the
257 - * v_path_stamp value from its parent and its v_path is updated.
258 - *
259 - * 3. If the child v_path_stamp is less than v_path_stamp in the parent, it is
260 - * an indication that the child v_path is stale. The v_path is updated and
261 - * v_path_stamp in the child is set to the current hrtime().
262 - *
263 - * It does _not_ inherit the parent v_path_stamp in order to propagate the
264 - * the time of v_path invalidation through the directory structure. This
265 - * prevents concurrent invalidations (operating with a now-incorrect v_path)
266 - * at deeper levels in the tree from persisting.
267 - *
268 - * 4. If the child v_path_stamp is greater or equal to the parent, no action
269 - * needs to be taken.
270 - *
271 - * Note that fop_rename operations do not follow this ruleset. They perform an
272 - * explicit update of v_path and v_path_stamp (setting it to the current time)
273 - *
274 - * With these constraints in place, v_path invalidations and updates should
275 - * proceed in a timely manner as vnodes are accessed. While there still are
276 - * limited cases where vnodetopath operations will fail, the risk is minimized.
277 224 */
278 225
279 226 struct fem_head; /* from fem.h */
280 227
281 228 typedef struct vnode {
282 229 kmutex_t v_lock; /* protects vnode fields */
283 230 uint_t v_flag; /* vnode flags (see below) */
284 231 uint_t v_count; /* reference count */
285 232 void *v_data; /* private data for fs */
286 233 struct vfs *v_vfsp; /* ptr to containing VFS */
287 234 struct stdata *v_stream; /* associated stream */
288 235 enum vtype v_type; /* vnode type */
289 236 dev_t v_rdev; /* device (VCHR, VBLK) */
290 237
291 238 /* PRIVATE FIELDS BELOW - DO NOT USE */
292 239
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293 240 struct vfs *v_vfsmountedhere; /* ptr to vfs mounted here */
294 241 struct vnodeops *v_op; /* vnode operations */
295 242 struct page *v_pages; /* vnode pages list */
296 243 struct filock *v_filocks; /* ptr to filock list */
297 244 struct shrlocklist *v_shrlocks; /* ptr to shrlock list */
298 245 krwlock_t v_nbllock; /* sync for NBMAND locks */
299 246 kcondvar_t v_cv; /* synchronize locking */
300 247 void *v_locality; /* hook for locality info */
301 248 struct fem_head *v_femhead; /* fs monitoring */
302 249 char *v_path; /* cached path */
303 - hrtime_t v_path_stamp; /* timestamp for cached path */
304 250 uint_t v_rdcnt; /* open for read count (VREG only) */
305 251 uint_t v_wrcnt; /* open for write count (VREG only) */
306 252 u_longlong_t v_mmap_read; /* mmap read count */
307 253 u_longlong_t v_mmap_write; /* mmap write count */
308 254 void *v_mpssdata; /* info for large page mappings */
309 255 void *v_fopdata; /* list of file ops event watches */
310 256 kmutex_t v_vsd_lock; /* protects v_vsd field */
311 257 struct vsd_node *v_vsd; /* vnode specific data */
312 258 struct vnode *v_xattrdir; /* unnamed extended attr dir (GFS) */
313 259 uint_t v_count_dnlc; /* dnlc reference count */
314 260 } vnode_t;
315 261
316 262 #define IS_DEVVP(vp) \
317 263 ((vp)->v_type == VCHR || (vp)->v_type == VBLK || (vp)->v_type == VFIFO)
318 264
319 265 #define VNODE_ALIGN 64
320 266 /* Count of low-order 0 bits in a vnode *, based on size and alignment. */
321 267 #if defined(_LP64)
322 268 #define VNODE_ALIGN_LOG2 8
323 269 #else
324 270 #define VNODE_ALIGN_LOG2 7
325 271 #endif
326 272
327 273 /*
328 274 * vnode flags.
329 275 */
330 276 #define VROOT 0x01 /* root of its file system */
331 277 #define VNOCACHE 0x02 /* don't keep cache pages on vnode */
332 278 #define VNOMAP 0x04 /* file cannot be mapped/faulted */
333 279 #define VDUP 0x08 /* file should be dup'ed rather then opened */
334 280 #define VNOSWAP 0x10 /* file cannot be used as virtual swap device */
335 281 #define VNOMOUNT 0x20 /* file cannot be covered by mount */
336 282 #define VISSWAP 0x40 /* vnode is being used for swap */
337 283 #define VSWAPLIKE 0x80 /* vnode acts like swap (but may not be) */
338 284
339 285 #define IS_SWAPVP(vp) (((vp)->v_flag & (VISSWAP | VSWAPLIKE)) != 0)
340 286
341 287 typedef struct vn_vfslocks_entry {
342 288 rwstlock_t ve_lock;
343 289 void *ve_vpvfs;
344 290 struct vn_vfslocks_entry *ve_next;
345 291 uint32_t ve_refcnt;
346 292 char pad[64 - sizeof (rwstlock_t) - 2 * sizeof (void *) - \
347 293 sizeof (uint32_t)];
348 294 } vn_vfslocks_entry_t;
349 295
350 296 /*
351 297 * The following two flags are used to lock the v_vfsmountedhere field
352 298 */
353 299 #define VVFSLOCK 0x100
354 300 #define VVFSWAIT 0x200
355 301
356 302 /*
357 303 * Used to serialize VM operations on a vnode
358 304 */
359 305 #define VVMLOCK 0x400
360 306
361 307 /*
362 308 * Tell vn_open() not to fail a directory open for writing but
363 309 * to go ahead and call VOP_OPEN() to let the filesystem check.
364 310 */
365 311 #define VDIROPEN 0x800
366 312
367 313 /*
368 314 * Flag to let the VM system know that this file is most likely a binary
369 315 * or shared library since it has been mmap()ed EXEC at some time.
370 316 */
371 317 #define VVMEXEC 0x1000
372 318
373 319 #define VPXFS 0x2000 /* clustering: global fs proxy vnode */
374 320
375 321 #define IS_PXFSVP(vp) ((vp)->v_flag & VPXFS)
376 322
377 323 #define V_XATTRDIR 0x4000 /* attribute unnamed directory */
378 324
379 325 #define IS_XATTRDIR(vp) ((vp)->v_flag & V_XATTRDIR)
380 326
381 327 #define V_LOCALITY 0x8000 /* whether locality aware */
382 328
383 329 /*
384 330 * Flag that indicates the VM should maintain the v_pages list with all modified
385 331 * pages on one end and unmodified pages at the other. This makes finding dirty
386 332 * pages to write back to disk much faster at the expense of taking a minor
387 333 * fault on the first store instruction which touches a writable page.
388 334 */
389 335 #define VMODSORT (0x10000)
390 336 #define IS_VMODSORT(vp) \
391 337 (pvn_vmodsort_supported != 0 && ((vp)->v_flag & VMODSORT) != 0)
392 338
393 339 #define VISSWAPFS 0x20000 /* vnode is being used for swapfs */
394 340
395 341 /*
396 342 * The mdb memstat command assumes that IS_SWAPFSVP only uses the
397 343 * vnode's v_flag field. If this changes, cache the additional
398 344 * fields in mdb; see vn_get in mdb/common/modules/genunix/memory.c
399 345 */
400 346 #define IS_SWAPFSVP(vp) (((vp)->v_flag & VISSWAPFS) != 0)
401 347
402 348 #define V_SYSATTR 0x40000 /* vnode is a GFS system attribute */
403 349
404 350 /*
405 351 * Vnode attributes. A bit-mask is supplied as part of the
406 352 * structure to indicate the attributes the caller wants to
407 353 * set (setattr) or extract (getattr).
408 354 */
409 355
410 356 /*
411 357 * Note that va_nodeid and va_nblocks are 64bit data type.
412 358 * We support large files over NFSV3. With Solaris client and
413 359 * Server that generates 64bit ino's and sizes these fields
414 360 * will overflow if they are 32 bit sizes.
415 361 */
416 362
417 363 typedef struct vattr {
418 364 uint_t va_mask; /* bit-mask of attributes */
419 365 vtype_t va_type; /* vnode type (for create) */
420 366 mode_t va_mode; /* file access mode */
421 367 uid_t va_uid; /* owner user id */
422 368 gid_t va_gid; /* owner group id */
423 369 dev_t va_fsid; /* file system id (dev for now) */
424 370 u_longlong_t va_nodeid; /* node id */
425 371 nlink_t va_nlink; /* number of references to file */
426 372 u_offset_t va_size; /* file size in bytes */
427 373 timestruc_t va_atime; /* time of last access */
428 374 timestruc_t va_mtime; /* time of last modification */
429 375 timestruc_t va_ctime; /* time of last status change */
430 376 dev_t va_rdev; /* device the file represents */
431 377 uint_t va_blksize; /* fundamental block size */
432 378 u_longlong_t va_nblocks; /* # of blocks allocated */
433 379 uint_t va_seq; /* sequence number */
434 380 } vattr_t;
435 381
436 382 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
437 383
438 384 /*
439 385 * Structure of all optional attributes.
440 386 */
441 387 typedef struct xoptattr {
442 388 timestruc_t xoa_createtime; /* Create time of file */
443 389 uint8_t xoa_archive;
444 390 uint8_t xoa_system;
445 391 uint8_t xoa_readonly;
446 392 uint8_t xoa_hidden;
447 393 uint8_t xoa_nounlink;
448 394 uint8_t xoa_immutable;
449 395 uint8_t xoa_appendonly;
450 396 uint8_t xoa_nodump;
451 397 uint8_t xoa_opaque;
452 398 uint8_t xoa_av_quarantined;
453 399 uint8_t xoa_av_modified;
454 400 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
455 401 uint8_t xoa_reparse;
456 402 uint64_t xoa_generation;
457 403 uint8_t xoa_offline;
458 404 uint8_t xoa_sparse;
459 405 } xoptattr_t;
460 406
461 407 /*
462 408 * The xvattr structure is really a variable length structure that
463 409 * is made up of:
464 410 * - The classic vattr_t (xva_vattr)
465 411 * - a 32 bit quantity (xva_mapsize) that specifies the size of the
466 412 * attribute bitmaps in 32 bit words.
467 413 * - A pointer to the returned attribute bitmap (needed because the
468 414 * previous element, the requested attribute bitmap) is variable lenth.
469 415 * - The requested attribute bitmap, which is an array of 32 bit words.
470 416 * Callers use the XVA_SET_REQ() macro to set the bits corresponding to
471 417 * the attributes that are being requested.
472 418 * - The returned attribute bitmap, which is an array of 32 bit words.
473 419 * File systems that support optional attributes use the XVA_SET_RTN()
474 420 * macro to set the bits corresponding to the attributes that are being
475 421 * returned.
476 422 * - The xoptattr_t structure which contains the attribute values
477 423 *
478 424 * xva_mapsize determines how many words in the attribute bitmaps.
479 425 * Immediately following the attribute bitmaps is the xoptattr_t.
480 426 * xva_getxoptattr() is used to get the pointer to the xoptattr_t
481 427 * section.
482 428 */
483 429
484 430 #define XVA_MAPSIZE 3 /* Size of attr bitmaps */
485 431 #define XVA_MAGIC 0x78766174 /* Magic # for verification */
486 432
487 433 /*
488 434 * The xvattr structure is an extensible structure which permits optional
489 435 * attributes to be requested/returned. File systems may or may not support
490 436 * optional attributes. They do so at their own discretion but if they do
491 437 * support optional attributes, they must register the VFSFT_XVATTR feature
492 438 * so that the optional attributes can be set/retrived.
493 439 *
494 440 * The fields of the xvattr structure are:
495 441 *
496 442 * xva_vattr - The first element of an xvattr is a legacy vattr structure
497 443 * which includes the common attributes. If AT_XVATTR is set in the va_mask
498 444 * then the entire structure is treated as an xvattr. If AT_XVATTR is not
499 445 * set, then only the xva_vattr structure can be used.
500 446 *
501 447 * xva_magic - 0x78766174 (hex for "xvat"). Magic number for verification.
502 448 *
503 449 * xva_mapsize - Size of requested and returned attribute bitmaps.
504 450 *
505 451 * xva_rtnattrmapp - Pointer to xva_rtnattrmap[]. We need this since the
506 452 * size of the array before it, xva_reqattrmap[], could change which means
507 453 * the location of xva_rtnattrmap[] could change. This will allow unbundled
508 454 * file systems to find the location of xva_rtnattrmap[] when the sizes change.
509 455 *
510 456 * xva_reqattrmap[] - Array of requested attributes. Attributes are
511 457 * represented by a specific bit in a specific element of the attribute
512 458 * map array. Callers set the bits corresponding to the attributes
513 459 * that the caller wants to get/set.
514 460 *
515 461 * xva_rtnattrmap[] - Array of attributes that the file system was able to
516 462 * process. Not all file systems support all optional attributes. This map
517 463 * informs the caller which attributes the underlying file system was able
518 464 * to set/get. (Same structure as the requested attributes array in terms
519 465 * of each attribute corresponding to specific bits and array elements.)
520 466 *
521 467 * xva_xoptattrs - Structure containing values of optional attributes.
522 468 * These values are only valid if the corresponding bits in xva_reqattrmap
523 469 * are set and the underlying file system supports those attributes.
524 470 */
525 471 typedef struct xvattr {
526 472 vattr_t xva_vattr; /* Embedded vattr structure */
527 473 uint32_t xva_magic; /* Magic Number */
528 474 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
529 475 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
530 476 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
531 477 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
532 478 xoptattr_t xva_xoptattrs; /* Optional attributes */
533 479 } xvattr_t;
534 480
535 481 #ifdef _SYSCALL32
536 482 /*
537 483 * For bigtypes time_t changed to 64 bit on the 64-bit kernel.
538 484 * Define an old version for user/kernel interface
539 485 */
540 486
541 487 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
542 488 #pragma pack(4)
543 489 #endif
544 490
545 491 typedef struct vattr32 {
546 492 uint32_t va_mask; /* bit-mask of attributes */
547 493 vtype_t va_type; /* vnode type (for create) */
548 494 mode32_t va_mode; /* file access mode */
549 495 uid32_t va_uid; /* owner user id */
550 496 gid32_t va_gid; /* owner group id */
551 497 dev32_t va_fsid; /* file system id (dev for now) */
552 498 u_longlong_t va_nodeid; /* node id */
553 499 nlink_t va_nlink; /* number of references to file */
554 500 u_offset_t va_size; /* file size in bytes */
555 501 timestruc32_t va_atime; /* time of last access */
556 502 timestruc32_t va_mtime; /* time of last modification */
557 503 timestruc32_t va_ctime; /* time of last status change */
558 504 dev32_t va_rdev; /* device the file represents */
559 505 uint32_t va_blksize; /* fundamental block size */
560 506 u_longlong_t va_nblocks; /* # of blocks allocated */
561 507 uint32_t va_seq; /* sequence number */
562 508 } vattr32_t;
563 509
564 510 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
565 511 #pragma pack()
566 512 #endif
567 513
568 514 #else /* not _SYSCALL32 */
569 515 #define vattr32 vattr
570 516 typedef vattr_t vattr32_t;
571 517 #endif /* _SYSCALL32 */
572 518
573 519 /*
574 520 * Attributes of interest to the caller of setattr or getattr.
575 521 */
576 522 #define AT_TYPE 0x00001
577 523 #define AT_MODE 0x00002
578 524 #define AT_UID 0x00004
579 525 #define AT_GID 0x00008
580 526 #define AT_FSID 0x00010
581 527 #define AT_NODEID 0x00020
582 528 #define AT_NLINK 0x00040
583 529 #define AT_SIZE 0x00080
584 530 #define AT_ATIME 0x00100
585 531 #define AT_MTIME 0x00200
586 532 #define AT_CTIME 0x00400
587 533 #define AT_RDEV 0x00800
588 534 #define AT_BLKSIZE 0x01000
589 535 #define AT_NBLOCKS 0x02000
590 536 /* 0x04000 */ /* unused */
591 537 #define AT_SEQ 0x08000
592 538 /*
593 539 * If AT_XVATTR is set then there are additional bits to process in
594 540 * the xvattr_t's attribute bitmap. If this is not set then the bitmap
595 541 * MUST be ignored. Note that this bit must be set/cleared explicitly.
596 542 * That is, setting AT_ALL will NOT set AT_XVATTR.
597 543 */
598 544 #define AT_XVATTR 0x10000
599 545
600 546 #define AT_ALL (AT_TYPE|AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|\
601 547 AT_NLINK|AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|\
602 548 AT_RDEV|AT_BLKSIZE|AT_NBLOCKS|AT_SEQ)
603 549
604 550 #define AT_STAT (AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|AT_NLINK|\
605 551 AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|AT_RDEV|AT_TYPE)
606 552
607 553 #define AT_TIMES (AT_ATIME|AT_MTIME|AT_CTIME)
608 554
609 555 #define AT_NOSET (AT_NLINK|AT_RDEV|AT_FSID|AT_NODEID|AT_TYPE|\
610 556 AT_BLKSIZE|AT_NBLOCKS|AT_SEQ)
611 557
612 558 /*
613 559 * Attribute bits used in the extensible attribute's (xva's) attribute
614 560 * bitmaps. Note that the bitmaps are made up of a variable length number
615 561 * of 32-bit words. The convention is to use XAT{n}_{attrname} where "n"
616 562 * is the element in the bitmap (starting at 1). This convention is for
617 563 * the convenience of the maintainer to keep track of which element each
618 564 * attribute belongs to.
619 565 *
620 566 * NOTE THAT CONSUMERS MUST *NOT* USE THE XATn_* DEFINES DIRECTLY. CONSUMERS
621 567 * MUST USE THE XAT_* DEFINES.
622 568 */
623 569 #define XAT0_INDEX 0LL /* Index into bitmap for XAT0 attrs */
624 570 #define XAT0_CREATETIME 0x00000001 /* Create time of file */
625 571 #define XAT0_ARCHIVE 0x00000002 /* Archive */
626 572 #define XAT0_SYSTEM 0x00000004 /* System */
627 573 #define XAT0_READONLY 0x00000008 /* Readonly */
628 574 #define XAT0_HIDDEN 0x00000010 /* Hidden */
629 575 #define XAT0_NOUNLINK 0x00000020 /* Nounlink */
630 576 #define XAT0_IMMUTABLE 0x00000040 /* immutable */
631 577 #define XAT0_APPENDONLY 0x00000080 /* appendonly */
632 578 #define XAT0_NODUMP 0x00000100 /* nodump */
633 579 #define XAT0_OPAQUE 0x00000200 /* opaque */
634 580 #define XAT0_AV_QUARANTINED 0x00000400 /* anti-virus quarantine */
635 581 #define XAT0_AV_MODIFIED 0x00000800 /* anti-virus modified */
636 582 #define XAT0_AV_SCANSTAMP 0x00001000 /* anti-virus scanstamp */
637 583 #define XAT0_REPARSE 0x00002000 /* FS reparse point */
638 584 #define XAT0_GEN 0x00004000 /* object generation number */
639 585 #define XAT0_OFFLINE 0x00008000 /* offline */
640 586 #define XAT0_SPARSE 0x00010000 /* sparse */
641 587
642 588 #define XAT0_ALL_ATTRS (XAT0_CREATETIME|XAT0_ARCHIVE|XAT0_SYSTEM| \
643 589 XAT0_READONLY|XAT0_HIDDEN|XAT0_NOUNLINK|XAT0_IMMUTABLE|XAT0_APPENDONLY| \
644 590 XAT0_NODUMP|XAT0_OPAQUE|XAT0_AV_QUARANTINED| XAT0_AV_MODIFIED| \
645 591 XAT0_AV_SCANSTAMP|XAT0_REPARSE|XATO_GEN|XAT0_OFFLINE|XAT0_SPARSE)
646 592
647 593 /* Support for XAT_* optional attributes */
648 594 #define XVA_MASK 0xffffffff /* Used to mask off 32 bits */
649 595 #define XVA_SHFT 32 /* Used to shift index */
650 596
651 597 /*
652 598 * Used to pry out the index and attribute bits from the XAT_* attributes
653 599 * defined below. Note that we're masking things down to 32 bits then
654 600 * casting to uint32_t.
655 601 */
656 602 #define XVA_INDEX(attr) ((uint32_t)(((attr) >> XVA_SHFT) & XVA_MASK))
657 603 #define XVA_ATTRBIT(attr) ((uint32_t)((attr) & XVA_MASK))
658 604
659 605 /*
660 606 * The following defines present a "flat namespace" so that consumers don't
661 607 * need to keep track of which element belongs to which bitmap entry.
662 608 *
663 609 * NOTE THAT THESE MUST NEVER BE OR-ed TOGETHER
664 610 */
665 611 #define XAT_CREATETIME ((XAT0_INDEX << XVA_SHFT) | XAT0_CREATETIME)
666 612 #define XAT_ARCHIVE ((XAT0_INDEX << XVA_SHFT) | XAT0_ARCHIVE)
667 613 #define XAT_SYSTEM ((XAT0_INDEX << XVA_SHFT) | XAT0_SYSTEM)
668 614 #define XAT_READONLY ((XAT0_INDEX << XVA_SHFT) | XAT0_READONLY)
669 615 #define XAT_HIDDEN ((XAT0_INDEX << XVA_SHFT) | XAT0_HIDDEN)
670 616 #define XAT_NOUNLINK ((XAT0_INDEX << XVA_SHFT) | XAT0_NOUNLINK)
671 617 #define XAT_IMMUTABLE ((XAT0_INDEX << XVA_SHFT) | XAT0_IMMUTABLE)
672 618 #define XAT_APPENDONLY ((XAT0_INDEX << XVA_SHFT) | XAT0_APPENDONLY)
673 619 #define XAT_NODUMP ((XAT0_INDEX << XVA_SHFT) | XAT0_NODUMP)
674 620 #define XAT_OPAQUE ((XAT0_INDEX << XVA_SHFT) | XAT0_OPAQUE)
675 621 #define XAT_AV_QUARANTINED ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_QUARANTINED)
676 622 #define XAT_AV_MODIFIED ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_MODIFIED)
677 623 #define XAT_AV_SCANSTAMP ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_SCANSTAMP)
678 624 #define XAT_REPARSE ((XAT0_INDEX << XVA_SHFT) | XAT0_REPARSE)
679 625 #define XAT_GEN ((XAT0_INDEX << XVA_SHFT) | XAT0_GEN)
680 626 #define XAT_OFFLINE ((XAT0_INDEX << XVA_SHFT) | XAT0_OFFLINE)
681 627 #define XAT_SPARSE ((XAT0_INDEX << XVA_SHFT) | XAT0_SPARSE)
682 628
683 629 /*
684 630 * The returned attribute map array (xva_rtnattrmap[]) is located past the
685 631 * requested attribute map array (xva_reqattrmap[]). Its location changes
686 632 * when the array sizes change. We use a separate pointer in a known location
687 633 * (xva_rtnattrmapp) to hold the location of xva_rtnattrmap[]. This is
688 634 * set in xva_init()
689 635 */
690 636 #define XVA_RTNATTRMAP(xvap) ((xvap)->xva_rtnattrmapp)
691 637
692 638 /*
693 639 * XVA_SET_REQ() sets an attribute bit in the proper element in the bitmap
694 640 * of requested attributes (xva_reqattrmap[]).
695 641 */
696 642 #define XVA_SET_REQ(xvap, attr) \
697 643 ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR); \
698 644 ASSERT((xvap)->xva_magic == XVA_MAGIC); \
699 645 (xvap)->xva_reqattrmap[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr)
700 646 /*
701 647 * XVA_CLR_REQ() clears an attribute bit in the proper element in the bitmap
702 648 * of requested attributes (xva_reqattrmap[]).
703 649 */
704 650 #define XVA_CLR_REQ(xvap, attr) \
705 651 ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR); \
706 652 ASSERT((xvap)->xva_magic == XVA_MAGIC); \
707 653 (xvap)->xva_reqattrmap[XVA_INDEX(attr)] &= ~XVA_ATTRBIT(attr)
708 654
709 655 /*
710 656 * XVA_SET_RTN() sets an attribute bit in the proper element in the bitmap
711 657 * of returned attributes (xva_rtnattrmap[]).
712 658 */
713 659 #define XVA_SET_RTN(xvap, attr) \
714 660 ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR); \
715 661 ASSERT((xvap)->xva_magic == XVA_MAGIC); \
716 662 (XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr)
717 663
718 664 /*
719 665 * XVA_ISSET_REQ() checks the requested attribute bitmap (xva_reqattrmap[])
720 666 * to see of the corresponding attribute bit is set. If so, returns non-zero.
721 667 */
722 668 #define XVA_ISSET_REQ(xvap, attr) \
723 669 ((((xvap)->xva_vattr.va_mask | AT_XVATTR) && \
724 670 ((xvap)->xva_magic == XVA_MAGIC) && \
725 671 ((xvap)->xva_mapsize > XVA_INDEX(attr))) ? \
726 672 ((xvap)->xva_reqattrmap[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0)
727 673
728 674 /*
729 675 * XVA_ISSET_RTN() checks the returned attribute bitmap (xva_rtnattrmap[])
730 676 * to see of the corresponding attribute bit is set. If so, returns non-zero.
731 677 */
732 678 #define XVA_ISSET_RTN(xvap, attr) \
733 679 ((((xvap)->xva_vattr.va_mask | AT_XVATTR) && \
734 680 ((xvap)->xva_magic == XVA_MAGIC) && \
735 681 ((xvap)->xva_mapsize > XVA_INDEX(attr))) ? \
736 682 ((XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0)
737 683
738 684 /*
739 685 * Modes. Some values same as S_xxx entries from stat.h for convenience.
740 686 */
741 687 #define VSUID 04000 /* set user id on execution */
742 688 #define VSGID 02000 /* set group id on execution */
743 689 #define VSVTX 01000 /* save swapped text even after use */
744 690
745 691 /*
746 692 * Permissions.
747 693 */
748 694 #define VREAD 00400
749 695 #define VWRITE 00200
750 696 #define VEXEC 00100
751 697
752 698 #define MODEMASK 07777 /* mode bits plus permission bits */
753 699 #define PERMMASK 00777 /* permission bits */
754 700
755 701 /*
756 702 * VOP_ACCESS flags
757 703 */
758 704 #define V_ACE_MASK 0x1 /* mask represents NFSv4 ACE permissions */
759 705 #define V_APPEND 0x2 /* want to do append only check */
760 706
761 707 /*
762 708 * Check whether mandatory file locking is enabled.
763 709 */
764 710
765 711 #define MANDMODE(mode) (((mode) & (VSGID|(VEXEC>>3))) == VSGID)
766 712 #define MANDLOCK(vp, mode) ((vp)->v_type == VREG && MANDMODE(mode))
767 713
768 714 /*
769 715 * Flags for vnode operations.
770 716 */
771 717 enum rm { RMFILE, RMDIRECTORY }; /* rm or rmdir (remove) */
772 718 enum symfollow { NO_FOLLOW, FOLLOW }; /* follow symlinks (or not) */
773 719 enum vcexcl { NONEXCL, EXCL }; /* (non)excl create */
774 720 enum create { CRCREAT, CRMKNOD, CRMKDIR }; /* reason for create */
775 721
776 722 typedef enum rm rm_t;
777 723 typedef enum symfollow symfollow_t;
778 724 typedef enum vcexcl vcexcl_t;
779 725 typedef enum create create_t;
780 726
781 727 /*
782 728 * Vnode Events - Used by VOP_VNEVENT
783 729 * The VE_PRE_RENAME_* events fire before the rename operation and are
784 730 * primarily used for specialized applications, such as NFSv4 delegation, which
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785 731 * need to know about rename before it occurs.
786 732 */
787 733 typedef enum vnevent {
788 734 VE_SUPPORT = 0, /* Query */
789 735 VE_RENAME_SRC = 1, /* Rename, with vnode as source */
790 736 VE_RENAME_DEST = 2, /* Rename, with vnode as target/destination */
791 737 VE_REMOVE = 3, /* Remove of vnode's name */
792 738 VE_RMDIR = 4, /* Remove of directory vnode's name */
793 739 VE_CREATE = 5, /* Create with vnode's name which exists */
794 740 VE_LINK = 6, /* Link with vnode's name as source */
795 - VE_RENAME_DEST_DIR = 7, /* Rename with vnode as target dir */
741 + VE_RENAME_DEST_DIR = 7, /* Rename with vnode as target dir */
796 742 VE_MOUNTEDOVER = 8, /* File or Filesystem got mounted over vnode */
797 743 VE_TRUNCATE = 9, /* Truncate */
798 744 VE_PRE_RENAME_SRC = 10, /* Pre-rename, with vnode as source */
799 745 VE_PRE_RENAME_DEST = 11, /* Pre-rename, with vnode as target/dest. */
800 746 VE_PRE_RENAME_DEST_DIR = 12, /* Pre-rename with vnode as target dir */
801 747 VE_RENAME_SRC_DIR = 13, /* Rename with vnode as source dir */
802 748 VE_RESIZE = 14 /* Resize/truncate to non-zero offset */
803 749 } vnevent_t;
804 750
805 751 /*
806 752 * Values for checking vnode open and map counts
807 753 */
808 754 enum v_mode { V_READ, V_WRITE, V_RDORWR, V_RDANDWR };
809 755
810 756 typedef enum v_mode v_mode_t;
811 757
812 758 #define V_TRUE 1
813 759 #define V_FALSE 0
814 760
815 761 /*
816 762 * Structure used on VOP_GETSECATTR and VOP_SETSECATTR operations
817 763 */
818 764
819 765 typedef struct vsecattr {
820 766 uint_t vsa_mask; /* See below */
821 767 int vsa_aclcnt; /* ACL entry count */
822 768 void *vsa_aclentp; /* pointer to ACL entries */
823 769 int vsa_dfaclcnt; /* default ACL entry count */
824 770 void *vsa_dfaclentp; /* pointer to default ACL entries */
825 771 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
826 772 uint_t vsa_aclflags; /* ACE ACL flags */
827 773 } vsecattr_t;
828 774
829 775 /* vsa_mask values */
830 776 #define VSA_ACL 0x0001
831 777 #define VSA_ACLCNT 0x0002
832 778 #define VSA_DFACL 0x0004
833 779 #define VSA_DFACLCNT 0x0008
834 780 #define VSA_ACE 0x0010
835 781 #define VSA_ACECNT 0x0020
836 782 #define VSA_ACE_ALLTYPES 0x0040
837 783 #define VSA_ACE_ACLFLAGS 0x0080 /* get/set ACE ACL flags */
838 784
839 785 /*
840 786 * Structure used by various vnode operations to determine
841 787 * the context (pid, host, identity) of a caller.
842 788 *
843 789 * The cc_caller_id is used to identify one or more callers who invoke
844 790 * operations, possibly on behalf of others. For example, the NFS
845 791 * server could have it's own cc_caller_id which can be detected by
846 792 * vnode/vfs operations or (FEM) monitors on those operations. New
847 793 * caller IDs are generated by fs_new_caller_id().
848 794 */
849 795 typedef struct caller_context {
850 796 pid_t cc_pid; /* Process ID of the caller */
851 797 int cc_sysid; /* System ID, used for remote calls */
852 798 u_longlong_t cc_caller_id; /* Identifier for (set of) caller(s) */
853 799 ulong_t cc_flags;
854 800 } caller_context_t;
855 801
856 802 /*
857 803 * Flags for caller context. The caller sets CC_DONTBLOCK if it does not
858 804 * want to block inside of a FEM monitor. The monitor will set CC_WOULDBLOCK
859 805 * and return EAGAIN if the operation would have blocked.
860 806 */
861 807 #define CC_WOULDBLOCK 0x01
862 808 #define CC_DONTBLOCK 0x02
863 809
864 810 /*
865 811 * Structure tags for function prototypes, defined elsewhere.
866 812 */
867 813 struct pathname;
868 814 struct fid;
869 815 struct flock64;
870 816 struct flk_callback;
871 817 struct shrlock;
872 818 struct page;
873 819 struct seg;
874 820 struct as;
875 821 struct pollhead;
876 822 struct taskq;
877 823
878 824 #ifdef _KERNEL
879 825
880 826 /*
881 827 * VNODE_OPS defines all the vnode operations. It is used to define
882 828 * the vnodeops structure (below) and the fs_func_p union (vfs_opreg.h).
883 829 */
884 830 #define VNODE_OPS \
885 831 int (*vop_open)(vnode_t **, int, cred_t *, \
886 832 caller_context_t *); \
887 833 int (*vop_close)(vnode_t *, int, int, offset_t, cred_t *, \
888 834 caller_context_t *); \
889 835 int (*vop_read)(vnode_t *, uio_t *, int, cred_t *, \
890 836 caller_context_t *); \
891 837 int (*vop_write)(vnode_t *, uio_t *, int, cred_t *, \
892 838 caller_context_t *); \
893 839 int (*vop_ioctl)(vnode_t *, int, intptr_t, int, cred_t *, \
894 840 int *, caller_context_t *); \
895 841 int (*vop_setfl)(vnode_t *, int, int, cred_t *, \
896 842 caller_context_t *); \
897 843 int (*vop_getattr)(vnode_t *, vattr_t *, int, cred_t *, \
898 844 caller_context_t *); \
899 845 int (*vop_setattr)(vnode_t *, vattr_t *, int, cred_t *, \
900 846 caller_context_t *); \
901 847 int (*vop_access)(vnode_t *, int, int, cred_t *, \
902 848 caller_context_t *); \
903 849 int (*vop_lookup)(vnode_t *, char *, vnode_t **, \
904 850 struct pathname *, \
905 851 int, vnode_t *, cred_t *, \
906 852 caller_context_t *, int *, \
907 853 struct pathname *); \
908 854 int (*vop_create)(vnode_t *, char *, vattr_t *, vcexcl_t, \
909 855 int, vnode_t **, cred_t *, int, \
910 856 caller_context_t *, vsecattr_t *); \
911 857 int (*vop_remove)(vnode_t *, char *, cred_t *, \
912 858 caller_context_t *, int); \
913 859 int (*vop_link)(vnode_t *, vnode_t *, char *, cred_t *, \
914 860 caller_context_t *, int); \
915 861 int (*vop_rename)(vnode_t *, char *, vnode_t *, char *, \
916 862 cred_t *, caller_context_t *, int); \
917 863 int (*vop_mkdir)(vnode_t *, char *, vattr_t *, vnode_t **, \
918 864 cred_t *, caller_context_t *, int, \
919 865 vsecattr_t *); \
920 866 int (*vop_rmdir)(vnode_t *, char *, vnode_t *, cred_t *, \
921 867 caller_context_t *, int); \
922 868 int (*vop_readdir)(vnode_t *, uio_t *, cred_t *, int *, \
923 869 caller_context_t *, int); \
924 870 int (*vop_symlink)(vnode_t *, char *, vattr_t *, char *, \
925 871 cred_t *, caller_context_t *, int); \
926 872 int (*vop_readlink)(vnode_t *, uio_t *, cred_t *, \
927 873 caller_context_t *); \
928 874 int (*vop_fsync)(vnode_t *, int, cred_t *, \
929 875 caller_context_t *); \
930 876 void (*vop_inactive)(vnode_t *, cred_t *, \
931 877 caller_context_t *); \
932 878 int (*vop_fid)(vnode_t *, struct fid *, \
933 879 caller_context_t *); \
934 880 int (*vop_rwlock)(vnode_t *, int, caller_context_t *); \
935 881 void (*vop_rwunlock)(vnode_t *, int, caller_context_t *); \
936 882 int (*vop_seek)(vnode_t *, offset_t, offset_t *, \
937 883 caller_context_t *); \
938 884 int (*vop_cmp)(vnode_t *, vnode_t *, caller_context_t *); \
939 885 int (*vop_frlock)(vnode_t *, int, struct flock64 *, \
940 886 int, offset_t, \
941 887 struct flk_callback *, cred_t *, \
942 888 caller_context_t *); \
943 889 int (*vop_space)(vnode_t *, int, struct flock64 *, \
944 890 int, offset_t, \
945 891 cred_t *, caller_context_t *); \
946 892 int (*vop_realvp)(vnode_t *, vnode_t **, \
947 893 caller_context_t *); \
948 894 int (*vop_getpage)(vnode_t *, offset_t, size_t, uint_t *, \
949 895 struct page **, size_t, struct seg *, \
950 896 caddr_t, enum seg_rw, cred_t *, \
951 897 caller_context_t *); \
952 898 int (*vop_putpage)(vnode_t *, offset_t, size_t, \
953 899 int, cred_t *, caller_context_t *); \
954 900 int (*vop_map)(vnode_t *, offset_t, struct as *, \
955 901 caddr_t *, size_t, \
956 902 uchar_t, uchar_t, uint_t, cred_t *, \
957 903 caller_context_t *); \
958 904 int (*vop_addmap)(vnode_t *, offset_t, struct as *, \
959 905 caddr_t, size_t, \
960 906 uchar_t, uchar_t, uint_t, cred_t *, \
961 907 caller_context_t *); \
962 908 int (*vop_delmap)(vnode_t *, offset_t, struct as *, \
963 909 caddr_t, size_t, \
964 910 uint_t, uint_t, uint_t, cred_t *, \
965 911 caller_context_t *); \
966 912 int (*vop_poll)(vnode_t *, short, int, short *, \
967 913 struct pollhead **, \
968 914 caller_context_t *); \
969 915 int (*vop_dump)(vnode_t *, caddr_t, offset_t, offset_t, \
970 916 caller_context_t *); \
971 917 int (*vop_pathconf)(vnode_t *, int, ulong_t *, cred_t *, \
972 918 caller_context_t *); \
973 919 int (*vop_pageio)(vnode_t *, struct page *, \
974 920 u_offset_t, size_t, int, cred_t *, \
975 921 caller_context_t *); \
976 922 int (*vop_dumpctl)(vnode_t *, int, offset_t *, \
977 923 caller_context_t *); \
978 924 void (*vop_dispose)(vnode_t *, struct page *, \
979 925 int, int, cred_t *, \
980 926 caller_context_t *); \
981 927 int (*vop_setsecattr)(vnode_t *, vsecattr_t *, \
982 928 int, cred_t *, caller_context_t *); \
983 929 int (*vop_getsecattr)(vnode_t *, vsecattr_t *, \
984 930 int, cred_t *, caller_context_t *); \
985 931 int (*vop_shrlock)(vnode_t *, int, struct shrlock *, \
986 932 int, cred_t *, caller_context_t *); \
987 933 int (*vop_vnevent)(vnode_t *, vnevent_t, vnode_t *, \
988 934 char *, caller_context_t *); \
989 935 int (*vop_reqzcbuf)(vnode_t *, enum uio_rw, xuio_t *, \
990 936 cred_t *, caller_context_t *); \
991 937 int (*vop_retzcbuf)(vnode_t *, xuio_t *, cred_t *, \
992 938 caller_context_t *)
993 939 /* NB: No ";" */
994 940
995 941 /*
996 942 * Operations on vnodes. Note: File systems must never operate directly
997 943 * on a 'vnodeops' structure -- it WILL change in future releases! They
998 944 * must use vn_make_ops() to create the structure.
999 945 */
1000 946 typedef struct vnodeops {
1001 947 const char *vnop_name;
1002 948 VNODE_OPS; /* Signatures of all vnode operations (vops) */
1003 949 } vnodeops_t;
1004 950
1005 951 typedef int (*fs_generic_func_p) (); /* Generic vop/vfsop/femop/fsemop ptr */
1006 952
1007 953 extern int fop_open(vnode_t **, int, cred_t *, caller_context_t *);
1008 954 extern int fop_close(vnode_t *, int, int, offset_t, cred_t *,
1009 955 caller_context_t *);
1010 956 extern int fop_read(vnode_t *, uio_t *, int, cred_t *, caller_context_t *);
1011 957 extern int fop_write(vnode_t *, uio_t *, int, cred_t *,
1012 958 caller_context_t *);
1013 959 extern int fop_ioctl(vnode_t *, int, intptr_t, int, cred_t *, int *,
1014 960 caller_context_t *);
1015 961 extern int fop_setfl(vnode_t *, int, int, cred_t *, caller_context_t *);
1016 962 extern int fop_getattr(vnode_t *, vattr_t *, int, cred_t *,
1017 963 caller_context_t *);
1018 964 extern int fop_setattr(vnode_t *, vattr_t *, int, cred_t *,
1019 965 caller_context_t *);
1020 966 extern int fop_access(vnode_t *, int, int, cred_t *, caller_context_t *);
1021 967 extern int fop_lookup(vnode_t *, char *, vnode_t **, struct pathname *,
1022 968 int, vnode_t *, cred_t *, caller_context_t *,
1023 969 int *, struct pathname *);
1024 970 extern int fop_create(vnode_t *, char *, vattr_t *, vcexcl_t, int,
1025 971 vnode_t **, cred_t *, int, caller_context_t *,
1026 972 vsecattr_t *);
1027 973 extern int fop_remove(vnode_t *vp, char *, cred_t *, caller_context_t *,
1028 974 int);
1029 975 extern int fop_link(vnode_t *, vnode_t *, char *, cred_t *,
1030 976 caller_context_t *, int);
1031 977 extern int fop_rename(vnode_t *, char *, vnode_t *, char *, cred_t *,
1032 978 caller_context_t *, int);
1033 979 extern int fop_mkdir(vnode_t *, char *, vattr_t *, vnode_t **, cred_t *,
1034 980 caller_context_t *, int, vsecattr_t *);
1035 981 extern int fop_rmdir(vnode_t *, char *, vnode_t *, cred_t *,
1036 982 caller_context_t *, int);
1037 983 extern int fop_readdir(vnode_t *, uio_t *, cred_t *, int *,
1038 984 caller_context_t *, int);
1039 985 extern int fop_symlink(vnode_t *, char *, vattr_t *, char *, cred_t *,
1040 986 caller_context_t *, int);
1041 987 extern int fop_readlink(vnode_t *, uio_t *, cred_t *, caller_context_t *);
1042 988 extern int fop_fsync(vnode_t *, int, cred_t *, caller_context_t *);
1043 989 extern void fop_inactive(vnode_t *, cred_t *, caller_context_t *);
1044 990 extern int fop_fid(vnode_t *, struct fid *, caller_context_t *);
1045 991 extern int fop_rwlock(vnode_t *, int, caller_context_t *);
1046 992 extern void fop_rwunlock(vnode_t *, int, caller_context_t *);
1047 993 extern int fop_seek(vnode_t *, offset_t, offset_t *, caller_context_t *);
1048 994 extern int fop_cmp(vnode_t *, vnode_t *, caller_context_t *);
1049 995 extern int fop_frlock(vnode_t *, int, struct flock64 *, int, offset_t,
1050 996 struct flk_callback *, cred_t *,
1051 997 caller_context_t *);
1052 998 extern int fop_space(vnode_t *, int, struct flock64 *, int, offset_t,
1053 999 cred_t *, caller_context_t *);
1054 1000 extern int fop_realvp(vnode_t *, vnode_t **, caller_context_t *);
1055 1001 extern int fop_getpage(vnode_t *, offset_t, size_t, uint_t *,
1056 1002 struct page **, size_t, struct seg *,
1057 1003 caddr_t, enum seg_rw, cred_t *,
1058 1004 caller_context_t *);
1059 1005 extern int fop_putpage(vnode_t *, offset_t, size_t, int, cred_t *,
1060 1006 caller_context_t *);
1061 1007 extern int fop_map(vnode_t *, offset_t, struct as *, caddr_t *, size_t,
1062 1008 uchar_t, uchar_t, uint_t, cred_t *cr,
1063 1009 caller_context_t *);
1064 1010 extern int fop_addmap(vnode_t *, offset_t, struct as *, caddr_t, size_t,
1065 1011 uchar_t, uchar_t, uint_t, cred_t *,
1066 1012 caller_context_t *);
1067 1013 extern int fop_delmap(vnode_t *, offset_t, struct as *, caddr_t, size_t,
1068 1014 uint_t, uint_t, uint_t, cred_t *,
1069 1015 caller_context_t *);
1070 1016 extern int fop_poll(vnode_t *, short, int, short *, struct pollhead **,
1071 1017 caller_context_t *);
1072 1018 extern int fop_dump(vnode_t *, caddr_t, offset_t, offset_t,
1073 1019 caller_context_t *);
1074 1020 extern int fop_pathconf(vnode_t *, int, ulong_t *, cred_t *,
1075 1021 caller_context_t *);
1076 1022 extern int fop_pageio(vnode_t *, struct page *, u_offset_t, size_t, int,
1077 1023 cred_t *, caller_context_t *);
1078 1024 extern int fop_dumpctl(vnode_t *, int, offset_t *, caller_context_t *);
1079 1025 extern void fop_dispose(vnode_t *, struct page *, int, int, cred_t *,
1080 1026 caller_context_t *);
1081 1027 extern int fop_setsecattr(vnode_t *, vsecattr_t *, int, cred_t *,
1082 1028 caller_context_t *);
1083 1029 extern int fop_getsecattr(vnode_t *, vsecattr_t *, int, cred_t *,
1084 1030 caller_context_t *);
1085 1031 extern int fop_shrlock(vnode_t *, int, struct shrlock *, int, cred_t *,
1086 1032 caller_context_t *);
1087 1033 extern int fop_vnevent(vnode_t *, vnevent_t, vnode_t *, char *,
1088 1034 caller_context_t *);
1089 1035 extern int fop_reqzcbuf(vnode_t *, enum uio_rw, xuio_t *, cred_t *,
1090 1036 caller_context_t *);
1091 1037 extern int fop_retzcbuf(vnode_t *, xuio_t *, cred_t *, caller_context_t *);
1092 1038
1093 1039 #endif /* _KERNEL */
1094 1040
1095 1041 #define VOP_OPEN(vpp, mode, cr, ct) \
1096 1042 fop_open(vpp, mode, cr, ct)
1097 1043 #define VOP_CLOSE(vp, f, c, o, cr, ct) \
1098 1044 fop_close(vp, f, c, o, cr, ct)
1099 1045 #define VOP_READ(vp, uiop, iof, cr, ct) \
1100 1046 fop_read(vp, uiop, iof, cr, ct)
1101 1047 #define VOP_WRITE(vp, uiop, iof, cr, ct) \
1102 1048 fop_write(vp, uiop, iof, cr, ct)
1103 1049 #define VOP_IOCTL(vp, cmd, a, f, cr, rvp, ct) \
1104 1050 fop_ioctl(vp, cmd, a, f, cr, rvp, ct)
1105 1051 #define VOP_SETFL(vp, f, a, cr, ct) \
1106 1052 fop_setfl(vp, f, a, cr, ct)
1107 1053 #define VOP_GETATTR(vp, vap, f, cr, ct) \
1108 1054 fop_getattr(vp, vap, f, cr, ct)
1109 1055 #define VOP_SETATTR(vp, vap, f, cr, ct) \
1110 1056 fop_setattr(vp, vap, f, cr, ct)
1111 1057 #define VOP_ACCESS(vp, mode, f, cr, ct) \
1112 1058 fop_access(vp, mode, f, cr, ct)
1113 1059 #define VOP_LOOKUP(vp, cp, vpp, pnp, f, rdir, cr, ct, defp, rpnp) \
1114 1060 fop_lookup(vp, cp, vpp, pnp, f, rdir, cr, ct, defp, rpnp)
1115 1061 #define VOP_CREATE(dvp, p, vap, ex, mode, vpp, cr, flag, ct, vsap) \
1116 1062 fop_create(dvp, p, vap, ex, mode, vpp, cr, flag, ct, vsap)
1117 1063 #define VOP_REMOVE(dvp, p, cr, ct, f) \
1118 1064 fop_remove(dvp, p, cr, ct, f)
1119 1065 #define VOP_LINK(tdvp, fvp, p, cr, ct, f) \
1120 1066 fop_link(tdvp, fvp, p, cr, ct, f)
1121 1067 #define VOP_RENAME(fvp, fnm, tdvp, tnm, cr, ct, f) \
1122 1068 fop_rename(fvp, fnm, tdvp, tnm, cr, ct, f)
1123 1069 #define VOP_MKDIR(dp, p, vap, vpp, cr, ct, f, vsap) \
1124 1070 fop_mkdir(dp, p, vap, vpp, cr, ct, f, vsap)
1125 1071 #define VOP_RMDIR(dp, p, cdir, cr, ct, f) \
1126 1072 fop_rmdir(dp, p, cdir, cr, ct, f)
1127 1073 #define VOP_READDIR(vp, uiop, cr, eofp, ct, f) \
1128 1074 fop_readdir(vp, uiop, cr, eofp, ct, f)
1129 1075 #define VOP_SYMLINK(dvp, lnm, vap, tnm, cr, ct, f) \
1130 1076 fop_symlink(dvp, lnm, vap, tnm, cr, ct, f)
1131 1077 #define VOP_READLINK(vp, uiop, cr, ct) \
1132 1078 fop_readlink(vp, uiop, cr, ct)
1133 1079 #define VOP_FSYNC(vp, syncflag, cr, ct) \
1134 1080 fop_fsync(vp, syncflag, cr, ct)
1135 1081 #define VOP_INACTIVE(vp, cr, ct) \
1136 1082 fop_inactive(vp, cr, ct)
1137 1083 #define VOP_FID(vp, fidp, ct) \
1138 1084 fop_fid(vp, fidp, ct)
1139 1085 #define VOP_RWLOCK(vp, w, ct) \
1140 1086 fop_rwlock(vp, w, ct)
1141 1087 #define VOP_RWUNLOCK(vp, w, ct) \
1142 1088 fop_rwunlock(vp, w, ct)
1143 1089 #define VOP_SEEK(vp, ooff, noffp, ct) \
1144 1090 fop_seek(vp, ooff, noffp, ct)
1145 1091 #define VOP_CMP(vp1, vp2, ct) \
1146 1092 fop_cmp(vp1, vp2, ct)
1147 1093 #define VOP_FRLOCK(vp, cmd, a, f, o, cb, cr, ct) \
1148 1094 fop_frlock(vp, cmd, a, f, o, cb, cr, ct)
1149 1095 #define VOP_SPACE(vp, cmd, a, f, o, cr, ct) \
1150 1096 fop_space(vp, cmd, a, f, o, cr, ct)
1151 1097 #define VOP_REALVP(vp1, vp2, ct) \
1152 1098 fop_realvp(vp1, vp2, ct)
1153 1099 #define VOP_GETPAGE(vp, of, sz, pr, pl, ps, sg, a, rw, cr, ct) \
1154 1100 fop_getpage(vp, of, sz, pr, pl, ps, sg, a, rw, cr, ct)
1155 1101 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) \
1156 1102 fop_putpage(vp, of, sz, fl, cr, ct)
1157 1103 #define VOP_MAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \
1158 1104 fop_map(vp, of, as, a, sz, p, mp, fl, cr, ct)
1159 1105 #define VOP_ADDMAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \
1160 1106 fop_addmap(vp, of, as, a, sz, p, mp, fl, cr, ct)
1161 1107 #define VOP_DELMAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \
1162 1108 fop_delmap(vp, of, as, a, sz, p, mp, fl, cr, ct)
1163 1109 #define VOP_POLL(vp, events, anyyet, reventsp, phpp, ct) \
1164 1110 fop_poll(vp, events, anyyet, reventsp, phpp, ct)
1165 1111 #define VOP_DUMP(vp, addr, bn, count, ct) \
1166 1112 fop_dump(vp, addr, bn, count, ct)
1167 1113 #define VOP_PATHCONF(vp, cmd, valp, cr, ct) \
1168 1114 fop_pathconf(vp, cmd, valp, cr, ct)
1169 1115 #define VOP_PAGEIO(vp, pp, io_off, io_len, flags, cr, ct) \
1170 1116 fop_pageio(vp, pp, io_off, io_len, flags, cr, ct)
1171 1117 #define VOP_DUMPCTL(vp, action, blkp, ct) \
1172 1118 fop_dumpctl(vp, action, blkp, ct)
1173 1119 #define VOP_DISPOSE(vp, pp, flag, dn, cr, ct) \
1174 1120 fop_dispose(vp, pp, flag, dn, cr, ct)
1175 1121 #define VOP_GETSECATTR(vp, vsap, f, cr, ct) \
1176 1122 fop_getsecattr(vp, vsap, f, cr, ct)
1177 1123 #define VOP_SETSECATTR(vp, vsap, f, cr, ct) \
1178 1124 fop_setsecattr(vp, vsap, f, cr, ct)
1179 1125 #define VOP_SHRLOCK(vp, cmd, shr, f, cr, ct) \
1180 1126 fop_shrlock(vp, cmd, shr, f, cr, ct)
1181 1127 #define VOP_VNEVENT(vp, vnevent, dvp, fnm, ct) \
1182 1128 fop_vnevent(vp, vnevent, dvp, fnm, ct)
1183 1129 #define VOP_REQZCBUF(vp, rwflag, xuiop, cr, ct) \
1184 1130 fop_reqzcbuf(vp, rwflag, xuiop, cr, ct)
1185 1131 #define VOP_RETZCBUF(vp, xuiop, cr, ct) \
1186 1132 fop_retzcbuf(vp, xuiop, cr, ct)
1187 1133
1188 1134 #define VOPNAME_OPEN "open"
1189 1135 #define VOPNAME_CLOSE "close"
1190 1136 #define VOPNAME_READ "read"
1191 1137 #define VOPNAME_WRITE "write"
1192 1138 #define VOPNAME_IOCTL "ioctl"
1193 1139 #define VOPNAME_SETFL "setfl"
1194 1140 #define VOPNAME_GETATTR "getattr"
1195 1141 #define VOPNAME_SETATTR "setattr"
1196 1142 #define VOPNAME_ACCESS "access"
1197 1143 #define VOPNAME_LOOKUP "lookup"
1198 1144 #define VOPNAME_CREATE "create"
1199 1145 #define VOPNAME_REMOVE "remove"
1200 1146 #define VOPNAME_LINK "link"
1201 1147 #define VOPNAME_RENAME "rename"
1202 1148 #define VOPNAME_MKDIR "mkdir"
1203 1149 #define VOPNAME_RMDIR "rmdir"
1204 1150 #define VOPNAME_READDIR "readdir"
1205 1151 #define VOPNAME_SYMLINK "symlink"
1206 1152 #define VOPNAME_READLINK "readlink"
1207 1153 #define VOPNAME_FSYNC "fsync"
1208 1154 #define VOPNAME_INACTIVE "inactive"
1209 1155 #define VOPNAME_FID "fid"
1210 1156 #define VOPNAME_RWLOCK "rwlock"
1211 1157 #define VOPNAME_RWUNLOCK "rwunlock"
1212 1158 #define VOPNAME_SEEK "seek"
1213 1159 #define VOPNAME_CMP "cmp"
1214 1160 #define VOPNAME_FRLOCK "frlock"
1215 1161 #define VOPNAME_SPACE "space"
1216 1162 #define VOPNAME_REALVP "realvp"
1217 1163 #define VOPNAME_GETPAGE "getpage"
1218 1164 #define VOPNAME_PUTPAGE "putpage"
1219 1165 #define VOPNAME_MAP "map"
1220 1166 #define VOPNAME_ADDMAP "addmap"
1221 1167 #define VOPNAME_DELMAP "delmap"
1222 1168 #define VOPNAME_POLL "poll"
1223 1169 #define VOPNAME_DUMP "dump"
1224 1170 #define VOPNAME_PATHCONF "pathconf"
1225 1171 #define VOPNAME_PAGEIO "pageio"
1226 1172 #define VOPNAME_DUMPCTL "dumpctl"
1227 1173 #define VOPNAME_DISPOSE "dispose"
1228 1174 #define VOPNAME_GETSECATTR "getsecattr"
1229 1175 #define VOPNAME_SETSECATTR "setsecattr"
1230 1176 #define VOPNAME_SHRLOCK "shrlock"
1231 1177 #define VOPNAME_VNEVENT "vnevent"
1232 1178 #define VOPNAME_REQZCBUF "reqzcbuf"
1233 1179 #define VOPNAME_RETZCBUF "retzcbuf"
1234 1180
1235 1181 /*
1236 1182 * Flags for VOP_LOOKUP
1237 1183 *
1238 1184 * Defined in file.h, but also possible, FIGNORECASE and FSEARCH
1239 1185 *
1240 1186 */
1241 1187 #define LOOKUP_DIR 0x01 /* want parent dir vp */
1242 1188 #define LOOKUP_XATTR 0x02 /* lookup up extended attr dir */
1243 1189 #define CREATE_XATTR_DIR 0x04 /* Create extended attr dir */
1244 1190 #define LOOKUP_HAVE_SYSATTR_DIR 0x08 /* Already created virtual GFS dir */
1245 1191
1246 1192 /*
1247 1193 * Flags for VOP_READDIR
1248 1194 */
1249 1195 #define V_RDDIR_ENTFLAGS 0x01 /* request dirent flags */
1250 1196 #define V_RDDIR_ACCFILTER 0x02 /* filter out inaccessible dirents */
1251 1197
1252 1198 /*
1253 1199 * Flags for VOP_RWLOCK/VOP_RWUNLOCK
1254 1200 * VOP_RWLOCK will return the flag that was actually set, or -1 if none.
1255 1201 */
1256 1202 #define V_WRITELOCK_TRUE (1) /* Request write-lock on the vnode */
1257 1203 #define V_WRITELOCK_FALSE (0) /* Request read-lock on the vnode */
1258 1204
1259 1205 /*
1260 1206 * Flags for VOP_DUMPCTL
1261 1207 */
1262 1208 #define DUMP_ALLOC 0
1263 1209 #define DUMP_FREE 1
1264 1210 #define DUMP_SCAN 2
1265 1211
1266 1212 /*
1267 1213 * Public vnode manipulation functions.
1268 1214 */
1269 1215 #ifdef _KERNEL
1270 1216
1271 1217 vnode_t *vn_alloc(int);
1272 1218 void vn_reinit(vnode_t *);
1273 1219 void vn_recycle(vnode_t *);
1274 1220 void vn_free(vnode_t *);
1275 1221
1276 1222 int vn_is_readonly(vnode_t *);
1277 1223 int vn_is_opened(vnode_t *, v_mode_t);
1278 1224 int vn_is_mapped(vnode_t *, v_mode_t);
1279 1225 int vn_has_other_opens(vnode_t *, v_mode_t);
1280 1226 void vn_open_upgrade(vnode_t *, int);
1281 1227 void vn_open_downgrade(vnode_t *, int);
1282 1228
1283 1229 int vn_can_change_zones(vnode_t *vp);
1284 1230
1285 1231 int vn_has_flocks(vnode_t *);
1286 1232 int vn_has_mandatory_locks(vnode_t *, int);
1287 1233 int vn_has_cached_data(vnode_t *);
1288 1234
1289 1235 void vn_setops(vnode_t *, vnodeops_t *);
1290 1236 vnodeops_t *vn_getops(vnode_t *);
1291 1237 int vn_matchops(vnode_t *, vnodeops_t *);
1292 1238 int vn_matchopval(vnode_t *, char *, fs_generic_func_p);
1293 1239 int vn_ismntpt(vnode_t *);
1294 1240
1295 1241 struct vfs *vn_mountedvfs(vnode_t *);
1296 1242
1297 1243 int vn_in_dnlc(vnode_t *);
1298 1244
1299 1245 void vn_create_cache(void);
1300 1246 void vn_destroy_cache(void);
1301 1247
1302 1248 void vn_freevnodeops(vnodeops_t *);
1303 1249
1304 1250 int vn_open(char *pnamep, enum uio_seg seg, int filemode, int createmode,
1305 1251 struct vnode **vpp, enum create crwhy, mode_t umask);
1306 1252 int vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode,
1307 1253 struct vnode **vpp, enum create crwhy,
1308 1254 mode_t umask, struct vnode *startvp, int fd);
1309 1255 int vn_create(char *pnamep, enum uio_seg seg, struct vattr *vap,
1310 1256 enum vcexcl excl, int mode, struct vnode **vpp,
1311 1257 enum create why, int flag, mode_t umask);
1312 1258 int vn_createat(char *pnamep, enum uio_seg seg, struct vattr *vap,
1313 1259 enum vcexcl excl, int mode, struct vnode **vpp,
1314 1260 enum create why, int flag, mode_t umask, struct vnode *startvp);
1315 1261 int vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base, ssize_t len,
1316 1262 offset_t offset, enum uio_seg seg, int ioflag, rlim64_t ulimit,
1317 1263 cred_t *cr, ssize_t *residp);
1318 1264 void vn_rele(struct vnode *vp);
1319 1265 void vn_rele_async(struct vnode *vp, struct taskq *taskq);
1320 1266 void vn_rele_dnlc(struct vnode *vp);
1321 1267 void vn_rele_stream(struct vnode *vp);
1322 1268 int vn_link(char *from, char *to, enum uio_seg seg);
1323 1269 int vn_linkat(vnode_t *fstartvp, char *from, enum symfollow follow,
1324 1270 vnode_t *tstartvp, char *to, enum uio_seg seg);
1325 1271 int vn_rename(char *from, char *to, enum uio_seg seg);
1326 1272 int vn_renameat(vnode_t *fdvp, char *fname, vnode_t *tdvp, char *tname,
1327 1273 enum uio_seg seg);
1328 1274 int vn_remove(char *fnamep, enum uio_seg seg, enum rm dirflag);
1329 1275 int vn_removeat(vnode_t *startvp, char *fnamep, enum uio_seg seg,
1330 1276 enum rm dirflag);
1331 1277 int vn_compare(vnode_t *vp1, vnode_t *vp2);
1332 1278 int vn_vfswlock(struct vnode *vp);
1333 1279 int vn_vfswlock_wait(struct vnode *vp);
1334 1280 int vn_vfsrlock(struct vnode *vp);
1335 1281 int vn_vfsrlock_wait(struct vnode *vp);
1336 1282 void vn_vfsunlock(struct vnode *vp);
1337 1283 int vn_vfswlock_held(struct vnode *vp);
1338 1284 vnode_t *specvp(struct vnode *vp, dev_t dev, vtype_t type, struct cred *cr);
1339 1285 vnode_t *makespecvp(dev_t dev, vtype_t type);
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1340 1286 vn_vfslocks_entry_t *vn_vfslocks_getlock(void *);
1341 1287 void vn_vfslocks_rele(vn_vfslocks_entry_t *);
1342 1288 boolean_t vn_is_reparse(vnode_t *, cred_t *, caller_context_t *);
1343 1289
1344 1290 void vn_copypath(struct vnode *src, struct vnode *dst);
1345 1291 void vn_setpath_str(struct vnode *vp, const char *str, size_t len);
1346 1292 void vn_setpath(vnode_t *rootvp, struct vnode *startvp, struct vnode *vp,
1347 1293 const char *path, size_t plen);
1348 1294 void vn_renamepath(vnode_t *dvp, vnode_t *vp, const char *nm, size_t len);
1349 1295
1350 -/* Private vnode manipulation functions */
1351 -void vn_clearpath(vnode_t *, hrtime_t);
1352 -void vn_updatepath(vnode_t *, vnode_t *, const char *);
1353 -
1354 -
1355 1296 /* Vnode event notification */
1356 1297 void vnevent_rename_src(vnode_t *, vnode_t *, char *, caller_context_t *);
1357 1298 void vnevent_rename_dest(vnode_t *, vnode_t *, char *, caller_context_t *);
1358 1299 void vnevent_remove(vnode_t *, vnode_t *, char *, caller_context_t *);
1359 1300 void vnevent_rmdir(vnode_t *, vnode_t *, char *, caller_context_t *);
1360 1301 void vnevent_create(vnode_t *, caller_context_t *);
1361 1302 void vnevent_link(vnode_t *, caller_context_t *);
1362 1303 void vnevent_rename_dest_dir(vnode_t *, vnode_t *, char *,
1363 1304 caller_context_t *ct);
1364 1305 void vnevent_mountedover(vnode_t *, caller_context_t *);
1365 1306 void vnevent_truncate(vnode_t *, caller_context_t *);
1366 1307 int vnevent_support(vnode_t *, caller_context_t *);
1367 1308 void vnevent_pre_rename_src(vnode_t *, vnode_t *, char *,
1368 1309 caller_context_t *);
1369 1310 void vnevent_pre_rename_dest(vnode_t *, vnode_t *, char *,
1370 1311 caller_context_t *);
1371 1312 void vnevent_pre_rename_dest_dir(vnode_t *, vnode_t *, char *,
1372 1313 caller_context_t *);
1373 1314 void vnevent_resize(vnode_t *, caller_context_t *);
1374 1315
1375 1316 /* Vnode specific data */
1376 1317 void vsd_create(uint_t *, void (*)(void *));
1377 1318 void vsd_destroy(uint_t *);
1378 1319 void *vsd_get(vnode_t *, uint_t);
1379 1320 int vsd_set(vnode_t *, uint_t, void *);
1380 1321 void vsd_free(vnode_t *);
1381 1322
1382 1323 /*
1383 1324 * Extensible vnode attribute (xva) routines:
1384 1325 * xva_init() initializes an xvattr_t (zero struct, init mapsize, set AT_XATTR)
1385 1326 * xva_getxoptattr() returns a ponter to the xoptattr_t section of xvattr_t
1386 1327 */
1387 1328 void xva_init(xvattr_t *);
1388 1329 xoptattr_t *xva_getxoptattr(xvattr_t *); /* Get ptr to xoptattr_t */
1389 1330
1390 1331 void xattr_init(void); /* Initialize vnodeops for xattrs */
1391 1332
1392 1333 /* GFS tunnel for xattrs */
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1393 1334 int xattr_dir_lookup(vnode_t *, vnode_t **, int, cred_t *);
1394 1335
1395 1336 /* Reparse Point */
1396 1337 void reparse_point_init(void);
1397 1338
1398 1339 /* Context identification */
1399 1340 u_longlong_t fs_new_caller_id();
1400 1341
1401 1342 int vn_vmpss_usepageio(vnode_t *);
1402 1343
1403 -/* Empty v_path placeholder */
1404 -extern char *vn_vpath_empty;
1405 -
1406 1344 /*
1407 1345 * Needed for use of IS_VMODSORT() in kernel.
1408 1346 */
1409 1347 extern uint_t pvn_vmodsort_supported;
1410 1348
1411 1349 #define VN_HOLD(vp) { \
1412 1350 mutex_enter(&(vp)->v_lock); \
1413 1351 (vp)->v_count++; \
1414 1352 mutex_exit(&(vp)->v_lock); \
1415 1353 }
1416 1354
1417 1355 #define VN_RELE(vp) { \
1418 1356 vn_rele(vp); \
1419 1357 }
1420 1358
1421 1359 #define VN_RELE_ASYNC(vp, taskq) { \
1422 1360 vn_rele_async(vp, taskq); \
1423 1361 }
1424 1362
1425 1363 #define VN_SET_VFS_TYPE_DEV(vp, vfsp, type, dev) { \
1426 1364 (vp)->v_vfsp = (vfsp); \
1427 1365 (vp)->v_type = (type); \
1428 1366 (vp)->v_rdev = (dev); \
1429 1367 }
1430 1368
1431 1369 /*
1432 1370 * Compare two vnodes for equality. In general this macro should be used
1433 1371 * in preference to calling VOP_CMP directly.
1434 1372 */
1435 1373 #define VN_CMP(VP1, VP2) ((VP1) == (VP2) ? 1 : \
1436 1374 ((VP1) && (VP2) && (vn_getops(VP1) == vn_getops(VP2)) ? \
1437 1375 VOP_CMP(VP1, VP2, NULL) : 0))
1438 1376
1439 1377 /*
1440 1378 * Some well-known global vnodes used by the VM system to name pages.
1441 1379 */
1442 1380 extern struct vnode kvps[];
1443 1381
1444 1382 typedef enum {
1445 1383 KV_KVP, /* vnode for all segkmem pages */
1446 1384 KV_ZVP, /* vnode for all ZFS pages */
1447 1385 #if defined(__sparc)
1448 1386 KV_MPVP, /* vnode for all page_t meta-pages */
1449 1387 KV_PROMVP, /* vnode for all PROM pages */
1450 1388 #endif /* __sparc */
1451 1389 KV_MAX /* total number of vnodes in kvps[] */
1452 1390 } kvps_index_t;
1453 1391
1454 1392 #define VN_ISKAS(vp) ((vp) >= &kvps[0] && (vp) < &kvps[KV_MAX])
1455 1393
1456 1394 #endif /* _KERNEL */
1457 1395
1458 1396 /*
1459 1397 * Flags to VOP_SETATTR/VOP_GETATTR.
1460 1398 */
1461 1399 #define ATTR_UTIME 0x01 /* non-default utime(2) request */
1462 1400 #define ATTR_EXEC 0x02 /* invocation from exec(2) */
1463 1401 #define ATTR_COMM 0x04 /* yield common vp attributes */
1464 1402 #define ATTR_HINT 0x08 /* information returned will be `hint' */
1465 1403 #define ATTR_REAL 0x10 /* yield attributes of the real vp */
1466 1404 #define ATTR_NOACLCHECK 0x20 /* Don't check ACL when checking permissions */
1467 1405 #define ATTR_TRIGGER 0x40 /* Mount first if vnode is a trigger mount */
1468 1406 /*
1469 1407 * Generally useful macros.
1470 1408 */
1471 1409 #define VBSIZE(vp) ((vp)->v_vfsp->vfs_bsize)
1472 1410
1473 1411 #define VTOZONE(vp) ((vp)->v_vfsp->vfs_zone)
1474 1412
1475 1413 #define NULLVP ((struct vnode *)0)
1476 1414 #define NULLVPP ((struct vnode **)0)
1477 1415
1478 1416 #ifdef _KERNEL
1479 1417
1480 1418 /*
1481 1419 * Structure used while handling asynchronous VOP_PUTPAGE operations.
1482 1420 */
1483 1421 struct async_reqs {
1484 1422 struct async_reqs *a_next; /* pointer to next arg struct */
1485 1423 struct vnode *a_vp; /* vnode pointer */
1486 1424 u_offset_t a_off; /* offset in file */
1487 1425 uint_t a_len; /* size of i/o request */
1488 1426 int a_flags; /* flags to indicate operation type */
1489 1427 struct cred *a_cred; /* cred pointer */
1490 1428 ushort_t a_prealloced; /* set if struct is pre-allocated */
1491 1429 };
1492 1430
1493 1431 /*
1494 1432 * VN_DISPOSE() -- given a page pointer, safely invoke VOP_DISPOSE().
1495 1433 * Note that there is no guarantee that the page passed in will be
1496 1434 * freed. If that is required, then a check after calling VN_DISPOSE would
1497 1435 * be necessary to ensure the page was freed.
1498 1436 */
1499 1437 #define VN_DISPOSE(pp, flag, dn, cr) { \
1500 1438 if ((pp)->p_vnode != NULL && !VN_ISKAS((pp)->p_vnode)) \
1501 1439 VOP_DISPOSE((pp)->p_vnode, (pp), (flag), (dn), (cr), NULL); \
1502 1440 else if ((flag) == B_FREE) \
1503 1441 page_free((pp), (dn)); \
1504 1442 else \
1505 1443 page_destroy((pp), (dn)); \
1506 1444 }
1507 1445
1508 1446 #endif /* _KERNEL */
1509 1447
1510 1448 #ifdef __cplusplus
1511 1449 }
1512 1450 #endif
1513 1451
1514 1452 #endif /* _SYS_VNODE_H */
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