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_TRIGGERS 97/* 98 * VFS Internal (private) trigger vnode resolver info. 99 */ 100struct vnode_resolve { 101 lck_mtx_t vr_lock; /* protects vnode_resolve_t fields */ 102 trigger_vnode_resolve_callback_t vr_resolve_func; 103 trigger_vnode_unresolve_callback_t vr_unresolve_func; 104 trigger_vnode_rearm_callback_t vr_rearm_func; 105 trigger_vnode_reclaim_callback_t vr_reclaim_func; 106 void * vr_data; /* private data for resolver */ 107 uint32_t vr_flags; 108 uint32_t vr_lastseq; 109}; 110typedef struct vnode_resolve *vnode_resolve_t; 111 112/* private vr_flags */ 113#define VNT_RESOLVED (1UL << 31) 114#define VNT_VFS_UNMOUNTED (1UL << 30) 115#define VNT_EXTERNAL (1UL << 29) 116 117#endif /* CONFIG_TRIGGERS */ 118 119/* 120 * Reading or writing any of these items requires holding the appropriate lock. 121 * v_freelist is locked by the global vnode_list_lock 122 * v_mntvnodes is locked by the mount_lock 123 * v_nclinks and v_ncchildren are protected by the global name_cache_lock 124 * v_cleanblkhd and v_dirtyblkhd and v_iterblkflags are locked via the global buf_mtxp 125 * the rest of the structure is protected by the vnode_lock 126 */ 127struct vnode { 128 lck_mtx_t v_lock; /* vnode mutex */ 129 TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */ 130 TAILQ_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */ 131 LIST_HEAD(, namecache) v_nclinks; /* name cache entries that name this vnode */ 132 LIST_HEAD(, namecache) v_ncchildren; /* name cache entries that regard us as their parent */ 133 vnode_t v_defer_reclaimlist; /* in case we have to defer the reclaim to avoid recursion */ 134 uint32_t v_listflag; /* flags protected by the vnode_list_lock (see below) */ 135 uint32_t v_flag; /* vnode flags (see below) */ 136 uint16_t v_lflag; /* vnode local and named ref flags */ 137 uint8_t v_iterblkflags; /* buf iterator flags */ 138 uint8_t v_references; /* number of times io_count has been granted */ 139 int32_t v_kusecount; /* count of in-kernel refs */ 140 int32_t v_usecount; /* reference count of users */ 141 int32_t v_iocount; /* iocounters */ 142 void * v_owner; /* act that owns the vnode */ 143 uint16_t v_type; /* vnode type */ 144 uint16_t v_tag; /* type of underlying data */ 145 uint32_t v_id; /* identity of vnode contents */ 146 union { 147 struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */ 148 struct socket *vu_socket; /* unix ipc (VSOCK) */ 149 struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */ 150 struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */ 151 struct ubc_info *vu_ubcinfo; /* valid for (VREG) */ 152 } v_un; 153 struct buflists v_cleanblkhd; /* clean blocklist head */ 154 struct buflists v_dirtyblkhd; /* dirty blocklist head */ 155 struct klist v_knotes; /* knotes attached to this vnode */ 156 /* 157 * the following 4 fields are protected 158 * by the name_cache_lock held in 159 * excluive mode 160 */ 161 kauth_cred_t v_cred; /* last authorized credential */ 162 kauth_action_t v_authorized_actions; /* current authorized actions for v_cred */ 163 int v_cred_timestamp; /* determine if entry is stale for MNTK_AUTH_OPAQUE */ 164 int v_nc_generation; /* changes when nodes are removed from the name cache */ 165 /* 166 * back to the vnode lock for protection 167 */ 168 int32_t v_numoutput; /* num of writes in progress */ 169 int32_t v_writecount; /* reference count of writers */ 170 const char *v_name; /* name component of the vnode */ 171 vnode_t v_parent; /* pointer to parent vnode */ 172 struct lockf *v_lockf; /* advisory lock list head */ 173 int (**v_op)(void *); /* vnode operations vector */ 174 mount_t v_mount; /* ptr to vfs we are in */ 175 void * v_data; /* private data for fs */ 176#if CONFIG_MACF 177 struct label *v_label; /* MAC security label */ 178#endif 179#if CONFIG_TRIGGERS 180 vnode_resolve_t v_resolve; /* trigger vnode resolve info (VDIR only) */ 181#endif /* CONFIG_TRIGGERS */ 182}; 183 184#define v_mountedhere v_un.vu_mountedhere 185#define v_socket v_un.vu_socket 186#define v_specinfo v_un.vu_specinfo 187#define v_fifoinfo v_un.vu_fifoinfo 188#define v_ubcinfo v_un.vu_ubcinfo 189 190 191/* 192 * v_iterblkflags 193 */ 194#define VBI_ITER 0x1 195#define VBI_ITERWANT 0x2 196#define VBI_CLEAN 0x4 197#define VBI_DIRTY 0x8 198#define VBI_NEWBUF 0x10 199 200/* 201 * v_listflag 202 */ 203#define VLIST_RAGE 0x01 /* vnode is currently in the rapid age list */ 204#define VLIST_DEAD 0x02 /* vnode is currently in the dead list */ 205#define VLIST_ASYNC_WORK 0x04 /* vnode is currently on the deferred async work queue */ 206 207/* 208 * v_lflags 209 */ 210#define VL_SUSPENDED 0x0001 /* vnode is suspended */ 211#define VL_DRAIN 0x0002 /* vnode is being drained */ 212#define VL_TERMINATE 0x0004 /* vnode is in the process of being recycled */ 213#define VL_TERMWANT 0x0008 /* there's a waiter for recycle finish (vnode_getiocount)*/ 214#define VL_DEAD 0x0010 /* vnode is dead, cleaned of filesystem-specific info */ 215#define VL_MARKTERM 0x0020 /* vnode should be recycled when no longer referenced */ 216#define VL_NEEDINACTIVE 0x0080 /* delay VNOP_INACTIVE until iocount goes to 0 */ 217 218#define VL_LABEL 0x0100 /* vnode is marked for labeling */ 219#define VL_LABELWAIT 0x0200 /* vnode is marked for labeling */ 220#define VL_LABELED 0x0400 /* vnode is labeled */ 221#define VL_LWARNED 0x0800 222#define VL_HASSTREAMS 0x1000 /* vnode has had at least one associated named stream vnode (may not have one any longer) */ 223 224#define VNAMED_UBC 0x2000 /* ubc named reference */ 225#define VNAMED_MOUNT 0x4000 /* mount point named reference */ 226#define VNAMED_FSHASH 0x8000 /* FS hash named reference */ 227 228/* 229 * v_flags 230 */ 231#define VROOT 0x000001 /* root of its file system */ 232#define VTEXT 0x000002 /* vnode is a pure text prototype */ 233#define VSYSTEM 0x000004 /* vnode being used by kernel */ 234#define VISTTY 0x000008 /* vnode represents a tty */ 235#define VRAGE 0x000010 /* vnode is in rapid age state */ 236#define VBDEVVP 0x000020 /* vnode created by bdevvp */ 237#define VDEVFLUSH 0x000040 /* device vnode after vflush */ 238#define VMOUNT 0x000080 /* mount operation in progress */ 239#define VBWAIT 0x000100 /* waiting for output to complete */ 240#define VSHARED_DYLD 0x000200 /* vnode is a dyld shared cache file */ 241#define VNOCACHE_DATA 0x000400 /* don't keep data cached once it's been consumed */ 242#define VSTANDARD 0x000800 /* vnode obtained from common pool */ 243#define VAGE 0x001000 /* Insert vnode at head of free list */ 244#define VRAOFF 0x002000 /* read ahead disabled */ 245#define VNCACHEABLE 0x004000 /* vnode is allowed to be put back in name cache */ 246#if NAMEDSTREAMS 247#define VISSHADOW 0x008000 /* vnode is a shadow file */ 248#endif 249#define VSWAP 0x010000 /* vnode is being used as swapfile */ 250#define VTHROTTLED 0x020000 /* writes or pageouts have been throttled */ 251 /* wakeup tasks waiting when count falls below threshold */ 252#define VNOFLUSH 0x040000 /* don't vflush() if SKIPSYSTEM */ 253#define VLOCKLOCAL 0x080000 /* this vnode does adv locking in vfs */ 254#define VISHARDLINK 0x100000 /* hard link needs special processing on lookup and in volfs */ 255#define VISUNION 0x200000 /* union special processing */ 256#if NAMEDSTREAMS 257#define VISNAMEDSTREAM 0x400000 /* vnode is a named stream (eg HFS resource fork) */ 258#endif 259#define VOPENEVT 0x800000 /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */ 260#define VNEEDSSNAPSHOT 0x1000000 261#define VNOCS 0x2000000 /* is there no code signature available */ 262 263/* 264 * Global vnode data. 265 */ 266extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ 267 268#ifdef CONFIG_IMGSRC_ACCESS 269#define MAX_IMAGEBOOT_NESTING 2 270extern struct vnode *imgsrc_rootvnodes[]; 271#endif /* CONFIG_IMGSRC_ACCESS */ 272 273 274/* 275 * Mods for exensibility. 276 */ 277 278/* 279 * Flags for vdesc_flags: 280 */ 281#define VDESC_MAX_VPS 16 282/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ 283#define VDESC_VP0_WILLRELE 0x0001 284#define VDESC_VP1_WILLRELE 0x0002 285#define VDESC_VP2_WILLRELE 0x0004 286#define VDESC_VP3_WILLRELE 0x0008 287#define VDESC_NOMAP_VPP 0x0100 288#define VDESC_VPP_WILLRELE 0x0200 289 290/* 291 * VDESC_NO_OFFSET is used to identify the end of the offset list 292 * and in places where no such field exists. 293 */ 294#define VDESC_NO_OFFSET -1 295 296/* 297 * This structure describes the vnode operation taking place. 298 */ 299struct vnodeop_desc { 300 int vdesc_offset; /* offset in vector--first for speed */ 301 const char *vdesc_name; /* a readable name for debugging */ 302 int vdesc_flags; /* VDESC_* flags */ 303 304 /* 305 * These ops are used by bypass routines to map and locate arguments. 306 * Creds and procs are not needed in bypass routines, but sometimes 307 * they are useful to (for example) transport layers. 308 * Nameidata is useful because it has a cred in it. 309 */ 310 int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */ 311 int vdesc_vpp_offset; /* return vpp location */ 312 int vdesc_cred_offset; /* cred location, if any */ 313 int vdesc_proc_offset; /* proc location, if any */ 314 int vdesc_componentname_offset; /* if any */ 315 int vdesc_context_offset; /* context location, if any */ 316 /* 317 * Finally, we've got a list of private data (about each operation) 318 * for each transport layer. (Support to manage this list is not 319 * yet part of BSD.) 320 */ 321 caddr_t *vdesc_transports; 322}; 323 324/* 325 * A list of all the operation descs. 326 */ 327extern struct vnodeop_desc *vnodeop_descs[]; 328 329 330/* 331 * This macro is very helpful in defining those offsets in the vdesc struct. 332 * 333 * This is stolen from X11R4. I ingored all the fancy stuff for 334 * Crays, so if you decide to port this to such a serious machine, 335 * you might want to consult Intrisics.h's XtOffset{,Of,To}. 336 */ 337#define VOPARG_OFFSET(p_type,field) \ 338 ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL))) 339#define VOPARG_OFFSETOF(s_type,field) \ 340 VOPARG_OFFSET(s_type*,field) 341#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \ 342 ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) 343 344 345 346/* 347 * VOCALL calls an op given an ops vector. We break it out because BSD's 348 * vclean changes the ops vector and then wants to call ops with the old 349 * vector. 350 */ 351#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP)) 352 353/* 354 * This call works for vnodes in the kernel. 355 */ 356#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP)) 357#define VDESC(OP) (& __CONCAT(OP,_desc)) 358#define VOFFSET(OP) (VDESC(OP)->vdesc_offset) 359 360struct ostat; 361 362#define BUILDPATH_NO_FS_ENTER 0x1 /* Use cache values, do not enter file system */ 363#define BUILDPATH_CHECKACCESS 0x2 /* Check if parents have search rights */ 364#define BUILDPATH_CHECK_MOVED 0x4 /* Return EAGAIN if the parent hierarchy is modified */ 365#define BUILDPATH_VOLUME_RELATIVE 0x8 /* Return path relative to the nearest mount point */ 366 367int build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx); 368 369int bdevvp(dev_t dev, struct vnode **vpp); 370void cvtstat(struct stat *st, struct ostat *ost); 371void vprint(const char *label, struct vnode *vp); 372 373 374__private_extern__ int is_package_name(const char *name, int len); 375__private_extern__ int set_package_extensions_table(user_addr_t data, int nentries, int maxwidth); 376int vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base, 377 int64_t len, off_t offset, enum uio_seg segflg, 378 int ioflg, kauth_cred_t cred, int64_t *aresid, 379 struct proc *p); 380#if CONFIG_MACF 381int vn_setlabel (struct vnode *vp, struct label *intlabel, 382 vfs_context_t context); 383#endif 384void fifo_printinfo(struct vnode *vp); 385int vn_open(struct nameidata *ndp, int fmode, int cmode); 386int vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode); 387int vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *); 388int vn_close(vnode_t, int flags, vfs_context_t ctx); 389errno_t vn_remove(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx); 390errno_t vn_rename(struct vnode *fdvp, struct vnode **fvpp, struct componentname *fcnp, struct vnode_attr *fvap, 391 struct vnode *tdvp, struct vnode **tvpp, struct componentname *tcnp, struct vnode_attr *tvap, 392 uint32_t flags, vfs_context_t ctx); 393 394void lock_vnode_and_post(vnode_t, int); 395 396#define post_event_if_success(_vp, _error, _event) \ 397 do { \ 398 if (0 == (_error)) { \ 399 lock_vnode_and_post((_vp), (_event)); \ 400 } \ 401 } while (0) 402 403/* Authorization subroutines */ 404int vn_authorize_open_existing(vnode_t vp, struct componentname *cnp, int fmode, vfs_context_t ctx, void *reserved); 405int vn_authorize_create(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 406int vn_attribute_prepare(vnode_t dvp, struct vnode_attr *vap, uint32_t *defaulted_fieldsp, vfs_context_t ctx); 407void vn_attribute_cleanup(struct vnode_attr *vap, uint32_t defaulted_fields); 408int vn_authorize_unlink(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved); 409int vn_authorize_rename(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, 410 struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, 411 vfs_context_t ctx, void *reserved); 412int vn_authorize_rmdir(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved); 413 414typedef int (*vn_create_authorizer_t)(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 415int vn_authorize_mkdir(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 416int vn_authorize_null(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 417/* End of authorization subroutines */ 418 419#define VN_CREATE_NOAUTH (1<<0) 420#define VN_CREATE_NOINHERIT (1<<1) 421#define VN_CREATE_UNION (1<<2) 422#define VN_CREATE_NOLABEL (1<<3) 423#define VN_CREATE_DOOPEN (1<<4) /* Open file if a batched operation is available */ 424errno_t vn_create(vnode_t, vnode_t *, struct nameidata *, struct vnode_attr *, uint32_t, int, uint32_t*, vfs_context_t); 425int vn_mkdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx); 426int vn_rmdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx); 427 428int vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t); 429int vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t); 430int vn_removexattr(vnode_t, const char *, int, vfs_context_t); 431int vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t); 432 433#if NAMEDSTREAMS 434errno_t vnode_getnamedstream(vnode_t, vnode_t *, const char *, enum nsoperation, int, vfs_context_t); 435errno_t vnode_makenamedstream(vnode_t, vnode_t *, const char *, int, vfs_context_t); 436errno_t vnode_removenamedstream(vnode_t, vnode_t, const char *, int, vfs_context_t); 437errno_t vnode_flushnamedstream(vnode_t vp, vnode_t svp, vfs_context_t context); 438errno_t vnode_relenamedstream(vnode_t vp, vnode_t svp); 439errno_t vnode_verifynamedstream (vnode_t vp); 440#endif 441 442 443void nchinit(void); 444int resize_namecache(uint32_t newsize); 445void name_cache_lock_shared(void); 446void name_cache_lock(void); 447void name_cache_unlock(void); 448void cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, int gen); 449const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp); 450 451int vn_pathconf(vnode_t, int, int32_t *, vfs_context_t); 452extern int nc_disabled; 453 454#define vnode_lock_convert(v) lck_mtx_convert_spin(&(v)->v_lock) 455 456void vnode_lock_spin(vnode_t); 457 458 459void vnode_list_lock(void); 460void vnode_list_unlock(void); 461 462#define VNODE_REF_FORCE 0x1 463int vnode_ref_ext(vnode_t, int, int); 464 465void vnode_rele_ext(vnode_t, int, int); 466void vnode_rele_internal(vnode_t, int, int, int); 467#ifdef BSD_KERNEL_PRIVATE 468int vnode_getalways(vnode_t); 469int vget_internal(vnode_t, int, int); 470errno_t vnode_getiocount(vnode_t, unsigned int, int); 471#endif /* BSD_KERNEL_PRIVATE */ 472int vnode_get_locked(vnode_t); 473int vnode_put_locked(vnode_t); 474 475int vnode_issock(vnode_t); 476int vnode_isaliased(vnode_t); 477 478void unlock_fsnode(vnode_t, int *); 479int lock_fsnode(vnode_t, int *); 480 481errno_t vnode_resume(vnode_t); 482errno_t vnode_suspend(vnode_t); 483 484 485errno_t vnode_mtime(vnode_t, struct timespec *, vfs_context_t); 486 487errno_t vnode_size(vnode_t, off_t *, vfs_context_t); 488errno_t vnode_setsize(vnode_t, off_t, int ioflag, vfs_context_t); 489int vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx); 490int vnode_isspec(vnode_t vp); 491 492 493#ifdef BSD_KERNEL_PRIVATE 494 495typedef uint32_t compound_vnop_id_t; 496#define COMPOUND_VNOP_OPEN 0x01 497#define COMPOUND_VNOP_MKDIR 0x02 498#define COMPOUND_VNOP_RENAME 0x04 499#define COMPOUND_VNOP_REMOVE 0x08 500#define COMPOUND_VNOP_RMDIR 0x10 501 502int vnode_compound_rename_available(vnode_t vp); 503int vnode_compound_rmdir_available(vnode_t vp); 504int vnode_compound_mkdir_available(vnode_t vp); 505int vnode_compound_remove_available(vnode_t vp); 506int vnode_compound_open_available(vnode_t vp); 507int vnode_compound_op_available(vnode_t, compound_vnop_id_t); 508#endif /* BSD_KERNEL_PRIVATE */ 509 510void vn_setunionwait(vnode_t); 511void vn_checkunionwait(vnode_t); 512void vn_clearunionwait(vnode_t, int); 513 514void SPECHASH_LOCK(void); 515void SPECHASH_UNLOCK(void); 516 517void vnode_authorize_init(void); 518 519void vfsinit(void); 520void vnode_lock(vnode_t); 521void vnode_unlock(vnode_t); 522 523/* 524 * XXX exported symbols; should be static 525 */ 526void vfs_op_init(void); 527void vfs_opv_init(void); 528int vfs_sysctl(int *name, uint32_t namelen, user_addr_t oldp, size_t *oldlenp, 529 user_addr_t newp, size_t newlen, struct proc *p); 530int sysctl_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); 531 532#ifdef BSD_KERNEL_PRIVATE 533void vnode_setneedinactive(vnode_t); 534int vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */ 535 536void nspace_proc_exit(struct proc *p); 537 538#if CONFIG_TRIGGERS 539/* VFS Internal Vnode Trigger Interfaces (Private) */ 540int vnode_trigger_resolve(vnode_t, struct nameidata *, vfs_context_t); 541void vnode_trigger_rearm(vnode_t, vfs_context_t); 542void vfs_nested_trigger_unmounts(mount_t, int, vfs_context_t); 543#endif /* CONFIG_TRIGGERS */ 544 545#endif /* BSD_KERNEL_PRIVATE */ 546 547#endif /* !_SYS_VNODE_INTERNAL_H_ */ 548