1/* 2 * Copyright (c) 2000-2012 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29/* 30 * Copyright (c) 1989, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by the University of 44 * California, Berkeley and its contributors. 45 * 4. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)vnode.h 8.17 (Berkeley) 5/20/95 62 */ 63/* 64 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce 65 * support for mandatory and extensible security protections. This notice 66 * is included in support of clause 2.2 (b) of the Apple Public License, 67 * Version 2.0. 68 */ 69 70#ifndef _SYS_VNODE_INTERNAL_H_ 71#define _SYS_VNODE_INTERNAL_H_ 72 73#include <sys/appleapiopts.h> 74#include <sys/cdefs.h> 75#include <sys/queue.h> 76#include <sys/lock.h> 77 78#include <sys/time.h> 79#include <sys/uio.h> 80 81#include <sys/vm.h> 82#include <sys/systm.h> 83#include <kern/locks.h> 84#include <vm/vm_kern.h> 85#include <sys/vnode.h> 86#include <sys/namei.h> 87#include <sys/vfs_context.h> 88#include <sys/sysctl.h> 89 90 91struct lockf; 92struct label; 93 94LIST_HEAD(buflists, buf); 95 96#if CONFIG_VFS_FUNNEL 97struct unsafe_fsnode { 98 lck_mtx_t fsnodelock; 99 int32_t fsnode_count; 100 void * fsnodeowner; 101}; 102#endif /* CONFIG_VFS_FUNNEL */ 103 104#if CONFIG_TRIGGERS 105/* 106 * VFS Internal (private) trigger vnode resolver info. 107 */ 108struct vnode_resolve { 109 lck_mtx_t vr_lock; /* protects vnode_resolve_t fields */ 110 trigger_vnode_resolve_callback_t vr_resolve_func; 111 trigger_vnode_unresolve_callback_t vr_unresolve_func; 112 trigger_vnode_rearm_callback_t vr_rearm_func; 113 trigger_vnode_reclaim_callback_t vr_reclaim_func; 114 void * vr_data; /* private data for resolver */ 115 uint32_t vr_flags; 116 uint32_t vr_lastseq; 117}; 118typedef struct vnode_resolve *vnode_resolve_t; 119 120/* private vr_flags */ 121#define VNT_RESOLVED (1UL << 31) 122#define VNT_VFS_UNMOUNTED (1UL << 30) 123#define VNT_EXTERNAL (1UL << 29) 124 125#endif /* CONFIG_TRIGGERS */ 126 127/* 128 * Reading or writing any of these items requires holding the appropriate lock. 129 * v_freelist is locked by the global vnode_list_lock 130 * v_mntvnodes is locked by the mount_lock 131 * v_nclinks and v_ncchildren are protected by the global name_cache_lock 132 * v_cleanblkhd and v_dirtyblkhd and v_iterblkflags are locked via the global buf_mtxp 133 * the rest of the structure is protected by the vnode_lock 134 */ 135struct vnode { 136 lck_mtx_t v_lock; /* vnode mutex */ 137 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 138 TAILQ_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ 139 LIST_HEAD(, namecache) v_nclinks; /* name cache entries that name this vnode */ 140 LIST_HEAD(, namecache) v_ncchildren; /* name cache entries that regard us as there parent */ 141 vnode_t v_defer_reclaimlist; /* in case we have to defer the reclaim to avoid recursion */ 142 uint32_t v_listflag; /* flags protected by the vnode_list_lock (see below) */ 143 uint32_t v_flag; /* vnode flags (see below) */ 144 uint16_t v_lflag; /* vnode local and named ref flags */ 145 uint8_t v_iterblkflags; /* buf iterator flags */ 146 uint8_t v_references; /* number of times io_count has been granted */ 147 int32_t v_kusecount; /* count of in-kernel refs */ 148 int32_t v_usecount; /* reference count of users */ 149 int32_t v_iocount; /* iocounters */ 150 void * v_owner; /* act that owns the vnode */ 151 uint16_t v_type; /* vnode type */ 152 uint16_t v_tag; /* type of underlying data */ 153 uint32_t v_id; /* identity of vnode contents */ 154 union { 155 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 156 struct socket *vu_socket; /* unix ipc (VSOCK) */ 157 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 158 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 159 struct ubc_info *vu_ubcinfo; /* valid for (VREG) */ 160 } v_un; 161 struct buflists v_cleanblkhd; /* clean blocklist head */ 162 struct buflists v_dirtyblkhd; /* dirty blocklist head */ 163 struct klist v_knotes; /* knotes attached to this vnode */ 164 /* 165 * the following 4 fields are protected 166 * by the name_cache_lock held in 167 * excluive mode 168 */ 169 kauth_cred_t v_cred; /* last authorized credential */ 170 kauth_action_t v_authorized_actions; /* current authorized actions for v_cred */ 171 int v_cred_timestamp; /* determine if entry is stale for MNTK_AUTH_OPAQUE */ 172 int v_nc_generation; /* changes when nodes are removed from the name cache */ 173 /* 174 * back to the vnode lock for protection 175 */ 176 int32_t v_numoutput; /* num of writes in progress */ 177 int32_t v_writecount; /* reference count of writers */ 178 const char *v_name; /* name component of the vnode */ 179 vnode_t v_parent; /* pointer to parent vnode */ 180 struct lockf *v_lockf; /* advisory lock list head */ 181#if CONFIG_VFS_FUNNEL 182 struct unsafe_fsnode *v_unsafefs; /* pointer to struct used to lock */ 183#else 184 int32_t v_reserved1; 185#ifdef __LP64__ 186 int32_t v_reserved2; 187#endif 188#endif /* CONFIG_VFS_FUNNEL */ 189 int (**v_op)(void *); /* vnode operations vector */ 190 mount_t v_mount; /* ptr to vfs we are in */ 191 void * v_data; /* private data for fs */ 192#if CONFIG_MACF 193 struct label *v_label; /* MAC security label */ 194#endif 195#if CONFIG_TRIGGERS 196 vnode_resolve_t v_resolve; /* trigger vnode resolve info (VDIR only) */ 197#endif /* CONFIG_TRIGGERS */ 198}; 199 200#define v_mountedhere v_un.vu_mountedhere 201#define v_socket v_un.vu_socket 202#define v_specinfo v_un.vu_specinfo 203#define v_fifoinfo v_un.vu_fifoinfo 204#define v_ubcinfo v_un.vu_ubcinfo 205 206 207/* 208 * v_iterblkflags 209 */ 210#define VBI_ITER 0x1 211#define VBI_ITERWANT 0x2 212#define VBI_CLEAN 0x4 213#define VBI_DIRTY 0x8 214#define VBI_NEWBUF 0x10 215 216/* 217 * v_listflag 218 */ 219#define VLIST_RAGE 0x01 /* vnode is currently in the rapid age list */ 220#define VLIST_DEAD 0x02 /* vnode is currently in the dead list */ 221#define VLIST_ASYNC_WORK 0x04 /* vnode is currently on the deferred async work queue */ 222 223/* 224 * v_lflags 225 */ 226#define VL_SUSPENDED 0x0001 /* vnode is suspended */ 227#define VL_DRAIN 0x0002 /* vnode is being drained */ 228#define VL_TERMINATE 0x0004 /* vnode is in the process of being recycled */ 229#define VL_TERMWANT 0x0008 /* there's a waiter for recycle finish (vnode_getiocount)*/ 230#define VL_DEAD 0x0010 /* vnode is dead, cleaned of filesystem-specific info */ 231#define VL_MARKTERM 0x0020 /* vnode should be recycled when no longer referenced */ 232#define VL_NEEDINACTIVE 0x0080 /* delay VNOP_INACTIVE until iocount goes to 0 */ 233 234#define VL_LABEL 0x0100 /* vnode is marked for labeling */ 235#define VL_LABELWAIT 0x0200 /* vnode is marked for labeling */ 236#define VL_LABELED 0x0400 /* vnode is labeled */ 237#define VL_LWARNED 0x0800 238#define VL_HASSTREAMS 0x1000 /* vnode has had at least one associated named stream vnode (may not have one any longer) */ 239 240#define VNAMED_UBC 0x2000 /* ubc named reference */ 241#define VNAMED_MOUNT 0x4000 /* mount point named reference */ 242#define VNAMED_FSHASH 0x8000 /* FS hash named reference */ 243 244/* 245 * v_flags 246 */ 247#define VROOT 0x000001 /* root of its file system */ 248#define VTEXT 0x000002 /* vnode is a pure text prototype */ 249#define VSYSTEM 0x000004 /* vnode being used by kernel */ 250#define VISTTY 0x000008 /* vnode represents a tty */ 251#define VRAGE 0x000010 /* vnode is in rapid age state */ 252#define VBDEVVP 0x000020 /* vnode created by bdevvp */ 253#define VDEVFLUSH 0x000040 /* device vnode after vflush */ 254#define VMOUNT 0x000080 /* mount operation in progress */ 255#define VBWAIT 0x000100 /* waiting for output to complete */ 256#define VSHARED_DYLD 0x000200 /* vnode is a dyld shared cache file */ 257#define VNOCACHE_DATA 0x000400 /* don't keep data cached once it's been consumed */ 258#define VSTANDARD 0x000800 /* vnode obtained from common pool */ 259#define VAGE 0x001000 /* Insert vnode at head of free list */ 260#define VRAOFF 0x002000 /* read ahead disabled */ 261#define VNCACHEABLE 0x004000 /* vnode is allowed to be put back in name cache */ 262#if NAMEDSTREAMS 263#define VISSHADOW 0x008000 /* vnode is a shadow file */ 264#endif 265#define VSWAP 0x010000 /* vnode is being used as swapfile */ 266#define VTHROTTLED 0x020000 /* writes or pageouts have been throttled */ 267 /* wakeup tasks waiting when count falls below threshold */ 268#define VNOFLUSH 0x040000 /* don't vflush() if SKIPSYSTEM */ 269#define VLOCKLOCAL 0x080000 /* this vnode does adv locking in vfs */ 270#define VISHARDLINK 0x100000 /* hard link needs special processing on lookup and in volfs */ 271#define VISUNION 0x200000 /* union special processing */ 272#if NAMEDSTREAMS 273#define VISNAMEDSTREAM 0x400000 /* vnode is a named stream (eg HFS resource fork) */ 274#endif 275#define VOPENEVT 0x800000 /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */ 276#define VNEEDSSNAPSHOT 0x1000000 277 278/* 279 * Global vnode data. 280 */ 281extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 282 283#ifdef CONFIG_IMGSRC_ACCESS 284#define MAX_IMAGEBOOT_NESTING 2 285extern struct vnode *imgsrc_rootvnodes[]; 286#endif /* CONFIG_IMGSRC_ACCESS */ 287 288 289/* 290 * Mods for exensibility. 291 */ 292 293/* 294 * Flags for vdesc_flags: 295 */ 296#define VDESC_MAX_VPS 16 297/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 298#define VDESC_VP0_WILLRELE 0x0001 299#define VDESC_VP1_WILLRELE 0x0002 300#define VDESC_VP2_WILLRELE 0x0004 301#define VDESC_VP3_WILLRELE 0x0008 302#define VDESC_NOMAP_VPP 0x0100 303#define VDESC_VPP_WILLRELE 0x0200 304 305/* 306 * VDESC_NO_OFFSET is used to identify the end of the offset list 307 * and in places where no such field exists. 308 */ 309#define VDESC_NO_OFFSET -1 310 311/* 312 * This structure describes the vnode operation taking place. 313 */ 314struct vnodeop_desc { 315 int vdesc_offset; /* offset in vector--first for speed */ 316 const char *vdesc_name; /* a readable name for debugging */ 317 int vdesc_flags; /* VDESC_* flags */ 318 319 /* 320 * These ops are used by bypass routines to map and locate arguments. 321 * Creds and procs are not needed in bypass routines, but sometimes 322 * they are useful to (for example) transport layers. 323 * Nameidata is useful because it has a cred in it. 324 */ 325 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 326 int vdesc_vpp_offset; /* return vpp location */ 327 int vdesc_cred_offset; /* cred location, if any */ 328 int vdesc_proc_offset; /* proc location, if any */ 329 int vdesc_componentname_offset; /* if any */ 330 int vdesc_context_offset; /* context location, if any */ 331 /* 332 * Finally, we've got a list of private data (about each operation) 333 * for each transport layer. (Support to manage this list is not 334 * yet part of BSD.) 335 */ 336 caddr_t *vdesc_transports; 337}; 338 339/* 340 * A list of all the operation descs. 341 */ 342extern struct vnodeop_desc *vnodeop_descs[]; 343 344 345/* 346 * This macro is very helpful in defining those offsets in the vdesc struct. 347 * 348 * This is stolen from X11R4. I ingored all the fancy stuff for 349 * Crays, so if you decide to port this to such a serious machine, 350 * you might want to consult Intrisics.h's XtOffset{,Of,To}. 351 */ 352#define VOPARG_OFFSET(p_type,field) \ 353 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 354#define VOPARG_OFFSETOF(s_type,field) \ 355 VOPARG_OFFSET(s_type*,field) 356#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 357 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 358 359 360 361/* 362 * VOCALL calls an op given an ops vector. We break it out because BSD's 363 * vclean changes the ops vector and then wants to call ops with the old 364 * vector. 365 */ 366#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 367 368/* 369 * This call works for vnodes in the kernel. 370 */ 371#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 372#define VDESC(OP) (& __CONCAT(OP,_desc)) 373#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 374 375struct ostat; 376 377#define BUILDPATH_NO_FS_ENTER 0x1 /* Use cache values, do not enter file system */ 378#define BUILDPATH_CHECKACCESS 0x2 /* Check if parents have search rights */ 379#define BUILDPATH_CHECK_MOVED 0x4 /* Return EAGAIN if the parent hierarchy is modified */ 380 381int build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx); 382 383int bdevvp(dev_t dev, struct vnode **vpp); 384void cvtstat(struct stat *st, struct ostat *ost); 385void vprint(const char *label, struct vnode *vp); 386 387 388__private_extern__ int is_package_name(const char *name, int len); 389__private_extern__ int set_package_extensions_table(user_addr_t data, int nentries, int maxwidth); 390int vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base, 391 int64_t len, off_t offset, enum uio_seg segflg, 392 int ioflg, kauth_cred_t cred, int64_t *aresid, 393 struct proc *p); 394#if CONFIG_MACF 395int vn_setlabel (struct vnode *vp, struct label *intlabel, 396 vfs_context_t context); 397#endif 398void fifo_printinfo(struct vnode *vp); 399int vn_open(struct nameidata *ndp, int fmode, int cmode); 400int vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode); 401int vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *); 402int vn_close(vnode_t, int flags, vfs_context_t ctx); 403errno_t vn_remove(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx); 404errno_t vn_rename(struct vnode *fdvp, struct vnode **fvpp, struct componentname *fcnp, struct vnode_attr *fvap, 405 struct vnode *tdvp, struct vnode **tvpp, struct componentname *tcnp, struct vnode_attr *tvap, 406 uint32_t flags, vfs_context_t ctx); 407 408void lock_vnode_and_post(vnode_t, int); 409 410#define post_event_if_success(_vp, _error, _event) \ 411 do { \ 412 if (0 == (_error)) { \ 413 lock_vnode_and_post((_vp), (_event)); \ 414 } \ 415 } while (0) 416 417/* Authorization subroutines */ 418int vn_authorize_open_existing(vnode_t vp, struct componentname *cnp, int fmode, vfs_context_t ctx, void *reserved); 419int vn_authorize_create(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 420int vn_attribute_prepare(vnode_t dvp, struct vnode_attr *vap, uint32_t *defaulted_fieldsp, vfs_context_t ctx); 421void vn_attribute_cleanup(struct vnode_attr *vap, uint32_t defaulted_fields); 422int vn_authorize_unlink(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved); 423int vn_authorize_rename(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, 424 struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, 425 vfs_context_t ctx, void *reserved); 426int vn_authorize_rmdir(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved); 427 428typedef int (*vn_create_authorizer_t)(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 429int vn_authorize_mkdir(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 430int vn_authorize_null(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 431/* End of authorization subroutines */ 432 433#define VN_CREATE_NOAUTH (1<<0) 434#define VN_CREATE_NOINHERIT (1<<1) 435#define VN_CREATE_UNION (1<<2) 436#define VN_CREATE_NOLABEL (1<<3) 437#define VN_CREATE_DOOPEN (1<<4) /* Open file if a batched operation is available */ 438errno_t vn_create(vnode_t, vnode_t *, struct nameidata *, struct vnode_attr *, uint32_t, int, uint32_t*, vfs_context_t); 439int vn_mkdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx); 440int vn_rmdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx); 441 442int vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t); 443int vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t); 444int vn_removexattr(vnode_t, const char *, int, vfs_context_t); 445int vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t); 446 447int default_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t); 448int default_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t); 449int default_removexattr(vnode_t, const char *, int, vfs_context_t); 450 451int check_appledouble_header(vnode_t, vfs_context_t); 452 453#if NAMEDSTREAMS 454errno_t vnode_getnamedstream(vnode_t, vnode_t *, const char *, enum nsoperation, int, vfs_context_t); 455errno_t vnode_makenamedstream(vnode_t, vnode_t *, const char *, int, vfs_context_t); 456errno_t vnode_removenamedstream(vnode_t, vnode_t, const char *, int, vfs_context_t); 457errno_t vnode_flushnamedstream(vnode_t vp, vnode_t svp, vfs_context_t context); 458errno_t vnode_relenamedstream(vnode_t vp, vnode_t svp, vfs_context_t context); 459errno_t vnode_verifynamedstream (vnode_t vp, vfs_context_t ctx); 460#endif 461 462 463void nchinit(void) __attribute__((section("__TEXT, initcode"))); 464int resize_namecache(uint32_t newsize); 465void name_cache_lock_shared(void); 466void name_cache_lock(void); 467void name_cache_unlock(void); 468void cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, int gen); 469const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp); 470 471int vn_pathconf(vnode_t, int, int32_t *, vfs_context_t); 472extern int nc_disabled; 473 474#define vnode_lock_convert(v) lck_mtx_convert_spin(&(v)->v_lock) 475 476void vnode_lock_spin(vnode_t); 477 478 479void vnode_list_lock(void); 480void vnode_list_unlock(void); 481 482#define VNODE_REF_FORCE 0x1 483int vnode_ref_ext(vnode_t, int, int); 484 485void vnode_rele_ext(vnode_t, int, int); 486void vnode_rele_internal(vnode_t, int, int, int); 487#ifdef BSD_KERNEL_PRIVATE 488int vnode_getalways(vnode_t); 489int vget_internal(vnode_t, int, int); 490errno_t vnode_getiocount(vnode_t, unsigned int, int); 491#endif /* BSD_KERNEL_PRIVATE */ 492int vnode_get_locked(vnode_t); 493int vnode_put_locked(vnode_t); 494 495int vnode_issock(vnode_t); 496int vnode_isaliased(vnode_t); 497 498void unlock_fsnode(vnode_t, int *); 499int lock_fsnode(vnode_t, int *); 500 501errno_t vnode_resume(vnode_t); 502errno_t vnode_suspend(vnode_t); 503 504 505errno_t vnode_size(vnode_t, off_t *, vfs_context_t); 506errno_t vnode_setsize(vnode_t, off_t, int ioflag, vfs_context_t); 507int vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx); 508int vnode_isspec(vnode_t vp); 509 510 511#ifdef BSD_KERNEL_PRIVATE 512 513typedef uint32_t compound_vnop_id_t; 514#define COMPOUND_VNOP_OPEN 0x01 515#define COMPOUND_VNOP_MKDIR 0x02 516#define COMPOUND_VNOP_RENAME 0x04 517#define COMPOUND_VNOP_REMOVE 0x08 518#define COMPOUND_VNOP_RMDIR 0x10 519 520int vnode_compound_rename_available(vnode_t vp); 521int vnode_compound_rmdir_available(vnode_t vp); 522int vnode_compound_mkdir_available(vnode_t vp); 523int vnode_compound_remove_available(vnode_t vp); 524int vnode_compound_open_available(vnode_t vp); 525int vnode_compound_op_available(vnode_t, compound_vnop_id_t); 526#endif /* BSD_KERNEL_PRIVATE */ 527 528void vn_setunionwait(vnode_t); 529void vn_checkunionwait(vnode_t); 530void vn_clearunionwait(vnode_t, int); 531 532void SPECHASH_LOCK(void); 533void SPECHASH_UNLOCK(void); 534 535void vnode_authorize_init(void) __attribute__((section("__TEXT, initcode"))); 536 537void vfsinit(void) __attribute__((section("__TEXT, initcode"))); 538void vnode_lock(vnode_t); 539void vnode_unlock(vnode_t); 540 541/* 542 * XXX exported symbols; should be static 543 */ 544void vfs_op_init(void) __attribute__((section("__TEXT, initcode"))); 545void vfs_opv_init(void) __attribute__((section("__TEXT, initcode"))); 546int vfs_sysctl(int *name, uint32_t namelen, user_addr_t oldp, size_t *oldlenp, 547 user_addr_t newp, size_t newlen, struct proc *p); 548int sysctl_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); 549 550#ifdef BSD_KERNEL_PRIVATE 551void vnode_setneedinactive(vnode_t); 552int vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */ 553 554void nspace_proc_exit(struct proc *p); 555 556#if CONFIG_TRIGGERS 557/* VFS Internal Vnode Trigger Interfaces (Private) */ 558int vnode_trigger_resolve(vnode_t, struct nameidata *, vfs_context_t); 559void vnode_trigger_rearm(vnode_t, vfs_context_t); 560void vfs_nested_trigger_unmounts(mount_t, int, vfs_context_t); 561#endif /* CONFIG_TRIGGERS */ 562 563#endif /* BSD_KERNEL_PRIVATE */ 564 565#endif /* !_SYS_VNODE_INTERNAL_H_ */ 566