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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * University Copyright- Copyright (c) 1982, 1986, 1988 31 * The Regents of the University of California 32 * All Rights Reserved 33 * 34 * University Acknowledgment- Portions of this document are derived from 35 * software developed by the University of California, Berkeley, and its 36 * contributors. 37 */ 38 39 #ifndef _SYS_VNODE_H 40 #define _SYS_VNODE_H 41 42 #pragma ident "%Z%%M% %I% %E% SMI" 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 #endif /* _KERNEL */ 58 59 #ifdef __cplusplus 60 extern "C" { 61 #endif 62 63 /* 64 * Statistics for all vnode operations. 65 * All operations record number of ops (since boot/mount/zero'ed). 66 * Certain I/O operations (read, write, readdir) also record number 67 * of bytes transferred. 68 * This appears in two places in the system: one is embedded in each 69 * vfs_t. There is also an array of vopstats_t structures allocated 70 * on a per-fstype basis. 71 */ 72 73 #define VOPSTATS_STR "vopstats_" /* Initial string for vopstat kstats */ 74 75 typedef struct vopstats { 76 kstat_named_t nopen; /* VOP_OPEN */ 77 kstat_named_t nclose; /* VOP_CLOSE */ 78 kstat_named_t nread; /* VOP_READ */ 79 kstat_named_t read_bytes; 80 kstat_named_t nwrite; /* VOP_WRITE */ 81 kstat_named_t write_bytes; 82 kstat_named_t nioctl; /* VOP_IOCTL */ 83 kstat_named_t nsetfl; /* VOP_SETFL */ 84 kstat_named_t ngetattr; /* VOP_GETATTR */ 85 kstat_named_t nsetattr; /* VOP_SETATTR */ 86 kstat_named_t naccess; /* VOP_ACCESS */ 87 kstat_named_t nlookup; /* VOP_LOOKUP */ 88 kstat_named_t ncreate; /* VOP_CREATE */ 89 kstat_named_t nremove; /* VOP_REMOVE */ 90 kstat_named_t nlink; /* VOP_LINK */ 91 kstat_named_t nrename; /* VOP_RENAME */ 92 kstat_named_t nmkdir; /* VOP_MKDIR */ 93 kstat_named_t nrmdir; /* VOP_RMDIR */ 94 kstat_named_t nreaddir; /* VOP_READDIR */ 95 kstat_named_t readdir_bytes; 96 kstat_named_t nsymlink; /* VOP_SYMLINK */ 97 kstat_named_t nreadlink; /* VOP_READLINK */ 98 kstat_named_t nfsync; /* VOP_FSYNC */ 99 kstat_named_t ninactive; /* VOP_INACTIVE */ 100 kstat_named_t nfid; /* VOP_FID */ 101 kstat_named_t nrwlock; /* VOP_RWLOCK */ 102 kstat_named_t nrwunlock; /* VOP_RWUNLOCK */ 103 kstat_named_t nseek; /* VOP_SEEK */ 104 kstat_named_t ncmp; /* VOP_CMP */ 105 kstat_named_t nfrlock; /* VOP_FRLOCK */ 106 kstat_named_t nspace; /* VOP_SPACE */ 107 kstat_named_t nrealvp; /* VOP_REALVP */ 108 kstat_named_t ngetpage; /* VOP_GETPAGE */ 109 kstat_named_t nputpage; /* VOP_PUTPAGE */ 110 kstat_named_t nmap; /* VOP_MAP */ 111 kstat_named_t naddmap; /* VOP_ADDMAP */ 112 kstat_named_t ndelmap; /* VOP_DELMAP */ 113 kstat_named_t npoll; /* VOP_POLL */ 114 kstat_named_t ndump; /* VOP_DUMP */ 115 kstat_named_t npathconf; /* VOP_PATHCONF */ 116 kstat_named_t npageio; /* VOP_PAGEIO */ 117 kstat_named_t ndumpctl; /* VOP_DUMPCTL */ 118 kstat_named_t ndispose; /* VOP_DISPOSE */ 119 kstat_named_t nsetsecattr; /* VOP_SETSECATTR */ 120 kstat_named_t ngetsecattr; /* VOP_GETSECATTR */ 121 kstat_named_t nshrlock; /* VOP_SHRLOCK */ 122 kstat_named_t nvnevent; /* VOP_VNEVENT */ 123 } vopstats_t; 124 125 /* 126 * The vnode is the focus of all file activity in UNIX. 127 * A vnode is allocated for each active file, each current 128 * directory, each mounted-on file, and the root. 129 * 130 * Each vnode is usually associated with a file-system-specific node (for 131 * UFS, this is the in-memory inode). Generally, a vnode and an fs-node 132 * should be created and destroyed together as a pair. 133 * 134 * If a vnode is reused for a new file, it should be reinitialized by calling 135 * either vn_reinit() or vn_recycle(). 136 * 137 * vn_reinit() resets the entire vnode as if it was returned by vn_alloc(). 138 * The caller is responsible for setting up the entire vnode after calling 139 * vn_reinit(). This is important when using kmem caching where the vnode is 140 * allocated by a constructor, for instance. 141 * 142 * vn_recycle() is used when the file system keeps some state around in both 143 * the vnode and the associated FS-node. In UFS, for example, the inode of 144 * a deleted file can be reused immediately. The v_data, v_vfsp, v_op, etc. 145 * remains the same but certain fields related to the previous instance need 146 * to be reset. In particular: 147 * v_femhead 148 * v_path 149 * v_rdcnt, v_wrcnt 150 * v_mmap_read, v_mmap_write 151 */ 152 153 /* 154 * vnode types. VNON means no type. These values are unrelated to 155 * values in on-disk inodes. 156 */ 157 typedef enum vtype { 158 VNON = 0, 159 VREG = 1, 160 VDIR = 2, 161 VBLK = 3, 162 VCHR = 4, 163 VLNK = 5, 164 VFIFO = 6, 165 VDOOR = 7, 166 VPROC = 8, 167 VSOCK = 9, 168 VPORT = 10, 169 VBAD = 11 170 } vtype_t; 171 172 /* 173 * VSD - Vnode Specific Data 174 * Used to associate additional private data with a vnode. 175 */ 176 struct vsd_node { 177 list_node_t vs_nodes; /* list of all VSD nodes */ 178 uint_t vs_nkeys; /* entries in value array */ 179 void **vs_value; /* array of value/key */ 180 }; 181 182 /* 183 * Many of the fields in the vnode are read-only once they are initialized 184 * at vnode creation time. Other fields are protected by locks. 185 * 186 * IMPORTANT: vnodes should be created ONLY by calls to vn_alloc(). They 187 * may not be embedded into the file-system specific node (inode). The 188 * size of vnodes may change. 189 * 190 * The v_lock protects: 191 * v_flag 192 * v_stream 193 * v_count 194 * v_shrlocks 195 * v_path 196 * v_vsd 197 * 198 * A special lock (implemented by vn_vfswlock in vnode.c) protects: 199 * v_vfsmountedhere 200 * 201 * The global flock_lock mutex (in flock.c) protects: 202 * v_filocks 203 * 204 * IMPORTANT NOTE: 205 * 206 * The following vnode fields are considered public and may safely be 207 * accessed by file systems or other consumers: 208 * 209 * v_lock 210 * v_flag 211 * v_count 212 * v_data 213 * v_vfsp 214 * v_stream 215 * v_type 216 * v_rdev 217 * 218 * ALL OTHER FIELDS SHOULD BE ACCESSED ONLY BY THE OWNER OF THAT FIELD. 219 * In particular, file systems should not access other fields; they may 220 * change or even be removed. The functionality which was once provided 221 * by these fields is available through vn_* functions. 222 */ 223 224 struct fem_head; /* from fem.h */ 225 226 typedef struct vnode { 227 kmutex_t v_lock; /* protects vnode fields */ 228 uint_t v_flag; /* vnode flags (see below) */ 229 uint_t v_count; /* reference count */ 230 void *v_data; /* private data for fs */ 231 struct vfs *v_vfsp; /* ptr to containing VFS */ 232 struct stdata *v_stream; /* associated stream */ 233 enum vtype v_type; /* vnode type */ 234 dev_t v_rdev; /* device (VCHR, VBLK) */ 235 236 /* PRIVATE FIELDS BELOW - DO NOT USE */ 237 238 struct vfs *v_vfsmountedhere; /* ptr to vfs mounted here */ 239 struct vnodeops *v_op; /* vnode operations */ 240 struct page *v_pages; /* vnode pages list */ 241 pgcnt_t v_npages; /* # pages on this vnode */ 242 pgcnt_t v_msnpages; /* # pages charged to v_mset */ 243 struct page *v_scanfront; /* scanner front hand */ 244 struct page *v_scanback; /* scanner back hand */ 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 hrtime_t v_scantime; /* last time this vnode was scanned */ 258 ushort_t v_mset; /* memory set ID */ 259 uint_t v_msflags; /* memory set flags */ 260 struct vnode *v_msnext; /* list of vnodes on an mset */ 261 struct vnode *v_msprev; /* list of vnodes on an mset */ 262 krwlock_t v_mslock; /* protects v_mset */ 263 void *v_fopdata; /* list of file ops event watches */ 264 struct vsd_node *v_vsd; /* vnode specific data */ 265 } vnode_t; 266 267 #define IS_DEVVP(vp) \ 268 ((vp)->v_type == VCHR || (vp)->v_type == VBLK || (vp)->v_type == VFIFO) 269 270 /* 271 * vnode flags. 272 */ 273 #define VROOT 0x01 /* root of its file system */ 274 #define VNOCACHE 0x02 /* don't keep cache pages on vnode */ 275 #define VNOMAP 0x04 /* file cannot be mapped/faulted */ 276 #define VDUP 0x08 /* file should be dup'ed rather then opened */ 277 #define VNOSWAP 0x10 /* file cannot be used as virtual swap device */ 278 #define VNOMOUNT 0x20 /* file cannot be covered by mount */ 279 #define VISSWAP 0x40 /* vnode is being used for swap */ 280 #define VSWAPLIKE 0x80 /* vnode acts like swap (but may not be) */ 281 282 #define IS_SWAPVP(vp) (((vp)->v_flag & (VISSWAP | VSWAPLIKE)) != 0) 283 284 typedef struct vn_vfslocks_entry { 285 rwstlock_t ve_lock; 286 void *ve_vpvfs; 287 struct vn_vfslocks_entry *ve_next; 288 uint32_t ve_refcnt; 289 char pad[64 - sizeof (rwstlock_t) - 2 * sizeof (void *) - \ 290 sizeof (uint32_t)]; 291 } vn_vfslocks_entry_t; 292 293 /* 294 * The following two flags are used to lock the v_vfsmountedhere field 295 */ 296 #define VVFSLOCK 0x100 297 #define VVFSWAIT 0x200 298 299 /* 300 * Used to serialize VM operations on a vnode 301 */ 302 #define VVMLOCK 0x400 303 304 /* 305 * Tell vn_open() not to fail a directory open for writing but 306 * to go ahead and call VOP_OPEN() to let the filesystem check. 307 */ 308 #define VDIROPEN 0x800 309 310 /* 311 * Flag to let the VM system know that this file is most likely a binary 312 * or shared library since it has been mmap()ed EXEC at some time. 313 */ 314 #define VVMEXEC 0x1000 315 316 #define VPXFS 0x2000 /* clustering: global fs proxy vnode */ 317 318 #define IS_PXFSVP(vp) ((vp)->v_flag & VPXFS) 319 320 #define V_XATTRDIR 0x4000 /* attribute unnamed directory */ 321 322 #define V_LOCALITY 0x8000 /* whether locality aware */ 323 324 /* 325 * Flag that indicates the VM should maintain the v_pages list with all modified 326 * pages on one end and unmodified pages at the other. This makes finding dirty 327 * pages to write back to disk much faster at the expense of taking a minor 328 * fault on the first store instruction which touches a writable page. 329 */ 330 #define VMODSORT (0x10000) 331 #define IS_VMODSORT(vp) \ 332 (pvn_vmodsort_supported != 0 && ((vp)->v_flag & VMODSORT) != 0) 333 334 #define VISSWAPFS 0x20000 /* vnode is being used for swapfs */ 335 #define IS_SWAPFSVP(vp) (((vp)->v_flag & VISSWAPFS) != 0) 336 337 /* 338 * Vnode attributes. A bit-mask is supplied as part of the 339 * structure to indicate the attributes the caller wants to 340 * set (setattr) or extract (getattr). 341 */ 342 343 /* 344 * Note that va_nodeid and va_nblocks are 64bit data type. 345 * We support large files over NFSV3. With Solaris client and 346 * Server that generates 64bit ino's and sizes these fields 347 * will overflow if they are 32 bit sizes. 348 */ 349 350 typedef struct vattr { 351 uint_t va_mask; /* bit-mask of attributes */ 352 vtype_t va_type; /* vnode type (for create) */ 353 mode_t va_mode; /* file access mode */ 354 uid_t va_uid; /* owner user id */ 355 gid_t va_gid; /* owner group id */ 356 dev_t va_fsid; /* file system id (dev for now) */ 357 u_longlong_t va_nodeid; /* node id */ 358 nlink_t va_nlink; /* number of references to file */ 359 u_offset_t va_size; /* file size in bytes */ 360 timestruc_t va_atime; /* time of last access */ 361 timestruc_t va_mtime; /* time of last modification */ 362 timestruc_t va_ctime; /* time of last status change */ 363 dev_t va_rdev; /* device the file represents */ 364 uint_t va_blksize; /* fundamental block size */ 365 u_longlong_t va_nblocks; /* # of blocks allocated */ 366 uint_t va_seq; /* sequence number */ 367 } vattr_t; 368 369 #ifdef _SYSCALL32 370 /* 371 * For bigtypes time_t changed to 64 bit on the 64-bit kernel. 372 * Define an old version for user/kernel interface 373 */ 374 375 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 376 #pragma pack(4) 377 #endif 378 379 typedef struct vattr32 { 380 uint32_t va_mask; /* bit-mask of attributes */ 381 vtype_t va_type; /* vnode type (for create) */ 382 mode32_t va_mode; /* file access mode */ 383 uid32_t va_uid; /* owner user id */ 384 gid32_t va_gid; /* owner group id */ 385 dev32_t va_fsid; /* file system id (dev for now) */ 386 u_longlong_t va_nodeid; /* node id */ 387 nlink_t va_nlink; /* number of references to file */ 388 u_offset_t va_size; /* file size in bytes */ 389 timestruc32_t va_atime; /* time of last access */ 390 timestruc32_t va_mtime; /* time of last modification */ 391 timestruc32_t va_ctime; /* time of last status change */ 392 dev32_t va_rdev; /* device the file represents */ 393 uint32_t va_blksize; /* fundamental block size */ 394 u_longlong_t va_nblocks; /* # of blocks allocated */ 395 uint32_t va_seq; /* sequence number */ 396 } vattr32_t; 397 398 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 399 #pragma pack() 400 #endif 401 402 #else /* not _SYSCALL32 */ 403 #define vattr32 vattr 404 typedef vattr_t vattr32_t; 405 #endif /* _SYSCALL32 */ 406 407 /* 408 * Attributes of interest to the caller of setattr or getattr. 409 */ 410 #define AT_TYPE 0x0001 411 #define AT_MODE 0x0002 412 #define AT_UID 0x0004 413 #define AT_GID 0x0008 414 #define AT_FSID 0x0010 415 #define AT_NODEID 0x0020 416 #define AT_NLINK 0x0040 417 #define AT_SIZE 0x0080 418 #define AT_ATIME 0x0100 419 #define AT_MTIME 0x0200 420 #define AT_CTIME 0x0400 421 #define AT_RDEV 0x0800 422 #define AT_BLKSIZE 0x1000 423 #define AT_NBLOCKS 0x2000 424 /* 0x4000 */ /* unused */ 425 #define AT_SEQ 0x8000 426 427 #define AT_ALL (AT_TYPE|AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|\ 428 AT_NLINK|AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|\ 429 AT_RDEV|AT_BLKSIZE|AT_NBLOCKS|AT_SEQ) 430 431 #define AT_STAT (AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|AT_NLINK|\ 432 AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|AT_RDEV|AT_TYPE) 433 434 #define AT_TIMES (AT_ATIME|AT_MTIME|AT_CTIME) 435 436 #define AT_NOSET (AT_NLINK|AT_RDEV|AT_FSID|AT_NODEID|AT_TYPE|\ 437 AT_BLKSIZE|AT_NBLOCKS|AT_SEQ) 438 439 /* 440 * Modes. Some values same as S_xxx entries from stat.h for convenience. 441 */ 442 #define VSUID 04000 /* set user id on execution */ 443 #define VSGID 02000 /* set group id on execution */ 444 #define VSVTX 01000 /* save swapped text even after use */ 445 446 /* 447 * Permissions. 448 */ 449 #define VREAD 00400 450 #define VWRITE 00200 451 #define VEXEC 00100 452 453 #define MODEMASK 07777 /* mode bits plus permission bits */ 454 #define PERMMASK 00777 /* permission bits */ 455 456 /* 457 * Check whether mandatory file locking is enabled. 458 */ 459 460 #define MANDMODE(mode) (((mode) & (VSGID|(VEXEC>>3))) == VSGID) 461 #define MANDLOCK(vp, mode) ((vp)->v_type == VREG && MANDMODE(mode)) 462 463 /* 464 * Flags for vnode operations. 465 */ 466 enum rm { RMFILE, RMDIRECTORY }; /* rm or rmdir (remove) */ 467 enum symfollow { NO_FOLLOW, FOLLOW }; /* follow symlinks (or not) */ 468 enum vcexcl { NONEXCL, EXCL }; /* (non)excl create */ 469 enum create { CRCREAT, CRMKNOD, CRMKDIR }; /* reason for create */ 470 471 typedef enum rm rm_t; 472 typedef enum symfollow symfollow_t; 473 typedef enum vcexcl vcexcl_t; 474 typedef enum create create_t; 475 476 /* Vnode Events - Used by VOP_VNEVENT */ 477 typedef enum vnevent { 478 VE_SUPPORT = 0, /* Query */ 479 VE_RENAME_SRC = 1, /* Rename, with vnode as source */ 480 VE_RENAME_DEST = 2, /* Rename, with vnode as target/destination */ 481 VE_REMOVE = 3, /* Remove of vnode's name */ 482 VE_RMDIR = 4, /* Remove of directory vnode's name */ 483 VE_CREATE = 5, /* Create with vnode's name which exists */ 484 VE_LINK = 6, /* Link with vnode's name as source */ 485 VE_RENAME_DEST_DIR = 7, /* Rename with vnode as target dir */ 486 VE_MOUNTEDOVER = 8 /* File or Filesystem got mounted over vnode */ 487 } vnevent_t; 488 489 /* 490 * Values for checking vnode open and map counts 491 */ 492 enum v_mode { V_READ, V_WRITE, V_RDORWR, V_RDANDWR }; 493 494 typedef enum v_mode v_mode_t; 495 496 #define V_TRUE 1 497 #define V_FALSE 0 498 499 /* 500 * Structure used on VOP_GETSECATTR and VOP_SETSECATTR operations 501 */ 502 503 typedef struct vsecattr { 504 uint_t vsa_mask; /* See below */ 505 int vsa_aclcnt; /* ACL entry count */ 506 void *vsa_aclentp; /* pointer to ACL entries */ 507 int vsa_dfaclcnt; /* default ACL entry count */ 508 void *vsa_dfaclentp; /* pointer to default ACL entries */ 509 } vsecattr_t; 510 511 /* vsa_mask values */ 512 #define VSA_ACL 0x0001 513 #define VSA_ACLCNT 0x0002 514 #define VSA_DFACL 0x0004 515 #define VSA_DFACLCNT 0x0008 516 #define VSA_ACE 0x0010 517 #define VSA_ACECNT 0x0020 518 519 /* 520 * Structure used by various vnode operations to determine 521 * the context (pid, host, identity) of a caller. 522 * 523 * The cc_caller_id is used to identify one or more callers who invoke 524 * operations, possibly on behalf of others. For example, the NFS 525 * server could have it's own cc_caller_id which can be detected by 526 * vnode/vfs operations or (FEM) monitors on those operations. New 527 * caller IDs are generated by fs_new_caller_id(). 528 */ 529 typedef struct caller_context { 530 pid_t cc_pid; /* Process ID of the caller */ 531 int cc_sysid; /* System ID, used for remote calls */ 532 u_longlong_t cc_caller_id; /* Identifier for (set of) caller(s) */ 533 } caller_context_t; 534 535 /* 536 * Structure tags for function prototypes, defined elsewhere. 537 */ 538 struct pathname; 539 struct fid; 540 struct flock64; 541 struct flk_callback; 542 struct shrlock; 543 struct page; 544 struct seg; 545 struct as; 546 struct pollhead; 547 548 #ifdef _KERNEL 549 550 /* 551 * VNODE_OPS defines all the vnode operations. It is used to define 552 * the vnodeops structure (below) and the fs_func_p union (vfs_opreg.h). 553 */ 554 #define VNODE_OPS \ 555 int (*vop_open)(vnode_t **, int, cred_t *); \ 556 int (*vop_close)(vnode_t *, int, int, offset_t, cred_t *); \ 557 int (*vop_read)(vnode_t *, uio_t *, int, cred_t *, \ 558 caller_context_t *); \ 559 int (*vop_write)(vnode_t *, uio_t *, int, cred_t *, \ 560 caller_context_t *); \ 561 int (*vop_ioctl)(vnode_t *, int, intptr_t, int, cred_t *, \ 562 int *); \ 563 int (*vop_setfl)(vnode_t *, int, int, cred_t *); \ 564 int (*vop_getattr)(vnode_t *, vattr_t *, int, cred_t *); \ 565 int (*vop_setattr)(vnode_t *, vattr_t *, int, cred_t *, \ 566 caller_context_t *); \ 567 int (*vop_access)(vnode_t *, int, int, cred_t *); \ 568 int (*vop_lookup)(vnode_t *, char *, vnode_t **, \ 569 struct pathname *, \ 570 int, vnode_t *, cred_t *); \ 571 int (*vop_create)(vnode_t *, char *, vattr_t *, vcexcl_t, \ 572 int, vnode_t **, cred_t *, int); \ 573 int (*vop_remove)(vnode_t *, char *, cred_t *); \ 574 int (*vop_link)(vnode_t *, vnode_t *, char *, cred_t *); \ 575 int (*vop_rename)(vnode_t *, char *, vnode_t *, char *, \ 576 cred_t *); \ 577 int (*vop_mkdir)(vnode_t *, char *, vattr_t *, vnode_t **, \ 578 cred_t *); \ 579 int (*vop_rmdir)(vnode_t *, char *, vnode_t *, cred_t *); \ 580 int (*vop_readdir)(vnode_t *, uio_t *, cred_t *, int *); \ 581 int (*vop_symlink)(vnode_t *, char *, vattr_t *, char *, \ 582 cred_t *); \ 583 int (*vop_readlink)(vnode_t *, uio_t *, cred_t *); \ 584 int (*vop_fsync)(vnode_t *, int, cred_t *); \ 585 void (*vop_inactive)(vnode_t *, cred_t *); \ 586 int (*vop_fid)(vnode_t *, struct fid *); \ 587 int (*vop_rwlock)(vnode_t *, int, caller_context_t *); \ 588 void (*vop_rwunlock)(vnode_t *, int, caller_context_t *); \ 589 int (*vop_seek)(vnode_t *, offset_t, offset_t *); \ 590 int (*vop_cmp)(vnode_t *, vnode_t *); \ 591 int (*vop_frlock)(vnode_t *, int, struct flock64 *, \ 592 int, offset_t, \ 593 struct flk_callback *, cred_t *); \ 594 int (*vop_space)(vnode_t *, int, struct flock64 *, \ 595 int, offset_t, \ 596 cred_t *, caller_context_t *); \ 597 int (*vop_realvp)(vnode_t *, vnode_t **); \ 598 int (*vop_getpage)(vnode_t *, offset_t, size_t, uint_t *, \ 599 struct page **, size_t, struct seg *, \ 600 caddr_t, enum seg_rw, cred_t *); \ 601 int (*vop_putpage)(vnode_t *, offset_t, size_t, \ 602 int, cred_t *); \ 603 int (*vop_map)(vnode_t *, offset_t, struct as *, \ 604 caddr_t *, size_t, \ 605 uchar_t, uchar_t, uint_t, cred_t *); \ 606 int (*vop_addmap)(vnode_t *, offset_t, struct as *, \ 607 caddr_t, size_t, \ 608 uchar_t, uchar_t, uint_t, cred_t *); \ 609 int (*vop_delmap)(vnode_t *, offset_t, struct as *, \ 610 caddr_t, size_t, \ 611 uint_t, uint_t, uint_t, cred_t *); \ 612 int (*vop_poll)(vnode_t *, short, int, short *, \ 613 struct pollhead **); \ 614 int (*vop_dump)(vnode_t *, caddr_t, int, int); \ 615 int (*vop_pathconf)(vnode_t *, int, ulong_t *, cred_t *); \ 616 int (*vop_pageio)(vnode_t *, struct page *, \ 617 u_offset_t, size_t, int, cred_t *); \ 618 int (*vop_dumpctl)(vnode_t *, int, int *); \ 619 void (*vop_dispose)(vnode_t *, struct page *, \ 620 int, int, cred_t *); \ 621 int (*vop_setsecattr)(vnode_t *, vsecattr_t *, \ 622 int, cred_t *); \ 623 int (*vop_getsecattr)(vnode_t *, vsecattr_t *, \ 624 int, cred_t *); \ 625 int (*vop_shrlock)(vnode_t *, int, struct shrlock *, \ 626 int, cred_t *); \ 627 int (*vop_vnevent)(vnode_t *, vnevent_t, vnode_t *, char *) \ 628 /* NB: No ";" */ 629 630 /* 631 * Operations on vnodes. Note: File systems must never operate directly 632 * on a 'vnodeops' structure -- it WILL change in future releases! They 633 * must use vn_make_ops() to create the structure. 634 */ 635 typedef struct vnodeops { 636 const char *vnop_name; 637 VNODE_OPS; /* Signatures of all vnode operations (vops) */ 638 } vnodeops_t; 639 640 typedef int (*fs_generic_func_p) (); /* Generic vop/vfsop/femop/fsemop ptr */ 641 642 extern int fop_open(vnode_t **, int, cred_t *); 643 extern int fop_close(vnode_t *, int, int, offset_t, cred_t *); 644 extern int fop_read(vnode_t *, uio_t *, int, cred_t *, caller_context_t *); 645 extern int fop_write(vnode_t *, uio_t *, int, cred_t *, 646 caller_context_t *); 647 extern int fop_ioctl(vnode_t *, int, intptr_t, int, cred_t *, int *); 648 extern int fop_setfl(vnode_t *, int, int, cred_t *); 649 extern int fop_getattr(vnode_t *, vattr_t *, int, cred_t *); 650 extern int fop_setattr(vnode_t *, vattr_t *, int, cred_t *, 651 caller_context_t *); 652 extern int fop_access(vnode_t *, int, int, cred_t *); 653 extern int fop_lookup(vnode_t *, char *, vnode_t **, struct pathname *, 654 int, vnode_t *, cred_t *); 655 extern int fop_create(vnode_t *, char *, vattr_t *, vcexcl_t, int, 656 vnode_t **, cred_t *, int); 657 extern int fop_remove(vnode_t *vp, char *, cred_t *); 658 extern int fop_link(vnode_t *, vnode_t *, char *, cred_t *); 659 extern int fop_rename(vnode_t *, char *, vnode_t *, char *, cred_t *); 660 extern int fop_mkdir(vnode_t *, char *, vattr_t *, vnode_t **, cred_t *); 661 extern int fop_rmdir(vnode_t *, char *, vnode_t *, cred_t *); 662 extern int fop_readdir(vnode_t *, uio_t *, cred_t *, int *); 663 extern int fop_symlink(vnode_t *, char *, vattr_t *, char *, cred_t *); 664 extern int fop_readlink(vnode_t *, uio_t *, cred_t *); 665 extern int fop_fsync(vnode_t *, int, cred_t *); 666 extern void fop_inactive(vnode_t *, cred_t *); 667 extern int fop_fid(vnode_t *, struct fid *); 668 extern int fop_rwlock(vnode_t *, int, caller_context_t *); 669 extern void fop_rwunlock(vnode_t *, int, caller_context_t *); 670 extern int fop_seek(vnode_t *, offset_t, offset_t *); 671 extern int fop_cmp(vnode_t *, vnode_t *); 672 extern int fop_frlock(vnode_t *, int, struct flock64 *, int, offset_t, 673 struct flk_callback *, cred_t *); 674 extern int fop_space(vnode_t *, int, struct flock64 *, int, offset_t, 675 cred_t *, caller_context_t *); 676 extern int fop_realvp(vnode_t *, vnode_t **); 677 extern int fop_getpage(vnode_t *, offset_t, size_t, uint_t *, 678 struct page **, size_t, struct seg *, 679 caddr_t, enum seg_rw, cred_t *); 680 extern int fop_putpage(vnode_t *, offset_t, size_t, int, cred_t *); 681 extern int fop_map(vnode_t *, offset_t, struct as *, caddr_t *, size_t, 682 uchar_t, uchar_t, uint_t, cred_t *cr); 683 extern int fop_addmap(vnode_t *, offset_t, struct as *, caddr_t, size_t, 684 uchar_t, uchar_t, uint_t, cred_t *); 685 extern int fop_delmap(vnode_t *, offset_t, struct as *, caddr_t, size_t, 686 uint_t, uint_t, uint_t, cred_t *); 687 extern int fop_poll(vnode_t *, short, int, short *, struct pollhead **); 688 extern int fop_dump(vnode_t *, caddr_t, int, int); 689 extern int fop_pathconf(vnode_t *, int, ulong_t *, cred_t *); 690 extern int fop_pageio(vnode_t *, struct page *, u_offset_t, size_t, int, 691 cred_t *); 692 extern int fop_dumpctl(vnode_t *, int, int *); 693 extern void fop_dispose(vnode_t *, struct page *, int, int, cred_t *); 694 extern int fop_setsecattr(vnode_t *, vsecattr_t *, int, cred_t *); 695 extern int fop_getsecattr(vnode_t *, vsecattr_t *, int, cred_t *); 696 extern int fop_shrlock(vnode_t *, int, struct shrlock *, int, cred_t *); 697 extern int fop_vnevent(vnode_t *, vnevent_t, vnode_t *, char *); 698 699 #endif /* _KERNEL */ 700 701 #define VOP_OPEN(vpp, mode, cr) \ 702 fop_open(vpp, mode, cr) 703 #define VOP_CLOSE(vp, f, c, o, cr) \ 704 fop_close(vp, f, c, o, cr) 705 #define VOP_READ(vp, uiop, iof, cr, ct) \ 706 fop_read(vp, uiop, iof, cr, ct) 707 #define VOP_WRITE(vp, uiop, iof, cr, ct) \ 708 fop_write(vp, uiop, iof, cr, ct) 709 #define VOP_IOCTL(vp, cmd, a, f, cr, rvp) \ 710 fop_ioctl(vp, cmd, a, f, cr, rvp) 711 #define VOP_SETFL(vp, f, a, cr) \ 712 fop_setfl(vp, f, a, cr) 713 #define VOP_GETATTR(vp, vap, f, cr) \ 714 fop_getattr(vp, vap, f, cr) 715 #define VOP_SETATTR(vp, vap, f, cr, ct) \ 716 fop_setattr(vp, vap, f, cr, ct) 717 #define VOP_ACCESS(vp, mode, f, cr) \ 718 fop_access(vp, mode, f, cr) 719 #define VOP_LOOKUP(vp, cp, vpp, pnp, f, rdir, cr) \ 720 fop_lookup(vp, cp, vpp, pnp, f, rdir, cr) 721 #define VOP_CREATE(dvp, p, vap, ex, mode, vpp, cr, flag) \ 722 fop_create(dvp, p, vap, ex, mode, vpp, cr, flag) 723 #define VOP_REMOVE(dvp, p, cr) \ 724 fop_remove(dvp, p, cr) 725 #define VOP_LINK(tdvp, fvp, p, cr) \ 726 fop_link(tdvp, fvp, p, cr) 727 #define VOP_RENAME(fvp, fnm, tdvp, tnm, cr) \ 728 fop_rename(fvp, fnm, tdvp, tnm, cr) 729 #define VOP_MKDIR(dp, p, vap, vpp, cr) \ 730 fop_mkdir(dp, p, vap, vpp, cr) 731 #define VOP_RMDIR(dp, p, cdir, cr) \ 732 fop_rmdir(dp, p, cdir, cr) 733 #define VOP_READDIR(vp, uiop, cr, eofp) \ 734 fop_readdir(vp, uiop, cr, eofp) 735 #define VOP_SYMLINK(dvp, lnm, vap, tnm, cr) \ 736 fop_symlink(dvp, lnm, vap, tnm, cr) 737 #define VOP_READLINK(vp, uiop, cr) \ 738 fop_readlink(vp, uiop, cr) 739 #define VOP_FSYNC(vp, syncflag, cr) \ 740 fop_fsync(vp, syncflag, cr) 741 #define VOP_INACTIVE(vp, cr) \ 742 fop_inactive(vp, cr) 743 #define VOP_FID(vp, fidp) \ 744 fop_fid(vp, fidp) 745 #define VOP_RWLOCK(vp, w, ct) \ 746 fop_rwlock(vp, w, ct) 747 #define VOP_RWUNLOCK(vp, w, ct) \ 748 fop_rwunlock(vp, w, ct) 749 #define VOP_SEEK(vp, ooff, noffp) \ 750 fop_seek(vp, ooff, noffp) 751 #define VOP_CMP(vp1, vp2) \ 752 fop_cmp(vp1, vp2) 753 #define VOP_FRLOCK(vp, cmd, a, f, o, cb, cr) \ 754 fop_frlock(vp, cmd, a, f, o, cb, cr) 755 #define VOP_SPACE(vp, cmd, a, f, o, cr, ct) \ 756 fop_space(vp, cmd, a, f, o, cr, ct) 757 #define VOP_REALVP(vp1, vp2) \ 758 fop_realvp(vp1, vp2) 759 #define VOP_GETPAGE(vp, of, sz, pr, pl, ps, sg, a, rw, cr) \ 760 fop_getpage(vp, of, sz, pr, pl, ps, sg, a, rw, cr) 761 #define VOP_PUTPAGE(vp, of, sz, fl, cr) \ 762 fop_putpage(vp, of, sz, fl, cr) 763 #define VOP_MAP(vp, of, as, a, sz, p, mp, fl, cr) \ 764 fop_map(vp, of, as, a, sz, p, mp, fl, cr) 765 #define VOP_ADDMAP(vp, of, as, a, sz, p, mp, fl, cr) \ 766 fop_addmap(vp, of, as, a, sz, p, mp, fl, cr) 767 #define VOP_DELMAP(vp, of, as, a, sz, p, mp, fl, cr) \ 768 fop_delmap(vp, of, as, a, sz, p, mp, fl, cr) 769 #define VOP_POLL(vp, events, anyyet, reventsp, phpp) \ 770 fop_poll(vp, events, anyyet, reventsp, phpp) 771 #define VOP_DUMP(vp, addr, bn, count) \ 772 fop_dump(vp, addr, bn, count) 773 #define VOP_PATHCONF(vp, cmd, valp, cr) \ 774 fop_pathconf(vp, cmd, valp, cr) 775 #define VOP_PAGEIO(vp, pp, io_off, io_len, flags, cr) \ 776 fop_pageio(vp, pp, io_off, io_len, flags, cr) 777 #define VOP_DUMPCTL(vp, action, blkp) \ 778 fop_dumpctl(vp, action, blkp) 779 #define VOP_DISPOSE(vp, pp, flag, dn, cr) \ 780 fop_dispose(vp, pp, flag, dn, cr) 781 #define VOP_GETSECATTR(vp, vsap, f, cr) \ 782 fop_getsecattr(vp, vsap, f, cr) 783 #define VOP_SETSECATTR(vp, vsap, f, cr) \ 784 fop_setsecattr(vp, vsap, f, cr) 785 #define VOP_SHRLOCK(vp, cmd, shr, f, cr) \ 786 fop_shrlock(vp, cmd, shr, f, cr) 787 #define VOP_VNEVENT(vp, vnevent, dvp, fnm) \ 788 fop_vnevent(vp, vnevent, dvp, fnm) 789 790 #define VOPNAME_OPEN "open" 791 #define VOPNAME_CLOSE "close" 792 #define VOPNAME_READ "read" 793 #define VOPNAME_WRITE "write" 794 #define VOPNAME_IOCTL "ioctl" 795 #define VOPNAME_SETFL "setfl" 796 #define VOPNAME_GETATTR "getattr" 797 #define VOPNAME_SETATTR "setattr" 798 #define VOPNAME_ACCESS "access" 799 #define VOPNAME_LOOKUP "lookup" 800 #define VOPNAME_CREATE "create" 801 #define VOPNAME_REMOVE "remove" 802 #define VOPNAME_LINK "link" 803 #define VOPNAME_RENAME "rename" 804 #define VOPNAME_MKDIR "mkdir" 805 #define VOPNAME_RMDIR "rmdir" 806 #define VOPNAME_READDIR "readdir" 807 #define VOPNAME_SYMLINK "symlink" 808 #define VOPNAME_READLINK "readlink" 809 #define VOPNAME_FSYNC "fsync" 810 #define VOPNAME_INACTIVE "inactive" 811 #define VOPNAME_FID "fid" 812 #define VOPNAME_RWLOCK "rwlock" 813 #define VOPNAME_RWUNLOCK "rwunlock" 814 #define VOPNAME_SEEK "seek" 815 #define VOPNAME_CMP "cmp" 816 #define VOPNAME_FRLOCK "frlock" 817 #define VOPNAME_SPACE "space" 818 #define VOPNAME_REALVP "realvp" 819 #define VOPNAME_GETPAGE "getpage" 820 #define VOPNAME_PUTPAGE "putpage" 821 #define VOPNAME_MAP "map" 822 #define VOPNAME_ADDMAP "addmap" 823 #define VOPNAME_DELMAP "delmap" 824 #define VOPNAME_POLL "poll" 825 #define VOPNAME_DUMP "dump" 826 #define VOPNAME_PATHCONF "pathconf" 827 #define VOPNAME_PAGEIO "pageio" 828 #define VOPNAME_DUMPCTL "dumpctl" 829 #define VOPNAME_DISPOSE "dispose" 830 #define VOPNAME_GETSECATTR "getsecattr" 831 #define VOPNAME_SETSECATTR "setsecattr" 832 #define VOPNAME_SHRLOCK "shrlock" 833 #define VOPNAME_VNEVENT "vnevent" 834 835 /* 836 * Flags for VOP_LOOKUP 837 */ 838 #define LOOKUP_DIR 0x01 /* want parent dir vp */ 839 #define LOOKUP_XATTR 0x02 /* lookup up extended attr dir */ 840 #define CREATE_XATTR_DIR 0x04 /* Create extended attr dir */ 841 842 /* 843 * Flags for VOP_RWLOCK/VOP_RWUNLOCK 844 * VOP_RWLOCK will return the flag that was actually set, or -1 if none. 845 */ 846 #define V_WRITELOCK_TRUE (1) /* Request write-lock on the vnode */ 847 #define V_WRITELOCK_FALSE (0) /* Request read-lock on the vnode */ 848 849 /* 850 * Flags for VOP_DUMPCTL 851 */ 852 #define DUMP_ALLOC 0 853 #define DUMP_FREE 1 854 #define DUMP_SCAN 2 855 856 /* 857 * Public vnode manipulation functions. 858 */ 859 #ifdef _KERNEL 860 861 vnode_t *vn_alloc(int); 862 void vn_reinit(vnode_t *); 863 void vn_recycle(vnode_t *); 864 void vn_free(vnode_t *); 865 866 int vn_is_readonly(vnode_t *); 867 int vn_is_opened(vnode_t *, v_mode_t); 868 int vn_is_mapped(vnode_t *, v_mode_t); 869 870 int vn_can_change_zones(vnode_t *vp); 871 872 int vn_has_flocks(vnode_t *); 873 int vn_has_mandatory_locks(vnode_t *, int); 874 int vn_has_cached_data(vnode_t *); 875 876 void vn_setops(vnode_t *, vnodeops_t *); 877 vnodeops_t *vn_getops(vnode_t *); 878 int vn_matchops(vnode_t *, vnodeops_t *); 879 int vn_matchopval(vnode_t *, char *, fs_generic_func_p); 880 int vn_ismntpt(vnode_t *); 881 882 struct vfs *vn_mountedvfs(vnode_t *); 883 884 void vn_create_cache(void); 885 void vn_destroy_cache(void); 886 887 void vn_freevnodeops(vnodeops_t *); 888 889 int vn_open(char *pnamep, enum uio_seg seg, int filemode, int createmode, 890 struct vnode **vpp, enum create crwhy, mode_t umask); 891 int vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode, 892 struct vnode **vpp, enum create crwhy, 893 mode_t umask, struct vnode *startvp); 894 int vn_create(char *pnamep, enum uio_seg seg, struct vattr *vap, 895 enum vcexcl excl, int mode, struct vnode **vpp, 896 enum create why, int flag, mode_t umask); 897 int vn_createat(char *pnamep, enum uio_seg seg, struct vattr *vap, 898 enum vcexcl excl, int mode, struct vnode **vpp, 899 enum create why, int flag, mode_t umask, struct vnode *startvp); 900 int vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base, ssize_t len, 901 offset_t offset, enum uio_seg seg, int ioflag, rlim64_t ulimit, 902 cred_t *cr, ssize_t *residp); 903 void vn_rele(struct vnode *vp); 904 void vn_rele_stream(struct vnode *vp); 905 int vn_link(char *from, char *to, enum uio_seg seg); 906 int vn_rename(char *from, char *to, enum uio_seg seg); 907 int vn_renameat(vnode_t *fdvp, char *fname, vnode_t *tdvp, char *tname, 908 enum uio_seg seg); 909 int vn_remove(char *fnamep, enum uio_seg seg, enum rm dirflag); 910 int vn_removeat(vnode_t *startvp, char *fnamep, enum uio_seg seg, 911 enum rm dirflag); 912 int vn_compare(vnode_t *vp1, vnode_t *vp2); 913 int vn_vfswlock(struct vnode *vp); 914 int vn_vfswlock_wait(struct vnode *vp); 915 int vn_vfsrlock(struct vnode *vp); 916 int vn_vfsrlock_wait(struct vnode *vp); 917 void vn_vfsunlock(struct vnode *vp); 918 int vn_vfswlock_held(struct vnode *vp); 919 vnode_t *specvp(struct vnode *vp, dev_t dev, vtype_t type, struct cred *cr); 920 vnode_t *makespecvp(dev_t dev, vtype_t type); 921 vn_vfslocks_entry_t *vn_vfslocks_getlock(void *); 922 void vn_vfslocks_rele(vn_vfslocks_entry_t *); 923 924 void vn_copypath(struct vnode *src, struct vnode *dst); 925 void vn_setpath_str(struct vnode *vp, const char *str, size_t len); 926 void vn_setpath(vnode_t *rootvp, struct vnode *startvp, struct vnode *vp, 927 const char *path, size_t plen); 928 929 /* Vnode event notification */ 930 void vnevent_rename_src(vnode_t *, vnode_t *, char *); 931 void vnevent_rename_dest(vnode_t *, vnode_t *, char *); 932 void vnevent_remove(vnode_t *, vnode_t *, char *); 933 void vnevent_rmdir(vnode_t *, vnode_t *, char *); 934 void vnevent_create(vnode_t *); 935 void vnevent_link(vnode_t *); 936 void vnevent_rename_dest_dir(vnode_t *); 937 void vnevent_mountedover(vnode_t *); 938 int vnevent_support(vnode_t *); 939 940 /* Vnode specific data */ 941 void vsd_create(uint_t *, void (*)(void *)); 942 void vsd_destroy(uint_t *); 943 void *vsd_get(vnode_t *, uint_t); 944 int vsd_set(vnode_t *, uint_t, void *); 945 void vsd_free(vnode_t *); 946 947 /* Context identification */ 948 u_longlong_t fs_new_caller_id(); 949 950 int vn_vmpss_usepageio(vnode_t *); 951 952 /* 953 * Needed for use of IS_VMODSORT() in kernel. 954 */ 955 extern uint_t pvn_vmodsort_supported; 956 957 #define VN_HOLD(vp) { \ 958 mutex_enter(&(vp)->v_lock); \ 959 (vp)->v_count++; \ 960 mutex_exit(&(vp)->v_lock); \ 961 } 962 963 #define VN_RELE(vp) { \ 964 vn_rele(vp); \ 965 } 966 967 #define VN_SET_VFS_TYPE_DEV(vp, vfsp, type, dev) { \ 968 (vp)->v_vfsp = (vfsp); \ 969 (vp)->v_type = (type); \ 970 (vp)->v_rdev = (dev); \ 971 } 972 973 /* 974 * Compare two vnodes for equality. In general this macro should be used 975 * in preference to calling VOP_CMP directly. 976 */ 977 #define VN_CMP(VP1, VP2) ((VP1) == (VP2) ? 1 : \ 978 ((VP1) && (VP2) && (vn_getops(VP1) == vn_getops(VP2)) ? \ 979 VOP_CMP(VP1, VP2) : 0)) 980 981 extern struct vnode kvp; 982 extern struct vnode zvp; 983 984 #define VN_ISKAS(vp) ((vp) == &kvp || (vp) == &zvp) 985 986 #endif /* _KERNEL */ 987 988 /* 989 * Flags to VOP_SETATTR/VOP_GETATTR. 990 */ 991 #define ATTR_UTIME 0x01 /* non-default utime(2) request */ 992 #define ATTR_EXEC 0x02 /* invocation from exec(2) */ 993 #define ATTR_COMM 0x04 /* yield common vp attributes */ 994 #define ATTR_HINT 0x08 /* information returned will be `hint' */ 995 #define ATTR_REAL 0x10 /* yield attributes of the real vp */ 996 #define ATTR_TRIGGER 0x40 /* Mount first if vnode is a trigger mount */ 997 998 /* 999 * Generally useful macros. 1000 */ 1001 #define VBSIZE(vp) ((vp)->v_vfsp->vfs_bsize) 1002 1003 #define VTOZONE(vp) ((vp)->v_vfsp->vfs_zone) 1004 1005 #define NULLVP ((struct vnode *)0) 1006 #define NULLVPP ((struct vnode **)0) 1007 1008 #ifdef _KERNEL 1009 1010 /* 1011 * Structure used while handling asynchronous VOP_PUTPAGE operations. 1012 */ 1013 struct async_reqs { 1014 struct async_reqs *a_next; /* pointer to next arg struct */ 1015 struct vnode *a_vp; /* vnode pointer */ 1016 u_offset_t a_off; /* offset in file */ 1017 uint_t a_len; /* size of i/o request */ 1018 int a_flags; /* flags to indicate operation type */ 1019 struct cred *a_cred; /* cred pointer */ 1020 ushort_t a_prealloced; /* set if struct is pre-allocated */ 1021 }; 1022 1023 /* 1024 * VN_DISPOSE() -- given a page pointer, safely invoke VOP_DISPOSE(). 1025 */ 1026 #define VN_DISPOSE(pp, flag, dn, cr) { \ 1027 extern struct vnode kvp; \ 1028 if ((pp)->p_vnode != NULL && !VN_ISKAS((pp)->p_vnode)) \ 1029 VOP_DISPOSE((pp)->p_vnode, (pp), (flag), (dn), (cr)); \ 1030 else if ((flag) == B_FREE) \ 1031 page_free((pp), (dn)); \ 1032 else \ 1033 page_destroy((pp), (dn)); \ 1034 } 1035 1036 #endif /* _KERNEL */ 1037 1038 #ifdef __cplusplus 1039 } 1040 #endif 1041 1042 #endif /* _SYS_VNODE_H */ 1043