1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 25 * Copyright (c) 2011, 2017 by Delphix. All rights reserved. 26 */ 27 28 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 29 /* All Rights Reserved */ 30 31 /* 32 * University Copyright- Copyright (c) 1982, 1986, 1988 33 * The Regents of the University of California 34 * All Rights Reserved 35 * 36 * University Acknowledgment- Portions of this document are derived from 37 * software developed by the University of California, Berkeley, and its 38 * contributors. 39 */ 40 41 #ifndef _SYS_VNODE_H 42 #define _SYS_VNODE_H 43 44 #include <sys/types.h> 45 #include <sys/t_lock.h> 46 #include <sys/rwstlock.h> 47 #include <sys/time_impl.h> 48 #include <sys/cred.h> 49 #include <sys/uio.h> 50 #include <sys/resource.h> 51 #include <vm/seg_enum.h> 52 #include <sys/kstat.h> 53 #include <sys/kmem.h> 54 #include <sys/list.h> 55 #ifdef _KERNEL 56 #include <sys/buf.h> 57 #include <sys/sdt.h> 58 #endif /* _KERNEL */ 59 60 #ifdef __cplusplus 61 extern "C" { 62 #endif 63 64 /* 65 * Statistics for all vnode operations. 66 * All operations record number of ops (since boot/mount/zero'ed). 67 * Certain I/O operations (read, write, readdir) also record number 68 * of bytes transferred. 69 * This appears in two places in the system: one is embedded in each 70 * vfs_t. There is also an array of vopstats_t structures allocated 71 * on a per-fstype basis. 72 */ 73 74 #define VOPSTATS_STR "vopstats_" /* Initial string for vopstat kstats */ 75 76 typedef struct vopstats { 77 kstat_named_t nopen; /* VOP_OPEN */ 78 kstat_named_t nclose; /* VOP_CLOSE */ 79 kstat_named_t nread; /* VOP_READ */ 80 kstat_named_t read_bytes; 81 kstat_named_t nwrite; /* VOP_WRITE */ 82 kstat_named_t write_bytes; 83 kstat_named_t nioctl; /* VOP_IOCTL */ 84 kstat_named_t nsetfl; /* VOP_SETFL */ 85 kstat_named_t ngetattr; /* VOP_GETATTR */ 86 kstat_named_t nsetattr; /* VOP_SETATTR */ 87 kstat_named_t naccess; /* VOP_ACCESS */ 88 kstat_named_t nlookup; /* VOP_LOOKUP */ 89 kstat_named_t ncreate; /* VOP_CREATE */ 90 kstat_named_t nremove; /* VOP_REMOVE */ 91 kstat_named_t nlink; /* VOP_LINK */ 92 kstat_named_t nrename; /* VOP_RENAME */ 93 kstat_named_t nmkdir; /* VOP_MKDIR */ 94 kstat_named_t nrmdir; /* VOP_RMDIR */ 95 kstat_named_t nreaddir; /* VOP_READDIR */ 96 kstat_named_t readdir_bytes; 97 kstat_named_t nsymlink; /* VOP_SYMLINK */ 98 kstat_named_t nreadlink; /* VOP_READLINK */ 99 kstat_named_t nfsync; /* VOP_FSYNC */ 100 kstat_named_t ninactive; /* VOP_INACTIVE */ 101 kstat_named_t nfid; /* VOP_FID */ 102 kstat_named_t nrwlock; /* VOP_RWLOCK */ 103 kstat_named_t nrwunlock; /* VOP_RWUNLOCK */ 104 kstat_named_t nseek; /* VOP_SEEK */ 105 kstat_named_t ncmp; /* VOP_CMP */ 106 kstat_named_t nfrlock; /* VOP_FRLOCK */ 107 kstat_named_t nspace; /* VOP_SPACE */ 108 kstat_named_t nrealvp; /* VOP_REALVP */ 109 kstat_named_t ngetpage; /* VOP_GETPAGE */ 110 kstat_named_t nputpage; /* VOP_PUTPAGE */ 111 kstat_named_t nmap; /* VOP_MAP */ 112 kstat_named_t naddmap; /* VOP_ADDMAP */ 113 kstat_named_t ndelmap; /* VOP_DELMAP */ 114 kstat_named_t npoll; /* VOP_POLL */ 115 kstat_named_t ndump; /* VOP_DUMP */ 116 kstat_named_t npathconf; /* VOP_PATHCONF */ 117 kstat_named_t npageio; /* VOP_PAGEIO */ 118 kstat_named_t ndumpctl; /* VOP_DUMPCTL */ 119 kstat_named_t ndispose; /* VOP_DISPOSE */ 120 kstat_named_t nsetsecattr; /* VOP_SETSECATTR */ 121 kstat_named_t ngetsecattr; /* VOP_GETSECATTR */ 122 kstat_named_t nshrlock; /* VOP_SHRLOCK */ 123 kstat_named_t nvnevent; /* VOP_VNEVENT */ 124 kstat_named_t nreqzcbuf; /* VOP_REQZCBUF */ 125 kstat_named_t nretzcbuf; /* VOP_RETZCBUF */ 126 } vopstats_t; 127 128 /* 129 * The vnode is the focus of all file activity in UNIX. 130 * A vnode is allocated for each active file, each current 131 * directory, each mounted-on file, and the root. 132 * 133 * Each vnode is usually associated with a file-system-specific node (for 134 * UFS, this is the in-memory inode). Generally, a vnode and an fs-node 135 * should be created and destroyed together as a pair. 136 * 137 * If a vnode is reused for a new file, it should be reinitialized by calling 138 * either vn_reinit() or vn_recycle(). 139 * 140 * vn_reinit() resets the entire vnode as if it was returned by vn_alloc(). 141 * The caller is responsible for setting up the entire vnode after calling 142 * vn_reinit(). This is important when using kmem caching where the vnode is 143 * allocated by a constructor, for instance. 144 * 145 * vn_recycle() is used when the file system keeps some state around in both 146 * the vnode and the associated FS-node. In UFS, for example, the inode of 147 * a deleted file can be reused immediately. The v_data, v_vfsp, v_op, etc. 148 * remains the same but certain fields related to the previous instance need 149 * to be reset. In particular: 150 * v_femhead 151 * v_path 152 * v_rdcnt, v_wrcnt 153 * v_mmap_read, v_mmap_write 154 */ 155 156 /* 157 * vnode types. VNON means no type. These values are unrelated to 158 * values in on-disk inodes. 159 */ 160 typedef enum vtype { 161 VNON = 0, 162 VREG = 1, 163 VDIR = 2, 164 VBLK = 3, 165 VCHR = 4, 166 VLNK = 5, 167 VFIFO = 6, 168 VDOOR = 7, 169 VPROC = 8, 170 VSOCK = 9, 171 VPORT = 10, 172 VBAD = 11 173 } vtype_t; 174 175 /* 176 * VSD - Vnode Specific Data 177 * Used to associate additional private data with a vnode. 178 */ 179 struct vsd_node { 180 list_node_t vs_nodes; /* list of all VSD nodes */ 181 uint_t vs_nkeys; /* entries in value array */ 182 void **vs_value; /* array of value/key */ 183 }; 184 185 /* 186 * Many of the fields in the vnode are read-only once they are initialized 187 * at vnode creation time. Other fields are protected by locks. 188 * 189 * IMPORTANT: vnodes should be created ONLY by calls to vn_alloc(). They 190 * may not be embedded into the file-system specific node (inode). The 191 * size of vnodes may change. 192 * 193 * The v_lock protects: 194 * v_flag 195 * v_stream 196 * v_count 197 * v_shrlocks 198 * v_path 199 * v_vsd 200 * v_xattrdir 201 * 202 * A special lock (implemented by vn_vfswlock in vnode.c) protects: 203 * v_vfsmountedhere 204 * 205 * The global flock_lock mutex (in flock.c) protects: 206 * v_filocks 207 * 208 * IMPORTANT NOTE: 209 * 210 * The following vnode fields are considered public and may safely be 211 * accessed by file systems or other consumers: 212 * 213 * v_lock 214 * v_flag 215 * v_count 216 * v_data 217 * v_vfsp 218 * v_stream 219 * v_type 220 * v_rdev 221 * 222 * ALL OTHER FIELDS SHOULD BE ACCESSED ONLY BY THE OWNER OF THAT FIELD. 223 * In particular, file systems should not access other fields; they may 224 * change or even be removed. The functionality which was once provided 225 * by these fields is available through vn_* functions. 226 */ 227 228 struct fem_head; /* from fem.h */ 229 230 typedef struct vnode { 231 kmutex_t v_lock; /* protects vnode fields */ 232 uint_t v_flag; /* vnode flags (see below) */ 233 uint_t v_count; /* reference count */ 234 void *v_data; /* private data for fs */ 235 struct vfs *v_vfsp; /* ptr to containing VFS */ 236 struct stdata *v_stream; /* associated stream */ 237 enum vtype v_type; /* vnode type */ 238 dev_t v_rdev; /* device (VCHR, VBLK) */ 239 240 /* PRIVATE FIELDS BELOW - DO NOT USE */ 241 242 struct vfs *v_vfsmountedhere; /* ptr to vfs mounted here */ 243 struct vnodeops *v_op; /* vnode operations */ 244 struct page *v_pages; /* vnode pages list */ 245 struct filock *v_filocks; /* ptr to filock list */ 246 struct shrlocklist *v_shrlocks; /* ptr to shrlock list */ 247 krwlock_t v_nbllock; /* sync for NBMAND locks */ 248 kcondvar_t v_cv; /* synchronize locking */ 249 void *v_locality; /* hook for locality info */ 250 struct fem_head *v_femhead; /* fs monitoring */ 251 char *v_path; /* cached path */ 252 uint_t v_rdcnt; /* open for read count (VREG only) */ 253 uint_t v_wrcnt; /* open for write count (VREG only) */ 254 u_longlong_t v_mmap_read; /* mmap read count */ 255 u_longlong_t v_mmap_write; /* mmap write count */ 256 void *v_mpssdata; /* info for large page mappings */ 257 void *v_fopdata; /* list of file ops event watches */ 258 kmutex_t v_vsd_lock; /* protects v_vsd field */ 259 struct vsd_node *v_vsd; /* vnode specific data */ 260 struct vnode *v_xattrdir; /* unnamed extended attr dir (GFS) */ 261 uint_t v_count_dnlc; /* dnlc reference count */ 262 } vnode_t; 263 264 #define IS_DEVVP(vp) \ 265 ((vp)->v_type == VCHR || (vp)->v_type == VBLK || (vp)->v_type == VFIFO) 266 267 #define VNODE_ALIGN 64 268 /* Count of low-order 0 bits in a vnode *, based on size and alignment. */ 269 #if defined(_LP64) 270 #define VNODE_ALIGN_LOG2 8 271 #else 272 #define VNODE_ALIGN_LOG2 7 273 #endif 274 275 /* 276 * vnode flags. 277 */ 278 #define VROOT 0x01 /* root of its file system */ 279 #define VNOCACHE 0x02 /* don't keep cache pages on vnode */ 280 #define VNOMAP 0x04 /* file cannot be mapped/faulted */ 281 #define VDUP 0x08 /* file should be dup'ed rather then opened */ 282 #define VNOSWAP 0x10 /* file cannot be used as virtual swap device */ 283 #define VNOMOUNT 0x20 /* file cannot be covered by mount */ 284 #define VISSWAP 0x40 /* vnode is being used for swap */ 285 #define VSWAPLIKE 0x80 /* vnode acts like swap (but may not be) */ 286 287 #define IS_SWAPVP(vp) (((vp)->v_flag & (VISSWAP | VSWAPLIKE)) != 0) 288 289 typedef struct vn_vfslocks_entry { 290 rwstlock_t ve_lock; 291 void *ve_vpvfs; 292 struct vn_vfslocks_entry *ve_next; 293 uint32_t ve_refcnt; 294 char pad[64 - sizeof (rwstlock_t) - 2 * sizeof (void *) - \ 295 sizeof (uint32_t)]; 296 } vn_vfslocks_entry_t; 297 298 /* 299 * The following two flags are used to lock the v_vfsmountedhere field 300 */ 301 #define VVFSLOCK 0x100 302 #define VVFSWAIT 0x200 303 304 /* 305 * Used to serialize VM operations on a vnode 306 */ 307 #define VVMLOCK 0x400 308 309 /* 310 * Tell vn_open() not to fail a directory open for writing but 311 * to go ahead and call VOP_OPEN() to let the filesystem check. 312 */ 313 #define VDIROPEN 0x800 314 315 /* 316 * Flag to let the VM system know that this file is most likely a binary 317 * or shared library since it has been mmap()ed EXEC at some time. 318 */ 319 #define VVMEXEC 0x1000 320 321 #define VPXFS 0x2000 /* clustering: global fs proxy vnode */ 322 323 #define IS_PXFSVP(vp) ((vp)->v_flag & VPXFS) 324 325 #define V_XATTRDIR 0x4000 /* attribute unnamed directory */ 326 327 #define IS_XATTRDIR(vp) ((vp)->v_flag & V_XATTRDIR) 328 329 #define V_LOCALITY 0x8000 /* whether locality aware */ 330 331 /* 332 * Flag that indicates the VM should maintain the v_pages list with all modified 333 * pages on one end and unmodified pages at the other. This makes finding dirty 334 * pages to write back to disk much faster at the expense of taking a minor 335 * fault on the first store instruction which touches a writable page. 336 */ 337 #define VMODSORT (0x10000) 338 #define IS_VMODSORT(vp) \ 339 (pvn_vmodsort_supported != 0 && ((vp)->v_flag & VMODSORT) != 0) 340 341 #define VISSWAPFS 0x20000 /* vnode is being used for swapfs */ 342 343 /* 344 * The mdb memstat command assumes that IS_SWAPFSVP only uses the 345 * vnode's v_flag field. If this changes, cache the additional 346 * fields in mdb; see vn_get in mdb/common/modules/genunix/memory.c 347 */ 348 #define IS_SWAPFSVP(vp) (((vp)->v_flag & VISSWAPFS) != 0) 349 350 #define V_SYSATTR 0x40000 /* vnode is a GFS system attribute */ 351 352 /* 353 * Vnode attributes. A bit-mask is supplied as part of the 354 * structure to indicate the attributes the caller wants to 355 * set (setattr) or extract (getattr). 356 */ 357 358 /* 359 * Note that va_nodeid and va_nblocks are 64bit data type. 360 * We support large files over NFSV3. With Solaris client and 361 * Server that generates 64bit ino's and sizes these fields 362 * will overflow if they are 32 bit sizes. 363 */ 364 365 typedef struct vattr { 366 uint_t va_mask; /* bit-mask of attributes */ 367 vtype_t va_type; /* vnode type (for create) */ 368 mode_t va_mode; /* file access mode */ 369 uid_t va_uid; /* owner user id */ 370 gid_t va_gid; /* owner group id */ 371 dev_t va_fsid; /* file system id (dev for now) */ 372 u_longlong_t va_nodeid; /* node id */ 373 nlink_t va_nlink; /* number of references to file */ 374 u_offset_t va_size; /* file size in bytes */ 375 timestruc_t va_atime; /* time of last access */ 376 timestruc_t va_mtime; /* time of last modification */ 377 timestruc_t va_ctime; /* time of last status change */ 378 dev_t va_rdev; /* device the file represents */ 379 uint_t va_blksize; /* fundamental block size */ 380 u_longlong_t va_nblocks; /* # of blocks allocated */ 381 uint_t va_seq; /* sequence number */ 382 } vattr_t; 383 384 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 385 386 /* 387 * Structure of all optional attributes. 388 */ 389 typedef struct xoptattr { 390 timestruc_t xoa_createtime; /* Create time of file */ 391 uint8_t xoa_archive; 392 uint8_t xoa_system; 393 uint8_t xoa_readonly; 394 uint8_t xoa_hidden; 395 uint8_t xoa_nounlink; 396 uint8_t xoa_immutable; 397 uint8_t xoa_appendonly; 398 uint8_t xoa_nodump; 399 uint8_t xoa_opaque; 400 uint8_t xoa_av_quarantined; 401 uint8_t xoa_av_modified; 402 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 403 uint8_t xoa_reparse; 404 uint64_t xoa_generation; 405 uint8_t xoa_offline; 406 uint8_t xoa_sparse; 407 } xoptattr_t; 408 409 /* 410 * The xvattr structure is really a variable length structure that 411 * is made up of: 412 * - The classic vattr_t (xva_vattr) 413 * - a 32 bit quantity (xva_mapsize) that specifies the size of the 414 * attribute bitmaps in 32 bit words. 415 * - A pointer to the returned attribute bitmap (needed because the 416 * previous element, the requested attribute bitmap) is variable lenth. 417 * - The requested attribute bitmap, which is an array of 32 bit words. 418 * Callers use the XVA_SET_REQ() macro to set the bits corresponding to 419 * the attributes that are being requested. 420 * - The returned attribute bitmap, which is an array of 32 bit words. 421 * File systems that support optional attributes use the XVA_SET_RTN() 422 * macro to set the bits corresponding to the attributes that are being 423 * returned. 424 * - The xoptattr_t structure which contains the attribute values 425 * 426 * xva_mapsize determines how many words in the attribute bitmaps. 427 * Immediately following the attribute bitmaps is the xoptattr_t. 428 * xva_getxoptattr() is used to get the pointer to the xoptattr_t 429 * section. 430 */ 431 432 #define XVA_MAPSIZE 3 /* Size of attr bitmaps */ 433 #define XVA_MAGIC 0x78766174 /* Magic # for verification */ 434 435 /* 436 * The xvattr structure is an extensible structure which permits optional 437 * attributes to be requested/returned. File systems may or may not support 438 * optional attributes. They do so at their own discretion but if they do 439 * support optional attributes, they must register the VFSFT_XVATTR feature 440 * so that the optional attributes can be set/retrived. 441 * 442 * The fields of the xvattr structure are: 443 * 444 * xva_vattr - The first element of an xvattr is a legacy vattr structure 445 * which includes the common attributes. If AT_XVATTR is set in the va_mask 446 * then the entire structure is treated as an xvattr. If AT_XVATTR is not 447 * set, then only the xva_vattr structure can be used. 448 * 449 * xva_magic - 0x78766174 (hex for "xvat"). Magic number for verification. 450 * 451 * xva_mapsize - Size of requested and returned attribute bitmaps. 452 * 453 * xva_rtnattrmapp - Pointer to xva_rtnattrmap[]. We need this since the 454 * size of the array before it, xva_reqattrmap[], could change which means 455 * the location of xva_rtnattrmap[] could change. This will allow unbundled 456 * file systems to find the location of xva_rtnattrmap[] when the sizes change. 457 * 458 * xva_reqattrmap[] - Array of requested attributes. Attributes are 459 * represented by a specific bit in a specific element of the attribute 460 * map array. Callers set the bits corresponding to the attributes 461 * that the caller wants to get/set. 462 * 463 * xva_rtnattrmap[] - Array of attributes that the file system was able to 464 * process. Not all file systems support all optional attributes. This map 465 * informs the caller which attributes the underlying file system was able 466 * to set/get. (Same structure as the requested attributes array in terms 467 * of each attribute corresponding to specific bits and array elements.) 468 * 469 * xva_xoptattrs - Structure containing values of optional attributes. 470 * These values are only valid if the corresponding bits in xva_reqattrmap 471 * are set and the underlying file system supports those attributes. 472 */ 473 typedef struct xvattr { 474 vattr_t xva_vattr; /* Embedded vattr structure */ 475 uint32_t xva_magic; /* Magic Number */ 476 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 477 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 478 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 479 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 480 xoptattr_t xva_xoptattrs; /* Optional attributes */ 481 } xvattr_t; 482 483 #ifdef _SYSCALL32 484 /* 485 * For bigtypes time_t changed to 64 bit on the 64-bit kernel. 486 * Define an old version for user/kernel interface 487 */ 488 489 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 490 #pragma pack(4) 491 #endif 492 493 typedef struct vattr32 { 494 uint32_t va_mask; /* bit-mask of attributes */ 495 vtype_t va_type; /* vnode type (for create) */ 496 mode32_t va_mode; /* file access mode */ 497 uid32_t va_uid; /* owner user id */ 498 gid32_t va_gid; /* owner group id */ 499 dev32_t va_fsid; /* file system id (dev for now) */ 500 u_longlong_t va_nodeid; /* node id */ 501 nlink_t va_nlink; /* number of references to file */ 502 u_offset_t va_size; /* file size in bytes */ 503 timestruc32_t va_atime; /* time of last access */ 504 timestruc32_t va_mtime; /* time of last modification */ 505 timestruc32_t va_ctime; /* time of last status change */ 506 dev32_t va_rdev; /* device the file represents */ 507 uint32_t va_blksize; /* fundamental block size */ 508 u_longlong_t va_nblocks; /* # of blocks allocated */ 509 uint32_t va_seq; /* sequence number */ 510 } vattr32_t; 511 512 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 513 #pragma pack() 514 #endif 515 516 #else /* not _SYSCALL32 */ 517 #define vattr32 vattr 518 typedef vattr_t vattr32_t; 519 #endif /* _SYSCALL32 */ 520 521 /* 522 * Attributes of interest to the caller of setattr or getattr. 523 */ 524 #define AT_TYPE 0x00001 525 #define AT_MODE 0x00002 526 #define AT_UID 0x00004 527 #define AT_GID 0x00008 528 #define AT_FSID 0x00010 529 #define AT_NODEID 0x00020 530 #define AT_NLINK 0x00040 531 #define AT_SIZE 0x00080 532 #define AT_ATIME 0x00100 533 #define AT_MTIME 0x00200 534 #define AT_CTIME 0x00400 535 #define AT_RDEV 0x00800 536 #define AT_BLKSIZE 0x01000 537 #define AT_NBLOCKS 0x02000 538 /* 0x04000 */ /* unused */ 539 #define AT_SEQ 0x08000 540 /* 541 * If AT_XVATTR is set then there are additional bits to process in 542 * the xvattr_t's attribute bitmap. If this is not set then the bitmap 543 * MUST be ignored. Note that this bit must be set/cleared explicitly. 544 * That is, setting AT_ALL will NOT set AT_XVATTR. 545 */ 546 #define AT_XVATTR 0x10000 547 548 #define AT_ALL (AT_TYPE|AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|\ 549 AT_NLINK|AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|\ 550 AT_RDEV|AT_BLKSIZE|AT_NBLOCKS|AT_SEQ) 551 552 #define AT_STAT (AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|AT_NLINK|\ 553 AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|AT_RDEV|AT_TYPE) 554 555 #define AT_TIMES (AT_ATIME|AT_MTIME|AT_CTIME) 556 557 #define AT_NOSET (AT_NLINK|AT_RDEV|AT_FSID|AT_NODEID|AT_TYPE|\ 558 AT_BLKSIZE|AT_NBLOCKS|AT_SEQ) 559 560 /* 561 * Attribute bits used in the extensible attribute's (xva's) attribute 562 * bitmaps. Note that the bitmaps are made up of a variable length number 563 * of 32-bit words. The convention is to use XAT{n}_{attrname} where "n" 564 * is the element in the bitmap (starting at 1). This convention is for 565 * the convenience of the maintainer to keep track of which element each 566 * attribute belongs to. 567 * 568 * NOTE THAT CONSUMERS MUST *NOT* USE THE XATn_* DEFINES DIRECTLY. CONSUMERS 569 * MUST USE THE XAT_* DEFINES. 570 */ 571 #define XAT0_INDEX 0LL /* Index into bitmap for XAT0 attrs */ 572 #define XAT0_CREATETIME 0x00000001 /* Create time of file */ 573 #define XAT0_ARCHIVE 0x00000002 /* Archive */ 574 #define XAT0_SYSTEM 0x00000004 /* System */ 575 #define XAT0_READONLY 0x00000008 /* Readonly */ 576 #define XAT0_HIDDEN 0x00000010 /* Hidden */ 577 #define XAT0_NOUNLINK 0x00000020 /* Nounlink */ 578 #define XAT0_IMMUTABLE 0x00000040 /* immutable */ 579 #define XAT0_APPENDONLY 0x00000080 /* appendonly */ 580 #define XAT0_NODUMP 0x00000100 /* nodump */ 581 #define XAT0_OPAQUE 0x00000200 /* opaque */ 582 #define XAT0_AV_QUARANTINED 0x00000400 /* anti-virus quarantine */ 583 #define XAT0_AV_MODIFIED 0x00000800 /* anti-virus modified */ 584 #define XAT0_AV_SCANSTAMP 0x00001000 /* anti-virus scanstamp */ 585 #define XAT0_REPARSE 0x00002000 /* FS reparse point */ 586 #define XAT0_GEN 0x00004000 /* object generation number */ 587 #define XAT0_OFFLINE 0x00008000 /* offline */ 588 #define XAT0_SPARSE 0x00010000 /* sparse */ 589 590 #define XAT0_ALL_ATTRS (XAT0_CREATETIME|XAT0_ARCHIVE|XAT0_SYSTEM| \ 591 XAT0_READONLY|XAT0_HIDDEN|XAT0_NOUNLINK|XAT0_IMMUTABLE|XAT0_APPENDONLY| \ 592 XAT0_NODUMP|XAT0_OPAQUE|XAT0_AV_QUARANTINED| XAT0_AV_MODIFIED| \ 593 XAT0_AV_SCANSTAMP|XAT0_REPARSE|XATO_GEN|XAT0_OFFLINE|XAT0_SPARSE) 594 595 /* Support for XAT_* optional attributes */ 596 #define XVA_MASK 0xffffffff /* Used to mask off 32 bits */ 597 #define XVA_SHFT 32 /* Used to shift index */ 598 599 /* 600 * Used to pry out the index and attribute bits from the XAT_* attributes 601 * defined below. Note that we're masking things down to 32 bits then 602 * casting to uint32_t. 603 */ 604 #define XVA_INDEX(attr) ((uint32_t)(((attr) >> XVA_SHFT) & XVA_MASK)) 605 #define XVA_ATTRBIT(attr) ((uint32_t)((attr) & XVA_MASK)) 606 607 /* 608 * The following defines present a "flat namespace" so that consumers don't 609 * need to keep track of which element belongs to which bitmap entry. 610 * 611 * NOTE THAT THESE MUST NEVER BE OR-ed TOGETHER 612 */ 613 #define XAT_CREATETIME ((XAT0_INDEX << XVA_SHFT) | XAT0_CREATETIME) 614 #define XAT_ARCHIVE ((XAT0_INDEX << XVA_SHFT) | XAT0_ARCHIVE) 615 #define XAT_SYSTEM ((XAT0_INDEX << XVA_SHFT) | XAT0_SYSTEM) 616 #define XAT_READONLY ((XAT0_INDEX << XVA_SHFT) | XAT0_READONLY) 617 #define XAT_HIDDEN ((XAT0_INDEX << XVA_SHFT) | XAT0_HIDDEN) 618 #define XAT_NOUNLINK ((XAT0_INDEX << XVA_SHFT) | XAT0_NOUNLINK) 619 #define XAT_IMMUTABLE ((XAT0_INDEX << XVA_SHFT) | XAT0_IMMUTABLE) 620 #define XAT_APPENDONLY ((XAT0_INDEX << XVA_SHFT) | XAT0_APPENDONLY) 621 #define XAT_NODUMP ((XAT0_INDEX << XVA_SHFT) | XAT0_NODUMP) 622 #define XAT_OPAQUE ((XAT0_INDEX << XVA_SHFT) | XAT0_OPAQUE) 623 #define XAT_AV_QUARANTINED ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_QUARANTINED) 624 #define XAT_AV_MODIFIED ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_MODIFIED) 625 #define XAT_AV_SCANSTAMP ((XAT0_INDEX << XVA_SHFT) | XAT0_AV_SCANSTAMP) 626 #define XAT_REPARSE ((XAT0_INDEX << XVA_SHFT) | XAT0_REPARSE) 627 #define XAT_GEN ((XAT0_INDEX << XVA_SHFT) | XAT0_GEN) 628 #define XAT_OFFLINE ((XAT0_INDEX << XVA_SHFT) | XAT0_OFFLINE) 629 #define XAT_SPARSE ((XAT0_INDEX << XVA_SHFT) | XAT0_SPARSE) 630 631 /* 632 * The returned attribute map array (xva_rtnattrmap[]) is located past the 633 * requested attribute map array (xva_reqattrmap[]). Its location changes 634 * when the array sizes change. We use a separate pointer in a known location 635 * (xva_rtnattrmapp) to hold the location of xva_rtnattrmap[]. This is 636 * set in xva_init() 637 */ 638 #define XVA_RTNATTRMAP(xvap) ((xvap)->xva_rtnattrmapp) 639 640 /* 641 * XVA_SET_REQ() sets an attribute bit in the proper element in the bitmap 642 * of requested attributes (xva_reqattrmap[]). 643 */ 644 #define XVA_SET_REQ(xvap, attr) \ 645 ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR); \ 646 ASSERT((xvap)->xva_magic == XVA_MAGIC); \ 647 (xvap)->xva_reqattrmap[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr) 648 /* 649 * XVA_CLR_REQ() clears an attribute bit in the proper element in the bitmap 650 * of requested attributes (xva_reqattrmap[]). 651 */ 652 #define XVA_CLR_REQ(xvap, attr) \ 653 ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR); \ 654 ASSERT((xvap)->xva_magic == XVA_MAGIC); \ 655 (xvap)->xva_reqattrmap[XVA_INDEX(attr)] &= ~XVA_ATTRBIT(attr) 656 657 /* 658 * XVA_SET_RTN() sets an attribute bit in the proper element in the bitmap 659 * of returned attributes (xva_rtnattrmap[]). 660 */ 661 #define XVA_SET_RTN(xvap, attr) \ 662 ASSERT((xvap)->xva_vattr.va_mask | AT_XVATTR); \ 663 ASSERT((xvap)->xva_magic == XVA_MAGIC); \ 664 (XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] |= XVA_ATTRBIT(attr) 665 666 /* 667 * XVA_ISSET_REQ() checks the requested attribute bitmap (xva_reqattrmap[]) 668 * to see of the corresponding attribute bit is set. If so, returns non-zero. 669 */ 670 #define XVA_ISSET_REQ(xvap, attr) \ 671 ((((xvap)->xva_vattr.va_mask | AT_XVATTR) && \ 672 ((xvap)->xva_magic == XVA_MAGIC) && \ 673 ((xvap)->xva_mapsize > XVA_INDEX(attr))) ? \ 674 ((xvap)->xva_reqattrmap[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0) 675 676 /* 677 * XVA_ISSET_RTN() checks the returned attribute bitmap (xva_rtnattrmap[]) 678 * to see of the corresponding attribute bit is set. If so, returns non-zero. 679 */ 680 #define XVA_ISSET_RTN(xvap, attr) \ 681 ((((xvap)->xva_vattr.va_mask | AT_XVATTR) && \ 682 ((xvap)->xva_magic == XVA_MAGIC) && \ 683 ((xvap)->xva_mapsize > XVA_INDEX(attr))) ? \ 684 ((XVA_RTNATTRMAP(xvap))[XVA_INDEX(attr)] & XVA_ATTRBIT(attr)) : 0) 685 686 /* 687 * Modes. Some values same as S_xxx entries from stat.h for convenience. 688 */ 689 #define VSUID 04000 /* set user id on execution */ 690 #define VSGID 02000 /* set group id on execution */ 691 #define VSVTX 01000 /* save swapped text even after use */ 692 693 /* 694 * Permissions. 695 */ 696 #define VREAD 00400 697 #define VWRITE 00200 698 #define VEXEC 00100 699 700 #define MODEMASK 07777 /* mode bits plus permission bits */ 701 #define PERMMASK 00777 /* permission bits */ 702 703 /* 704 * VOP_ACCESS flags 705 */ 706 #define V_ACE_MASK 0x1 /* mask represents NFSv4 ACE permissions */ 707 #define V_APPEND 0x2 /* want to do append only check */ 708 709 /* 710 * Check whether mandatory file locking is enabled. 711 */ 712 713 #define MANDMODE(mode) (((mode) & (VSGID|(VEXEC>>3))) == VSGID) 714 #define MANDLOCK(vp, mode) ((vp)->v_type == VREG && MANDMODE(mode)) 715 716 /* 717 * Flags for vnode operations. 718 */ 719 enum rm { RMFILE, RMDIRECTORY }; /* rm or rmdir (remove) */ 720 enum symfollow { NO_FOLLOW, FOLLOW }; /* follow symlinks (or not) */ 721 enum vcexcl { NONEXCL, EXCL }; /* (non)excl create */ 722 enum create { CRCREAT, CRMKNOD, CRMKDIR }; /* reason for create */ 723 724 typedef enum rm rm_t; 725 typedef enum symfollow symfollow_t; 726 typedef enum vcexcl vcexcl_t; 727 typedef enum create create_t; 728 729 /* 730 * Vnode Events - Used by VOP_VNEVENT 731 * The VE_PRE_RENAME_* events fire before the rename operation and are 732 * primarily used for specialized applications, such as NFSv4 delegation, which 733 * need to know about rename before it occurs. 734 */ 735 typedef enum vnevent { 736 VE_SUPPORT = 0, /* Query */ 737 VE_RENAME_SRC = 1, /* Rename, with vnode as source */ 738 VE_RENAME_DEST = 2, /* Rename, with vnode as target/destination */ 739 VE_REMOVE = 3, /* Remove of vnode's name */ 740 VE_RMDIR = 4, /* Remove of directory vnode's name */ 741 VE_CREATE = 5, /* Create with vnode's name which exists */ 742 VE_LINK = 6, /* Link with vnode's name as source */ 743 VE_RENAME_DEST_DIR = 7, /* Rename with vnode as target dir */ 744 VE_MOUNTEDOVER = 8, /* File or Filesystem got mounted over vnode */ 745 VE_TRUNCATE = 9, /* Truncate */ 746 VE_PRE_RENAME_SRC = 10, /* Pre-rename, with vnode as source */ 747 VE_PRE_RENAME_DEST = 11, /* Pre-rename, with vnode as target/dest. */ 748 VE_PRE_RENAME_DEST_DIR = 12 /* Pre-rename with vnode as target dir */ 749 } vnevent_t; 750 751 /* 752 * Values for checking vnode open and map counts 753 */ 754 enum v_mode { V_READ, V_WRITE, V_RDORWR, V_RDANDWR }; 755 756 typedef enum v_mode v_mode_t; 757 758 #define V_TRUE 1 759 #define V_FALSE 0 760 761 /* 762 * Structure used on VOP_GETSECATTR and VOP_SETSECATTR operations 763 */ 764 765 typedef struct vsecattr { 766 uint_t vsa_mask; /* See below */ 767 int vsa_aclcnt; /* ACL entry count */ 768 void *vsa_aclentp; /* pointer to ACL entries */ 769 int vsa_dfaclcnt; /* default ACL entry count */ 770 void *vsa_dfaclentp; /* pointer to default ACL entries */ 771 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 772 uint_t vsa_aclflags; /* ACE ACL flags */ 773 } vsecattr_t; 774 775 /* vsa_mask values */ 776 #define VSA_ACL 0x0001 777 #define VSA_ACLCNT 0x0002 778 #define VSA_DFACL 0x0004 779 #define VSA_DFACLCNT 0x0008 780 #define VSA_ACE 0x0010 781 #define VSA_ACECNT 0x0020 782 #define VSA_ACE_ALLTYPES 0x0040 783 #define VSA_ACE_ACLFLAGS 0x0080 /* get/set ACE ACL flags */ 784 785 /* 786 * Structure used by various vnode operations to determine 787 * the context (pid, host, identity) of a caller. 788 * 789 * The cc_caller_id is used to identify one or more callers who invoke 790 * operations, possibly on behalf of others. For example, the NFS 791 * server could have it's own cc_caller_id which can be detected by 792 * vnode/vfs operations or (FEM) monitors on those operations. New 793 * caller IDs are generated by fs_new_caller_id(). 794 */ 795 typedef struct caller_context { 796 pid_t cc_pid; /* Process ID of the caller */ 797 int cc_sysid; /* System ID, used for remote calls */ 798 u_longlong_t cc_caller_id; /* Identifier for (set of) caller(s) */ 799 ulong_t cc_flags; 800 } caller_context_t; 801 802 /* 803 * Flags for caller context. The caller sets CC_DONTBLOCK if it does not 804 * want to block inside of a FEM monitor. The monitor will set CC_WOULDBLOCK 805 * and return EAGAIN if the operation would have blocked. 806 */ 807 #define CC_WOULDBLOCK 0x01 808 #define CC_DONTBLOCK 0x02 809 810 /* 811 * Structure tags for function prototypes, defined elsewhere. 812 */ 813 struct pathname; 814 struct fid; 815 struct flock64; 816 struct flk_callback; 817 struct shrlock; 818 struct page; 819 struct seg; 820 struct as; 821 struct pollhead; 822 struct taskq; 823 824 #ifdef _KERNEL 825 826 /* 827 * VNODE_OPS defines all the vnode operations. It is used to define 828 * the vnodeops structure (below) and the fs_func_p union (vfs_opreg.h). 829 */ 830 #define VNODE_OPS \ 831 int (*vop_open)(vnode_t **, int, cred_t *, \ 832 caller_context_t *); \ 833 int (*vop_close)(vnode_t *, int, int, offset_t, cred_t *, \ 834 caller_context_t *); \ 835 int (*vop_read)(vnode_t *, uio_t *, int, cred_t *, \ 836 caller_context_t *); \ 837 int (*vop_write)(vnode_t *, uio_t *, int, cred_t *, \ 838 caller_context_t *); \ 839 int (*vop_ioctl)(vnode_t *, int, intptr_t, int, cred_t *, \ 840 int *, caller_context_t *); \ 841 int (*vop_setfl)(vnode_t *, int, int, cred_t *, \ 842 caller_context_t *); \ 843 int (*vop_getattr)(vnode_t *, vattr_t *, int, cred_t *, \ 844 caller_context_t *); \ 845 int (*vop_setattr)(vnode_t *, vattr_t *, int, cred_t *, \ 846 caller_context_t *); \ 847 int (*vop_access)(vnode_t *, int, int, cred_t *, \ 848 caller_context_t *); \ 849 int (*vop_lookup)(vnode_t *, char *, vnode_t **, \ 850 struct pathname *, \ 851 int, vnode_t *, cred_t *, \ 852 caller_context_t *, int *, \ 853 struct pathname *); \ 854 int (*vop_create)(vnode_t *, char *, vattr_t *, vcexcl_t, \ 855 int, vnode_t **, cred_t *, int, \ 856 caller_context_t *, vsecattr_t *); \ 857 int (*vop_remove)(vnode_t *, char *, cred_t *, \ 858 caller_context_t *, int); \ 859 int (*vop_link)(vnode_t *, vnode_t *, char *, cred_t *, \ 860 caller_context_t *, int); \ 861 int (*vop_rename)(vnode_t *, char *, vnode_t *, char *, \ 862 cred_t *, caller_context_t *, int); \ 863 int (*vop_mkdir)(vnode_t *, char *, vattr_t *, vnode_t **, \ 864 cred_t *, caller_context_t *, int, \ 865 vsecattr_t *); \ 866 int (*vop_rmdir)(vnode_t *, char *, vnode_t *, cred_t *, \ 867 caller_context_t *, int); \ 868 int (*vop_readdir)(vnode_t *, uio_t *, cred_t *, int *, \ 869 caller_context_t *, int); \ 870 int (*vop_symlink)(vnode_t *, char *, vattr_t *, char *, \ 871 cred_t *, caller_context_t *, int); \ 872 int (*vop_readlink)(vnode_t *, uio_t *, cred_t *, \ 873 caller_context_t *); \ 874 int (*vop_fsync)(vnode_t *, int, cred_t *, \ 875 caller_context_t *); \ 876 void (*vop_inactive)(vnode_t *, cred_t *, \ 877 caller_context_t *); \ 878 int (*vop_fid)(vnode_t *, struct fid *, \ 879 caller_context_t *); \ 880 int (*vop_rwlock)(vnode_t *, int, caller_context_t *); \ 881 void (*vop_rwunlock)(vnode_t *, int, caller_context_t *); \ 882 int (*vop_seek)(vnode_t *, offset_t, offset_t *, \ 883 caller_context_t *); \ 884 int (*vop_cmp)(vnode_t *, vnode_t *, caller_context_t *); \ 885 int (*vop_frlock)(vnode_t *, int, struct flock64 *, \ 886 int, offset_t, \ 887 struct flk_callback *, cred_t *, \ 888 caller_context_t *); \ 889 int (*vop_space)(vnode_t *, int, struct flock64 *, \ 890 int, offset_t, \ 891 cred_t *, caller_context_t *); \ 892 int (*vop_realvp)(vnode_t *, vnode_t **, \ 893 caller_context_t *); \ 894 int (*vop_getpage)(vnode_t *, offset_t, size_t, uint_t *, \ 895 struct page **, size_t, struct seg *, \ 896 caddr_t, enum seg_rw, cred_t *, \ 897 caller_context_t *); \ 898 int (*vop_putpage)(vnode_t *, offset_t, size_t, \ 899 int, cred_t *, caller_context_t *); \ 900 int (*vop_map)(vnode_t *, offset_t, struct as *, \ 901 caddr_t *, size_t, \ 902 uchar_t, uchar_t, uint_t, cred_t *, \ 903 caller_context_t *); \ 904 int (*vop_addmap)(vnode_t *, offset_t, struct as *, \ 905 caddr_t, size_t, \ 906 uchar_t, uchar_t, uint_t, cred_t *, \ 907 caller_context_t *); \ 908 int (*vop_delmap)(vnode_t *, offset_t, struct as *, \ 909 caddr_t, size_t, \ 910 uint_t, uint_t, uint_t, cred_t *, \ 911 caller_context_t *); \ 912 int (*vop_poll)(vnode_t *, short, int, short *, \ 913 struct pollhead **, \ 914 caller_context_t *); \ 915 int (*vop_dump)(vnode_t *, caddr_t, offset_t, offset_t, \ 916 caller_context_t *); \ 917 int (*vop_pathconf)(vnode_t *, int, ulong_t *, cred_t *, \ 918 caller_context_t *); \ 919 int (*vop_pageio)(vnode_t *, struct page *, \ 920 u_offset_t, size_t, int, cred_t *, \ 921 caller_context_t *); \ 922 int (*vop_dumpctl)(vnode_t *, int, offset_t *, \ 923 caller_context_t *); \ 924 void (*vop_dispose)(vnode_t *, struct page *, \ 925 int, int, cred_t *, \ 926 caller_context_t *); \ 927 int (*vop_setsecattr)(vnode_t *, vsecattr_t *, \ 928 int, cred_t *, caller_context_t *); \ 929 int (*vop_getsecattr)(vnode_t *, vsecattr_t *, \ 930 int, cred_t *, caller_context_t *); \ 931 int (*vop_shrlock)(vnode_t *, int, struct shrlock *, \ 932 int, cred_t *, caller_context_t *); \ 933 int (*vop_vnevent)(vnode_t *, vnevent_t, vnode_t *, \ 934 char *, caller_context_t *); \ 935 int (*vop_reqzcbuf)(vnode_t *, enum uio_rw, xuio_t *, \ 936 cred_t *, caller_context_t *); \ 937 int (*vop_retzcbuf)(vnode_t *, xuio_t *, cred_t *, \ 938 caller_context_t *) 939 /* NB: No ";" */ 940 941 /* 942 * Operations on vnodes. Note: File systems must never operate directly 943 * on a 'vnodeops' structure -- it WILL change in future releases! They 944 * must use vn_make_ops() to create the structure. 945 */ 946 typedef struct vnodeops { 947 const char *vnop_name; 948 VNODE_OPS; /* Signatures of all vnode operations (vops) */ 949 } vnodeops_t; 950 951 typedef int (*fs_generic_func_p) (); /* Generic vop/vfsop/femop/fsemop ptr */ 952 953 extern int fop_open(vnode_t **, int, cred_t *, caller_context_t *); 954 extern int fop_close(vnode_t *, int, int, offset_t, cred_t *, 955 caller_context_t *); 956 extern int fop_read(vnode_t *, uio_t *, int, cred_t *, caller_context_t *); 957 extern int fop_write(vnode_t *, uio_t *, int, cred_t *, 958 caller_context_t *); 959 extern int fop_ioctl(vnode_t *, int, intptr_t, int, cred_t *, int *, 960 caller_context_t *); 961 extern int fop_setfl(vnode_t *, int, int, cred_t *, caller_context_t *); 962 extern int fop_getattr(vnode_t *, vattr_t *, int, cred_t *, 963 caller_context_t *); 964 extern int fop_setattr(vnode_t *, vattr_t *, int, cred_t *, 965 caller_context_t *); 966 extern int fop_access(vnode_t *, int, int, cred_t *, caller_context_t *); 967 extern int fop_lookup(vnode_t *, char *, vnode_t **, struct pathname *, 968 int, vnode_t *, cred_t *, caller_context_t *, 969 int *, struct pathname *); 970 extern int fop_create(vnode_t *, char *, vattr_t *, vcexcl_t, int, 971 vnode_t **, cred_t *, int, caller_context_t *, 972 vsecattr_t *); 973 extern int fop_remove(vnode_t *vp, char *, cred_t *, caller_context_t *, 974 int); 975 extern int fop_link(vnode_t *, vnode_t *, char *, cred_t *, 976 caller_context_t *, int); 977 extern int fop_rename(vnode_t *, char *, vnode_t *, char *, cred_t *, 978 caller_context_t *, int); 979 extern int fop_mkdir(vnode_t *, char *, vattr_t *, vnode_t **, cred_t *, 980 caller_context_t *, int, vsecattr_t *); 981 extern int fop_rmdir(vnode_t *, char *, vnode_t *, cred_t *, 982 caller_context_t *, int); 983 extern int fop_readdir(vnode_t *, uio_t *, cred_t *, int *, 984 caller_context_t *, int); 985 extern int fop_symlink(vnode_t *, char *, vattr_t *, char *, cred_t *, 986 caller_context_t *, int); 987 extern int fop_readlink(vnode_t *, uio_t *, cred_t *, caller_context_t *); 988 extern int fop_fsync(vnode_t *, int, cred_t *, caller_context_t *); 989 extern void fop_inactive(vnode_t *, cred_t *, caller_context_t *); 990 extern int fop_fid(vnode_t *, struct fid *, caller_context_t *); 991 extern int fop_rwlock(vnode_t *, int, caller_context_t *); 992 extern void fop_rwunlock(vnode_t *, int, caller_context_t *); 993 extern int fop_seek(vnode_t *, offset_t, offset_t *, caller_context_t *); 994 extern int fop_cmp(vnode_t *, vnode_t *, caller_context_t *); 995 extern int fop_frlock(vnode_t *, int, struct flock64 *, int, offset_t, 996 struct flk_callback *, cred_t *, 997 caller_context_t *); 998 extern int fop_space(vnode_t *, int, struct flock64 *, int, offset_t, 999 cred_t *, caller_context_t *); 1000 extern int fop_realvp(vnode_t *, vnode_t **, caller_context_t *); 1001 extern int fop_getpage(vnode_t *, offset_t, size_t, uint_t *, 1002 struct page **, size_t, struct seg *, 1003 caddr_t, enum seg_rw, cred_t *, 1004 caller_context_t *); 1005 extern int fop_putpage(vnode_t *, offset_t, size_t, int, cred_t *, 1006 caller_context_t *); 1007 extern int fop_map(vnode_t *, offset_t, struct as *, caddr_t *, size_t, 1008 uchar_t, uchar_t, uint_t, cred_t *cr, 1009 caller_context_t *); 1010 extern int fop_addmap(vnode_t *, offset_t, struct as *, caddr_t, size_t, 1011 uchar_t, uchar_t, uint_t, cred_t *, 1012 caller_context_t *); 1013 extern int fop_delmap(vnode_t *, offset_t, struct as *, caddr_t, size_t, 1014 uint_t, uint_t, uint_t, cred_t *, 1015 caller_context_t *); 1016 extern int fop_poll(vnode_t *, short, int, short *, struct pollhead **, 1017 caller_context_t *); 1018 extern int fop_dump(vnode_t *, caddr_t, offset_t, offset_t, 1019 caller_context_t *); 1020 extern int fop_pathconf(vnode_t *, int, ulong_t *, cred_t *, 1021 caller_context_t *); 1022 extern int fop_pageio(vnode_t *, struct page *, u_offset_t, size_t, int, 1023 cred_t *, caller_context_t *); 1024 extern int fop_dumpctl(vnode_t *, int, offset_t *, caller_context_t *); 1025 extern void fop_dispose(vnode_t *, struct page *, int, int, cred_t *, 1026 caller_context_t *); 1027 extern int fop_setsecattr(vnode_t *, vsecattr_t *, int, cred_t *, 1028 caller_context_t *); 1029 extern int fop_getsecattr(vnode_t *, vsecattr_t *, int, cred_t *, 1030 caller_context_t *); 1031 extern int fop_shrlock(vnode_t *, int, struct shrlock *, int, cred_t *, 1032 caller_context_t *); 1033 extern int fop_vnevent(vnode_t *, vnevent_t, vnode_t *, char *, 1034 caller_context_t *); 1035 extern int fop_reqzcbuf(vnode_t *, enum uio_rw, xuio_t *, cred_t *, 1036 caller_context_t *); 1037 extern int fop_retzcbuf(vnode_t *, xuio_t *, cred_t *, caller_context_t *); 1038 1039 #endif /* _KERNEL */ 1040 1041 #define VOP_OPEN(vpp, mode, cr, ct) \ 1042 fop_open(vpp, mode, cr, ct) 1043 #define VOP_CLOSE(vp, f, c, o, cr, ct) \ 1044 fop_close(vp, f, c, o, cr, ct) 1045 #define VOP_READ(vp, uiop, iof, cr, ct) \ 1046 fop_read(vp, uiop, iof, cr, ct) 1047 #define VOP_WRITE(vp, uiop, iof, cr, ct) \ 1048 fop_write(vp, uiop, iof, cr, ct) 1049 #define VOP_IOCTL(vp, cmd, a, f, cr, rvp, ct) \ 1050 fop_ioctl(vp, cmd, a, f, cr, rvp, ct) 1051 #define VOP_SETFL(vp, f, a, cr, ct) \ 1052 fop_setfl(vp, f, a, cr, ct) 1053 #define VOP_GETATTR(vp, vap, f, cr, ct) \ 1054 fop_getattr(vp, vap, f, cr, ct) 1055 #define VOP_SETATTR(vp, vap, f, cr, ct) \ 1056 fop_setattr(vp, vap, f, cr, ct) 1057 #define VOP_ACCESS(vp, mode, f, cr, ct) \ 1058 fop_access(vp, mode, f, cr, ct) 1059 #define VOP_LOOKUP(vp, cp, vpp, pnp, f, rdir, cr, ct, defp, rpnp) \ 1060 fop_lookup(vp, cp, vpp, pnp, f, rdir, cr, ct, defp, rpnp) 1061 #define VOP_CREATE(dvp, p, vap, ex, mode, vpp, cr, flag, ct, vsap) \ 1062 fop_create(dvp, p, vap, ex, mode, vpp, cr, flag, ct, vsap) 1063 #define VOP_REMOVE(dvp, p, cr, ct, f) \ 1064 fop_remove(dvp, p, cr, ct, f) 1065 #define VOP_LINK(tdvp, fvp, p, cr, ct, f) \ 1066 fop_link(tdvp, fvp, p, cr, ct, f) 1067 #define VOP_RENAME(fvp, fnm, tdvp, tnm, cr, ct, f) \ 1068 fop_rename(fvp, fnm, tdvp, tnm, cr, ct, f) 1069 #define VOP_MKDIR(dp, p, vap, vpp, cr, ct, f, vsap) \ 1070 fop_mkdir(dp, p, vap, vpp, cr, ct, f, vsap) 1071 #define VOP_RMDIR(dp, p, cdir, cr, ct, f) \ 1072 fop_rmdir(dp, p, cdir, cr, ct, f) 1073 #define VOP_READDIR(vp, uiop, cr, eofp, ct, f) \ 1074 fop_readdir(vp, uiop, cr, eofp, ct, f) 1075 #define VOP_SYMLINK(dvp, lnm, vap, tnm, cr, ct, f) \ 1076 fop_symlink(dvp, lnm, vap, tnm, cr, ct, f) 1077 #define VOP_READLINK(vp, uiop, cr, ct) \ 1078 fop_readlink(vp, uiop, cr, ct) 1079 #define VOP_FSYNC(vp, syncflag, cr, ct) \ 1080 fop_fsync(vp, syncflag, cr, ct) 1081 #define VOP_INACTIVE(vp, cr, ct) \ 1082 fop_inactive(vp, cr, ct) 1083 #define VOP_FID(vp, fidp, ct) \ 1084 fop_fid(vp, fidp, ct) 1085 #define VOP_RWLOCK(vp, w, ct) \ 1086 fop_rwlock(vp, w, ct) 1087 #define VOP_RWUNLOCK(vp, w, ct) \ 1088 fop_rwunlock(vp, w, ct) 1089 #define VOP_SEEK(vp, ooff, noffp, ct) \ 1090 fop_seek(vp, ooff, noffp, ct) 1091 #define VOP_CMP(vp1, vp2, ct) \ 1092 fop_cmp(vp1, vp2, ct) 1093 #define VOP_FRLOCK(vp, cmd, a, f, o, cb, cr, ct) \ 1094 fop_frlock(vp, cmd, a, f, o, cb, cr, ct) 1095 #define VOP_SPACE(vp, cmd, a, f, o, cr, ct) \ 1096 fop_space(vp, cmd, a, f, o, cr, ct) 1097 #define VOP_REALVP(vp1, vp2, ct) \ 1098 fop_realvp(vp1, vp2, ct) 1099 #define VOP_GETPAGE(vp, of, sz, pr, pl, ps, sg, a, rw, cr, ct) \ 1100 fop_getpage(vp, of, sz, pr, pl, ps, sg, a, rw, cr, ct) 1101 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) \ 1102 fop_putpage(vp, of, sz, fl, cr, ct) 1103 #define VOP_MAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \ 1104 fop_map(vp, of, as, a, sz, p, mp, fl, cr, ct) 1105 #define VOP_ADDMAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \ 1106 fop_addmap(vp, of, as, a, sz, p, mp, fl, cr, ct) 1107 #define VOP_DELMAP(vp, of, as, a, sz, p, mp, fl, cr, ct) \ 1108 fop_delmap(vp, of, as, a, sz, p, mp, fl, cr, ct) 1109 #define VOP_POLL(vp, events, anyyet, reventsp, phpp, ct) \ 1110 fop_poll(vp, events, anyyet, reventsp, phpp, ct) 1111 #define VOP_DUMP(vp, addr, bn, count, ct) \ 1112 fop_dump(vp, addr, bn, count, ct) 1113 #define VOP_PATHCONF(vp, cmd, valp, cr, ct) \ 1114 fop_pathconf(vp, cmd, valp, cr, ct) 1115 #define VOP_PAGEIO(vp, pp, io_off, io_len, flags, cr, ct) \ 1116 fop_pageio(vp, pp, io_off, io_len, flags, cr, ct) 1117 #define VOP_DUMPCTL(vp, action, blkp, ct) \ 1118 fop_dumpctl(vp, action, blkp, ct) 1119 #define VOP_DISPOSE(vp, pp, flag, dn, cr, ct) \ 1120 fop_dispose(vp, pp, flag, dn, cr, ct) 1121 #define VOP_GETSECATTR(vp, vsap, f, cr, ct) \ 1122 fop_getsecattr(vp, vsap, f, cr, ct) 1123 #define VOP_SETSECATTR(vp, vsap, f, cr, ct) \ 1124 fop_setsecattr(vp, vsap, f, cr, ct) 1125 #define VOP_SHRLOCK(vp, cmd, shr, f, cr, ct) \ 1126 fop_shrlock(vp, cmd, shr, f, cr, ct) 1127 #define VOP_VNEVENT(vp, vnevent, dvp, fnm, ct) \ 1128 fop_vnevent(vp, vnevent, dvp, fnm, ct) 1129 #define VOP_REQZCBUF(vp, rwflag, xuiop, cr, ct) \ 1130 fop_reqzcbuf(vp, rwflag, xuiop, cr, ct) 1131 #define VOP_RETZCBUF(vp, xuiop, cr, ct) \ 1132 fop_retzcbuf(vp, xuiop, cr, ct) 1133 1134 #define VOPNAME_OPEN "open" 1135 #define VOPNAME_CLOSE "close" 1136 #define VOPNAME_READ "read" 1137 #define VOPNAME_WRITE "write" 1138 #define VOPNAME_IOCTL "ioctl" 1139 #define VOPNAME_SETFL "setfl" 1140 #define VOPNAME_GETATTR "getattr" 1141 #define VOPNAME_SETATTR "setattr" 1142 #define VOPNAME_ACCESS "access" 1143 #define VOPNAME_LOOKUP "lookup" 1144 #define VOPNAME_CREATE "create" 1145 #define VOPNAME_REMOVE "remove" 1146 #define VOPNAME_LINK "link" 1147 #define VOPNAME_RENAME "rename" 1148 #define VOPNAME_MKDIR "mkdir" 1149 #define VOPNAME_RMDIR "rmdir" 1150 #define VOPNAME_READDIR "readdir" 1151 #define VOPNAME_SYMLINK "symlink" 1152 #define VOPNAME_READLINK "readlink" 1153 #define VOPNAME_FSYNC "fsync" 1154 #define VOPNAME_INACTIVE "inactive" 1155 #define VOPNAME_FID "fid" 1156 #define VOPNAME_RWLOCK "rwlock" 1157 #define VOPNAME_RWUNLOCK "rwunlock" 1158 #define VOPNAME_SEEK "seek" 1159 #define VOPNAME_CMP "cmp" 1160 #define VOPNAME_FRLOCK "frlock" 1161 #define VOPNAME_SPACE "space" 1162 #define VOPNAME_REALVP "realvp" 1163 #define VOPNAME_GETPAGE "getpage" 1164 #define VOPNAME_PUTPAGE "putpage" 1165 #define VOPNAME_MAP "map" 1166 #define VOPNAME_ADDMAP "addmap" 1167 #define VOPNAME_DELMAP "delmap" 1168 #define VOPNAME_POLL "poll" 1169 #define VOPNAME_DUMP "dump" 1170 #define VOPNAME_PATHCONF "pathconf" 1171 #define VOPNAME_PAGEIO "pageio" 1172 #define VOPNAME_DUMPCTL "dumpctl" 1173 #define VOPNAME_DISPOSE "dispose" 1174 #define VOPNAME_GETSECATTR "getsecattr" 1175 #define VOPNAME_SETSECATTR "setsecattr" 1176 #define VOPNAME_SHRLOCK "shrlock" 1177 #define VOPNAME_VNEVENT "vnevent" 1178 #define VOPNAME_REQZCBUF "reqzcbuf" 1179 #define VOPNAME_RETZCBUF "retzcbuf" 1180 1181 /* 1182 * Flags for VOP_LOOKUP 1183 * 1184 * Defined in file.h, but also possible, FIGNORECASE and FSEARCH 1185 * 1186 */ 1187 #define LOOKUP_DIR 0x01 /* want parent dir vp */ 1188 #define LOOKUP_XATTR 0x02 /* lookup up extended attr dir */ 1189 #define CREATE_XATTR_DIR 0x04 /* Create extended attr dir */ 1190 #define LOOKUP_HAVE_SYSATTR_DIR 0x08 /* Already created virtual GFS dir */ 1191 1192 /* 1193 * Flags for VOP_READDIR 1194 */ 1195 #define V_RDDIR_ENTFLAGS 0x01 /* request dirent flags */ 1196 #define V_RDDIR_ACCFILTER 0x02 /* filter out inaccessible dirents */ 1197 1198 /* 1199 * Flags for VOP_RWLOCK/VOP_RWUNLOCK 1200 * VOP_RWLOCK will return the flag that was actually set, or -1 if none. 1201 */ 1202 #define V_WRITELOCK_TRUE (1) /* Request write-lock on the vnode */ 1203 #define V_WRITELOCK_FALSE (0) /* Request read-lock on the vnode */ 1204 1205 /* 1206 * Flags for VOP_DUMPCTL 1207 */ 1208 #define DUMP_ALLOC 0 1209 #define DUMP_FREE 1 1210 #define DUMP_SCAN 2 1211 1212 /* 1213 * Public vnode manipulation functions. 1214 */ 1215 #ifdef _KERNEL 1216 1217 vnode_t *vn_alloc(int); 1218 void vn_reinit(vnode_t *); 1219 void vn_recycle(vnode_t *); 1220 void vn_free(vnode_t *); 1221 1222 int vn_is_readonly(vnode_t *); 1223 int vn_is_opened(vnode_t *, v_mode_t); 1224 int vn_is_mapped(vnode_t *, v_mode_t); 1225 int vn_has_other_opens(vnode_t *, v_mode_t); 1226 void vn_open_upgrade(vnode_t *, int); 1227 void vn_open_downgrade(vnode_t *, int); 1228 1229 int vn_can_change_zones(vnode_t *vp); 1230 1231 int vn_has_flocks(vnode_t *); 1232 int vn_has_mandatory_locks(vnode_t *, int); 1233 int vn_has_cached_data(vnode_t *); 1234 1235 void vn_setops(vnode_t *, vnodeops_t *); 1236 vnodeops_t *vn_getops(vnode_t *); 1237 int vn_matchops(vnode_t *, vnodeops_t *); 1238 int vn_matchopval(vnode_t *, char *, fs_generic_func_p); 1239 int vn_ismntpt(vnode_t *); 1240 1241 struct vfs *vn_mountedvfs(vnode_t *); 1242 1243 int vn_in_dnlc(vnode_t *); 1244 1245 void vn_create_cache(void); 1246 void vn_destroy_cache(void); 1247 1248 void vn_freevnodeops(vnodeops_t *); 1249 1250 int vn_open(char *pnamep, enum uio_seg seg, int filemode, int createmode, 1251 struct vnode **vpp, enum create crwhy, mode_t umask); 1252 int vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode, 1253 struct vnode **vpp, enum create crwhy, 1254 mode_t umask, struct vnode *startvp, int fd); 1255 int vn_create(char *pnamep, enum uio_seg seg, struct vattr *vap, 1256 enum vcexcl excl, int mode, struct vnode **vpp, 1257 enum create why, int flag, mode_t umask); 1258 int vn_createat(char *pnamep, enum uio_seg seg, struct vattr *vap, 1259 enum vcexcl excl, int mode, struct vnode **vpp, 1260 enum create why, int flag, mode_t umask, struct vnode *startvp); 1261 int vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base, ssize_t len, 1262 offset_t offset, enum uio_seg seg, int ioflag, rlim64_t ulimit, 1263 cred_t *cr, ssize_t *residp); 1264 void vn_rele(struct vnode *vp); 1265 void vn_rele_async(struct vnode *vp, struct taskq *taskq); 1266 void vn_rele_dnlc(struct vnode *vp); 1267 void vn_rele_stream(struct vnode *vp); 1268 int vn_link(char *from, char *to, enum uio_seg seg); 1269 int vn_linkat(vnode_t *fstartvp, char *from, enum symfollow follow, 1270 vnode_t *tstartvp, char *to, enum uio_seg seg); 1271 int vn_rename(char *from, char *to, enum uio_seg seg); 1272 int vn_renameat(vnode_t *fdvp, char *fname, vnode_t *tdvp, char *tname, 1273 enum uio_seg seg); 1274 int vn_remove(char *fnamep, enum uio_seg seg, enum rm dirflag); 1275 int vn_removeat(vnode_t *startvp, char *fnamep, enum uio_seg seg, 1276 enum rm dirflag); 1277 int vn_compare(vnode_t *vp1, vnode_t *vp2); 1278 int vn_vfswlock(struct vnode *vp); 1279 int vn_vfswlock_wait(struct vnode *vp); 1280 int vn_vfsrlock(struct vnode *vp); 1281 int vn_vfsrlock_wait(struct vnode *vp); 1282 void vn_vfsunlock(struct vnode *vp); 1283 int vn_vfswlock_held(struct vnode *vp); 1284 vnode_t *specvp(struct vnode *vp, dev_t dev, vtype_t type, struct cred *cr); 1285 vnode_t *makespecvp(dev_t dev, vtype_t type); 1286 vn_vfslocks_entry_t *vn_vfslocks_getlock(void *); 1287 void vn_vfslocks_rele(vn_vfslocks_entry_t *); 1288 boolean_t vn_is_reparse(vnode_t *, cred_t *, caller_context_t *); 1289 1290 void vn_copypath(struct vnode *src, struct vnode *dst); 1291 void vn_setpath_str(struct vnode *vp, const char *str, size_t len); 1292 void vn_setpath(vnode_t *rootvp, struct vnode *startvp, struct vnode *vp, 1293 const char *path, size_t plen); 1294 void vn_renamepath(vnode_t *dvp, vnode_t *vp, const char *nm, size_t len); 1295 1296 /* Vnode event notification */ 1297 void vnevent_rename_src(vnode_t *, vnode_t *, char *, caller_context_t *); 1298 void vnevent_rename_dest(vnode_t *, vnode_t *, char *, caller_context_t *); 1299 void vnevent_remove(vnode_t *, vnode_t *, char *, caller_context_t *); 1300 void vnevent_rmdir(vnode_t *, vnode_t *, char *, caller_context_t *); 1301 void vnevent_create(vnode_t *, caller_context_t *); 1302 void vnevent_link(vnode_t *, caller_context_t *); 1303 void vnevent_rename_dest_dir(vnode_t *, caller_context_t *ct); 1304 void vnevent_mountedover(vnode_t *, caller_context_t *); 1305 void vnevent_truncate(vnode_t *, caller_context_t *); 1306 int vnevent_support(vnode_t *, caller_context_t *); 1307 void vnevent_pre_rename_src(vnode_t *, vnode_t *, char *, 1308 caller_context_t *); 1309 void vnevent_pre_rename_dest(vnode_t *, vnode_t *, char *, 1310 caller_context_t *); 1311 void vnevent_pre_rename_dest_dir(vnode_t *, vnode_t *, char *, 1312 caller_context_t *); 1313 1314 /* Vnode specific data */ 1315 void vsd_create(uint_t *, void (*)(void *)); 1316 void vsd_destroy(uint_t *); 1317 void *vsd_get(vnode_t *, uint_t); 1318 int vsd_set(vnode_t *, uint_t, void *); 1319 void vsd_free(vnode_t *); 1320 1321 /* 1322 * Extensible vnode attribute (xva) routines: 1323 * xva_init() initializes an xvattr_t (zero struct, init mapsize, set AT_XATTR) 1324 * xva_getxoptattr() returns a ponter to the xoptattr_t section of xvattr_t 1325 */ 1326 void xva_init(xvattr_t *); 1327 xoptattr_t *xva_getxoptattr(xvattr_t *); /* Get ptr to xoptattr_t */ 1328 1329 void xattr_init(void); /* Initialize vnodeops for xattrs */ 1330 1331 /* GFS tunnel for xattrs */ 1332 int xattr_dir_lookup(vnode_t *, vnode_t **, int, cred_t *); 1333 1334 /* Reparse Point */ 1335 void reparse_point_init(void); 1336 1337 /* Context identification */ 1338 u_longlong_t fs_new_caller_id(); 1339 1340 int vn_vmpss_usepageio(vnode_t *); 1341 1342 /* 1343 * Needed for use of IS_VMODSORT() in kernel. 1344 */ 1345 extern uint_t pvn_vmodsort_supported; 1346 1347 /* 1348 * All changes to v_count should be done through VN_HOLD() or VN_RELE(), or 1349 * one of their variants. This makes it possible to ensure proper locking, 1350 * and to guarantee that all modifications are accompanied by a firing of 1351 * the vn-hold or vn-rele SDT DTrace probe. 1352 * 1353 * Example DTrace command for tracing vnode references using these probes: 1354 * 1355 * dtrace -q -n 'sdt:::vn-hold,sdt:::vn-rele 1356 * { 1357 * this->vp = (vnode_t *)arg0; 1358 * printf("%s %s(%p[%s]) %d\n", execname, probename, this->vp, 1359 * this->vp->v_path == NULL ? "NULL" : stringof(this->vp->v_path), 1360 * this->vp->v_count) 1361 * }' 1362 */ 1363 #define VN_HOLD_LOCKED(vp) { \ 1364 ASSERT(mutex_owned(&(vp)->v_lock)); \ 1365 (vp)->v_count++; \ 1366 DTRACE_PROBE1(vn__hold, vnode_t *, vp); \ 1367 } 1368 1369 #define VN_HOLD(vp) { \ 1370 mutex_enter(&(vp)->v_lock); \ 1371 VN_HOLD_LOCKED(vp); \ 1372 mutex_exit(&(vp)->v_lock); \ 1373 } 1374 1375 #define VN_RELE(vp) { \ 1376 vn_rele(vp); \ 1377 } 1378 1379 #define VN_RELE_ASYNC(vp, taskq) { \ 1380 vn_rele_async(vp, taskq); \ 1381 } 1382 1383 #define VN_RELE_LOCKED(vp) { \ 1384 ASSERT(mutex_owned(&(vp)->v_lock)); \ 1385 ASSERT((vp)->v_count >= 1); \ 1386 (vp)->v_count--; \ 1387 DTRACE_PROBE1(vn__rele, vnode_t *, vp); \ 1388 } 1389 1390 #define VN_SET_VFS_TYPE_DEV(vp, vfsp, type, dev) { \ 1391 (vp)->v_vfsp = (vfsp); \ 1392 (vp)->v_type = (type); \ 1393 (vp)->v_rdev = (dev); \ 1394 } 1395 1396 /* 1397 * Compare two vnodes for equality. In general this macro should be used 1398 * in preference to calling VOP_CMP directly. 1399 */ 1400 #define VN_CMP(VP1, VP2) ((VP1) == (VP2) ? 1 : \ 1401 ((VP1) && (VP2) && (vn_getops(VP1) == vn_getops(VP2)) ? \ 1402 VOP_CMP(VP1, VP2, NULL) : 0)) 1403 1404 /* 1405 * Some well-known global vnodes used by the VM system to name pages. 1406 */ 1407 extern struct vnode kvps[]; 1408 1409 typedef enum { 1410 KV_KVP, /* vnode for all segkmem pages */ 1411 KV_ZVP, /* vnode for all ZFS pages */ 1412 #if defined(__sparc) 1413 KV_MPVP, /* vnode for all page_t meta-pages */ 1414 KV_PROMVP, /* vnode for all PROM pages */ 1415 #endif /* __sparc */ 1416 KV_MAX /* total number of vnodes in kvps[] */ 1417 } kvps_index_t; 1418 1419 #define VN_ISKAS(vp) ((vp) >= &kvps[0] && (vp) < &kvps[KV_MAX]) 1420 1421 #endif /* _KERNEL */ 1422 1423 /* 1424 * Flags to VOP_SETATTR/VOP_GETATTR. 1425 */ 1426 #define ATTR_UTIME 0x01 /* non-default utime(2) request */ 1427 #define ATTR_EXEC 0x02 /* invocation from exec(2) */ 1428 #define ATTR_COMM 0x04 /* yield common vp attributes */ 1429 #define ATTR_HINT 0x08 /* information returned will be `hint' */ 1430 #define ATTR_REAL 0x10 /* yield attributes of the real vp */ 1431 #define ATTR_NOACLCHECK 0x20 /* Don't check ACL when checking permissions */ 1432 #define ATTR_TRIGGER 0x40 /* Mount first if vnode is a trigger mount */ 1433 /* 1434 * Generally useful macros. 1435 */ 1436 #define VBSIZE(vp) ((vp)->v_vfsp->vfs_bsize) 1437 1438 #define VTOZONE(vp) ((vp)->v_vfsp->vfs_zone) 1439 1440 #define NULLVP ((struct vnode *)0) 1441 #define NULLVPP ((struct vnode **)0) 1442 1443 #ifdef _KERNEL 1444 1445 /* 1446 * Structure used while handling asynchronous VOP_PUTPAGE operations. 1447 */ 1448 struct async_reqs { 1449 struct async_reqs *a_next; /* pointer to next arg struct */ 1450 struct vnode *a_vp; /* vnode pointer */ 1451 u_offset_t a_off; /* offset in file */ 1452 uint_t a_len; /* size of i/o request */ 1453 int a_flags; /* flags to indicate operation type */ 1454 struct cred *a_cred; /* cred pointer */ 1455 ushort_t a_prealloced; /* set if struct is pre-allocated */ 1456 }; 1457 1458 /* 1459 * VN_DISPOSE() -- given a page pointer, safely invoke VOP_DISPOSE(). 1460 * Note that there is no guarantee that the page passed in will be 1461 * freed. If that is required, then a check after calling VN_DISPOSE would 1462 * be necessary to ensure the page was freed. 1463 */ 1464 #define VN_DISPOSE(pp, flag, dn, cr) { \ 1465 if ((pp)->p_vnode != NULL && !VN_ISKAS((pp)->p_vnode)) \ 1466 VOP_DISPOSE((pp)->p_vnode, (pp), (flag), (dn), (cr), NULL); \ 1467 else if ((flag) == B_FREE) \ 1468 page_free((pp), (dn)); \ 1469 else \ 1470 page_destroy((pp), (dn)); \ 1471 } 1472 1473 #endif /* _KERNEL */ 1474 1475 #ifdef __cplusplus 1476 } 1477 #endif 1478 1479 #endif /* _SYS_VNODE_H */ 1480