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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 | /* * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)vnode.h 8.17 (Berkeley) 5/20/95 */ /* * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce * support for mandatory and extensible security protections. This notice * is included in support of clause 2.2 (b) of the Apple Public License, * Version 2.0. */ #ifndef _SYS_VNODE_INTERNAL_H_ #define _SYS_VNODE_INTERNAL_H_ #include <sys/appleapiopts.h> #include <sys/cdefs.h> #include <sys/queue.h> #include <sys/lock.h> #include <sys/time.h> #include <sys/uio.h> #include <sys/vm.h> #include <sys/systm.h> #include <kern/locks.h> #include <vm/vm_kern.h> #include <sys/vnode.h> #include <sys/namei.h> #include <sys/vfs_context.h> #include <sys/sysctl.h> struct lockf; struct label; LIST_HEAD(buflists, buf); #if CONFIG_TRIGGERS /* * VFS Internal (private) trigger vnode resolver info. */ struct vnode_resolve { lck_mtx_t vr_lock; /* protects vnode_resolve_t fields */ trigger_vnode_resolve_callback_t vr_resolve_func; trigger_vnode_unresolve_callback_t vr_unresolve_func; trigger_vnode_rearm_callback_t vr_rearm_func; trigger_vnode_reclaim_callback_t vr_reclaim_func; void * vr_data; /* private data for resolver */ uint32_t vr_flags; uint32_t vr_lastseq; }; typedef struct vnode_resolve *vnode_resolve_t; /* private vr_flags */ #define VNT_RESOLVED (1UL << 31) #define VNT_VFS_UNMOUNTED (1UL << 30) #define VNT_EXTERNAL (1UL << 29) #endif /* CONFIG_TRIGGERS */ /* * Reading or writing any of these items requires holding the appropriate lock. * v_freelist is locked by the global vnode_list_lock * v_mntvnodes is locked by the mount_lock * v_nclinks and v_ncchildren are protected by the global name_cache_lock * v_cleanblkhd and v_dirtyblkhd and v_iterblkflags are locked via the global buf_mtx * the rest of the structure is protected by the vnode_lock */ struct vnode { lck_mtx_t v_lock; /* vnode mutex */ TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ TAILQ_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ TAILQ_HEAD(, namecache) v_ncchildren; /* name cache entries that regard us as their parent */ LIST_HEAD(, namecache) v_nclinks; /* name cache entries that name this vnode */ vnode_t v_defer_reclaimlist; /* in case we have to defer the reclaim to avoid recursion */ uint32_t v_listflag; /* flags protected by the vnode_list_lock (see below) */ uint32_t v_flag; /* vnode flags (see below) */ uint16_t v_lflag; /* vnode local and named ref flags */ uint8_t v_iterblkflags; /* buf iterator flags */ uint8_t v_references; /* number of times io_count has been granted */ int32_t v_kusecount; /* count of in-kernel refs */ int32_t v_usecount; /* reference count of users */ int32_t v_iocount; /* iocounters */ void * XNU_PTRAUTH_SIGNED_PTR("vnode.v_owner") v_owner; /* act that owns the vnode */ uint16_t v_type; /* vnode type */ uint16_t v_tag; /* type of underlying data */ uint32_t v_id; /* identity of vnode contents */ union { struct mount * XNU_PTRAUTH_SIGNED_PTR("vnode.v_data") vu_mountedhere; /* ptr to mounted vfs (VDIR) */ struct socket * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_socket") vu_socket; /* unix ipc (VSOCK) */ struct specinfo * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_specinfo") vu_specinfo; /* device (VCHR, VBLK) */ struct fifoinfo * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_fifoinfo") vu_fifoinfo; /* fifo (VFIFO) */ struct ubc_info * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_ubcinfo") vu_ubcinfo; /* valid for (VREG) */ } v_un; struct buflists v_cleanblkhd; /* clean blocklist head */ struct buflists v_dirtyblkhd; /* dirty blocklist head */ struct klist v_knotes; /* knotes attached to this vnode */ /* * the following 4 fields are protected * by the name_cache_lock held in * excluive mode */ kauth_cred_t XNU_PTRAUTH_SIGNED_PTR("vnode.v_cred") v_cred; /* last authorized credential */ kauth_action_t v_authorized_actions; /* current authorized actions for v_cred */ int v_cred_timestamp; /* determine if entry is stale for MNTK_AUTH_OPAQUE */ int v_nc_generation; /* changes when nodes are removed from the name cache */ /* * back to the vnode lock for protection */ int32_t v_numoutput; /* num of writes in progress */ int32_t v_writecount; /* reference count of writers */ const char *v_name; /* name component of the vnode */ vnode_t XNU_PTRAUTH_SIGNED_PTR("vnode.v_parent") v_parent; /* pointer to parent vnode */ struct lockf *v_lockf; /* advisory lock list head */ int(**v_op)(void *); /* vnode operations vector */ mount_t XNU_PTRAUTH_SIGNED_PTR("vnode.v_mount") v_mount; /* ptr to vfs we are in */ void * v_data; /* private data for fs */ #if CONFIG_MACF struct label *v_label; /* MAC security label */ #endif #if CONFIG_TRIGGERS vnode_resolve_t v_resolve; /* trigger vnode resolve info (VDIR only) */ #endif /* CONFIG_TRIGGERS */ #if CONFIG_FIRMLINKS vnode_t v_fmlink; /* firmlink if set (VDIR only), Points to source * if VFLINKTARGET is set, if VFLINKTARGET is not * set, points to target */ #endif /* CONFIG_FIRMLINKS */ #if CONFIG_IO_COMPRESSION_STATS io_compression_stats_t io_compression_stats; /* IO compression statistics */ #endif /* CONFIG_IO_COMPRESSION_STATS */ }; #define v_mountedhere v_un.vu_mountedhere #define v_socket v_un.vu_socket #define v_specinfo v_un.vu_specinfo #define v_fifoinfo v_un.vu_fifoinfo #define v_ubcinfo v_un.vu_ubcinfo /* * v_iterblkflags */ #define VBI_ITER 0x1 #define VBI_ITERWANT 0x2 #define VBI_CLEAN 0x4 #define VBI_DIRTY 0x8 #define VBI_NEWBUF 0x10 /* * v_listflag */ #define VLIST_RAGE 0x01 /* vnode is currently in the rapid age list */ #define VLIST_DEAD 0x02 /* vnode is currently in the dead list */ #define VLIST_ASYNC_WORK 0x04 /* vnode is currently on the deferred async work queue */ /* * v_lflags */ #define VL_SUSPENDED 0x0001 /* vnode is suspended */ #define VL_DRAIN 0x0002 /* vnode is being drained */ #define VL_TERMINATE 0x0004 /* vnode is in the process of being recycled */ #define VL_TERMWANT 0x0008 /* there's a waiter for recycle finish (vnode_getiocount)*/ #define VL_DEAD 0x0010 /* vnode is dead, cleaned of filesystem-specific info */ #define VL_MARKTERM 0x0020 /* vnode should be recycled when no longer referenced */ #define VL_NEEDINACTIVE 0x0080 /* delay VNOP_INACTIVE until iocount goes to 0 */ #define VL_LABEL 0x0100 /* vnode is marked for labeling */ #define VL_LABELWAIT 0x0200 /* vnode is marked for labeling */ #define VL_LABELED 0x0400 /* vnode is labeled */ #define VL_LWARNED 0x0800 #define VL_HASSTREAMS 0x1000 /* vnode has had at least one associated named stream vnode (may not have one any longer) */ #define VNAMED_UBC 0x2000 /* ubc named reference */ #define VNAMED_MOUNT 0x4000 /* mount point named reference */ #define VNAMED_FSHASH 0x8000 /* FS hash named reference */ /* * v_flags */ #define VROOT 0x000001 /* root of its file system */ #define VTEXT 0x000002 /* vnode is a pure text prototype */ #define VSYSTEM 0x000004 /* vnode being used by kernel */ #define VISTTY 0x000008 /* vnode represents a tty */ #define VRAGE 0x000010 /* vnode is in rapid age state */ #define VBDEVVP 0x000020 /* vnode created by bdevvp */ #define VDEVFLUSH 0x000040 /* device vnode after vflush */ #define VMOUNT 0x000080 /* mount operation in progress */ #define VBWAIT 0x000100 /* waiting for output to complete */ #define VSHARED_DYLD 0x000200 /* vnode is a dyld shared cache file */ #define VNOCACHE_DATA 0x000400 /* don't keep data cached once it's been consumed */ #define VSTANDARD 0x000800 /* vnode obtained from common pool */ #define VAGE 0x001000 /* Insert vnode at head of free list */ #define VRAOFF 0x002000 /* read ahead disabled */ #define VNCACHEABLE 0x004000 /* vnode is allowed to be put back in name cache */ #if NAMEDSTREAMS #define VISSHADOW 0x008000 /* vnode is a shadow file */ #endif #define VSWAP 0x010000 /* vnode is being used as swapfile */ #define VTHROTTLED 0x020000 /* writes or pageouts have been throttled */ /* wakeup tasks waiting when count falls below threshold */ #define VNOFLUSH 0x040000 /* don't vflush() if SKIPSYSTEM */ #define VLOCKLOCAL 0x080000 /* this vnode does adv locking in vfs */ #define VISHARDLINK 0x100000 /* hard link needs special processing on lookup and in volfs */ #define VISUNION 0x200000 /* union special processing */ #define VISNAMEDSTREAM 0x400000 /* vnode is a named stream (eg HFS resource fork) */ #define VOPENEVT 0x800000 /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */ #define VNEEDSSNAPSHOT 0x1000000 #define VNOCS 0x2000000 /* is there no code signature available */ #define VISDIRTY 0x4000000 /* vnode will need IO if reclaimed */ #define VFASTDEVCANDIDATE 0x8000000 /* vnode is a candidate to store on a fast device */ #define VAUTOCANDIDATE 0x10000000 /* vnode was automatically marked as a fast-dev candidate */ #define VFMLINKTARGET 0x20000000 /* vnode is firmlink target */ /* * 0x40000000 not used * 0x80000000 not used. */ /* * This structure describes vnode data which is specific to a file descriptor. * It is currently used only for file descriptors which are for opened for * directories. */ struct fd_vn_data { lck_mtx_t fv_lock; /* Used to serialize directory enumeration on fd */ off_t fv_offset; /* Offset to be used */ void *fv_dircookie; /* If FS doesn't like offsets in directories */ caddr_t fv_buf; /* Temporary buffer to store directory entries */ size_t fv_bufsiz; /* Valid size of fv_buf */ size_t fv_bufdone; /* How much of fv_buf is processed */ size_t fv_bufallocsiz; /* Allocation size determined for Buffer*/ off_t fv_soff; /* Starting FS offset for this buffer */ off_t fv_eoff; /* Ending FS offset for this buffer */ int fv_eofflag;/* Does fv_eoff represent EOF ? */ }; /* * FV_DIRBUF_START_SIZ is the initial size of the buffer passed to VNOP_READDIR. * That may not be enough for some filesytems so the current algorithm works its * way upto FV_DIRBUF_MAX_SIZ */ #define FV_DIRBUF_DIRENTRY_SIZ (sizeof(struct direntry)) #define FV_DIRBUF_START_SIZ FV_DIRBUF_DIRENTRY_SIZ #define FV_DIRBUF_MAX_SIZ (4*(sizeof(struct direntry))) #define FV_LOCK(fvd) lck_mtx_lock(&(((struct fd_vn_data *)fvd)->fv_lock)) #define FV_UNLOCK(fvd) lck_mtx_unlock(&(((struct fd_vn_data *)fvd)->fv_lock)) /* * Global vnode data. */ extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ #ifdef CONFIG_IMGSRC_ACCESS #define MAX_IMAGEBOOT_NESTING 2 extern struct vnode *imgsrc_rootvnodes[]; #endif /* CONFIG_IMGSRC_ACCESS */ /* * Mods for exensibility. */ /* * Flags for vdesc_flags: */ #define VDESC_MAX_VPS 16 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ #define VDESC_VP0_WILLRELE 0x00001 #define VDESC_VP1_WILLRELE 0x00002 #define VDESC_VP2_WILLRELE 0x00004 #define VDESC_VP3_WILLRELE 0x00008 #define VDESC_NOMAP_VPP 0x00100 #define VDESC_VPP_WILLRELE 0x00200 #define VDESC_DISABLED 0x10000 /* descriptor defined but op is unused, has no op slot */ /* * VDESC_NO_OFFSET is used to identify the end of the offset list * and in places where no such field exists. */ #define VDESC_NO_OFFSET -1 /* * This structure describes the vnode operation taking place. */ struct vnodeop_desc { int vdesc_offset; /* offset in vector--first for speed */ const char *vdesc_name; /* a readable name for debugging */ int vdesc_flags; /* VDESC_* flags */ /* * These ops are used by bypass routines to map and locate arguments. * Creds and procs are not needed in bypass routines, but sometimes * they are useful to (for example) transport layers. * Nameidata is useful because it has a cred in it. */ int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ int vdesc_vpp_offset; /* return vpp location */ int vdesc_cred_offset; /* cred location, if any */ int vdesc_proc_offset; /* proc location, if any */ int vdesc_componentname_offset; /* if any */ int vdesc_context_offset; /* context location, if any */ /* * Finally, we've got a list of private data (about each operation) * for each transport layer. (Support to manage this list is not * yet part of BSD.) */ caddr_t *vdesc_transports; }; /* * A list of all the operation descs. */ extern struct vnodeop_desc *vnodeop_descs[]; /* * This macro is very helpful in defining those offsets in the vdesc struct. * * This is stolen from X11R4. I ingored all the fancy stuff for * Crays, so if you decide to port this to such a serious machine, * you might want to consult Intrisics.h's XtOffset{,Of,To}. */ #define VOPARG_OFFSET(p_type, field) \ ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) #define VOPARG_OFFSETOF(s_type, field) \ VOPARG_OFFSET(s_type*,field) #define VOPARG_OFFSETTO(S_TYPE, S_OFFSET, STRUCT_P) \ ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) /* * VOCALL calls an op given an ops vector. We break it out because BSD's * vclean changes the ops vector and then wants to call ops with the old * vector. */ #define VOCALL(OPSV, OFF, AP) (( *((OPSV)[(OFF)])) (AP)) /* * This call works for vnodes in the kernel. */ #define VCALL(VP, OFF, AP) VOCALL((VP)->v_op,(OFF),(AP)) #define VDESC(OP) (& __CONCAT(OP,_desc)) #define VOFFSET(OP) (VDESC(OP)->vdesc_offset) struct ostat; /* bdevvp moved to vnode.h as private KPI */ void cvtstat(struct stat *st, struct ostat *ost); void vprint(const char *label, struct vnode *vp); __private_extern__ int set_package_extensions_table(user_addr_t data, int nentries, int maxwidth); int vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base, int64_t len, off_t offset, enum uio_seg segflg, int ioflg, kauth_cred_t cred, int64_t *aresid, struct proc *p); #if CONFIG_MACF int vn_setlabel(struct vnode *vp, struct label *intlabel, vfs_context_t context); #endif void fifo_printinfo(struct vnode *vp); int vn_open(struct nameidata *ndp, int fmode, int cmode); int vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode); int vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *); int vn_close(vnode_t, int flags, vfs_context_t ctx); errno_t vn_remove(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx); errno_t vn_rename(struct vnode *fdvp, struct vnode **fvpp, struct componentname *fcnp, struct vnode_attr *fvap, struct vnode *tdvp, struct vnode **tvpp, struct componentname *tcnp, struct vnode_attr *tvap, uint32_t flags, vfs_context_t ctx); void lock_vnode_and_post(vnode_t, int); #define post_event_if_success(_vp, _error, _event) \ do { \ if (0 == (_error)) { \ lock_vnode_and_post((_vp), (_event)); \ } \ } while (0) /* Authorization subroutines */ int vn_authorize_open_existing(vnode_t vp, struct componentname *cnp, int fmode, vfs_context_t ctx, void *reserved); int vn_authorize_create(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); int vn_attribute_prepare(vnode_t dvp, struct vnode_attr *vap, uint32_t *defaulted_fieldsp, vfs_context_t ctx); void vn_attribute_cleanup(struct vnode_attr *vap, uint32_t defaulted_fields); int vn_authorize_rename(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, vfs_context_t ctx, void *reserved); int vn_authorize_renamex(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, vfs_context_t ctx, vfs_rename_flags_t flags, void *reserved); int vn_authorize_renamex_with_paths(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, const char *from_path, struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, const char *to_path, vfs_context_t ctx, vfs_rename_flags_t flags, void *reserved); typedef int (*vn_create_authorizer_t)(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); int vn_authorize_mkdir(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); int vn_authorize_null(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); int vnode_attr_authorize_dir_clone(struct vnode_attr *vap, kauth_action_t action, struct vnode_attr *dvap, vnode_t sdvp, mount_t mp, dir_clone_authorizer_op_t vattr_op, uint32_t flags, vfs_context_t ctx, void *reserved); /* End of authorization subroutines */ void vnode_attr_handle_mnt_ignore_ownership(struct vnode_attr *vap, mount_t mp, vfs_context_t ctx); #define VN_CREATE_NOAUTH (1<<0) #define VN_CREATE_NOINHERIT (1<<1) #define VN_CREATE_UNION (1<<2) #define VN_CREATE_NOLABEL (1<<3) #define VN_CREATE_DOOPEN (1<<4) /* Open file if a batched operation is available */ errno_t vn_create(vnode_t, vnode_t *, struct nameidata *, struct vnode_attr *, uint32_t, int, uint32_t*, vfs_context_t); int vn_mkdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx); int vn_rmdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx); int vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t); int vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t); int vn_removexattr(vnode_t, const char *, int, vfs_context_t); int vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t); #if NAMEDSTREAMS errno_t vnode_getnamedstream(vnode_t, vnode_t *, const char *, enum nsoperation, int, vfs_context_t); errno_t vnode_makenamedstream(vnode_t, vnode_t *, const char *, int, vfs_context_t); errno_t vnode_removenamedstream(vnode_t, vnode_t, const char *, int, vfs_context_t); errno_t vnode_flushnamedstream(vnode_t vp, vnode_t svp, vfs_context_t context); errno_t vnode_relenamedstream(vnode_t vp, vnode_t svp); errno_t vnode_verifynamedstream(vnode_t vp); #endif void nchinit(void); int resize_namecache(int newsize); void name_cache_lock_shared(void); void name_cache_lock(void); void name_cache_unlock(void); void cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, int gen); const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp); extern int nc_disabled; #define vnode_lock_convert(v) lck_mtx_convert_spin(&(v)->v_lock) void vnode_lock_spin(vnode_t); void vnode_list_lock(void); void vnode_list_unlock(void); #define VNODE_REF_FORCE 0x1 int vnode_ref_ext(vnode_t, int, int); void vnode_rele_internal(vnode_t, int, int, int); #ifdef BSD_KERNEL_PRIVATE int vnode_getalways(vnode_t); int vnode_getalways_from_pager(vnode_t); int vget_internal(vnode_t, int, int); errno_t vnode_getiocount(vnode_t, unsigned int, int); #endif /* BSD_KERNEL_PRIVATE */ int vnode_get_locked(vnode_t); int vnode_put_locked(vnode_t); #ifdef BSD_KERNEL_PRIVATE int vnode_put_from_pager(vnode_t); #endif /* BSD_KERNEL_PRIVATE */ int vnode_issock(vnode_t); int vnode_isaliased(vnode_t); void unlock_fsnode(vnode_t, int *); int lock_fsnode(vnode_t, int *); errno_t vnode_resume(vnode_t); errno_t vnode_suspend(vnode_t); errno_t vnode_mtime(vnode_t, struct timespec *, vfs_context_t); errno_t vnode_flags(vnode_t, uint32_t *, vfs_context_t); errno_t vnode_size(vnode_t, off_t *, vfs_context_t); errno_t vnode_setsize(vnode_t, off_t, int ioflag, vfs_context_t); int vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx); int vnode_isspec(vnode_t vp); #ifdef BSD_KERNEL_PRIVATE typedef uint32_t compound_vnop_id_t; #define COMPOUND_VNOP_OPEN 0x01 #define COMPOUND_VNOP_MKDIR 0x02 #define COMPOUND_VNOP_RENAME 0x04 #define COMPOUND_VNOP_REMOVE 0x08 #define COMPOUND_VNOP_RMDIR 0x10 int vnode_compound_rename_available(vnode_t vp); int vnode_compound_rmdir_available(vnode_t vp); int vnode_compound_mkdir_available(vnode_t vp); int vnode_compound_remove_available(vnode_t vp); int vnode_compound_open_available(vnode_t vp); int vnode_compound_op_available(vnode_t, compound_vnop_id_t); #endif /* BSD_KERNEL_PRIVATE */ void vn_setunionwait(vnode_t); void vn_checkunionwait(vnode_t); void vn_clearunionwait(vnode_t, int); void SPECHASH_LOCK(void); void SPECHASH_UNLOCK(void); void vnode_authorize_init(void); void vfsinit(void); void vnode_lock(vnode_t); void vnode_unlock(vnode_t); void vn_print_state(vnode_t /* vp */, const char * /* fmt */, ...) __printflike(2, 3); #if DEVELOPMENT || DEBUG #define VNASSERT(exp, vp, msg) \ do { \ if (__improbable(!(exp))) { \ vn_print_state(vp, "VNASSERT failed %s:%d\n", __FILE__, \ __LINE__); \ panic msg; \ } \ } while (0) #else #define VNASSERT(exp, vp, msg) #endif /* DEVELOPMENT || DEBUG */ /* * XXX exported symbols; should be static */ void vfs_op_init(void); void vfs_opv_init(void); #ifdef BSD_KERNEL_PRIVATE int vfs_sysctl_node SYSCTL_HANDLER_ARGS; void vnode_setneedinactive(vnode_t); int vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */ errno_t vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag, int *numdirent, vfs_context_t ctxp); void vnode_setswapmount(vnode_t); int64_t vnode_getswappin_avail(vnode_t); int vnode_get_snapdir(vnode_t, vnode_t *, vfs_context_t); #if CONFIG_TRIGGERS /* VFS Internal Vnode Trigger Interfaces (Private) */ int vnode_trigger_resolve(vnode_t, struct nameidata *, vfs_context_t); void vnode_trigger_rearm(vnode_t, vfs_context_t); void vfs_nested_trigger_unmounts(mount_t, int, vfs_context_t); #endif /* CONFIG_TRIGGERS */ int build_path_with_parent(vnode_t, vnode_t /* parent */, char *, int, int *, size_t *, int, vfs_context_t); void nspace_resolver_init(void); void nspace_resolver_exited(struct proc *); int vnode_materialize_dataless_file(vnode_t, uint64_t); int vnode_isinuse_locked(vnode_t, int, int ); #endif /* BSD_KERNEL_PRIVATE */ #if CONFIG_IO_COMPRESSION_STATS /* * update the IO compression stats tracked at block granularity */ int vnode_updateiocompressionblockstats(vnode_t vp, uint32_t size_bucket); /* * update the IO compression stats tracked for the buffer */ int vnode_updateiocompressionbufferstats(vnode_t vp, uint64_t uncompressed_size, uint64_t compressed_size, uint32_t size_bucket, uint32_t compression_bucket); #endif /* CONFIG_IO_COMPRESSION_STATS */ extern bool rootvp_is_ssd; #endif /* !_SYS_VNODE_INTERNAL_H_ */ |